diff --git a/apexkey/Android.bp b/apexkey/Android.bp
new file mode 100644
index 0000000..e74717a
--- /dev/null
+++ b/apexkey/Android.bp
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+apex_key {
+    name: "com.android.hardware.key",
+    public_key: "com.android.hardware.avbpubkey",
+    private_key: "com.android.hardware.pem",
+}
+
+android_app_certificate {
+    name: "com.android.hardware.certificate",
+    certificate: "com.android.hardware",
+}
diff --git a/apexkey/com.android.hardware.avbpubkey b/apexkey/com.android.hardware.avbpubkey
new file mode 100644
index 0000000..12f0370
--- /dev/null
+++ b/apexkey/com.android.hardware.avbpubkey
Binary files differ
diff --git a/apexkey/com.android.hardware.pem b/apexkey/com.android.hardware.pem
new file mode 100644
index 0000000..4d2882b
--- /dev/null
+++ b/apexkey/com.android.hardware.pem
@@ -0,0 +1,52 @@
+-----BEGIN PRIVATE KEY-----
+MIIJQwIBADANBgkqhkiG9w0BAQEFAASCCS0wggkpAgEAAoICAQCmirL5vFcGDqg9
+JqKZwRqzPr76t8aqJSu+UOdnlmqBLmUBaeun2KwRsZiLku933m5MNv+CPnVQW7ij
+z0lv0z/qB8SXN+KAgSqRdIjL1ySQgp8ygKHu+GcvbMFj9pVuqufwSrEOY9Un1RRY
+InDDj88c/aNbCw64d1QVedgUIs5KDDLjOzkcrrbH+Th26r2YjhlRKQXCZT5jW1fY
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+CfwMXX64WV5fWscmSLZin5xK+AN+/wIDAQABAoICABLDnda1ebic/ielqrxYHYIE
+l8/31NJmzb7rrqblM6rKZ2b5YCvRJdH4iI9xRrnivdqod7FdCCq9qtgKCuQmkRT1
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+mk1pUJbglkpP6aMDNXzA6Z50PuXfhF5+dXBrLftT1tcNo/8/ysd/iKsi1C6hWZ9L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+-----END PRIVATE KEY-----
diff --git a/apexkey/com.android.hardware.pk8 b/apexkey/com.android.hardware.pk8
new file mode 100644
index 0000000..97007d2
--- /dev/null
+++ b/apexkey/com.android.hardware.pk8
Binary files differ
diff --git a/apexkey/com.android.hardware.x509.pem b/apexkey/com.android.hardware.x509.pem
new file mode 100644
index 0000000..2728a23
--- /dev/null
+++ b/apexkey/com.android.hardware.x509.pem
@@ -0,0 +1,34 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/audio/aidl/default/Config.cpp b/audio/aidl/default/Config.cpp
index d1023da..308200a 100644
--- a/audio/aidl/default/Config.cpp
+++ b/audio/aidl/default/Config.cpp
@@ -27,12 +27,11 @@
 
 namespace aidl::android::hardware::audio::core {
 ndk::ScopedAStatus Config::getSurroundSoundConfig(SurroundSoundConfig* _aidl_return) {
+    static const auto& func = __func__;
     static const SurroundSoundConfig surroundSoundConfig = [this]() {
-        SurroundSoundConfig surroundCfg;
-        if (mAudioPolicyConverter.getStatus() == ::android::OK) {
-            surroundCfg = mAudioPolicyConverter.getSurroundSoundConfig();
-        } else {
-            LOG(WARNING) << __func__ << mAudioPolicyConverter.getError();
+        SurroundSoundConfig surroundCfg = mAudioPolicyConverter.getSurroundSoundConfig();
+        if (mAudioPolicyConverter.getStatus() != ::android::OK) {
+            LOG(WARNING) << func << ": " << mAudioPolicyConverter.getError();
         }
         return surroundCfg;
     }();
@@ -42,21 +41,22 @@
 }
 
 ndk::ScopedAStatus Config::getEngineConfig(AudioHalEngineConfig* _aidl_return) {
+    static const auto& func = __func__;
     static const AudioHalEngineConfig returnEngCfg = [this]() {
         AudioHalEngineConfig engConfig;
         if (mEngConfigConverter.getStatus() == ::android::OK) {
             engConfig = mEngConfigConverter.getAidlEngineConfig();
         } else {
-            LOG(INFO) << __func__ << mEngConfigConverter.getError();
+            LOG(INFO) << func << ": " << mEngConfigConverter.getError();
             if (mAudioPolicyConverter.getStatus() == ::android::OK) {
                 engConfig = mAudioPolicyConverter.getAidlEngineConfig();
             } else {
-                LOG(WARNING) << __func__ << mAudioPolicyConverter.getError();
+                LOG(WARNING) << func << ": " << mAudioPolicyConverter.getError();
             }
         }
         // Logging full contents of the config is an overkill, just provide statistics.
-        LOG(DEBUG) << "getEngineConfig: number of strategies parsed: "
-                   << engConfig.productStrategies.size()
+        LOG(DEBUG) << func
+                   << ": number of strategies parsed: " << engConfig.productStrategies.size()
                    << ", default strategy: " << engConfig.defaultProductStrategyId
                    << ", number of volume groups parsed: " << engConfig.volumeGroups.size();
         return engConfig;
diff --git a/audio/aidl/default/Configuration.cpp b/audio/aidl/default/Configuration.cpp
index 8e02e7d..9131935 100644
--- a/audio/aidl/default/Configuration.cpp
+++ b/audio/aidl/default/Configuration.cpp
@@ -230,14 +230,14 @@
 
         AudioPort primaryOutMix = createPort(c.nextPortId++, "primary output",
                                              makeBitPositionFlagMask(AudioOutputFlags::PRIMARY),
-                                             false, createPortMixExt(1, 1));
+                                             false, createPortMixExt(0, 0));
         primaryOutMix.profiles.insert(primaryOutMix.profiles.begin(),
                                       standardPcmAudioProfiles.begin(),
                                       standardPcmAudioProfiles.end());
         c.ports.push_back(primaryOutMix);
 
