diff --git a/Android.bp b/Android.bp
index bd95705..4cdeba0 100644
--- a/Android.bp
+++ b/Android.bp
@@ -94,6 +94,8 @@
     shared_libs: [
         "android.hardware.boot@1.0",
         "android.hardware.boot@1.1",
+        "android.hardware.boot-V1-ndk",
+        "libboot_control_client",
         "libbase",
         "libbootloader_message",
         "libcrypto",
@@ -113,6 +115,8 @@
         "librecovery_utils",
         "libotautil",
         "libsnapshot_nobinder",
+        "libsnapshot_cow",
+        "liblz4",
         "update_metadata-protos",
     ],
 }
@@ -158,6 +162,7 @@
 
     shared_libs: [
         "android.hardware.health-V1-ndk", // from librecovery_utils
+        "android.hardware.boot-V1-ndk",
         "librecovery_ui",
     ],
 
diff --git a/bootloader_message/Android.bp b/bootloader_message/Android.bp
index 778fdb9..7622677 100644
--- a/bootloader_message/Android.bp
+++ b/bootloader_message/Android.bp
@@ -45,6 +45,7 @@
         "libbootloader_message_defaults",
     ],
     recovery_available: true,
+    vendor_available: true,
     host_supported: true,
 
     target: {
diff --git a/bootloader_message/bootloader_message.cpp b/bootloader_message/bootloader_message.cpp
index 1ea56cd..0a713ee 100644
--- a/bootloader_message/bootloader_message.cpp
+++ b/bootloader_message/bootloader_message.cpp
@@ -209,7 +209,11 @@
   memset(boot->command, 0, sizeof(boot->command));
   memset(boot->recovery, 0, sizeof(boot->recovery));
 
-  strlcpy(boot->command, "boot-recovery", sizeof(boot->command));
+  if (android::base::GetBoolProperty("ro.boot.quiescent", false)) {
+    strlcpy(boot->command, "boot-recovery,quiescent", sizeof(boot->command));
+  } else {
+    strlcpy(boot->command, "boot-recovery", sizeof(boot->command));
+  }
 
   std::string recovery = "recovery\n";
   for (const auto& s : options) {
diff --git a/bootloader_message/include/bootloader_message/bootloader_message.h b/bootloader_message/include/bootloader_message/bootloader_message.h
index d58158d..8fba101 100644
--- a/bootloader_message/include/bootloader_message/bootloader_message.h
+++ b/bootloader_message/include/bootloader_message/bootloader_message.h
@@ -109,6 +109,7 @@
 #define MISC_MEMTAG_MODE_MEMTAG_ONCE 0x2
 #define MISC_MEMTAG_MODE_MEMTAG_KERNEL 0x4
 #define MISC_MEMTAG_MODE_MEMTAG_KERNEL_ONCE 0x8
+#define MISC_MEMTAG_MODE_MEMTAG_OFF 0x10
 
 #if (__STDC_VERSION__ >= 201112L) || defined(__cplusplus)
 static_assert(sizeof(struct misc_virtual_ab_message) == 64,
diff --git a/etc/init.rc b/etc/init.rc
index e4afecf..03df27b 100644
--- a/etc/init.rc
+++ b/etc/init.rc
@@ -102,7 +102,7 @@
 on fs && property:sys.usb.configfs=1
     mount configfs none /config
     mkdir /config/usb_gadget/g1 0770 shell shell
-    write /config/usb_gadget/g1/idVendor 0x18D1
+    write /config/usb_gadget/g1/idVendor 0x${ro.recovery.usb.vid}
     mkdir /config/usb_gadget/g1/strings/0x409 0770
     write /config/usb_gadget/g1/strings/0x409/serialnumber ${ro.serialno}
     write /config/usb_gadget/g1/strings/0x409/manufacturer ${ro.product.manufacturer}
@@ -114,7 +114,7 @@
 
 on fs && property:sys.usb.configfs=0
     write /sys/class/android_usb/android0/f_ffs/aliases adb,fastboot
-    write /sys/class/android_usb/android0/idVendor 18D1
+    write /sys/class/android_usb/android0/idVendor ${ro.recovery.usb.vid}
     write /sys/class/android_usb/android0/iManufacturer ${ro.product.manufacturer}
     write /sys/class/android_usb/android0/iProduct ${ro.product.model}
     write /sys/class/android_usb/android0/iSerial ${ro.serialno}
@@ -139,19 +139,19 @@
     setprop sys.usb.state ${sys.usb.config}
 
