diff --git a/core/Makefile b/core/Makefile
index e0d0234..0e205f6 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -78,8 +78,13 @@
 endif
 
 # -----------------------------------------------------------------
-# default.prop
+# prop.default
+ifdef property_overrides_split_enabled
+INSTALLED_DEFAULT_PROP_TARGET := $(TARGET_OUT)/etc/prop.default
+else
+# legacy path
 INSTALLED_DEFAULT_PROP_TARGET := $(TARGET_ROOT_OUT)/default.prop
+endif
 ALL_DEFAULT_INSTALLED_MODULES += $(INSTALLED_DEFAULT_PROP_TARGET)
 FINAL_DEFAULT_PROPERTIES := \
     $(call collapse-pairs, $(ADDITIONAL_DEFAULT_PROPERTIES))
@@ -95,6 +100,7 @@
 $(INSTALLED_DEFAULT_PROP_TARGET): $(intermediate_system_build_prop)
 	@echo Target buildinfo: $@
 	@mkdir -p $(dir $@)
+	@rm -f $@
 	$(hide) echo "#" > $@; \
 	        echo "# ADDITIONAL_DEFAULT_PROPERTIES" >> $@; \
 	        echo "#" >> $@;
@@ -107,6 +113,10 @@
 	$(hide) echo ro.bootimage.build.date.utc=`$(DATE_FROM_FILE) +%s`>>$@
 	$(hide) echo ro.bootimage.build.fingerprint="$(BUILD_FINGERPRINT_FROM_FILE)">>$@
 	$(hide) build/tools/post_process_props.py $@
+ifdef property_overrides_split_enabled
+	$(hide) mkdir -p $(TARGET_ROOT_OUT)
+	$(hide) ln -sf system/etc/prop.default $(TARGET_ROOT_OUT)/default.prop
+endif
 
 # -----------------------------------------------------------------
 # vendor default.prop
@@ -947,10 +957,6 @@
 
 INTERNAL_USERIMAGES_DEPS += $(BLK_ALLOC_TO_BASE_FS)
 
-INTERNAL_USERIMAGES_DEPS += \
-    $(ALL_MODULES.fs_config_dirs.INSTALLED) \
-    $(ALL_MODULES.fs_config_files.INSTALLED) \
-
 ifeq ($(INTERNAL_USERIMAGES_USE_EXT),true)
 INTERNAL_USERIMAGES_DEPS += $(MKE2FS_CONF)
 endif
@@ -1204,12 +1210,13 @@
     $(hide) cp -f $(recovery_wipe) $(TARGET_RECOVERY_ROOT_OUT)/etc/recovery.wipe)
   $(hide) cp $(RECOVERY_INSTALL_OTA_KEYS) $(TARGET_RECOVERY_ROOT_OUT)/res/keys
   $(hide) cat $(INSTALLED_DEFAULT_PROP_TARGET) \
-          > $(TARGET_RECOVERY_ROOT_OUT)/default.prop
+          > $(TARGET_RECOVERY_ROOT_OUT)/prop.default
   $(if $(INSTALLED_VENDOR_DEFAULT_PROP_TARGET), \
     $(hide) cat $(INSTALLED_VENDOR_DEFAULT_PROP_TARGET) \
-            >> $(TARGET_RECOVERY_ROOT_OUT)/default.prop)
+            >> $(TARGET_RECOVERY_ROOT_OUT)/prop.default)
   $(hide) cat $(recovery_build_props) \
-          >> $(TARGET_RECOVERY_ROOT_OUT)/default.prop
+          >> $(TARGET_RECOVERY_ROOT_OUT)/prop.default
+  $(hide) ln -sf prop.default $(TARGET_RECOVERY_ROOT_OUT)/default.prop
   $(BOARD_RECOVERY_IMAGE_PREPARE)
   $(if $(filter true,$(BOARD_BUILD_SYSTEM_ROOT_IMAGE)), \
     $(hide) mkdir -p $(TARGET_RECOVERY_ROOT_OUT)/system_root; \
@@ -2515,7 +2522,7 @@
 ifeq ($(PRODUCT_FULL_TREBLE),true)
 	@# Metadata for compatibility verification.
 	$(hide) cp $(BUILT_SYSTEM_MANIFEST) $(zip_root)/META/system_manifest.xml
-	$(hide) cp $(BUILT_SYSTEM_COMPATIBILITY_MATRIX) $(zip_root)/META/system_compatibility_matrix.xml
+	$(hide) cp $(BUILT_SYSTEM_COMPATIBILITY_MATRIX) $(zip_root)/META/system_matrix.xml
 ifdef BUILT_VENDOR_MANIFEST
 	$(hide) cp $(BUILT_VENDOR_MANIFEST) $(zip_root)/META/vendor_manifest.xml
 endif
diff --git a/core/build_id.mk b/core/build_id.mk
index 0690c04..00272aa 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-export BUILD_ID=OC
+export BUILD_ID=OC-DR1
diff --git a/core/config.mk b/core/config.mk
index 65601bf..f7a1d3d 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -721,7 +721,38 @@
 endif
 