         AudioPort primaryInMix =
-                createPort(c.nextPortId++, "primary input", 0, true, createPortMixExt(1, 1));
+                createPort(c.nextPortId++, "primary input", 0, true, createPortMixExt(0, 0));
         primaryInMix.profiles.push_back(
                 createProfile(PcmType::INT_16_BIT,
                               {AudioChannelLayout::LAYOUT_MONO, AudioChannelLayout::LAYOUT_STEREO},
diff --git a/audio/aidl/default/EffectConfig.cpp b/audio/aidl/default/EffectConfig.cpp
index 730c0bf..4a12f8a 100644
--- a/audio/aidl/default/EffectConfig.cpp
+++ b/audio/aidl/default/EffectConfig.cpp
@@ -196,16 +196,16 @@
     // see list of audio sources in audio_source_t:
     // system/media/audio/include/system/audio_effects/audio_effects_conf.h
     static const std::map<const std::string, AudioSource> sAudioSourceTable = {
-            {MIC_SRC_TAG, AudioSource::VOICE_CALL},
-            {VOICE_UL_SRC_TAG, AudioSource::VOICE_CALL},
-            {VOICE_DL_SRC_TAG, AudioSource::VOICE_CALL},
+            {MIC_SRC_TAG, AudioSource::MIC},
+            {VOICE_UL_SRC_TAG, AudioSource::VOICE_UPLINK},
+            {VOICE_DL_SRC_TAG, AudioSource::VOICE_DOWNLINK},
             {VOICE_CALL_SRC_TAG, AudioSource::VOICE_CALL},
-            {CAMCORDER_SRC_TAG, AudioSource::VOICE_CALL},
-            {VOICE_REC_SRC_TAG, AudioSource::VOICE_CALL},
-            {VOICE_COMM_SRC_TAG, AudioSource::VOICE_CALL},
-            {REMOTE_SUBMIX_SRC_TAG, AudioSource::VOICE_CALL},
-            {UNPROCESSED_SRC_TAG, AudioSource::VOICE_CALL},
-            {VOICE_PERFORMANCE_SRC_TAG, AudioSource::VOICE_CALL}};
+            {CAMCORDER_SRC_TAG, AudioSource::CAMCORDER},
+            {VOICE_REC_SRC_TAG, AudioSource::VOICE_RECOGNITION},
+            {VOICE_COMM_SRC_TAG, AudioSource::VOICE_COMMUNICATION},
+            {REMOTE_SUBMIX_SRC_TAG, AudioSource::REMOTE_SUBMIX},
+            {UNPROCESSED_SRC_TAG, AudioSource::UNPROCESSED},
+            {VOICE_PERFORMANCE_SRC_TAG, AudioSource::VOICE_PERFORMANCE}};
 
     if (typeTag == Processing::Type::streamType) {
         auto typeIter = sAudioStreamTypeTable.find(type);
diff --git a/audio/aidl/default/include/core-impl/XmlConverter.h b/audio/aidl/default/include/core-impl/XmlConverter.h
index a68a6fd..383ea24 100644
--- a/audio/aidl/default/include/core-impl/XmlConverter.h
+++ b/audio/aidl/default/include/core-impl/XmlConverter.h
@@ -53,10 +53,16 @@
                                      const ::android::status_t& status) {
         std::string errorMessage;
         if (status != ::android::OK) {
-            if (!isReadableConfigFile) {
-                errorMessage = "Could not read requested config file:" + configFilePath;
+            if (configFilePath.empty()) {
+                errorMessage = "No audio configuration files found";
+            } else if (!isReadableConfigFile) {
+                errorMessage = std::string("Could not read requested XML config file: \"")
+                                       .append(configFilePath)
+                                       .append("\"");
             } else {
-                errorMessage = "Invalid config file: " + configFilePath;
+                errorMessage = std::string("Invalid XML config file: \"")
+                                       .append(configFilePath)
+                                       .append("\"");
             }
         }
         return errorMessage;
diff --git a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
index 11838f8..3134b86 100644
--- a/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
+++ b/audio/aidl/default/r_submix/StreamRemoteSubmix.cpp
@@ -348,9 +348,9 @@
     // recording (including this call): it's converted to usec and compared to how long we've been
     // recording for, which gives us how long we must wait to sync the projected recording time, and
     // the observed recording time.
-    const size_t projectedVsObservedOffsetUs = static_cast<size_t>(
+    const int projectedVsObservedOffsetUs =
             std::roundf((readCounterFrames * MICROS_PER_SECOND / mStreamConfig.sampleRate) -
-                        recordDurationUs.count()));
+                        recordDurationUs.count());
 
     LOG(VERBOSE) << __func__ << ": record duration " << recordDurationUs.count()
                  << " microseconds, will wait: " << projectedVsObservedOffsetUs << " microseconds";
diff --git a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
index 03ebd61..94b33d3 100644
--- a/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioCoreModuleTargetTest.cpp
@@ -1379,7 +1379,7 @@
                     << "At least two mix ports have PRIMARY flag set: " << primaryMixPort.value()
                     << " and " << port.id;
             primaryMixPort = port.id;
-            EXPECT_EQ(1, mixPort.maxOpenStreamCount)
+            EXPECT_GE(mixPort.maxOpenStreamCount, 0)
                     << "Primary mix port " << port.id << " can not have maxOpenStreamCount "
                     << mixPort.maxOpenStreamCount;
         }
diff --git a/audio/aidl/vts/VtsHalAudioEffectFactoryTargetTest.cpp b/audio/aidl/vts/VtsHalAudioEffectFactoryTargetTest.cpp
index 8084a59..225640e 100644
--- a/audio/aidl/vts/VtsHalAudioEffectFactoryTargetTest.cpp
+++ b/audio/aidl/vts/VtsHalAudioEffectFactoryTargetTest.cpp
@@ -134,17 +134,18 @@
 /**
  * @brief Check at least support list of effect must be supported by aosp:
  * https://developer.android.com/reference/android/media/audiofx/AudioEffect
+ *
+ * For Android 13, they are: Equalizer, LoudnessEnhancer, Visualizer, and DynamicsProcessing.
+ * https://source.android.com/docs/compatibility/13/android-13-cdd#552_audio_effects
  */
-TEST_P(EffectFactoryTest, ExpectAllAospEffectTypes) {
+TEST_P(EffectFactoryTest, SupportMandatoryEffectTypes) {
     std::vector<Descriptor> descs;
-    std::set<AudioUuid> typeUuidSet(
-            {aidl::android::hardware::audio::effect::getEffectTypeUuidBassBoost(),
-             aidl::android::hardware::audio::effect::getEffectTypeUuidEqualizer(),
-             aidl::android::hardware::audio::effect::getEffectTypeUuidEnvReverb(),
-             aidl::android::hardware::audio::effect::getEffectTypeUuidPresetReverb(),
-             aidl::android::hardware::audio::effect::getEffectTypeUuidDynamicsProcessing(),
-             aidl::android::hardware::audio::effect::getEffectTypeUuidHapticGenerator(),
-             aidl::android::hardware::audio::effect::getEffectTypeUuidVirtualizer()});
+    std::set<AudioUuid> typeUuidSet({
+            aidl::android::hardware::audio::effect::getEffectTypeUuidEqualizer(),
+            aidl::android::hardware::audio::effect::getEffectTypeUuidDynamicsProcessing(),
+            aidl::android::hardware::audio::effect::getEffectTypeUuidLoudnessEnhancer(),
+            aidl::android::hardware::audio::effect::getEffectTypeUuidVisualizer(),
+    });
 