 on property:sys.usb.config=adb && property:sys.usb.configfs=0
-    write /sys/class/android_usb/android0/idProduct D001
+    write /sys/class/android_usb/android0/idProduct ${ro.recovery.usb.adb.pid}
     write /sys/class/android_usb/android0/functions adb
     write /sys/class/android_usb/android0/enable 1
     setprop sys.usb.state ${sys.usb.config}
 
 on property:sys.usb.config=sideload && property:sys.usb.configfs=0
-    write /sys/class/android_usb/android0/idProduct D001
+    write /sys/class/android_usb/android0/idProduct ${ro.recovery.usb.adb.pid}
     write /sys/class/android_usb/android0/functions adb
     write /sys/class/android_usb/android0/enable 1
     setprop sys.usb.state ${sys.usb.config}
 
 on property:sys.usb.config=fastboot && property:sys.usb.configfs=0
-    write /sys/class/android_usb/android0/idProduct 4EE0
+    write /sys/class/android_usb/android0/idProduct ${ro.recovery.usb.fastboot.pid}
     write /sys/class/android_usb/android0/functions fastboot
     write /sys/class/android_usb/android0/enable 1
     setprop sys.usb.state ${sys.usb.config}
@@ -166,21 +166,21 @@
     setprop sys.usb.state ${sys.usb.config}
 
 on property:sys.usb.config=sideload && property:sys.usb.ffs.ready=1 && property:sys.usb.configfs=1
-    write /config/usb_gadget/g1/idProduct 0xD001
+    write /config/usb_gadget/g1/idProduct 0x${ro.recovery.usb.adb.pid}
     write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration "adb"
     symlink /config/usb_gadget/g1/functions/ffs.adb /config/usb_gadget/g1/configs/b.1/f1
     write /config/usb_gadget/g1/UDC ${sys.usb.controller}
     setprop sys.usb.state ${sys.usb.config}
 
 on property:sys.usb.config=adb && property:sys.usb.ffs.ready=1 && property:sys.usb.configfs=1
-    write /config/usb_gadget/g1/idProduct 0xD001
+    write /config/usb_gadget/g1/idProduct 0x${ro.recovery.usb.adb.pid}
     write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration "adb"
     symlink /config/usb_gadget/g1/functions/ffs.adb /config/usb_gadget/g1/configs/b.1/f1
     write /config/usb_gadget/g1/UDC ${sys.usb.controller}
     setprop sys.usb.state ${sys.usb.config}
 
 on property:sys.usb.config=fastboot && property:sys.usb.ffs.ready=1 && property:sys.usb.configfs=1
-    write /config/usb_gadget/g1/idProduct 0x4EE0
+    write /config/usb_gadget/g1/idProduct 0x${ro.recovery.usb.fastboot.pid}
     write /config/usb_gadget/g1/configs/b.1/strings/0x409/configuration "fastboot"
     symlink /config/usb_gadget/g1/functions/ffs.fastboot /config/usb_gadget/g1/configs/b.1/f1
     write /config/usb_gadget/g1/UDC ${sys.usb.controller}
diff --git a/install/install.cpp b/install/install.cpp
index 83f3cad..044856b 100644
--- a/install/install.cpp
+++ b/install/install.cpp
@@ -551,7 +551,9 @@
   } else {
     LOG(FATAL) << "Invalid status code " << status;
   }
-  PerformPowerwashIfRequired(zip, device);
+  if (package_is_ab) {
+    PerformPowerwashIfRequired(zip, device);
+  }
 
   return INSTALL_SUCCESS;
 }
diff --git a/install/wipe_data.cpp b/install/wipe_data.cpp
index 024c1e1..c65e6f4 100644
--- a/install/wipe_data.cpp
+++ b/install/wipe_data.cpp
@@ -25,6 +25,7 @@
 #include <android-base/logging.h>
 #include <android-base/stringprintf.h>
 
