diff --git a/security/keymint/aidl/vts/functional/BootloaderStateTest.cpp b/security/keymint/aidl/vts/functional/BootloaderStateTest.cpp
index 62215f3..a799ab1 100644
--- a/security/keymint/aidl/vts/functional/BootloaderStateTest.cpp
+++ b/security/keymint/aidl/vts/functional/BootloaderStateTest.cpp
@@ -99,7 +99,7 @@
 // Check that the attested Verified Boot key is 32 bytes of zeroes since the bootloader is unlocked.
 TEST_P(BootloaderStateTest, VerifiedBootKeyAllZeroes) {
     // Gate this test to avoid waiver issues.
-    if (get_vsr_api_level() <= AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+    if (get_vendor_api_level() <= AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
         return;
     }
 
@@ -142,13 +142,13 @@
     avb_slot_verify_data_calculate_vbmeta_digest(avbSlotData, AVB_DIGEST_TYPE_SHA256,
                                                  sha256Digest.data());
 
-    if (get_vsr_api_level() >= AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+    if (get_vendor_api_level() >= AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
         ASSERT_TRUE(attestedVbmetaDigest_ == sha256Digest)
                 << "Attested VBMeta digest (" << bin2hex(attestedVbmetaDigest_)
                 << ") does not match the expected SHA-256 digest (" << bin2hex(sha256Digest)
                 << ").";
     } else {
-        // Prior to VSR-V, there was no MUST requirement for the algorithm used by the bootloader
+        // Prior to VSR-15, there was no MUST requirement for the algorithm used by the bootloader
         // to calculate the VBMeta digest. However, the only two supported options are SHA-256 and
         // SHA-512, so we expect the attested VBMeta digest to match one of these.
         vector<uint8_t> sha512Digest(AVB_SHA512_DIGEST_SIZE);
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
index 4429816..06e0f58 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.cpp
@@ -1435,12 +1435,11 @@
 }
 
 bool KeyMintAidlTestBase::IsRkpSupportRequired() const {
-    // This is technically not a match to the requirements for S chipsets,
-    // however when S shipped there was a bug in the test that skipped the
-    // tests if KeyMint 2 was not on the system. So we allowed many chipests
-    // to ship without RKP support. In T we hardened the requirements around
-    // support for RKP, so relax the test to match.
-    return get_vsr_api_level() >= __ANDROID_API_T__;
+    // This is technically weaker than the VSR-12 requirements, but when
+    // Android 12 shipped, there was a bug that skipped the tests if KeyMint
+    // 2 was not present. As a result, many chipsets were allowed to ship
+    // without RKP support. The RKP requirements were hardened in VSR-13.
+    return get_vendor_api_level() >= __ANDROID_API_T__;
 }
 
 vector<uint32_t> KeyMintAidlTestBase::ValidKeySizes(Algorithm algorithm) {
@@ -1691,11 +1690,11 @@
                                                  vector<uint8_t>* key_blob,
                                                  vector<KeyCharacteristics>* key_characteristics,
                                                  vector<Certificate>* cert_chain) {
-    // The original specification for KeyMint v1 required ATTEST_KEY not be combined
-    // with any other key purpose, but the original VTS tests incorrectly did exactly that.
-    // This means that a device that launched prior to Android T (API level 33) may
-    // accept or even require KeyPurpose::SIGN too.
-    if (get_vsr_api_level() < __ANDROID_API_T__) {
+    // The original specification for KeyMint v1 (introduced in Android 12) required ATTEST_KEY not
+    // be combined with any other key purpose, but the original VTS-12 tests incorrectly did exactly
+    // that. The tests were fixed in VTS-13 (vendor API level 33). This means that devices with
+    // vendor API level < 33 may accept or even require KeyPurpose::SIGN too.
+    if (get_vendor_api_level() < __ANDROID_API_T__) {
         AuthorizationSet key_desc_plus_sign = key_desc;
         key_desc_plus_sign.push_back(TAG_PURPOSE, KeyPurpose::SIGN);
 
@@ -1820,13 +1819,19 @@
     OPENSSL_free(cert_issuer);
 }
 
-int get_vsr_api_level() {
+int get_vendor_api_level() {
+    // Android 13+ builds have the `ro.vendor.api_level` system property. See
+    // https://source.android.com/docs/core/architecture/api-flags#determine_vendor_api_level_android_13.
     int vendor_api_level = ::android::base::GetIntProperty("ro.vendor.api_level", -1);
     if (vendor_api_level != -1) {
         return vendor_api_level;
     }
 
