diff --git a/fastboot/Android.bp b/fastboot/Android.bp
index bfe0768..b61fbd4 100644
--- a/fastboot/Android.bp
+++ b/fastboot/Android.bp
@@ -430,6 +430,7 @@
     ],
     data: [
         ":fastboot_test_dtb",
+        ":fastboot_test_dtb_replace",
         ":fastboot_test_bootconfig",
         ":fastboot_test_vendor_ramdisk_none",
         ":fastboot_test_vendor_ramdisk_platform",
diff --git a/fastboot/fastboot.cpp b/fastboot/fastboot.cpp
index 6b9e493..156dc3b 100644
--- a/fastboot/fastboot.cpp
+++ b/fastboot/fastboot.cpp
@@ -552,6 +552,12 @@
             "                            Secondary images may be flashed to inactive slot.\n"
             " flash PARTITION [FILENAME] Flash given partition, using the image from\n"
             "                            $ANDROID_PRODUCT_OUT if no filename is given.\n"
+            " flash vendor_boot:RAMDISK [FILENAME]\n"
+            "                            Flash vendor_boot ramdisk, fetching the existing\n"
+            "                            vendor_boot image and repackaging it with the new\n"
+            "                            ramdisk.\n"
+            " --dtb DTB                  If set with flash vendor_boot:RAMDISK, then\n"
+            "                            update the vendor_boot image with provided DTB.\n"
             "\n"
             "basics:\n"
             " devices [-l]               List devices in bootloader (-l: with device paths).\n"
@@ -1020,6 +1026,8 @@
 }
 
 int64_t get_sparse_limit(int64_t size, const FlashingPlan* fp) {
+    if (!fp) return 0;
+
     int64_t limit = int64_t(fp->sparse_limit);
     if (limit == 0) {
         // Unlimited, so see what the target device's limit is.
@@ -1465,6 +1473,7 @@
 static std::string repack_ramdisk(const char* pname, struct fastboot_buffer* buf,
                                   fastboot::IFastBootDriver* fb) {
     std::string_view pname_sv{pname};
+    struct fastboot_buffer dtb_buf = {.sz = 0, .fd = unique_fd(-1)};
 
     if (!android::base::StartsWith(pname_sv, "vendor_boot:") &&
         !android::base::StartsWith(pname_sv, "vendor_boot_a:") &&
@@ -1480,10 +1489,25 @@
     std::string partition(pname_sv.substr(0, pname_sv.find(':')));
     std::string ramdisk(pname_sv.substr(pname_sv.find(':') + 1));
 
+    if (!g_dtb_path.empty()) {
+        if (!load_buf(g_dtb_path.c_str(), &dtb_buf, nullptr)) {
+            die("cannot load '%s': %s", g_dtb_path.c_str(), strerror(errno));
+        }
+
+        if (dtb_buf.type != FB_BUFFER_FD) {
+            die("Flashing sparse vendor ramdisk image with dtb is not supported.");
+        }
+        if (dtb_buf.sz <= 0) {
+            die("repack_ramdisk() sees invalid dtb size: %" PRId64, buf->sz);
+        }
+        verbose("Updating DTB with %s", pname_sv.data());
+    }
+
     unique_fd vendor_boot(make_temporary_fd("vendor boot repack"));
     uint64_t vendor_boot_size = fetch_partition(partition, vendor_boot, fb);
     auto repack_res = replace_vendor_ramdisk(vendor_boot, vendor_boot_size, ramdisk, buf->fd,
-                                             static_cast<uint64_t>(buf->sz));
+                                             static_cast<uint64_t>(buf->sz), dtb_buf.fd,
+                                             static_cast<uint64_t>(dtb_buf.sz));
     if (!repack_res.ok()) {
         die("%s", repack_res.error().message().c_str());
     }
diff --git a/fastboot/fuzzer/fastboot_fuzzer.cpp b/fastboot/fuzzer/fastboot_fuzzer.cpp
index 60940fe..4594a8a 100644
--- a/fastboot/fuzzer/fastboot_fuzzer.cpp
+++ b/fastboot/fuzzer/fastboot_fuzzer.cpp
@@ -15,6 +15,7 @@
  *
  */
 #include <android-base/file.h>
+#include <android-base/unique_fd.h>
 #include "fastboot.h"
 #include "socket.h"
 #include "socket_mock_fuzz.h"
@@ -25,6 +26,7 @@
 #include <fuzzer/FuzzedDataProvider.h>
 
 using namespace std;
+using android::base::unique_fd;
 
 const size_t kYearMin = 2000;
 const size_t kYearMax = 2127;
@@ -255,7 +257,7 @@
     uint64_t ramdisk_size =
             fdp_->ConsumeBool() ? content_ramdisk_fd.size() : fdp_->ConsumeIntegral<uint64_t>();
     (void)replace_vendor_ramdisk(vendor_boot_fd, vendor_boot_size, ramdisk_name, ramdisk_fd,
-                                 ramdisk_size);
+                                 ramdisk_size, unique_fd(-1), 0);
     close(vendor_boot_fd);
     close(ramdisk_fd);
 }
diff --git a/fastboot/testdata/Android.bp b/fastboot/testdata/Android.bp
index a490fe2..47bf095 100644
--- a/fastboot/testdata/Android.bp
+++ b/fastboot/testdata/Android.bp
@@ -40,6 +40,14 @@
     cmd: "$(location fastboot_gen_rand) --seed dtb --length 1024 > $(out)",
 }
 