+#include "bootloader_message/bootloader_message.h"
 #include "install/snapshot_utils.h"
 #include "otautil/dirutil.h"
 #include "recovery_ui/ui.h"
@@ -100,6 +101,12 @@
       success &= EraseVolume(METADATA_ROOT, ui);
     }
   }
+  ui->Print("Resetting memtag message...\n");
+  std::string err;
+  if (!WriteMiscMemtagMessage({}, &err)) {
+    ui->Print("Failed to reset memtag message: %s\n", err.c_str());
+    success = false;
+  }
   if (success) {
     success &= device->PostWipeData();
   }
diff --git a/minadbd/OWNERS b/minadbd/OWNERS
new file mode 100644
index 0000000..8ee79dd
--- /dev/null
+++ b/minadbd/OWNERS
@@ -0,0 +1,2 @@
+enh@google.com
+shaju@google.com
diff --git a/minadbd/minadbd_services.cpp b/minadbd/minadbd_services.cpp
index 0abe867..16bcb5e 100644
--- a/minadbd/minadbd_services.cpp
+++ b/minadbd/minadbd_services.cpp
@@ -305,7 +305,7 @@
   }
 }
 
-asocket* daemon_service_to_socket(std::string_view) {
+asocket* daemon_service_to_socket(std::string_view, atransport*) {
   return nullptr;
 }
 
diff --git a/minui/graphics.cpp b/minui/graphics.cpp
index b24c2b1..41a3661 100644
--- a/minui/graphics.cpp
+++ b/minui/graphics.cpp
@@ -502,3 +502,7 @@
 void gr_rotate(GRRotation rot) {
   rotation = rot;
 }
+
+bool gr_has_multiple_connectors() {
+  return gr_backend->HasMultipleConnectors();
+}
diff --git a/minui/graphics.h b/minui/graphics.h
index 5408c93..ff063ae 100644
--- a/minui/graphics.h
+++ b/minui/graphics.h
@@ -40,8 +40,11 @@
   // Blank (or unblank) the specific screen.
   virtual void Blank(bool blank, DrmConnector index) = 0;
 
+  // Return true if the device supports multiple connectors.
+  virtual bool HasMultipleConnectors() = 0;
+
   // Device cleanup when drawing is done.
-  virtual ~MinuiBackend() {};
+  virtual ~MinuiBackend() = default;
 };
 
 #endif  // _GRAPHICS_H_
diff --git a/minui/graphics_drm.cpp b/minui/graphics_drm.cpp
index c557022..6c3a5bd 100644
--- a/minui/graphics_drm.cpp
+++ b/minui/graphics_drm.cpp
@@ -200,6 +200,10 @@
   }
 }
 
+bool MinuiBackendDrm::HasMultipleConnectors() {
+  return (drm[DRM_SEC].GRSurfaceDrms[0] && drm[DRM_SEC].GRSurfaceDrms[1]);
+}
+
 static drmModeCrtc* find_crtc_for_connector(int fd, drmModeRes* resources,
                                             drmModeConnector* connector) {
   // Find the encoder. If we already have one, just use it.
diff --git a/minui/graphics_drm.h b/minui/graphics_drm.h
index fe3beaf..a8c9886 100644
--- a/minui/graphics_drm.h
+++ b/minui/graphics_drm.h
@@ -60,6 +60,7 @@
   GRSurface* Flip() override;
   void Blank(bool) override;
   void Blank(bool blank, DrmConnector index) override;
+  bool HasMultipleConnectors() override;
 
  private:
   void DrmDisableCrtc(int drm_fd, drmModeCrtc* crtc);
diff --git a/minui/graphics_fbdev.cpp b/minui/graphics_fbdev.cpp
index 1cb0c0a..2711af7 100644
--- a/minui/graphics_fbdev.cpp
+++ b/minui/graphics_fbdev.cpp
@@ -44,7 +44,16 @@
 }
 
 void MinuiBackendFbdev::Blank(bool blank, DrmConnector index) {
-  fprintf(stderr, "Unsupported multiple connectors, blank = %d, index = %d\n", blank, index);
+  if (index == DRM_MAIN) {
+    MinuiBackendFbdev::Blank(blank);
+  } else {
+    fprintf(stderr, "Unsupported multiple connectors, blank = %d, index = %d\n", blank, index);
+  }
+}
+
+bool MinuiBackendFbdev::HasMultipleConnectors() {
+  fprintf(stderr, "Unsupported multiple connectors\n");
+  return false;
 }
 