-    // Android S and older devices do not define ro.vendor.api_level
+    // Android 12 builds have the `ro.board.api_level` and `ro.board.first_api_level` system
+    // properties, which are only expected to be populated for GRF SoCs on Android 12 builds. Note
+    // that they are populated automatically by the build system starting in Android 15, but we use
+    // `ro.vendor.api_level` on such builds (see above). For details, see
+    // https://docs.partner.android.com/gms/building/integrating/extending-os-upgrade-support-windows#new-system-properties.
     vendor_api_level = ::android::base::GetIntProperty("ro.board.api_level", -1);
     if (vendor_api_level == -1) {
         vendor_api_level = ::android::base::GetIntProperty("ro.board.first_api_level", -1);
@@ -1838,11 +1843,12 @@
         EXPECT_NE(product_api_level, -1) << "Could not find ro.build.version.sdk";
     }
 
-    // VSR API level is the minimum of vendor_api_level and product_api_level.
-    if (vendor_api_level == -1 || vendor_api_level > product_api_level) {
+    // If the `ro.board.api_level` and `ro.board.first_api_level` properties aren't populated, it
+    // means the build doesn't have a GRF SoC, so the product API level should be used.
+    if (vendor_api_level == -1) {
         return product_api_level;
     }
-    return vendor_api_level;
+    return std::min(product_api_level, vendor_api_level);
 }
 
 bool is_gsi_image() {
@@ -1909,13 +1915,13 @@
         }
     }
 
-    if (get_vsr_api_level() > AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+    if (get_vendor_api_level() > AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
         // The Verified Boot key field should be exactly 32 bytes since it
         // contains the SHA-256 hash of the key on locked devices or 32 bytes
         // of zeroes on unlocked devices. This wasn't checked for earlier
-        // versions of the KeyMint HAL, so only only be strict for VSR-16+.
+        // versions of the KeyMint HAL, so we version-gate the strict check.
         EXPECT_EQ(verified_boot_key.size(), 32);
-    } else if (get_vsr_api_level() == AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+    } else if (get_vendor_api_level() == AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
         // The Verified Boot key field should be:
         //   - Exactly 32 bytes on locked devices since it should contain
         //     the SHA-256 hash of the key, or
@@ -1924,7 +1930,7 @@
         //     specification).
         // Thus, we can't check for strict equality in case unlocked devices
         // report values with less than 32 bytes. This wasn't checked for
-        // earlier versions of the KeyMint HAL, so only check on VSR-15.
+        // earlier versions of the KeyMint HAL, so we version-gate the check.
         EXPECT_LE(verified_boot_key.size(), 32);
     }
 
@@ -2416,7 +2422,7 @@
     } else if (result == ErrorCode::INVALID_TAG) {
         // Depending on the situation, other error codes may be acceptable.  First, allow older
         // implementations to use INVALID_TAG.
-        ASSERT_FALSE(get_vsr_api_level() > __ANDROID_API_T__)
+        ASSERT_FALSE(get_vendor_api_level() > __ANDROID_API_T__)
                 << "It is a specification violation for INVALID_TAG to be returned due to ID "
                 << "mismatch in a Device ID Attestation call. INVALID_TAG is only intended to "
                 << "be used for a case where updateAad() is called after update(). As of "
diff --git a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
index 1c12136..6c327bb 100644
--- a/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
+++ b/security/keymint/aidl/vts/functional/KeyMintAidlTestBase.h
@@ -406,8 +406,8 @@
     add_tag(tags, ttag, ::android::base::GetProperty(prop, /* default= */ ""));
 }
 
-// Return the VSR API level for this device.
-int get_vsr_api_level();
+// Return the vendor API level for this device.
+int get_vendor_api_level();
 
 // Indicate whether the test is running on a GSI image.
 bool is_gsi_image();
diff --git a/security/keymint/aidl/vts/functional/KeyMintTest.cpp b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
index e8a767b..743928e 100644
--- a/security/keymint/aidl/vts/functional/KeyMintTest.cpp
+++ b/security/keymint/aidl/vts/functional/KeyMintTest.cpp
@@ -4158,13 +4158,15 @@
  * when the EC_CURVE is not explicitly specified.
  */
 TEST_P(ImportKeyTest, EcdsaSuccessCurveNotSpecified) {
-    if (get_vsr_api_level() < AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
         /*
          * The KeyMint spec was previously not clear as to whether EC_CURVE was optional on import
-         * of EC keys. However, this was not checked at the time so we can only be strict about
-         * checking this for implementations at VSR-V or later.
+         * of EC keys. However, this was not checked at the time, so we version-gate the strict
+         * check.
          */
-        GTEST_SKIP() << "Skipping EC_CURVE on import only strict >= VSR-V";
+        GTEST_SKIP() << "Applies only to vendor API level >= 202404, but this device is: "
+                     << vendor_api_level;
     }
 