     EXPECT_IS_OK(mEffectFactory->queryEffects(std::nullopt, std::nullopt, std::nullopt, &descs));
     EXPECT_TRUE(descs.size() >= typeUuidSet.size());
@@ -305,4 +306,4 @@
     ABinderProcess_setThreadPoolMaxThreadCount(1);
     ABinderProcess_startThreadPool();
     return RUN_ALL_TESTS();
-}
\ No newline at end of file
+}
diff --git a/audio/core/all-versions/default/ParametersUtil.cpp b/audio/core/all-versions/default/ParametersUtil.cpp
index c0e2903..4d8a208 100644
--- a/audio/core/all-versions/default/ParametersUtil.cpp
+++ b/audio/core/all-versions/default/ParametersUtil.cpp
@@ -97,17 +97,17 @@
             retval = getHalStatusToResult(status);
             break;
         }
-        result[i].key = halKey.string();
-        result[i].value = halValue.string();
+        result[i].key = halKey.c_str();
+        result[i].value = halValue.c_str();
     }
     cb(retval, result);
 }
 
 std::unique_ptr<AudioParameter> ParametersUtil::getParams(const AudioParameter& keys) {
     String8 paramsAndValues;
-    char* halValues = halGetParameters(keys.keysToString().string());
+    char* halValues = halGetParameters(keys.keysToString().c_str());
     if (halValues != NULL) {
-        paramsAndValues.setTo(halValues);
+        paramsAndValues = halValues;
         free(halValues);
     } else {
         paramsAndValues.clear();
@@ -163,7 +163,7 @@
 }
 
 Result ParametersUtil::setParams(const AudioParameter& param) {
-    int halStatus = halSetParameters(param.toString().string());
+    int halStatus = halSetParameters(param.toString().c_str());
     return util::analyzeStatus(halStatus);
 }
 