+// Fake dtb image for replacement.
+genrule {
+    name: "fastboot_test_dtb_replace",
+    defaults: ["fastboot_test_data_gen_defaults"],
+    out: ["dtb_replace.img"],
+    cmd: "$(location fastboot_gen_rand) --seed dtb --length 2048 > $(out)",
+}
+
 // Fake bootconfig image.
 genrule {
     name: "fastboot_test_bootconfig",
diff --git a/fastboot/vendor_boot_img_utils.cpp b/fastboot/vendor_boot_img_utils.cpp
index 9f05253..da547f1 100644
--- a/fastboot/vendor_boot_img_utils.cpp
+++ b/fastboot/vendor_boot_img_utils.cpp
@@ -209,7 +209,8 @@
 
 // Replace the vendor ramdisk as a whole.
 [[nodiscard]] Result<std::string> replace_default_vendor_ramdisk(const std::string& vendor_boot,
-                                                                 const std::string& new_ramdisk) {
+                                                                 const std::string& new_ramdisk,
+                                                                 const std::string& new_dtb) {
     if (auto res = check_vendor_boot_hdr(vendor_boot, 3); !res.ok()) return res.error();
     auto hdr = reinterpret_cast<const vendor_boot_img_hdr_v3*>(vendor_boot.data());
     auto hdr_size = get_vendor_boot_header_size(hdr);
@@ -244,8 +245,19 @@
         return res.error();
     if (auto res = updater.CheckOffset(o + p, o + new_p); !res.ok()) return res.error();
 
-    // Copy DTB (Q bytes).
-    if (auto res = updater.Copy(q); !res.ok()) return res.error();
+    // Copy DTB (Q bytes). Replace if a new one was provided.
+    new_hdr->dtb_size = !new_dtb.empty() ? new_dtb.size() : hdr->dtb_size;
+    const uint32_t new_q = round_up(new_hdr->dtb_size, new_hdr->page_size);
+    if (new_dtb.empty()) {
+        if (auto res = updater.Copy(q); !res.ok()) return res.error();
+    } else {
+        if (auto res = updater.Replace(hdr->dtb_size, new_dtb); !res.ok()) return res.error();
+        if (auto res = updater.Skip(q - hdr->dtb_size, new_q - new_hdr->dtb_size); !res.ok())
+            return res.error();
+    }
+    if (auto res = updater.CheckOffset(o + p + q, o + new_p + new_q); !res.ok()) {
+        return res.error();
+    }
 
     if (new_hdr->header_version >= 4) {
         auto hdr_v4 = static_cast<const vendor_boot_img_hdr_v4*>(hdr);
@@ -256,7 +268,7 @@
         auto new_hdr_v4 = static_cast<const vendor_boot_img_hdr_v4*>(new_hdr);
         auto new_r = round_up(new_hdr_v4->vendor_ramdisk_table_size, new_hdr->page_size);
         if (auto res = updater.Skip(r, new_r); !res.ok()) return res.error();
-        if (auto res = updater.CheckOffset(o + p + q + r, o + new_p + q + new_r); !res.ok())
+        if (auto res = updater.CheckOffset(o + p + q + r, o + new_p + new_q + new_r); !res.ok())
             return res.error();
 
         // Replace table with single entry representing the full ramdisk.
@@ -303,7 +315,8 @@
 // replace it with the content of |new_ramdisk|.
 [[nodiscard]] Result<std::string> replace_vendor_ramdisk_fragment(const std::string& ramdisk_name,
                                                                   const std::string& vendor_boot,
-                                                                  const std::string& new_ramdisk) {
+                                                                  const std::string& new_ramdisk,
+                                                                  const std::string& new_dtb) {
     if (auto res = check_vendor_boot_hdr(vendor_boot, 4); !res.ok()) return res.error();
     auto hdr = reinterpret_cast<const vendor_boot_img_hdr_v4*>(vendor_boot.data());
     auto hdr_size = get_vendor_boot_header_size(hdr);
@@ -368,8 +381,19 @@
         return res.error();
     if (auto res = updater.CheckOffset(o + p, o + new_p); !res.ok()) return res.error();
 
-    // Copy DTB (Q bytes).
-    if (auto res = updater.Copy(q); !res.ok()) return res.error();
+    // Copy DTB (Q bytes). Replace if a new one was provided.
+    new_hdr->dtb_size = !new_dtb.empty() ? new_dtb.size() : hdr->dtb_size;
+    const uint32_t new_q = round_up(new_hdr->dtb_size, new_hdr->page_size);
+    if (new_dtb.empty()) {
+        if (auto res = updater.Copy(q); !res.ok()) return res.error();
+    } else {
+        if (auto res = updater.Replace(hdr->dtb_size, new_dtb); !res.ok()) return res.error();
+        if (auto res = updater.Skip(q - hdr->dtb_size, new_q - new_hdr->dtb_size); !res.ok())
+            return res.error();
+    }
+    if (auto res = updater.CheckOffset(o + p + q, o + new_p + new_q); !res.ok()) {
+        return res.error();
+    }
 