     ASSERT_EQ(ErrorCode::OK, ImportKey(AuthorizationSetBuilder()
@@ -5316,15 +5318,15 @@
         "8564");
 
 TEST_P(ImportWrappedKeyTest, RsaKey) {
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level < AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
         /*
          * The Keymaster v4 spec introduced `importWrappedKey()` and did not restrict it to
          * just symmetric keys.  However, the import of asymmetric wrapped keys was not tested
-         * at the time, so we can only be strict about checking this for implementations claiming
-         * support for VSR API level 35 and above.
+         * at the time, so we version-gate the strict check.
          */
-        GTEST_SKIP() << "Applies only to VSR API level 35, this device is: " << vsr_api_level;
+        GTEST_SKIP() << "Applies only to vendor API level >= 202404, but this device is: "
+                     << vendor_api_level;
     }
 
     auto wrapping_key_desc = AuthorizationSetBuilder()
@@ -5347,15 +5349,15 @@
 }
 
 TEST_P(ImportWrappedKeyTest, EcKey) {
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level < AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
         /*
          * The Keymaster v4 spec introduced `importWrappedKey()` and did not restrict it to
          * just symmetric keys.  However, the import of asymmetric wrapped keys was not tested
-         * at the time, so we can only be strict about checking this for implementations claiming
-         * support for VSR API level 35 and above.
+         * at the time, so we version-gate the strict check.
          */
-        GTEST_SKIP() << "Applies only to VSR API level 35, this device is: " << vsr_api_level;
+        GTEST_SKIP() << "Applies only to vendor API level >= 202404, but this device is: "
+                     << vendor_api_level;
     }
 
     auto wrapping_key_desc = AuthorizationSetBuilder()
@@ -8945,27 +8947,30 @@
 
 // @VsrTest = VSR-3.10-008
 TEST_P(VsrRequirementTest, Vsr13Test) {
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level < __ANDROID_API_T__) {
-        GTEST_SKIP() << "Applies only to VSR API level 33, this device is: " << vsr_api_level;
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < __ANDROID_API_T__) {
+        GTEST_SKIP() << "Applies only to vendor API level >= 33, but this device is: "
+                     << vendor_api_level;
     }
     EXPECT_GE(AidlVersion(), 2) << "VSR 13+ requires KeyMint version 2";
 }
 
 // @VsrTest = VSR-3.10-013.001
 TEST_P(VsrRequirementTest, Vsr14Test) {
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level < __ANDROID_API_U__) {
-        GTEST_SKIP() << "Applies only to VSR API level 34, this device is: " << vsr_api_level;
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < __ANDROID_API_U__) {
+        GTEST_SKIP() << "Applies only to vendor API level >= 34, but this device is: "
+                     << vendor_api_level;
     }
     EXPECT_GE(AidlVersion(), 3) << "VSR 14+ requires KeyMint version 3";
 }
 
 // @VsrTest = GMS-VSR-3.10-019
 TEST_P(VsrRequirementTest, Vsr16Test) {
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level <= AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
-        GTEST_SKIP() << "Applies only to VSR API level > 35, this device is: " << vsr_api_level;
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level <= AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+        GTEST_SKIP() << "Applies only to vendor API level > 202404, but this device is: "
+                     << vendor_api_level;
     }
     if (SecLevel() == SecurityLevel::STRONGBOX) {
         GTEST_SKIP() << "Applies only to TEE KeyMint, not StrongBox KeyMint";
diff --git a/security/keymint/aidl/vts/functional/SecureElementProvisioningTest.cpp b/security/keymint/aidl/vts/functional/SecureElementProvisioningTest.cpp
index 1f09328..5888644 100644
--- a/security/keymint/aidl/vts/functional/SecureElementProvisioningTest.cpp
+++ b/security/keymint/aidl/vts/functional/SecureElementProvisioningTest.cpp
@@ -115,13 +115,14 @@
         const auto& vbKey = rot->asArray()->get(pos++);
         ASSERT_TRUE(vbKey);
         ASSERT_TRUE(vbKey->asBstr());
-        if (get_vsr_api_level() > AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+        if (get_vendor_api_level() > AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
             // The Verified Boot key field should be exactly 32 bytes since it
             // contains the SHA-256 hash of the key on locked devices or 32 bytes
             // of zeroes on unlocked devices. This wasn't checked for earlier
-            // versions of the KeyMint HAL, so only only be strict for VSR-16+.
+            // versions of the KeyMint HAL, so we version-gate the strict check.
             ASSERT_EQ(vbKey->asBstr()->value().size(), 32);
-        } else if (get_vsr_api_level() == AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
+        } else if (get_vendor_api_level() ==
+                   AVendorSupport_getVendorApiLevelOf(__ANDROID_API_V__)) {
             // The Verified Boot key field should be:
             //   - Exactly 32 bytes on locked devices since it should contain
             //     the SHA-256 hash of the key, or
@@ -130,7 +131,7 @@
             //     specification).
             // Thus, we can't check for strict equality in case unlocked devices
             // report values with less than 32 bytes. This wasn't checked for
-            // earlier versions of the KeyMint HAL, so only check on VSR-15.
+            // earlier versions of the KeyMint HAL, so we version-gate the check.
             ASSERT_LE(vbKey->asBstr()->value().size(), 32);
         }
 