 void MinuiBackendFbdev::SetDisplayedFramebuffer(size_t n) {
diff --git a/minui/graphics_fbdev.h b/minui/graphics_fbdev.h
index 7e193c4..c772428 100644
--- a/minui/graphics_fbdev.h
+++ b/minui/graphics_fbdev.h
@@ -57,6 +57,7 @@
   GRSurface* Flip() override;
   void Blank(bool) override;
   void Blank(bool blank, DrmConnector index) override;
+  bool HasMultipleConnectors() override;
 
  private:
   void SetDisplayedFramebuffer(size_t n);
diff --git a/minui/include/minui/minui.h b/minui/include/minui/minui.h
index f9be82f..2353ed3 100644
--- a/minui/include/minui/minui.h
+++ b/minui/include/minui/minui.h
@@ -129,6 +129,7 @@
 void gr_flip();
 void gr_fb_blank(bool blank);
 void gr_fb_blank(bool blank, int index);
+bool gr_has_multiple_connectors();
 
 // Clears entire surface to current color.
 void gr_clear();
diff --git a/otautil/verifier.cpp b/otautil/verifier.cpp
index 8a65566..83ad708 100644
--- a/otautil/verifier.cpp
+++ b/otautil/verifier.cpp
@@ -309,13 +309,15 @@
 }
 
 static std::vector<Certificate> IterateZipEntriesAndSearchForKeys(const ZipArchiveHandle& handle) {
-  void* cookie;
+  void* cookie{};
+
   int32_t iter_status = StartIteration(handle, &cookie, "", "x509.pem");
   if (iter_status != 0) {
     LOG(ERROR) << "Failed to iterate over entries in the certificate zipfile: "
                << ErrorCodeString(iter_status);
     return {};
   }
+  std::unique_ptr<void, decltype(&EndIteration)> cookie_guard(cookie, &EndIteration);
 
   std::vector<Certificate> result;
 
diff --git a/recovery-persist.cpp b/recovery-persist.cpp
index ad101ed..55699b2 100644
--- a/recovery-persist.cpp
+++ b/recovery-persist.cpp
@@ -77,6 +77,10 @@
   }
 }
 
+static bool file_exists(const char* filename) {
+  return access(filename, R_OK) == 0;
+}
+
 static bool rotated = false;
 
 ssize_t logsave(
@@ -141,7 +145,7 @@
     if (has_cache) {
       // Collects and reports the non-a/b update metrics from last_install; and removes the file
       // to avoid duplicate report.
-      if (access(LAST_INSTALL_FILE_IN_CACHE, F_OK) && unlink(LAST_INSTALL_FILE_IN_CACHE) == -1) {
+      if (file_exists(LAST_INSTALL_FILE_IN_CACHE) && unlink(LAST_INSTALL_FILE_IN_CACHE) == -1) {
         PLOG(ERROR) << "Failed to unlink " << LAST_INSTALL_FILE_IN_CACHE;
       }
 
@@ -152,9 +156,9 @@
       }
     }
 
-    /* Is there something in pmsg? */
-    if (access(LAST_PMSG_FILE, R_OK)) {
-        return 0;
+    /* Is there something in pmsg? If not, no need to proceed. */
+    if (!file_exists(LAST_PMSG_FILE)) {
+      return 0;
     }
 
     // Take last pmsg file contents and send it off to the logsave
@@ -164,18 +168,18 @@
     // For those device without /cache, the last_install file has been copied to
     // /data/misc/recovery from pmsg. Looks for the sideload history only.
     if (!has_cache) {
-      if (access(LAST_INSTALL_FILE, F_OK) && unlink(LAST_INSTALL_FILE) == -1) {
+      if (file_exists(LAST_INSTALL_FILE) && unlink(LAST_INSTALL_FILE) == -1) {
         PLOG(ERROR) << "Failed to unlink " << LAST_INSTALL_FILE;
       }
     }
 
     /* Is there a last console log too? */
     if (rotated) {
-        if (!access(LAST_CONSOLE_FILE, R_OK)) {
-            copy_file(LAST_CONSOLE_FILE, LAST_KMSG_FILE);
-        } else if (!access(ALT_LAST_CONSOLE_FILE, R_OK)) {
-            copy_file(ALT_LAST_CONSOLE_FILE, LAST_KMSG_FILE);
-        }
+      if (file_exists(LAST_CONSOLE_FILE)) {
+        copy_file(LAST_CONSOLE_FILE, LAST_KMSG_FILE);
+      } else if (file_exists(ALT_LAST_CONSOLE_FILE)) {
+        copy_file(ALT_LAST_CONSOLE_FILE, LAST_KMSG_FILE);
+      }
     }
 
     return 0;
diff --git a/recovery_ui/include/recovery_ui/screen_ui.h b/recovery_ui/include/recovery_ui/screen_ui.h
index 92b3c25..99ad534 100644
--- a/recovery_ui/include/recovery_ui/screen_ui.h
+++ b/recovery_ui/include/recovery_ui/screen_ui.h
@@ -245,6 +245,9 @@
       const std::vector<std::string>& backup_headers, const std::vector<std::string>& backup_items,
       const std::function<int(int, bool)>& key_handler) override;
 