     // Copy table, but with corresponding entries modified, including:
     // - ramdisk_size of the entry replaced
@@ -392,7 +416,7 @@
                                             hdr->vendor_ramdisk_table_entry_size);
         !res.ok())
         return res.error();
-    if (auto res = updater.CheckOffset(o + p + q + r, o + new_p + q + r); !res.ok())
+    if (auto res = updater.CheckOffset(o + p + q + r, o + new_p + new_q + r); !res.ok())
         return res.error();
 
     // Copy bootconfig (S bytes).
@@ -404,11 +428,11 @@
 
 }  // namespace
 
-[[nodiscard]] Result<void> replace_vendor_ramdisk(android::base::borrowed_fd vendor_boot_fd,
-                                                  uint64_t vendor_boot_size,
-                                                  const std::string& ramdisk_name,
-                                                  android::base::borrowed_fd new_ramdisk_fd,
-                                                  uint64_t new_ramdisk_size) {
+[[nodiscard]] Result<void> replace_vendor_ramdisk(
+        android::base::borrowed_fd vendor_boot_fd, uint64_t vendor_boot_size,
+        const std::string& ramdisk_name, android::base::borrowed_fd new_ramdisk_fd,
+        uint64_t new_ramdisk_size, android::base::borrowed_fd new_dtb_fd, uint64_t new_dtb_size) {
+    Result<std::string> new_dtb = {""};
     if (new_ramdisk_size > std::numeric_limits<uint32_t>::max()) {
         return Errorf("New vendor ramdisk is too big");
     }
@@ -417,12 +441,17 @@
     if (!vendor_boot.ok()) return vendor_boot.error();
     auto new_ramdisk = load_file(new_ramdisk_fd, new_ramdisk_size, "new vendor ramdisk");
     if (!new_ramdisk.ok()) return new_ramdisk.error();
+    if (new_dtb_size > 0 && new_dtb_fd >= 0) {
+        new_dtb = load_file(new_dtb_fd, new_dtb_size, "new dtb");
+        if (!new_dtb.ok()) return new_dtb.error();
+    }
 
     Result<std::string> new_vendor_boot;
     if (ramdisk_name == "default") {
-        new_vendor_boot = replace_default_vendor_ramdisk(*vendor_boot, *new_ramdisk);
+        new_vendor_boot = replace_default_vendor_ramdisk(*vendor_boot, *new_ramdisk, *new_dtb);
     } else {
-        new_vendor_boot = replace_vendor_ramdisk_fragment(ramdisk_name, *vendor_boot, *new_ramdisk);
+        new_vendor_boot =
+                replace_vendor_ramdisk_fragment(ramdisk_name, *vendor_boot, *new_ramdisk, *new_dtb);
     }
     if (!new_vendor_boot.ok()) return new_vendor_boot.error();
     if (auto res = store_file(vendor_boot_fd, *new_vendor_boot, "new vendor boot image"); !res.ok())
diff --git a/fastboot/vendor_boot_img_utils.h b/fastboot/vendor_boot_img_utils.h
index 0b702bc..0ca78da 100644
--- a/fastboot/vendor_boot_img_utils.h
+++ b/fastboot/vendor_boot_img_utils.h
@@ -31,4 +31,4 @@
 [[nodiscard]] android::base::Result<void> replace_vendor_ramdisk(
         android::base::borrowed_fd vendor_boot_fd, uint64_t vendor_boot_size,
         const std::string& ramdisk_name, android::base::borrowed_fd new_ramdisk_fd,
-        uint64_t new_ramdisk_size);
+        uint64_t new_ramdisk_size, android::base::borrowed_fd new_dtb_fd, uint64_t new_dtb_size);
diff --git a/fastboot/vendor_boot_img_utils_test.cpp b/fastboot/vendor_boot_img_utils_test.cpp
index 8107270..841e532 100644
--- a/fastboot/vendor_boot_img_utils_test.cpp
+++ b/fastboot/vendor_boot_img_utils_test.cpp
@@ -241,6 +241,7 @@
 
 struct RepackVendorBootImgTestParam {
     std::string vendor_boot_file_name;
+    std::string dtb_file_name;
     uint32_t expected_header_version;
     friend std::ostream& operator<<(std::ostream& os, const RepackVendorBootImgTestParam& param) {
         return os << param.vendor_boot_file_name;
@@ -252,22 +253,50 @@
     virtual void SetUp() {
         vboot = std::make_unique<ReadWriteTestFileHandle>(GetParam().vendor_boot_file_name);
         ASSERT_RESULT_OK(vboot->Open());
+
+        if (!GetParam().dtb_file_name.empty()) {
+            dtb_replacement = std::make_unique<ReadOnlyTestFileHandle>(GetParam().dtb_file_name);
+            ASSERT_RESULT_OK(dtb_replacement->Open());
+        }
     }
     std::unique_ptr<TestFileHandle> vboot;
+    std::unique_ptr<TestFileHandle> dtb_replacement;
 };
 