 FRAMEWORK_MANIFEST_FILE := system/libhidl/manifest.xml
-FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.xml
+
+# Compatibility matrix versioning:
+# MATRIX_LEVEL_OVERRIDE defined: MATRIX_LEVEL = MATRIX_LEVEL_OVERRIDE
+# MATRIX_LEVEL_OVERRIDE undefined:
+#   FULL_TREBLE != true: MATRIX_LEVEL = legacy
+#   FULL_TREBLE == true:
+#     SHIPPING_API_LEVEL defined: MATRIX_LEVEL = SHIPPING_API_LEVEL
+#     SHIPPING_API_LEVEL undefined: MATRIX_LEVEL = PLATFORM_SDK_VERSION
+# MATRIX_LEVEL == legacy => legacy.xml
+# MATRIX_LEVEL <= 26 => 26.xml
+# MATRIX_LEVEL == 27 => 27.xml # define when 27 releases
+# MATRIX_LEVEL == 28 => 28.xml # define when 28 releases
+# ...
+# otherwise => current.xml
+
+ifneq ($(PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE),)
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := $(PRODUCT_COMPATIBILITY_MATRIX_LEVEL_OVERRIDE)
+else ifneq ($(PRODUCT_FULL_TREBLE),true)
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := legacy
+else ifneq ($(PRODUCT_SHIPPING_API_LEVEL),)
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := $(PRODUCT_SHIPPING_API_LEVEL)
+else
+  PRODUCT_COMPATIBILITY_MATRIX_LEVEL := $(PLATFORM_SDK_VERSION)
+endif
+
+ifeq ($(strip $(PRODUCT_COMPATIBILITY_MATRIX_LEVEL)),legacy)
+  FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.legacy.xml
+else ifeq ($(call math_gt_or_eq,$(PRODUCT_COMPATIBILITY_MATRIX_LEVEL),27),)
+  FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.26.xml
+else
+  FRAMEWORK_COMPATIBILITY_MATRIX_FILE := hardware/interfaces/compatibility_matrix.current.xml
+endif
 
 # ###############################################################
 # Set up final options.
diff --git a/core/main.mk b/core/main.mk
index 81bfae2..3894bd5 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -204,11 +204,16 @@
 
 #
 # -----------------------------------------------------------------
-# Enable dynamic linker developer warnings for all builds except
-# final release.
+# Enable dynamic linker developer warnings for userdebug, eng
+# and non-REL builds
+ifneq ($(TARGET_BUILD_VARIANT),user)
+  ADDITIONAL_BUILD_PROPERTIES += ro.bionic.ld.warning=1
+else
+# Enable it for user builds as long as they are not final.
 ifneq ($(PLATFORM_VERSION_CODENAME),REL)
   ADDITIONAL_BUILD_PROPERTIES += ro.bionic.ld.warning=1
 endif
+endif
 