diff --git a/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp b/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp
index f40a752..810cc38 100644
--- a/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp
+++ b/security/rkp/aidl/vts/functional/VtsRemotelyProvisionedComponentTests.cpp
@@ -186,10 +186,10 @@
             if (status.getExceptionCode() == EX_UNSUPPORTED_OPERATION) {
                 GTEST_SKIP() << "The RKP VM is not supported on this system.";
             }
-            int apiLevel = get_vsr_api_level();
-            if (apiLevel < __ANDROID_API_V__) {
-                GTEST_SKIP() << "The RKP VM is supported only on V+ devices. Vendor API level: "
-                             << apiLevel;
+            int vendorApiLevel = get_vendor_api_level();
+            if (vendorApiLevel < __ANDROID_API_V__) {
+                GTEST_SKIP() << "The RKP VM is supported only on vendor API level >= 202404. This "
+                             << "device has vendor API level: " << vendorApiLevel;
             }
         }
         ASSERT_TRUE(status.isOk());
@@ -240,10 +240,10 @@
 // @VsrTest = 3.10-015
 // @VsrTest = 3.10-018.001
 TEST(NonParameterizedTests, requireDiceOnDefaultInstanceIfStrongboxPresent) {
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level < 35) {
-        GTEST_SKIP() << "Applies only to VSR API level 35 or newer, this device is: "
-                     << vsr_api_level;
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < __ANDROID_API_V__) {
+        GTEST_SKIP() << "Applies only to vendor API level >= 202404, but this device is: "
+                     << vendor_api_level;
     }
 
     if (!AServiceManager_isDeclared(KEYMINT_STRONGBOX_INSTANCE_NAME.c_str())) {
@@ -270,11 +270,11 @@
  */
 // @VsrTest = 7.1-003.001
 TEST(NonParameterizedTests, equalUdsPubInDiceCertChainForRkpVmAndPrimaryKeyMintInstances) {
-    int apiLevel = get_vsr_api_level();
-    if (apiLevel < 202504 && !AServiceManager_isDeclared(RKPVM_INSTANCE_NAME.c_str())) {
+    int vendorApiLevel = get_vendor_api_level();
+    if (vendorApiLevel < 202504 && !AServiceManager_isDeclared(RKPVM_INSTANCE_NAME.c_str())) {
         GTEST_SKIP() << "The RKP VM (" << RKPVM_INSTANCE_NAME << ") is not present on this device.";
     }
-    if (apiLevel >= 202504) {
+    if (vendorApiLevel >= 202504) {
         ASSERT_TRUE(AServiceManager_isDeclared(RKPVM_INSTANCE_NAME.c_str()));
     }
 
@@ -319,10 +319,10 @@
  */
 // @VsrTest = 3.10-018.003
 TEST(NonParameterizedTests, componentNameInConfigurationDescriptorForPrimaryKeyMintInstance) {
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level < 202504) {
-        GTEST_SKIP() << "Applies only to VSR API level 202504 or newer, this device is: "
-                     << vsr_api_level;
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < 202504) {
+        GTEST_SKIP() << "Applies only to vendor API level >= 202504, but this device is: "
+                     << vendor_api_level;
     }
 
     if (!AServiceManager_isDeclared(KEYMINT_STRONGBOX_INSTANCE_NAME.c_str())) {
@@ -1155,10 +1155,10 @@
 TEST_P(VsrRequirementTest, VsrEnforcementTest) {
     RpcHardwareInfo hwInfo;
     ASSERT_TRUE(provisionable_->getHardwareInfo(&hwInfo).isOk());
-    int vsr_api_level = get_vsr_api_level();
-    if (vsr_api_level < 34) {
-        GTEST_SKIP() << "Applies only to VSR API level 34 or newer, this device is: "
-                     << vsr_api_level;
+    int vendor_api_level = get_vendor_api_level();
+    if (vendor_api_level < __ANDROID_API_U__) {
+        GTEST_SKIP() << "Applies only to vendor API level >= 34, but this device is: "
+                     << vendor_api_level;
     }
     EXPECT_GE(hwInfo.versionNumber, 3)
             << "VSR 14+ requires IRemotelyProvisionedComponent v3 or newer.";