 TEST_P(RepackVendorBootImgTest, InvalidSize) {
-    EXPECT_ERROR(replace_vendor_ramdisk(vboot->fd(), vboot->size() + 1, "default",
-                                        env->replace->fd(), env->replace->size()),
-                 HasSubstr("Size of vendor boot does not match"));
-    EXPECT_ERROR(replace_vendor_ramdisk(vboot->fd(), vboot->size(), "default", env->replace->fd(),
-                                        env->replace->size() + 1),
-                 HasSubstr("Size of new vendor ramdisk does not match"));
+    EXPECT_ERROR(
+            replace_vendor_ramdisk(vboot->fd(), vboot->size() + 1, "default", env->replace->fd(),
+                                   env->replace->size(),
+                                   !GetParam().dtb_file_name.empty() ? dtb_replacement->fd()
+                                                                     : android::base::unique_fd(-1),
+                                   !GetParam().dtb_file_name.empty() ? dtb_replacement->size() : 0),
+            HasSubstr("Size of vendor boot does not match"));
+    EXPECT_ERROR(
+            replace_vendor_ramdisk(vboot->fd(), vboot->size(), "default", env->replace->fd(),
+                                   env->replace->size() + 1,
+                                   !GetParam().dtb_file_name.empty() ? dtb_replacement->fd()
+                                                                     : android::base::unique_fd(-1),
+                                   !GetParam().dtb_file_name.empty() ? dtb_replacement->size() : 0),
+            HasSubstr("Size of new vendor ramdisk does not match"));
+    if (!GetParam().dtb_file_name.empty()) {
+        EXPECT_ERROR(replace_vendor_ramdisk(vboot->fd(), vboot->size(), "default",
+                                            env->replace->fd(), env->replace->size(),
+                                            dtb_replacement->fd(), dtb_replacement->size() + 1),
+                     HasSubstr("Size of new dtb does not match"));
+    }
+    EXPECT_ERROR(
+            replace_vendor_ramdisk(
+                    vboot->fd(), vboot->size(), "default", env->replace->fd(), env->replace->size(),
+                    android::base::unique_fd(std::numeric_limits<int32_t>::max()), 1),
+            HasSubstr("Can't seek to the beginning of new dtb image"));
 }
 
 TEST_P(RepackVendorBootImgTest, ReplaceUnknown) {
-    auto res = replace_vendor_ramdisk(vboot->fd(), vboot->size(), "unknown", env->replace->fd(),
-                                      env->replace->size());
+    auto res = replace_vendor_ramdisk(
+            vboot->fd(), vboot->size(), "unknown", env->replace->fd(), env->replace->size(),
+            !GetParam().dtb_file_name.empty() ? dtb_replacement->fd()
+                                              : android::base::unique_fd(-1),
+            !GetParam().dtb_file_name.empty() ? dtb_replacement->size() : 0);
     if (GetParam().expected_header_version == 3) {
         EXPECT_ERROR(res, Eq("Require vendor boot header V4 but is V3"));
     } else if (GetParam().expected_header_version == 4) {
@@ -279,8 +308,11 @@
     auto old_content = vboot->Read();
     ASSERT_RESULT_OK(old_content);
 
-    ASSERT_RESULT_OK(replace_vendor_ramdisk(vboot->fd(), vboot->size(), "default",
-                                            env->replace->fd(), env->replace->size()));
+    ASSERT_RESULT_OK(replace_vendor_ramdisk(
+            vboot->fd(), vboot->size(), "default", env->replace->fd(), env->replace->size(),
+            !GetParam().dtb_file_name.empty() ? dtb_replacement->fd()
+                                              : android::base::unique_fd(-1),
+            !GetParam().dtb_file_name.empty() ? dtb_replacement->size() : 0));
     EXPECT_RESULT(vboot->fsize(), vboot->size()) << "File size should not change after repack";
 
     auto new_content_res = vboot->Read();
@@ -291,14 +323,23 @@
     ASSERT_EQ(0, memcmp(VENDOR_BOOT_MAGIC, hdr->magic, VENDOR_BOOT_MAGIC_SIZE));
     ASSERT_EQ(GetParam().expected_header_version, hdr->header_version);
     EXPECT_EQ(hdr->vendor_ramdisk_size, env->replace->size());
-    EXPECT_EQ(hdr->dtb_size, env->dtb->size());
+    if (GetParam().dtb_file_name.empty()) {
+        EXPECT_EQ(hdr->dtb_size, env->dtb->size());
+    } else {
+        EXPECT_EQ(hdr->dtb_size, dtb_replacement->size());
+    }
 
     auto o = round_up(sizeof(vendor_boot_img_hdr_v3), hdr->page_size);
     auto p = round_up(hdr->vendor_ramdisk_size, hdr->page_size);
     auto q = round_up(hdr->dtb_size, hdr->page_size);
 