diff --git a/audio/core/all-versions/default/Stream.cpp b/audio/core/all-versions/default/Stream.cpp
index 8e85a8b..c11b675 100644
--- a/audio/core/all-versions/default/Stream.cpp
+++ b/audio/core/all-versions/default/Stream.cpp
@@ -114,7 +114,7 @@
     SampleRateSet halSampleRates;
     if (result == Result::OK) {
         halSampleRates =
-            samplingRatesFromString(halListValue.string(), AudioParameter::valueListSeparator);
+                samplingRatesFromString(halListValue.c_str(), AudioParameter::valueListSeparator);
         sampleRates = hidl_vec<uint32_t>(halSampleRates.begin(), halSampleRates.end());
         // Legacy get_parameter does not return a status_t, thus can not advertise of failure.
         // Note that this method must succeed (non empty list) if the format is supported.
@@ -140,7 +140,7 @@
     ChannelMaskSet halChannelMasks;
     if (result == Result::OK) {
         halChannelMasks =
-            channelMasksFromString(halListValue.string(), AudioParameter::valueListSeparator);
+                channelMasksFromString(halListValue.c_str(), AudioParameter::valueListSeparator);
         channelMasks.resize(halChannelMasks.size());
         size_t i = 0;
         for (auto channelMask : halChannelMasks) {
@@ -182,7 +182,7 @@
     hidl_vec<AudioFormat> formats;
     FormatVector halFormats;
     if (result == Result::OK) {
-        halFormats = formatsFromString(halListValue.string(), AudioParameter::valueListSeparator);
+        halFormats = formatsFromString(halListValue.c_str(), AudioParameter::valueListSeparator);
         formats.resize(halFormats.size());
         for (size_t i = 0; i < halFormats.size(); ++i) {
             formats[i] = AudioFormat(halFormats[i]);
@@ -226,7 +226,7 @@
     // Ensure that the separator is one character, despite that it's defined as a C string.
     static_assert(sizeof(AUDIO_PARAMETER_VALUE_LIST_SEPARATOR) == 2);
     std::vector<std::string> halFormats =
-            splitString(halListValue.string(), AUDIO_PARAMETER_VALUE_LIST_SEPARATOR[0]);
+            splitString(halListValue.c_str(), AUDIO_PARAMETER_VALUE_LIST_SEPARATOR[0]);
     hidl_vec<AudioFormat> formats;
     (void)HidlUtils::audioFormatsFromHal(halFormats, &formats);
     std::vector<AudioProfile> tempProfiles;
@@ -241,7 +241,7 @@
         result = getParam(AudioParameter::keyStreamSupportedSamplingRates, &halListValue, context);
         if (result != Result::OK) break;
         std::vector<std::string> halSampleRates =
-                splitString(halListValue.string(), AUDIO_PARAMETER_VALUE_LIST_SEPARATOR[0]);
+                splitString(halListValue.c_str(), AUDIO_PARAMETER_VALUE_LIST_SEPARATOR[0]);
         hidl_vec<uint32_t> sampleRates;
         sampleRates.resize(halSampleRates.size());
         for (size_t i = 0; i < sampleRates.size(); ++i) {
@@ -251,7 +251,7 @@
         result = getParam(AudioParameter::keyStreamSupportedChannels, &halListValue, context);
         if (result != Result::OK) break;
         std::vector<std::string> halChannelMasks =
-                splitString(halListValue.string(), AUDIO_PARAMETER_VALUE_LIST_SEPARATOR[0]);
+                splitString(halListValue.c_str(), AUDIO_PARAMETER_VALUE_LIST_SEPARATOR[0]);
         hidl_vec<AudioChannelMask> channelMasks;
         (void)HidlUtils::audioChannelMasksFromHal(halChannelMasks, &channelMasks);
         // Create a profile.
diff --git a/authsecret/aidl/default/Android.bp b/authsecret/aidl/default/Android.bp
index 7ce83fd..7e6e48b 100644
--- a/authsecret/aidl/default/Android.bp
+++ b/authsecret/aidl/default/Android.bp
@@ -26,16 +26,60 @@
 cc_binary {
     name: "android.hardware.authsecret-service.example",
     relative_install_path: "hw",
-    init_rc: ["android.hardware.authsecret-service.example.rc"],
-    vintf_fragments: ["android.hardware.authsecret-service.example.xml"],
     vendor: true,
     srcs: [
         "service.cpp",
         "AuthSecret.cpp",
     ],
     shared_libs: [
+        "libbinder_ndk",
+        "liblog",
+    ],
+    static_libs: [
         "android.hardware.authsecret-V1-ndk",
         "libbase",
-        "libbinder_ndk",
+    ],
+    stl: "c++_static",
+}
+
+prebuilt_etc {
+    name: "android.hardware.authsecret-service.example.rc",
+    src: "android.hardware.authsecret-service.example.rc",
+    installable: false,
+}
+
+prebuilt_etc {
+    name: "android.hardware.authsecret-service.example.xml",
+    src: "android.hardware.authsecret-service.example.xml",
+    sub_dir: "vintf",
+    installable: false,
+}
+
+apex_key {
+    name: "com.android.hardware.authsecret.key",
+    public_key: "com.android.hardware.authsecret.avbpubkey",
+    private_key: "com.android.hardware.authsecret.pem",
+}
+
+android_app_certificate {
+    name: "com.android.hardware.authsecret.certificate",
+    certificate: "com.android.hardware.authsecret",
+}
+
+apex {
+    name: "com.android.hardware.authsecret",
+    manifest: "manifest.json",
+    file_contexts: "file_contexts",
+    key: "com.android.hardware.authsecret.key",
+    certificate: ":com.android.hardware.authsecret.certificate",
+    updatable: false,
+    vendor: true,
+
+    binaries: [
+        "android.hardware.authsecret-service.example",
+    ],
+    prebuilts: [
+        "android.hardware.authsecret-service.example.rc", // init_rc
+        "android.hardware.authsecret-service.example.xml", // vintf_fragments
     ],
 }
diff --git a/authsecret/aidl/default/android.hardware.authsecret-service.example.rc b/authsecret/aidl/default/android.hardware.authsecret-service.example.rc
index fef6e24..9f51837 100644
--- a/authsecret/aidl/default/android.hardware.authsecret-service.example.rc
+++ b/authsecret/aidl/default/android.hardware.authsecret-service.example.rc
@@ -1,4 +1,4 @@
-service vendor.authsecret_default /vendor/bin/hw/android.hardware.authsecret-service.example
+service vendor.authsecret_default /apex/com.android.hardware.authsecret/bin/hw/android.hardware.authsecret-service.example
     class hal
     user hsm
     group hsm
diff --git a/authsecret/aidl/default/com.android.hardware.authsecret.avbpubkey b/authsecret/aidl/default/com.android.hardware.authsecret.avbpubkey
new file mode 100644
index 0000000..2fb5f0b
--- /dev/null
+++ b/authsecret/aidl/default/com.android.hardware.authsecret.avbpubkey
Binary files differ
diff --git a/authsecret/aidl/default/com.android.hardware.authsecret.pem b/authsecret/aidl/default/com.android.hardware.authsecret.pem
new file mode 100644
index 0000000..644868c
--- /dev/null
+++ b/authsecret/aidl/default/com.android.hardware.authsecret.pem
@@ -0,0 +1,52 @@
+-----BEGIN PRIVATE KEY-----
+MIIJQQIBADANBgkqhkiG9w0BAQEFAASCCSswggknAgEAAoICAQCkkrpV5StewKq6
+HOog0IkbBRAtuChTsQjE1yQY6VXF/f/QWc2L0++pe0PTNzuKJZuqD05tgLYBxsFl
+QSLMKoUnGkQshVHxFLCls0CQo/umgygydxyVNW5cTdDDbl0VHrYcJJSWBobfy/hh
+dizJVET6HMQLY0shKM9CcdFDRqvM+WB6ceBxcFsxwm8r5qcB6CCeIDsPuBBo5Mpa
+NlVbaMBc/qrSRFLqLiVph6Goycg0Zk5+i1A4VBTJoHlOQwgX4uMdlNoAnaf1rLIm
+Qn2zNfcfeZ3BoiwKv8qMsvLNotaN+oIYLi4t21JcPsroByI+Ps5Gia17BhQvbbXx
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+BFiMVB0RjTzfo8ngwgPLIm/aXU2O8IG8sILO1s1iOaQb23E2PveF1B7EOmFzW8x3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+-----END PRIVATE KEY-----
diff --git a/authsecret/aidl/default/com.android.hardware.authsecret.pk8 b/authsecret/aidl/default/com.android.hardware.authsecret.pk8
new file mode 100644
index 0000000..1453366
--- /dev/null
+++ b/authsecret/aidl/default/com.android.hardware.authsecret.pk8
Binary files differ
diff --git a/authsecret/aidl/default/com.android.hardware.authsecret.x509.pem b/authsecret/aidl/default/com.android.hardware.authsecret.x509.pem
new file mode 100644
index 0000000..71fe854
--- /dev/null
+++ b/authsecret/aidl/default/com.android.hardware.authsecret.x509.pem
@@ -0,0 +1,34 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/authsecret/aidl/default/file_contexts b/authsecret/aidl/default/file_contexts
new file mode 100644
index 0000000..8e79f26
--- /dev/null
+++ b/authsecret/aidl/default/file_contexts
@@ -0,0 +1,3 @@
+(/.*)?                                                      u:object_r:vendor_file:s0
+/etc(/.*)?                                                  u:object_r:vendor_configs_file:s0
+/bin/hw/android\.hardware\.authsecret-service\.example      u:object_r:hal_authsecret_default_exec:s0
\ No newline at end of file
diff --git a/authsecret/aidl/default/manifest.json b/authsecret/aidl/default/manifest.json
new file mode 100644
index 0000000..ad5a45b
--- /dev/null
+++ b/authsecret/aidl/default/manifest.json
@@ -0,0 +1,4 @@
+{
+    "name": "com.android.hardware.authsecret",
+    "version": 1
+}
diff --git a/camera/common/1.0/default/CameraMetadata.cpp b/camera/common/1.0/default/CameraMetadata.cpp
index eb1bd1c..1da88ec 100644
--- a/camera/common/1.0/default/CameraMetadata.cpp
+++ b/camera/common/1.0/default/CameraMetadata.cpp
@@ -275,7 +275,7 @@
         return res;
     }
     // string.size() doesn't count the null termination character.
-    return updateImpl(tag, (const void*)string.string(), string.size() + 1);
+    return updateImpl(tag, (const void*)string.c_str(), string.size() + 1);
 }
 