+  // For Lid switch handle
+  int SetSwCallback(int code, int value) override;
+
  protected:
   static constexpr int kMenuIndent = 4;
 
@@ -404,6 +407,9 @@
 
   std::mutex updateMutex;
 
+  // Switch the display to active one after graphics is ready
+  bool is_graphics_available;
+
  private:
   void SetLocale(const std::string&);
 
diff --git a/recovery_ui/include/recovery_ui/stub_ui.h b/recovery_ui/include/recovery_ui/stub_ui.h
index 511b131..49689ba 100644
--- a/recovery_ui/include/recovery_ui/stub_ui.h
+++ b/recovery_ui/include/recovery_ui/stub_ui.h
@@ -80,6 +80,10 @@
   }
 
   void SetTitle(const std::vector<std::string>& /* lines */) override {}
+
+  int SetSwCallback(int /* code */, int /* value */) override {
+    return 0;
+  }
 };
 
 #endif  // RECOVERY_STUB_UI_H
diff --git a/recovery_ui/include/recovery_ui/ui.h b/recovery_ui/include/recovery_ui/ui.h
index 512732f..c3e3ee2 100644
--- a/recovery_ui/include/recovery_ui/ui.h
+++ b/recovery_ui/include/recovery_ui/ui.h
@@ -231,6 +231,8 @@
   bool InitScreensaver();
   void SetScreensaverState(ScreensaverState state);
 
+  virtual int SetSwCallback(int code, int value) = 0;
+
   // Key event input queue
   std::mutex key_queue_mutex;
   std::condition_variable key_queue_cond;
diff --git a/recovery_ui/screen_ui.cpp b/recovery_ui/screen_ui.cpp
index b2c828f..ee3cbb1 100644
--- a/recovery_ui/screen_ui.cpp
+++ b/recovery_ui/screen_ui.cpp
@@ -48,6 +48,11 @@
 #include "recovery_ui/device.h"
 #include "recovery_ui/ui.h"
 
+enum DirectRenderManager {
+    DRM_INNER,
+    DRM_OUTER,
+};
+
 // Return the current time as a double (including fractions of a second).
 static double now() {
   struct timeval tv;
@@ -334,7 +339,8 @@
       stage(-1),
       max_stage(-1),
       locale_(""),
-      rtl_locale_(false) {}
+      rtl_locale_(false),
+      is_graphics_available(false) {}
 
 ScreenRecoveryUI::~ScreenRecoveryUI() {
   progress_thread_stopped_ = true;
@@ -906,6 +912,7 @@
   if (!InitGraphics()) {
     return false;
   }
+  is_graphics_available = true;
 
   if (!InitTextParams()) {
     return false;
@@ -950,6 +957,9 @@
   // Keep the progress bar updated, even when the process is otherwise busy.
   progress_thread_ = std::thread(&ScreenRecoveryUI::ProgressThreadLoop, this);
 
+  // set the callback for hall sensor event
+  (void)ev_sync_sw_state([this](auto&& a, auto&& b) { return this->SetSwCallback(a, b);});
+
   return true;
 }
 