     EXPECT_THAT(new_content.substr(o, p), IsPadded(env->replace_content));
-    EXPECT_THAT(new_content.substr(o + p, q), IsPadded(env->dtb_content));
+    if (GetParam().dtb_file_name.empty()) {
+        EXPECT_THAT(new_content.substr(o + p, q), IsPadded(env->dtb_content));
+    } else {
+        auto dtb_content_res = dtb_replacement->Read();
+        EXPECT_THAT(new_content.substr(o + p, q), IsPadded(*dtb_content_res));
+    }
 
     if (hdr->header_version < 4) return;
 
@@ -321,11 +362,17 @@
 
 INSTANTIATE_TEST_SUITE_P(
         RepackVendorBootImgTest, RepackVendorBootImgTest,
-        ::testing::Values(RepackVendorBootImgTestParam{"vendor_boot_v3.img", 3},
-                          RepackVendorBootImgTestParam{"vendor_boot_v4_with_frag.img", 4},
-                          RepackVendorBootImgTestParam{"vendor_boot_v4_without_frag.img", 4}),
+        ::testing::Values(RepackVendorBootImgTestParam{"vendor_boot_v3.img", "", 3},
+                          RepackVendorBootImgTestParam{"vendor_boot_v4_with_frag.img", "", 4},
+                          RepackVendorBootImgTestParam{"vendor_boot_v4_without_frag.img", "", 4},
+                          RepackVendorBootImgTestParam{"vendor_boot_v4_with_frag.img",
+                                                       "dtb_replace.img", 4},
+                          RepackVendorBootImgTestParam{"vendor_boot_v4_without_frag.img",
+                                                       "dtb_replace.img", 4}),
         [](const auto& info) {
-            return android::base::StringReplace(info.param.vendor_boot_file_name, ".", "_", false);
+            std::string test_name =
+                    android::base::StringReplace(info.param.vendor_boot_file_name, ".", "_", false);
+            return test_name + (!info.param.dtb_file_name.empty() ? "_replace_dtb" : "");
         });
 
 std::string_view GetRamdiskName(const vendor_ramdisk_table_entry_v4* entry) {
@@ -368,7 +415,8 @@
     ASSERT_RESULT_OK(old_content);
 
     ASSERT_RESULT_OK(replace_vendor_ramdisk(vboot->fd(), vboot->size(), replace_ramdisk_name,
-                                            env->replace->fd(), env->replace->size()));
+                                            env->replace->fd(), env->replace->size(),
+                                            android::base::unique_fd(-1), 0));
     EXPECT_RESULT(vboot->fsize(), vboot->size()) << "File size should not change after repack";
 
     auto new_content_res = vboot->Read();
diff --git a/fs_mgr/fs_mgr.cpp b/fs_mgr/fs_mgr.cpp
index fbd990b..9f52f44 100644
--- a/fs_mgr/fs_mgr.cpp
+++ b/fs_mgr/fs_mgr.cpp
@@ -1603,7 +1603,8 @@
                                    attempted_entry.fs_type,
                                    attempted_entry.fs_mgr_flags.is_zoned ? "true" : "false",
                                    std::to_string(attempted_entry.length),
-                                   android::base::Join(attempted_entry.user_devices, ' ')},
+                                   android::base::Join(attempted_entry.user_devices, ' '),
+                                   android::base::Join(attempted_entry.device_aliased, ' ')},
                                   nullptr)) {
                         LERROR << "Encryption failed";
                         set_type_property(encryptable);
@@ -1655,7 +1656,8 @@
                                formattable_entry->fs_type,
                                formattable_entry->fs_mgr_flags.is_zoned ? "true" : "false",
                                std::to_string(formattable_entry->length),
-                               android::base::Join(formattable_entry->user_devices, ' ')},
+                               android::base::Join(formattable_entry->user_devices, ' '),
+                               android::base::Join(formattable_entry->device_aliased, ' ')},
                               nullptr)) {
                     LERROR << "Encryption failed";
                 } else {
@@ -2213,11 +2215,11 @@
 
 #if ALLOW_ADBD_DISABLE_VERITY == 0
     // Allowlist the mount point if user build.
-    static const std::vector<const std::string> kAllowedPaths = {
+    static const std::vector<std::string> kAllowedPaths = {
             "/odm",         "/odm_dlkm",   "/oem",    "/product",
             "/system_dlkm", "/system_ext", "/vendor", "/vendor_dlkm",
     };
-    static const std::vector<const std::string> kAllowedPrefixes = {
+    static const std::vector<std::string> kAllowedPrefixes = {
             "/mnt/product/",
             "/mnt/vendor/",
     };
@@ -2314,6 +2316,14 @@
     return context;
 }
 
+int fs_mgr_f2fs_ideal_block_size() {
+#if defined(__i386__) || defined(__x86_64__)
+    return 4096;
+#else
+    return getpagesize();
+#endif
+}
+
 namespace android {
 namespace fs_mgr {
 
diff --git a/fs_mgr/fs_mgr_format.cpp b/fs_mgr/fs_mgr_format.cpp
index 0dde1d3..57e35a2 100644
--- a/fs_mgr/fs_mgr_format.cpp
+++ b/fs_mgr/fs_mgr_format.cpp
@@ -32,6 +32,7 @@
 #include <selinux/android.h>
 #include <selinux/label.h>
 #include <selinux/selinux.h>
+#include <filesystem>
 #include <string>
 