 status_t CameraMetadata::update(const camera_metadata_ro_entry &entry) {
@@ -483,9 +483,9 @@
     size_t sectionLength = 0;
     size_t totalSectionCount = ANDROID_SECTION_COUNT + vendorSectionCount;
     for (size_t i = 0; i < totalSectionCount; ++i) {
-
-        const char *str = (i < ANDROID_SECTION_COUNT) ? camera_metadata_section_names[i] :
-                (*vendorSections)[i - ANDROID_SECTION_COUNT].string();
+        const char* str = (i < ANDROID_SECTION_COUNT)
+                                  ? camera_metadata_section_names[i]
+                                  : (*vendorSections)[i - ANDROID_SECTION_COUNT].c_str();
 
         ALOGV("%s: Trying to match against section '%s'", __FUNCTION__, str);
 
diff --git a/camera/common/1.0/default/CameraParameters.cpp b/camera/common/1.0/default/CameraParameters.cpp
index e707b08..a31b807 100644
--- a/camera/common/1.0/default/CameraParameters.cpp
+++ b/camera/common/1.0/default/CameraParameters.cpp
@@ -211,7 +211,7 @@
 
 void CameraParameters::unflatten(const String8 &params)
 {
-    const char *a = params.string();
+    const char* a = params.c_str();
     const char *b;
 
     mMap.clear();
@@ -277,7 +277,7 @@
     String8 v = mMap.valueFor(String8(key));
     if (v.length() == 0)
         return 0;
-    return v.string();
+    return v.c_str();
 }
 
 int CameraParameters::getInt(const char *key) const
@@ -469,7 +469,7 @@
         String8 k, v;
         k = mMap.keyAt(i);
         v = mMap.valueAt(i);
-        ALOGD("%s: %s\n", k.string(), v.string());
+        ALOGD("%s: %s\n", k.c_str(), v.c_str());
     }
 }
 
@@ -484,10 +484,10 @@
         String8 k, v;
         k = mMap.keyAt(i);
         v = mMap.valueAt(i);
-        snprintf(buffer, 255, "\t%s: %s\n", k.string(), v.string());
+        snprintf(buffer, 255, "\t%s: %s\n", k.c_str(), v.c_str());
         result.append(buffer);
     }
-    write(fd, result.string(), result.size());
+    write(fd, result.c_str(), result.size());
     return NO_ERROR;
 }
 
diff --git a/camera/common/1.0/default/VendorTagDescriptor.cpp b/camera/common/1.0/default/VendorTagDescriptor.cpp
index d2bee85..ba3fe39 100644
--- a/camera/common/1.0/default/VendorTagDescriptor.cpp
+++ b/camera/common/1.0/default/VendorTagDescriptor.cpp
@@ -100,7 +100,7 @@
     if (index < 0) {
         return VENDOR_SECTION_NAME_ERR;
     }
-    return mSections[mTagToSectionMap.valueAt(index)].string();
+    return mSections[mTagToSectionMap.valueAt(index)].c_str();
 }
 
 ssize_t VendorTagDescriptor::getSectionIndex(uint32_t tag) const {
@@ -112,7 +112,7 @@
     if (index < 0) {
         return VENDOR_TAG_NAME_ERR;
     }
-    return mTagToNameMap.valueAt(index).string();
+    return mTagToNameMap.valueAt(index).c_str();
 }
 
 int VendorTagDescriptor::getTagType(uint32_t tag) const {
@@ -130,13 +130,13 @@
 status_t VendorTagDescriptor::lookupTag(const String8& name, const String8& section, /*out*/uint32_t* tag) const {
     ssize_t index = mReverseMapping.indexOfKey(section);
     if (index < 0) {
-        ALOGE("%s: Section '%s' does not exist.", __FUNCTION__, section.string());
+        ALOGE("%s: Section '%s' does not exist.", __FUNCTION__, section.c_str());
         return BAD_VALUE;
     }
 
     ssize_t nameIndex = mReverseMapping[index]->indexOfKey(name);
     if (nameIndex < 0) {
-        ALOGE("%s: Tag name '%s' does not exist.", __FUNCTION__, name.string());
+        ALOGE("%s: Tag name '%s' does not exist.", __FUNCTION__, name.c_str());
         return BAD_VALUE;
     }
 
@@ -170,8 +170,8 @@
         int type = mTagToTypeMap.at(tag);
         const char* typeName = (type >= 0 && type < NUM_TYPES) ?
                 camera_metadata_type_names[type] : "UNKNOWN";
-        dprintf(fd, "%*s0x%x (%s) with type %d (%s) defined in section %s\n", indentation + 2,
-            "", tag, name.string(), type, typeName, sectionName.string());
+        dprintf(fd, "%*s0x%x (%s) with type %d (%s) defined in section %s\n", indentation + 2, "",
+                tag, name.c_str(), type, typeName, sectionName.c_str());
     }
 