@@ -1367,3 +1377,45 @@
     }
   }
 }
+
+int ScreenRecoveryUI::SetSwCallback(int code, int value) {
+  if (!is_graphics_available) { return -1; }
+  if (code > SW_MAX) { return -1; }
+  if (code != SW_LID) { return 0; }
+
+  /* detect dual display */
+  if (!gr_has_multiple_connectors()) { return -1; }
+
+  /* turn off all screen */
+  gr_fb_blank(true, DirectRenderManager::DRM_INNER);
+  gr_fb_blank(true, DirectRenderManager::DRM_OUTER);
+  gr_color(0, 0, 0, 255);
+  gr_clear();
+
+  /* turn on the screen */
+  gr_fb_blank(false, value);
+  gr_flip();
+
+  /* set the retation */
+  std::string rotation_str;
+  if (value == DirectRenderManager::DRM_OUTER) {
+    rotation_str =
+      android::base::GetProperty("ro.minui.second_rotation", "ROTATION_NONE");
+  } else {
+    rotation_str =
+      android::base::GetProperty("ro.minui.default_rotation", "ROTATION_NONE");
+  }
+
+  if (rotation_str == "ROTATION_RIGHT") {
+    gr_rotate(GRRotation::RIGHT);
+  } else if (rotation_str == "ROTATION_DOWN") {
+    gr_rotate(GRRotation::DOWN);
+  } else if (rotation_str == "ROTATION_LEFT") {
+    gr_rotate(GRRotation::LEFT);
+  } else {  // "ROTATION_NONE" or unknown string
+    gr_rotate(GRRotation::NONE);
+  }
+  Redraw();
+
+  return 0;
+}
diff --git a/recovery_ui/ui.cpp b/recovery_ui/ui.cpp
index 6e67b1d..eb87f52 100644
--- a/recovery_ui/ui.cpp
+++ b/recovery_ui/ui.cpp
@@ -341,6 +341,11 @@
     ProcessKey(ev.code, ev.value);
   }
 
+  // For Lid switch handle
+  if (ev.type == EV_SW) {
+    SetSwCallback(ev.code, ev.value);
+  }
+
   return 0;
 }
 
diff --git a/tools/image_generator/ImageGenerator.java b/tools/image_generator/ImageGenerator.java
index 6c5ea4b..00264b1 100644
--- a/tools/image_generator/ImageGenerator.java
+++ b/tools/image_generator/ImageGenerator.java
@@ -16,6 +16,8 @@
 
 package com.android.recovery.tools;
 
+import static java.util.Map.entry;
+
 import com.ibm.icu.text.BreakIterator;
 
 import org.apache.commons.cli.CommandLine;
@@ -111,49 +113,43 @@
     // https://www.iana.org/assignments/language-subtag-registry/language-subtag-registry
     private static final String DEFAULT_FONT_NAME = "Roboto-Regular";
     private static final Map<String, String> LANGUAGE_TO_FONT_MAP =
-            new TreeMap<String, String>() {
-                {
-                    put("am", "NotoSansEthiopic-VF");
-                    put("ar", "NotoNaskhArabicUI-Regular");
-                    put("as", "NotoSansBengaliUI-VF");
-                    put("bn", "NotoSansBengaliUI-VF");
-                    put("fa", "NotoNaskhArabicUI-Regular");
-                    put("gu", "NotoSansGujaratiUI-Regular");
-                    put("hi", "NotoSansDevanagariUI-VF");
-                    put("hy", "NotoSansArmenian-VF");
-                    put("iw", "NotoSansHebrew-Regular");
-                    put("ja", "NotoSansCJK-Regular");
-                    put("ka", "NotoSansGeorgian-VF");
-                    put("ko", "NotoSansCJK-Regular");
-                    put("km", "NotoSansKhmerUI-Regular");
-                    put("kn", "NotoSansKannadaUI-VF");
-                    put("lo", "NotoSansLaoUI-Regular");
-                    put("ml", "NotoSansMalayalamUI-VF");
-                    put("mr", "NotoSansDevanagariUI-VF");
-                    put("my", "NotoSansMyanmarUI-Regular");
-                    put("ne", "NotoSansDevanagariUI-VF");
-                    put("or", "NotoSansOriya-Regular");
-                    put("pa", "NotoSansGurmukhiUI-VF");
-                    put("si", "NotoSansSinhalaUI-VF");
-                    put("ta", "NotoSansTamilUI-VF");
-                    put("te", "NotoSansTeluguUI-VF");
-                    put("th", "NotoSansThaiUI-Regular");
-                    put("ur", "NotoNaskhArabicUI-Regular");
-                    put("zh", "NotoSansCJK-Regular");
-                }
-            };
+            Map.ofEntries(
+                entry("am", "NotoSansEthiopic-VF"),
+                entry("ar", "NotoNaskhArabicUI-Regular"),
+                entry("as", "NotoSansBengaliUI-VF"),
+                entry("bn", "NotoSansBengaliUI-VF"),
+                entry("fa", "NotoNaskhArabicUI-Regular"),
+                entry("gu", "NotoSansGujaratiUI-Regular"),
+                entry("hi", "NotoSansDevanagariUI-VF"),
+                entry("hy", "NotoSansArmenian-VF"),
+                entry("iw", "NotoSansHebrew-Regular"),
+                entry("ja", "NotoSansCJK-Regular"),
+                entry("ka", "NotoSansGeorgian-VF"),
+                entry("ko", "NotoSansCJK-Regular"),
+                entry("km", "NotoSansKhmerUI-Regular"),
+                entry("kn", "NotoSansKannadaUI-VF"),
+                entry("lo", "NotoSansLaoUI-Regular"),
+                entry("ml", "NotoSansMalayalamUI-VF"),
+                entry("mr", "NotoSansDevanagariUI-VF"),
+                entry("my", "NotoSansMyanmarUI-Regular"),
+                entry("ne", "NotoSansDevanagariUI-VF"),
+                entry("or", "NotoSansOriya-Regular"),
+                entry("pa", "NotoSansGurmukhiUI-VF"),
+                entry("si", "NotoSansSinhalaUI-VF"),
+                entry("ta", "NotoSansTamilUI-VF"),
+                entry("te", "NotoSansTeluguUI-VF"),
+                entry("th", "NotoSansThaiUI-Regular"),
+                entry("ur", "NotoNaskhArabicUI-Regular"),
+                entry("zh", "NotoSansCJK-Regular"));
 