 #include "fs_mgr_priv.h"
@@ -126,7 +127,8 @@
 
 static int format_f2fs(const std::string& fs_blkdev, uint64_t dev_sz, bool needs_projid,
                        bool needs_casefold, bool fs_compress, bool is_zoned,
-                       const std::vector<std::string>& user_devices) {
+                       const std::vector<std::string>& user_devices,
+                       const std::vector<int>& device_aliased) {
     if (!dev_sz) {
         int rc = get_dev_sz(fs_blkdev, &dev_sz);
         if (rc) {
@@ -164,9 +166,15 @@
     if (is_zoned) {
         args.push_back("-m");
     }
-    for (auto& device : user_devices) {
+    for (size_t i = 0; i < user_devices.size(); i++) {
+        std::string device_name = user_devices[i];
+
         args.push_back("-c");
-        args.push_back(device.c_str());
+        if (device_aliased[i]) {
+            std::filesystem::path path = device_name;
+            device_name += "@" + path.filename().string();
+        }
+        args.push_back(device_name.c_str());
     }
 
     if (user_devices.empty()) {
@@ -191,7 +199,7 @@
     if (entry.fs_type == "f2fs") {
         return format_f2fs(entry.blk_device, entry.length, needs_projid, needs_casefold,
                            entry.fs_mgr_flags.fs_compress, entry.fs_mgr_flags.is_zoned,
-                           entry.user_devices);
+                           entry.user_devices, entry.device_aliased);
     } else if (entry.fs_type == "ext4") {
         return format_ext4(entry.blk_device, entry.mount_point, needs_projid,
                            entry.fs_mgr_flags.ext_meta_csum);
diff --git a/fs_mgr/fs_mgr_overlayfs_control.cpp b/fs_mgr/fs_mgr_overlayfs_control.cpp
index 08ad80c..489b32e 100644
--- a/fs_mgr/fs_mgr_overlayfs_control.cpp
+++ b/fs_mgr/fs_mgr_overlayfs_control.cpp
@@ -387,10 +387,8 @@
     auto command = ""s;
     if (!access(kMkF2fs, X_OK) && fs_mgr_filesystem_available("f2fs")) {
         fs_type = "f2fs";
-        command = kMkF2fs + " -w "s;
-        command += std::to_string(getpagesize());
         command = kMkF2fs + " -b "s;
-        command += std::to_string(getpagesize());
+        command += std::to_string(fs_mgr_f2fs_ideal_block_size());
         command += " -f -d1 -l" + android::base::Basename(kScratchMountPoint);
     } else if (!access(kMkExt4, X_OK) && fs_mgr_filesystem_available("ext4")) {
         fs_type = "ext4";
diff --git a/fs_mgr/include/fs_mgr.h b/fs_mgr/include/fs_mgr.h
index 9cfa93f..7969087 100644
--- a/fs_mgr/include/fs_mgr.h
+++ b/fs_mgr/include/fs_mgr.h
@@ -137,3 +137,6 @@
 // File name used to track if encryption was interrupted, leading to a known bad fs state
 std::string fs_mgr_metadata_encryption_in_progress_file_name(
         const android::fs_mgr::FstabEntry& entry);
+
+// Returns the ideal block size for make_f2fs. Returns -1 on failure.
+int fs_mgr_f2fs_ideal_block_size();
diff --git a/fs_mgr/libfstab/fstab.cpp b/fs_mgr/libfstab/fstab.cpp
index d344b2d..6e4cae1 100644
--- a/fs_mgr/libfstab/fstab.cpp
+++ b/fs_mgr/libfstab/fstab.cpp
@@ -173,6 +173,7 @@
         entry->fs_mgr_flags.is_zoned = true;
     }
     entry->user_devices.push_back(param[1]);
+    entry->device_aliased.push_back(param[0] == "exp_alias" ? 1 : 0);
 }
 
 bool ParseFsMgrFlags(const std::string& flags, FstabEntry* entry) {
diff --git a/fs_mgr/libfstab/include/fstab/fstab.h b/fs_mgr/libfstab/include/fstab/fstab.h
index 21fe017..070dd91 100644
--- a/fs_mgr/libfstab/include/fstab/fstab.h
+++ b/fs_mgr/libfstab/include/fstab/fstab.h
@@ -33,6 +33,7 @@
 struct FstabEntry {
     std::string blk_device;
     std::vector<std::string> user_devices;
+    std::vector<int> device_aliased;
     std::string logical_partition_name;
     std::string mount_point;
     std::string fs_type;
diff --git a/init/block_dev_initializer.cpp b/init/block_dev_initializer.cpp
index 8f52158..cabeb01 100644
--- a/init/block_dev_initializer.cpp
+++ b/init/block_dev_initializer.cpp
@@ -98,7 +98,11 @@
 