 }
diff --git a/camera/provider/2.4/default/LegacyCameraProviderImpl_2_4.cpp b/camera/provider/2.4/default/LegacyCameraProviderImpl_2_4.cpp
index 7c3b982..69318c7 100644
--- a/camera/provider/2.4/default/LegacyCameraProviderImpl_2_4.cpp
+++ b/camera/provider/2.4/default/LegacyCameraProviderImpl_2_4.cpp
@@ -439,7 +439,7 @@
     }
     mVendorTagSections.resize(numSections);
     for (size_t s = 0; s < numSections; s++) {
-        mVendorTagSections[s].sectionName = (*sectionNames)[s].string();
+        mVendorTagSections[s].sectionName = (*sectionNames)[s].c_str();
         mVendorTagSections[s].tags = tagsBySection[s];
     }
     return true;
diff --git a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
index 339a142..c8e683c 100644
--- a/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
+++ b/camera/provider/2.4/vts/functional/VtsHalCameraProviderV2_4TargetTest.cpp
@@ -244,7 +244,7 @@
                          std::string* deviceVersion, std::string* cameraId) {
         ::android::String8 pattern;
         pattern.appendFormat(kDeviceNameRE, providerType.c_str());
-        std::regex e(pattern.string());
+        std::regex e(pattern.c_str());
         std::string deviceNameStd(deviceName.c_str());
         std::smatch sm;
         if (std::regex_match(deviceNameStd, sm, e)) {
@@ -8801,8 +8801,7 @@
 void CameraHidlTest::setParameters(
         const sp<::android::hardware::camera::device::V1_0::ICameraDevice> &device,
         const CameraParameters &cameraParams) {
-    Return<Status> returnStatus = device->setParameters(
-            cameraParams.flatten().string());
+    Return<Status> returnStatus = device->setParameters(cameraParams.flatten().c_str());
     ASSERT_TRUE(returnStatus.isOk());
     ASSERT_EQ(Status::OK, returnStatus);
 }
diff --git a/cas/aidl/default/TypeConvert.cpp b/cas/aidl/default/TypeConvert.cpp
index 4f7005f..1f0a46d 100644
--- a/cas/aidl/default/TypeConvert.cpp
+++ b/cas/aidl/default/TypeConvert.cpp
@@ -98,7 +98,7 @@
     for (auto it = sessionId.begin(); it != sessionId.end(); it++) {
         result.appendFormat("%02x ", *it);
     }
-    if (result.isEmpty()) {
+    if (result.empty()) {
         result.append("(null)");
     }
     return result;
diff --git a/compatibility_matrices/compatibility_matrix.7.xml b/compatibility_matrices/compatibility_matrix.7.xml
index e20fcec..14c330e 100644
--- a/compatibility_matrices/compatibility_matrix.7.xml
+++ b/compatibility_matrices/compatibility_matrix.7.xml
@@ -263,22 +263,6 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="aidl" optional="true">
-        <name>android.hardware.gnss.visibility_control</name>
-        <version>1</version>
-        <interface>
-            <name>IGnssVisibilityControl</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
-    <hal format="aidl" optional="true">
-        <name>android.hardware.gnss.measurement_corrections</name>
-        <version>1</version>
-        <interface>
-            <name>IMeasurementCorrectionsInterface</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <hal format="hidl" optional="true">
         <name>android.hardware.graphics.allocator</name>
         <!-- New, non-Go devices should use 4.0 or the AIDL hal. -->
diff --git a/compatibility_matrices/compatibility_matrix.8.xml b/compatibility_matrices/compatibility_matrix.8.xml
index 09d3fda..b7ed648 100644
--- a/compatibility_matrices/compatibility_matrix.8.xml
+++ b/compatibility_matrices/compatibility_matrix.8.xml
@@ -270,22 +270,6 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="aidl" optional="true">
-        <name>android.hardware.gnss.visibility_control</name>
-        <version>1</version>
-        <interface>
-            <name>IGnssVisibilityControl</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
-    <hal format="aidl" optional="true">
-        <name>android.hardware.gnss.measurement_corrections</name>
-        <version>1</version>
-        <interface>
-            <name>IMeasurementCorrectionsInterface</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <!-- Either the AIDL or the HIDL allocator HAL must exist on the device.
          If the HIDL composer HAL exists, it must be at least version 2.0.
          See DeviceManifestTest.GrallocHal -->
@@ -473,7 +457,7 @@
             <regex-instance>.*</regex-instance>
         </interface>
     </hal>
-    <hal format="aidl" optional="true">
+    <hal format="aidl" optional="true" updatable-via-apex="true">
         <name>android.hardware.nfc</name>
         <interface>
             <name>INfc</name>
diff --git a/compatibility_matrices/compatibility_matrix.9.xml b/compatibility_matrices/compatibility_matrix.9.xml
index b13b4a9..6e2178a 100644
--- a/compatibility_matrices/compatibility_matrix.9.xml
+++ b/compatibility_matrices/compatibility_matrix.9.xml
@@ -52,7 +52,7 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="aidl" optional="true">
+    <hal format="aidl" optional="true" updatable-via-apex="true">
          <name>android.hardware.authsecret</name>
          <version>1</version>
          <interface>
@@ -270,22 +270,6 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="aidl" optional="true">
-        <name>android.hardware.gnss.visibility_control</name>
-        <version>1</version>
-        <interface>
-            <name>IGnssVisibilityControl</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
-    <hal format="aidl" optional="true">
-        <name>android.hardware.gnss.measurement_corrections</name>
-        <version>1</version>
-        <interface>
-            <name>IMeasurementCorrectionsInterface</name>
-            <instance>default</instance>
-        </interface>
-    </hal>
     <!-- Either the AIDL or the HIDL allocator HAL must exist on the device.
          If the HIDL composer HAL exists, it must be at least version 2.0.
          See DeviceManifestTest.GrallocHal -->
@@ -470,7 +454,7 @@
             <regex-instance>.*</regex-instance>
         </interface>
     </hal>
-    <hal format="aidl" optional="true">
+    <hal format="aidl" optional="true" updatable-via-apex="true">
         <name>android.hardware.nfc</name>
         <interface>
             <name>INfc</name>
@@ -803,7 +787,7 @@
             <regex-instance>.*</regex-instance>
         </interface>
     </hal>
-    <hal format="aidl" optional="true">
+    <hal format="aidl" optional="true" updatable-via-apex="true">
         <name>android.hardware.threadnetwork</name>
         <version>1</version>
         <interface>
diff --git a/drm/1.0/default/DrmPlugin.cpp b/drm/1.0/default/DrmPlugin.cpp
index 809f694..dfa5d22 100644
--- a/drm/1.0/default/DrmPlugin.cpp
+++ b/drm/1.0/default/DrmPlugin.cpp
@@ -98,8 +98,7 @@
                 break;
             }
         }
-        _hidl_cb(toStatus(status), toHidlVec(legacyRequest), requestType,
-                 defaultUrl.string());
+        _hidl_cb(toStatus(status), toHidlVec(legacyRequest), requestType, defaultUrl.c_str());
         return Void();
     }
 