 ADDITIONAL_BUILD_PROPERTIES += ro.treble.enabled=${PRODUCT_FULL_TREBLE}
 
diff --git a/core/pathmap.mk b/core/pathmap.mk
index e2331c6..a1c20c9 100644
--- a/core/pathmap.mk
+++ b/core/pathmap.mk
@@ -40,7 +40,6 @@
     libhardware:hardware/libhardware/include \
     libhardware_legacy:hardware/libhardware_legacy/include \
     libril:hardware/ril/include \
-    opengl-tests-includes:frameworks/native/opengl/tests/include \
     recovery:bootable/recovery \
     system-core:system/core/include \
     audio:system/media/audio/include \
diff --git a/core/sdk_font.mk b/core/sdk_font.mk
index c10f19f..0259a9c 100644
--- a/core/sdk_font.mk
+++ b/core/sdk_font.mk
@@ -8,7 +8,7 @@
 
 
 # The script that renames the font.
-sdk_font_rename_script := frameworks/base/tools/layoutlib/rename_font/build_font_single.py
+sdk_font_rename_script := frameworks/layoutlib/rename_font/build_font_single.py
 
 # Location of the fonttools library that the above script depends on.
 fonttools_lib := external/fonttools/Lib
diff --git a/core/static_java_library.mk b/core/static_java_library.mk
index 9fcf194..2b173da 100644
--- a/core/static_java_library.mk
+++ b/core/static_java_library.mk
@@ -187,9 +187,9 @@
 
 # if we have custom proguarding done use the proguarded classes jar instead of the normal classes jar
 ifeq ($(filter custom,$(LOCAL_PROGUARD_ENABLED)),custom)
-aar_classes_jar = $(full_classes_proguard_jar)
-else
 aar_classes_jar = $(full_classes_jar)
+else
+aar_classes_jar = $(full_classes_pre_proguard_jar)
 endif
 
 # Rule to build AAR, archive including classes.jar, resource, etc.
diff --git a/core/tasks/check_boot_jars/check_boot_jars.py b/core/tasks/check_boot_jars/check_boot_jars.py
index 5a0ec40..1b4540c 100755
--- a/core/tasks/check_boot_jars/check_boot_jars.py
+++ b/core/tasks/check_boot_jars/check_boot_jars.py
@@ -55,7 +55,7 @@
       package_name = package_name.replace('/', '.')
       # Skip class without a package name
       if package_name and not whitelist_re.match(package_name):
-        print >> sys.stderr, ('Error: %s: unknown package name of class file %s'
+        print >> sys.stderr, ('Error: %s contains class file %s, which is not in the whitelist'
                               % (jar, f))
         return False
   return True
diff --git a/core/tasks/check_boot_jars/package_whitelist.txt b/core/tasks/check_boot_jars/package_whitelist.txt
index 1889117..15b9990 100644
--- a/core/tasks/check_boot_jars/package_whitelist.txt
+++ b/core/tasks/check_boot_jars/package_whitelist.txt
@@ -202,12 +202,6 @@
 
 android
 
-
-###################################################
-# telephony-common.jar
-com\.google\..*
-
-
 ###################################################
 # apache-xml.jar
 org\.apache\.xml\.res
@@ -238,3 +232,8 @@
 org\.apache\.xalan\.processor
 org\.apache\.xalan\.transformer
 org\.apache\.xalan\.xslt
+
+###################################################
+# Packages in the google namespace across all bootclasspath jars.
+com\.google\.android\..*
+com\.google\.vr\.platform.*
diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 3ca35c0..26d4c03 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -38,8 +38,8 @@
   include $(INTERNAL_BUILD_ID_MAKEFILE)
 endif
 
-DEFAULT_PLATFORM_VERSION := OPR1
-MIN_PLATFORM_VERSION := OPR1
+DEFAULT_PLATFORM_VERSION := OPD1
+MIN_PLATFORM_VERSION := OPD1
 MAX_PLATFORM_VERSION := PPR1
 