     LOG(VERBOSE) << __PRETTY_FUNCTION__ << ": found partition: " << name;
 
-    devices->erase(iter);
+    // Remove partition from the list only if it was found on boot device
+    if (device_handler_->IsBootDevice(uevent)) {
+        devices->erase(iter);
+    }
+
     device_handler_->HandleUevent(uevent);
     return devices->empty() ? ListenerAction::kStop : ListenerAction::kContinue;
 }
diff --git a/init/devices.cpp b/init/devices.cpp
index f2bb9d2..6a3a64d 100644
--- a/init/devices.cpp
+++ b/init/devices.cpp
@@ -188,6 +188,28 @@
     }
 }
 
+bool DeviceHandler::IsBootDevice(const Uevent& uevent) const {
+    std::string device;
+
+    if (FindPlatformDevice(uevent.path, &device)) {
+        // Skip /devices/platform or /devices/ if present
+        static constexpr std::string_view devices_platform_prefix = "/devices/platform/";
+        static constexpr std::string_view devices_prefix = "/devices/";
+
+        if (StartsWith(device, devices_platform_prefix)) {
+            device = device.substr(devices_platform_prefix.length());
+        } else if (StartsWith(device, devices_prefix)) {
+            device = device.substr(devices_prefix.length());
+        }
+    } else if (FindPciDevicePrefix(uevent.path, &device)) {
+    } else if (FindVbdDevicePrefix(uevent.path, &device)) {
+    } else {
+        return false;
+    }
+
+    return boot_devices_.find(device) != boot_devices_.end();
+}
+
 std::string DeviceHandler::GetPartitionNameForDevice(const std::string& query_device) {
     static const auto partition_map = [] {
         std::vector<std::pair<std::string, std::string>> partition_map;
diff --git a/init/devices.h b/init/devices.h
index 6da1232..4df604d 100644
--- a/init/devices.h
+++ b/init/devices.h
@@ -133,6 +133,7 @@
     // `androidboot.partition_map=vdb,metadata;vdc,userdata` maps `vdb` to `metadata` and `vdc` to
     // `userdata`.
     static std::string GetPartitionNameForDevice(const std::string& device);
+    bool IsBootDevice(const Uevent& uevent) const;
 
   private:
     void ColdbootDone() override;
diff --git a/libprocessgroup/processgroup.cpp b/libprocessgroup/processgroup.cpp
index d3719ee..9522159 100644
--- a/libprocessgroup/processgroup.cpp
+++ b/libprocessgroup/processgroup.cpp
@@ -37,19 +37,18 @@
 #include <mutex>
 #include <set>
 #include <string>
+#include <string_view>
 #include <thread>
 
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/properties.h>
 #include <android-base/stringprintf.h>
-#include <android-base/strings.h>
 #include <cutils/android_filesystem_config.h>
 #include <processgroup/processgroup.h>
 #include <task_profiles.h>
 
 using android::base::GetBoolProperty;
-using android::base::StartsWith;
 using android::base::StringPrintf;
 using android::base::WriteStringToFile;
 
@@ -255,7 +254,7 @@
                 continue;
             }
 
-            if (!StartsWith(dir->d_name, "pid_")) {
+            if (!std::string_view(dir->d_name).starts_with("pid_")) {
                 continue;
             }
 
@@ -296,7 +295,7 @@
                     continue;
                 }
 
-                if (!StartsWith(dir->d_name, "uid_")) {
+                if (!std::string_view(dir->d_name).starts_with("uid_")) {
                     continue;
                 }
 
diff --git a/libprocessgroup/task_profiles.cpp b/libprocessgroup/task_profiles.cpp
index f3594e3..dc6c8c0 100644
--- a/libprocessgroup/task_profiles.cpp
+++ b/libprocessgroup/task_profiles.cpp
@@ -204,9 +204,6 @@
     return true;
 }
 
-// To avoid issues in sdk_mac build
-#if defined(__ANDROID__)
-
 bool SetTimerSlackAction::ExecuteForTask(pid_t tid) const {
     const auto file = StringPrintf("/proc/%d/timerslack_ns", tid);
     if (!WriteStringToFile(std::to_string(slack_), file)) {
@@ -221,14 +218,6 @@
     return true;
 }
 
-#else
-
-bool SetTimerSlackAction::ExecuteForTask(int) const {
-    return true;
-};
-
-#endif
-
 bool SetAttributeAction::WriteValueToFile(const std::string& path) const {
     if (!WriteStringToFile(value_, path)) {
         if (access(path.c_str(), F_OK) < 0) {
diff --git a/mkbootfs/Android.bp b/mkbootfs/Android.bp
index cd2a624..e0191f0 100644
--- a/mkbootfs/Android.bp
+++ b/mkbootfs/Android.bp
@@ -6,7 +6,7 @@
 
 cc_binary_host {
     name: "mkbootfs",
-    srcs: ["mkbootfs.c"],
+    srcs: ["mkbootfs.cpp"],
     cflags: ["-Werror"],
     static_libs: [
         "libbase",
diff --git a/mkbootfs/mkbootfs.c b/mkbootfs/mkbootfs.cpp
similarity index 93%
rename from mkbootfs/mkbootfs.c
rename to mkbootfs/mkbootfs.cpp
index 84a0a4e..a45c6a2 100644
--- a/mkbootfs/mkbootfs.c
+++ b/mkbootfs/mkbootfs.cpp
@@ -19,6 +19,9 @@
 #include <private/android_filesystem_config.h>
 #include <private/fs_config.h>
 