@@ -219,7 +218,7 @@
         String8 legacyValue;
         status_t status = mLegacyPlugin->getPropertyString(
                 String8(propertyName.c_str()), legacyValue);
-        _hidl_cb(toStatus(status), legacyValue.string());
+        _hidl_cb(toStatus(status), legacyValue.c_str());
         return Void();
     }
 
diff --git a/drm/1.0/default/SharedLibrary.cpp b/drm/1.0/default/SharedLibrary.cpp
index 0a942cd..c9b5389 100644
--- a/drm/1.0/default/SharedLibrary.cpp
+++ b/drm/1.0/default/SharedLibrary.cpp
@@ -26,7 +26,7 @@
 namespace helper {
 
 SharedLibrary::SharedLibrary(const String8& path) {
-    mLibHandle = dlopen(path.string(), RTLD_NOW);
+    mLibHandle = dlopen(path.c_str(), RTLD_NOW);
 }
 
 SharedLibrary::~SharedLibrary() {
diff --git a/drm/1.0/default/include/PluginLoader.h b/drm/1.0/default/include/PluginLoader.h
index 0c45fb3..e243f42 100644
--- a/drm/1.0/default/include/PluginLoader.h
+++ b/drm/1.0/default/include/PluginLoader.h
@@ -39,9 +39,9 @@
          */
         String8 pluginDir(dir);
 
-        DIR* pDir = opendir(pluginDir.string());
+        DIR* pDir = opendir(pluginDir.c_str());
         if (pDir == NULL) {
-            ALOGE("Failed to find plugin directory %s", pluginDir.string());
+            ALOGE("Failed to find plugin directory %s", pluginDir.c_str());
         } else {
             struct dirent* pEntry;
             while ((pEntry = readdir(pDir))) {
diff --git a/nfc/aidl/Android.bp b/nfc/aidl/Android.bp
index 09a45d1..08ec5fe 100644
--- a/nfc/aidl/Android.bp
+++ b/nfc/aidl/Android.bp
@@ -34,6 +34,9 @@
             sdk_version: "module_current",
             enabled: false,
         },
+        rust: {
+            enabled: true,
+        },
     },
     versions_with_info: [
         {
diff --git a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
index a2edd62..4c46719 100644
--- a/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
+++ b/security/keymint/aidl/vts/functional/AttestKeyTest.cpp
@@ -98,17 +98,17 @@
                         TypedTag<TagType::BYTES, tag> tag_type, const char* prop) {
     ::android::String8 prop_name =
             ::android::String8::format("ro.product.%s_for_attestation", prop);
-    std::string prop_value = ::android::base::GetProperty(prop_name.string(), /* default= */ "");
+    std::string prop_value = ::android::base::GetProperty(prop_name.c_str(), /* default= */ "");
     if (!prop_value.empty()) {
-        add_tag_from_prop(attestation_id_tags, tag_type, prop_name.string());
+        add_tag_from_prop(attestation_id_tags, tag_type, prop_name.c_str());
     } else {
         prop_name = ::android::String8::format("ro.product.vendor.%s", prop);
-        prop_value = ::android::base::GetProperty(prop_name.string(), /* default= */ "");
+        prop_value = ::android::base::GetProperty(prop_name.c_str(), /* default= */ "");
         if (!prop_value.empty()) {
-            add_tag_from_prop(attestation_id_tags, tag_type, prop_name.string());
+            add_tag_from_prop(attestation_id_tags, tag_type, prop_name.c_str());
         } else {
             prop_name = ::android::String8::format("ro.product.%s", prop);
-            add_tag_from_prop(attestation_id_tags, tag_type, prop_name.string());
+            add_tag_from_prop(attestation_id_tags, tag_type, prop_name.c_str());
         }
     }
 }
diff --git a/security/keymint/aidl/vts/functional/AuthTest.cpp b/security/keymint/aidl/vts/functional/AuthTest.cpp
index ecaee11..d5c6d2a 100644
--- a/security/keymint/aidl/vts/functional/AuthTest.cpp
+++ b/security/keymint/aidl/vts/functional/AuthTest.cpp
@@ -545,7 +545,7 @@
     ASSERT_GT(dodgy_hat->mac.size(), 0);
     dodgy_hat->mac[0] ^= 0x01;
     EXPECT_EQ(ErrorCode::KEY_USER_NOT_AUTHENTICATED,
-              Finish(message, {} /* signature */, &ciphertext, hat.value()));
+              Finish(message, {} /* signature */, &ciphertext, dodgy_hat.value()));
 }
 
 // Test use of a key that requires an auth token for each action on the operation, with
diff --git a/security/rkp/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl b/security/rkp/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl
index b231dae..f8a5540 100644
--- a/security/rkp/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl
+++ b/security/rkp/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl
@@ -414,7 +414,7 @@
      *     1 : tstr,                                ; Issuer
      *     2 : tstr,                                ; Subject
      *     -4670552 : bstr .cbor PubKeyEd25519 /
-     *                bstr .cbor PubKeyECDSA256,
+     *                bstr .cbor PubKeyECDSA256 /
      *                bstr .cbor PubKeyECDSA384,    ; Subject Public Key
      *     -4670553 : bstr                          ; Key Usage
      *
diff --git a/sensors/common/default/2.X/Sensor.cpp b/sensors/common/default/2.X/Sensor.cpp
index 2c1cdfb..f8c857b 100644
--- a/sensors/common/default/2.X/Sensor.cpp
+++ b/sensors/common/default/2.X/Sensor.cpp
@@ -40,6 +40,7 @@
     : mIsEnabled(false),
       mSamplingPeriodNs(0),
       mLastSampleTimeNs(0),
+      mStopThread(false),
       mCallback(callback),
       mMode(OperationMode::NORMAL) {
     mRunThread = std::thread(startThread, this);
diff --git a/threadnetwork/aidl/default/Android.bp b/threadnetwork/aidl/default/Android.bp
index bcd5704..62c8c9e 100644
--- a/threadnetwork/aidl/default/Android.bp
+++ b/threadnetwork/aidl/default/Android.bp
@@ -9,22 +9,21 @@
 //  in whole or in part, without the express written permission of
 //  Google LLC.
 