     // Languages that write from right to left.
     private static final Set<String> RTL_LANGUAGE =
-            new HashSet<String>() {
-                {
-                    add("ar"); // Arabic
-                    add("fa"); // Persian
-                    add("he"); // Hebrew
-                    add("iw"); // Hebrew
-                    add("ur"); // Urdu
-                }
-            };
+            Set.of(
+                "ar",  // Arabic
+                "fa",  // Persian
+                "he",  // Hebrew
+                "iw",  // Hebrew
+                "ur"); // Urdu
 
     /** Exception to indicate the failure to find the translated text strings. */
     public static class LocalizedStringNotFoundException extends Exception {
diff --git a/update_verifier/Android.bp b/update_verifier/Android.bp
index 220b007..26ff530 100644
--- a/update_verifier/Android.bp
+++ b/update_verifier/Android.bp
@@ -39,14 +39,6 @@
         "care_map.proto",
     ],
     proto: {type: "lite", canonical_path_from_root: false},
-    version: {
-        py2: {
-            enabled: true,
-        },
-        py3: {
-            enabled: true,
-        },
-    },
     visibility: [
         "//build/make/tools/releasetools:__subpackages__",
     ],
@@ -73,8 +65,13 @@
         "libvold_binder",
     ],
 
+    whole_static_libs: [
+        "libsnapshot_snapuserd",
+    ],
+
     shared_libs: [
         "android.hardware.boot@1.0",
+        "libboot_control_client",
         "libbase",
         "libcutils",
         "libbinder",
@@ -114,6 +111,7 @@
         "libprotobuf-cpp-lite",
         "libbinder",
         "libutils",
+        "libboot_control_client",
     ],
 
     init_rc: [
@@ -139,12 +137,7 @@
     },
 
     version: {
-        py2: {
-            enabled: false,
-            embedded_launcher: false,
-        },
         py3: {
-            enabled: true,
             embedded_launcher: true,
         },
     },
diff --git a/update_verifier/include/update_verifier/update_verifier.h b/update_verifier/include/update_verifier/update_verifier.h
index 4c64b1e..0cccc90 100644
--- a/update_verifier/include/update_verifier/update_verifier.h
+++ b/update_verifier/include/update_verifier/update_verifier.h
@@ -21,6 +21,7 @@
 #include <string>
 #include <vector>
 
+#include <snapuserd/snapuserd_client.h>
 #include "otautil/rangeset.h"
 
 // The update verifier performs verification upon the first boot to a new slot on A/B devices.
@@ -68,4 +69,8 @@
 
   // The function to read the device property; default value: android::base::GetProperty()
   std::function<std::string(const std::string&)> property_reader_;
+
+  // Check if snapuserd daemon has already completed the update verification
+  // Applicable only for VABC with userspace snapshots
+  bool CheckVerificationStatus();
 };
diff --git a/update_verifier/update_verifier.cpp b/update_verifier/update_verifier.cpp
index a042f90..ea47a65 100644
--- a/update_verifier/update_verifier.cpp
+++ b/update_verifier/update_verifier.cpp
@@ -52,13 +52,14 @@
 #include <future>
 #include <thread>
 