+#include <android-base/file.h>
+#include <string>
+
 /* NOTES
 **
 ** - see https://www.kernel.org/doc/Documentation/early-userspace/buffer-format.txt
@@ -75,7 +78,7 @@
     }
 }
 
-static void _eject(struct stat *s, char *out, int olen, char *data, unsigned datasize)
+static void _eject(struct stat *s, const char *out, int olen, char *data, unsigned datasize)
 {
     // Nothing is special about this value, just picked something in the
     // approximate range that was being used already, and avoiding small
@@ -151,9 +154,10 @@
     DIR* d = opendir(in);
     if (d == NULL) err(1, "cannot open directory '%s'", in);
 
+    // TODO: switch to std::vector
     int size = 32;
     int entries = 0;
-    char** names = malloc(size * sizeof(char*));
+    char** names = (char**) malloc(size * sizeof(char*));
     if (names == NULL) {
       errx(1, "failed to allocate dir names array (size %d)", size);
     }
@@ -167,7 +171,7 @@
 
         if (entries >= size) {
           size *= 2;
-          names = realloc(names, size * sizeof(char*));
+          names = (char**) realloc(names, size * sizeof(char*));
           if (names == NULL) {
             errx(1, "failed to reallocate dir names array (size %d)", size);
           }
@@ -211,20 +215,12 @@
     if(lstat(in, &s)) err(1, "could not stat '%s'", in);
 
     if(S_ISREG(s.st_mode)){
-        int fd = open(in, O_RDONLY);
-        if(fd < 0) err(1, "cannot open '%s' for read", in);
-
-        char* tmp = (char*) malloc(s.st_size);
-        if(tmp == 0) errx(1, "cannot allocate %zd bytes", s.st_size);
-
-        if(read(fd, tmp, s.st_size) != s.st_size) {
-            err(1, "cannot read %zd bytes", s.st_size);
+        std::string content;
+        if (!android::base::ReadFileToString(in, &content)) {
+            err(1, "cannot read '%s'", in);
         }
 
-        _eject(&s, out, olen, tmp, s.st_size);
-
-        free(tmp);
-        close(fd);
+        _eject(&s, out, olen, content.data(), content.size());
     } else if(S_ISDIR(s.st_mode)) {
         _eject(&s, out, olen, 0, 0);
         _archive_dir(in, out, ilen, olen);
@@ -445,15 +441,12 @@
     int num_dirs = argc - optind;
     argv += optind;
 
-    while(num_dirs-- > 0){
+    while (num_dirs-- > 0){
         char *x = strchr(*argv, '=');
-        if(x != 0) {
-            *x++ = 0;
-        } else {
-            x = "";
+        if (x != nullptr) {
+            *x++ = '\0';
         }
-
-        archive(*argv, x);
+        archive(*argv, x ?: "");
 
         argv++;
     }
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 12d9c43..5bb64cc 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -70,6 +70,9 @@
 
     start ueventd
 
+    # Mount tracefs (with GID=AID_READTRACEFS)
+    mount tracefs tracefs /sys/kernel/tracing gid=3012
+
     # Run apexd-bootstrap so that APEXes that provide critical libraries
     # become available. Note that this is executed as exec_start to ensure that
     # the libraries are available to the processes started after this statement.
@@ -80,9 +83,6 @@
     mkdir /dev/boringssl 0755 root root
     mkdir /dev/boringssl/selftest 0755 root root
 
-    # Mount tracefs (with GID=AID_READTRACEFS)
-    mount tracefs tracefs /sys/kernel/tracing gid=3012
-
     # create sys dirctory
     mkdir /dev/sys 0755 system system
     mkdir /dev/sys/fs 0755 system system
diff --git a/trusty/keymaster/Android.bp b/trusty/keymaster/Android.bp
index aca59b6..cb07829 100644
--- a/trusty/keymaster/Android.bp
+++ b/trusty/keymaster/Android.bp
@@ -105,19 +105,17 @@
         "keymint/TrustySharedSecret.cpp",
         "keymint/service.cpp",
     ],
-    defaults: [
-        "keymint_use_latest_hal_aidl_ndk_shared",
-    ],
     shared_libs: [
+        "android.hardware.security.keymint-V3-ndk",
         "android.hardware.security.rkp-V3-ndk",
         "android.hardware.security.secureclock-V1-ndk",
         "android.hardware.security.sharedsecret-V1-ndk",
-        "lib_android_keymaster_keymint_utils",
+        "lib_android_keymaster_keymint_utils_V3",
         "libbase",
         "libbinder_ndk",
         "libhardware",
         "libkeymaster_messages",
-        "libkeymint",
+        "libkeymasterconfig",
         "liblog",
         "libtrusty",
         "libutils",