-cc_defaults {
-    name: "threadnetwork_service_default",
-    vintf_fragments: ["threadnetwork-default.xml"],
+cc_binary {
+    name: "android.hardware.threadnetwork-service",
     vendor: true,
     relative_install_path: "hw",
 
     shared_libs: [
-        "android.hardware.threadnetwork-V1-ndk",
-        "libbase",
         "libbinder_ndk",
-        "libcutils",
         "liblog",
-        "libutils",
     ],
 
     static_libs: [
+        "android.hardware.threadnetwork-V1-ndk",
+        "libbase",
+        "libcutils",
+        "libutils",
         "openthread-common",
         "openthread-hdlc",
         "openthread-platform",
@@ -33,6 +32,8 @@
         "openthread-url",
     ],
 
+    stl: "c++_static",
+
     srcs: [
         "main.cpp",
         "service.cpp",
@@ -41,22 +42,10 @@
     ],
 }
 
-cc_binary {
-    name: "android.hardware.threadnetwork-service.sim",
-    defaults: ["threadnetwork_service_default"],
-    init_rc: ["android.hardware.threadnetwork-service.sim.rc"],
-    required: ["ot-rcp"],
-}
-
-cc_binary {
-    name: "android.hardware.threadnetwork-service",
-    defaults: ["threadnetwork_service_default"],
-}
-
 cc_fuzz {
     name: "android.hardware.threadnetwork-service.fuzzer",
 
-    defaults:["service_fuzzer_defaults"],
+    defaults: ["service_fuzzer_defaults"],
     shared_libs: [
         "libbinder_ndk",
     ],
@@ -85,3 +74,36 @@
         ],
     },
 }
+
+prebuilt_etc {
+    name: "threadnetwork-default.xml",
+    src: "threadnetwork-default.xml",
+    sub_dir: "vintf",
+    installable: false,
+}
+
+prebuilt_etc {
+    name: "threadnetwork-service-sim.rc",
+    src: "threadnetwork-service-sim.rc",
+    installable: false,
+}
+
+apex {
+    name: "com.android.hardware.threadnetwork",
+    manifest: "manifest.json",
+    file_contexts: "file_contexts",
+    key: "com.android.hardware.key",
+    certificate: ":com.android.hardware.certificate",
+    updatable: false,
+    vendor: true,
+
+    binaries: [
+        "android.hardware.threadnetwork-service",
+        "ot-rcp",
+    ],
+    prebuilts: [
+        "threadnetwork-default.xml", // vintf_fragment
+        "threadnetwork-service-sim.rc", // init_rc
+        "android.hardware.thread_network.prebuilt.xml", // permission
+    ],
+}
diff --git a/threadnetwork/aidl/default/android.hardware.threadnetwork-service.sim.rc b/threadnetwork/aidl/default/android.hardware.threadnetwork-service.sim.rc
deleted file mode 100644
index 2fb409c..0000000
--- a/threadnetwork/aidl/default/android.hardware.threadnetwork-service.sim.rc
+++ /dev/null
@@ -1,3 +0,0 @@
-service vendor.threadnetwork_hal /vendor/bin/hw/android.hardware.threadnetwork-service.sim spinel+hdlc+forkpty:///vendor/bin/ot-rcp?forkpty-arg=1
-    class hal
-    user thread_network
diff --git a/threadnetwork/aidl/default/file_contexts b/threadnetwork/aidl/default/file_contexts
new file mode 100644
index 0000000..39ba3b5
--- /dev/null
+++ b/threadnetwork/aidl/default/file_contexts
@@ -0,0 +1,4 @@
+(/.*)?                                                      u:object_r:vendor_file:s0
+/etc(/.*)?                                                  u:object_r:vendor_configs_file:s0
+/bin/hw/android\.hardware\.threadnetwork-service            u:object_r:hal_threadnetwork_default_exec:s0
+/bin/ot-rcp                                                 u:object_r:ot_rcp_exec:s0
diff --git a/threadnetwork/aidl/default/manifest.json b/threadnetwork/aidl/default/manifest.json
new file mode 100644
index 0000000..61e6dc1
--- /dev/null
+++ b/threadnetwork/aidl/default/manifest.json
@@ -0,0 +1,4 @@
+{
+    "name": "com.android.hardware.threadnetwork",
+    "version": 1
+}
diff --git a/threadnetwork/aidl/default/thread_chip.cpp b/threadnetwork/aidl/default/thread_chip.cpp
index 3d38cb8..9358eba 100644
--- a/threadnetwork/aidl/default/thread_chip.cpp
+++ b/threadnetwork/aidl/default/thread_chip.cpp
@@ -59,10 +59,6 @@
     AIBinder_DeathRecipient_setOnUnlinked(mDeathRecipient.get(), ThreadChip::onBinderUnlinkedJump);
 }
 
-ThreadChip::~ThreadChip() {
-    AIBinder_DeathRecipient_delete(mDeathRecipient.get());
-}
-
 void ThreadChip::onBinderDiedJump(void* context) {
     reinterpret_cast<ThreadChip*>(context)->onBinderDied();
 }
diff --git a/threadnetwork/aidl/default/thread_chip.hpp b/threadnetwork/aidl/default/thread_chip.hpp
index 1ab6d54..680580a 100644
--- a/threadnetwork/aidl/default/thread_chip.hpp
+++ b/threadnetwork/aidl/default/thread_chip.hpp
@@ -34,7 +34,7 @@
 class ThreadChip : public BnThreadChip, ot::Posix::Mainloop::Source {
   public:
     ThreadChip(char* url);
-    ~ThreadChip();
+    ~ThreadChip() {}
 
     ndk::ScopedAStatus open(const std::shared_ptr<IThreadChipCallback>& in_callback) override;
     ndk::ScopedAStatus close() override;
diff --git a/threadnetwork/aidl/default/threadnetwork-service-sim.rc b/threadnetwork/aidl/default/threadnetwork-service-sim.rc
new file mode 100644
index 0000000..3b889eb
--- /dev/null
+++ b/threadnetwork/aidl/default/threadnetwork-service-sim.rc
@@ -0,0 +1,3 @@
+service vendor.threadnetwork_hal /apex/com.android.hardware.threadnetwork/bin/hw/android.hardware.threadnetwork-service spinel+hdlc+forkpty:///apex/com.android.hardware.threadnetwork/bin/ot-rcp?forkpty-arg=1
+    class hal
+    user thread_network