+#include <BootControlClient.h>
+#include <android-base/chrono_utils.h>
 #include <android-base/file.h>
 #include <android-base/logging.h>
 #include <android-base/parseint.h>
 #include <android-base/properties.h>
 #include <android-base/strings.h>
 #include <android-base/unique_fd.h>
-#include <android/hardware/boot/1.0/IBootControl.h>
 #include <android/os/IVold.h>
 #include <binder/BinderService.h>
 #include <binder/Status.h>
@@ -66,11 +67,6 @@
 
 #include "care_map.pb.h"
 
-using android::sp;
-using android::hardware::boot::V1_0::IBootControl;
-using android::hardware::boot::V1_0::BoolResult;
-using android::hardware::boot::V1_0::CommandResult;
-
 // TODO(xunchang) remove the prefix and use a default path instead.
 constexpr const char* kDefaultCareMapPrefix = "/data/ota_package/care_map";
 
@@ -91,7 +87,7 @@
 // partition's integrity.
 std::map<std::string, std::string> UpdateVerifier::FindDmPartitions() {
   static constexpr auto DM_PATH_PREFIX = "/sys/block/";
-  dirent** namelist;
+  dirent** namelist = nullptr;
   int n = scandir(DM_PATH_PREFIX, &namelist, dm_name_filter, alphasort);
   if (n == -1) {
     PLOG(ERROR) << "Failed to scan dir " << DM_PATH_PREFIX;
@@ -188,7 +184,28 @@
   return ret;
 }
 
+bool UpdateVerifier::CheckVerificationStatus() {
+  auto client =
+      android::snapshot::SnapuserdClient::Connect(android::snapshot::kSnapuserdSocket, 5s);
+  if (!client) {
+    LOG(ERROR) << "Unable to connect to snapuserd";
+    return false;
+  }
+
+  return client->QueryUpdateVerification();
+}
+
 bool UpdateVerifier::VerifyPartitions() {
+  const bool userspace_snapshots =
+      android::base::GetBoolProperty("ro.virtual_ab.userspace.snapshots.enabled", false);
+
+  if (userspace_snapshots && CheckVerificationStatus()) {
+    LOG(INFO) << "Partitions verified by snapuserd daemon";
+    return true;
+  }
+
+  LOG(INFO) << "Partitions not verified by snapuserd daemon";
+
   auto dm_block_devices = FindDmPartitions();
   if (dm_block_devices.empty()) {
     LOG(ERROR) << "No dm-enabled block device is found.";
@@ -307,18 +324,21 @@
     LOG(INFO) << "Started with arg " << i << ": " << argv[i];
   }
 
-  sp<IBootControl> module = IBootControl::getService();
+  const auto module = android::hal::BootControlClient::WaitForService();
   if (module == nullptr) {
     LOG(ERROR) << "Error getting bootctrl module.";
     return reboot_device();
   }
 
-  uint32_t current_slot = module->getCurrentSlot();
-  BoolResult is_successful = module->isSlotMarkedSuccessful(current_slot);
-  LOG(INFO) << "Booting slot " << current_slot << ": isSlotMarkedSuccessful="
-            << static_cast<int32_t>(is_successful);
-
-  if (is_successful == BoolResult::FALSE) {
+  uint32_t current_slot = module->GetCurrentSlot();
+  const auto is_successful = module->IsSlotMarkedSuccessful(current_slot);
+  if (!is_successful.has_value()) {
+    LOG(INFO) << "Booting slot " << current_slot << " failed";
+  } else {
+    LOG(INFO) << "Booting slot " << current_slot
+              << ": isSlotMarkedSuccessful=" << is_successful.value();
+  }
+  if (is_successful.has_value() && !is_successful.value()) {
     // The current slot has not booted successfully.
 
     bool skip_verification = false;
@@ -364,8 +384,7 @@
     }
 
     if (!supports_checkpoint) {
-      CommandResult cr;
-      module->markBootSuccessful([&cr](CommandResult result) { cr = result; });
+      const auto cr = module->MarkBootSuccessful();
       if (!cr.success) {
         LOG(ERROR) << "Error marking booted successfully: " << cr.errMsg;
         return reboot_device();