 ALLOWED_VERSIONS := $(call allowed-platform-versions,\
@@ -79,12 +79,14 @@
 # When you change PLATFORM_VERSION for a given PLATFORM_SDK_VERSION
 # please add that PLATFORM_VERSION to the following text file:
 # cts/tests/tests/os/assets/platform_versions.txt
-PLATFORM_VERSION.OPR1 := 8.0.0
+PLATFORM_VERSION.OPD1 := 8.0.1
+PLATFORM_VERSION.OPM1 := OMR1
 PLATFORM_VERSION.PPR1 := P
 
-# This is the current development code-name, if the build is not a final
+# These are the current development codenames, if the build is not a final
 # release build.  If this is a final release build, it is simply "REL".
-PLATFORM_VERSION_CODENAME.OPR1 := REL
+PLATFORM_VERSION_CODENAME.OPD1 := REL
+PLATFORM_VERSION_CODENAME.OPM1 := OMR1
 PLATFORM_VERSION_CODENAME.PPR1 := P
 
 ifndef PLATFORM_VERSION
@@ -182,7 +184,7 @@
     # assuming the device can only support APIs as of the previous official
     # public release.
     # This value will always be 0 for release builds.
-    PLATFORM_PREVIEW_SDK_VERSION := 0
+    PLATFORM_PREVIEW_SDK_VERSION := 1
   endif
 endif
 
@@ -205,7 +207,7 @@
     #  It must be of the form "YYYY-MM-DD" on production devices.
     #  It must match one of the Android Security Patch Level strings of the Public Security Bulletins.
     #  If there is no $PLATFORM_SECURITY_PATCH set, keep it empty.
-      PLATFORM_SECURITY_PATCH := 2017-08-05
+      PLATFORM_SECURITY_PATCH := 2017-10-05
 endif
 
 ifndef PLATFORM_BASE_OS
diff --git a/envsetup.sh b/envsetup.sh
index a8bef92..3f718bd 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -231,6 +231,16 @@
     fi
 
     export ANDROID_DEV_SCRIPTS=$T/development/scripts:$T/prebuilts/devtools/tools:$T/external/selinux/prebuilts/bin
+
+    # add kernel specific binaries
+    case $(uname -s) in
+        Linux)
+            export ANDROID_DEV_SCRIPTS=$ANDROID_DEV_SCRIPTS:$T/prebuilts/misc/linux-x86/dtc:$T/prebuilts/misc/linux-x86/libufdt
+            ;;
+        *)
+            ;;
+    esac
+
     export ANDROID_BUILD_PATHS=$(get_build_var ANDROID_BUILD_PATHS):$ANDROID_TOOLCHAIN:$ANDROID_TOOLCHAIN_2ND_ARCH:$ANDROID_DEV_SCRIPTS:
 
     # If prebuilts/android-emulator/<system>/ exists, prepend it to our PATH
diff --git a/target/board/generic/BoardConfig.mk b/target/board/generic/BoardConfig.mk
index 6267031..609cf25 100644
--- a/target/board/generic/BoardConfig.mk
+++ b/target/board/generic/BoardConfig.mk
@@ -39,6 +39,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation guest and host libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/board/generic/sepolicy/file_contexts b/target/board/generic/sepolicy/file_contexts
index e9502d9..d1a1e8c 100644
--- a/target/board/generic/sepolicy/file_contexts
+++ b/target/board/generic/sepolicy/file_contexts
@@ -17,4 +17,6 @@
 /system/bin/qemud            u:object_r:qemud_exec:s0
 /sys/qemu_trace(/.*)?        u:object_r:sysfs_writable:s0
 /system/etc/init.goldfish.sh u:object_r:goldfish_setup_exec:s0
+/system/vendor/bin/init.ranchu-core.sh u:object_r:goldfish_setup_exec:s0
+/system/vendor/bin/init.ranchu-net.sh u:object_r:goldfish_setup_exec:s0
 /system/bin/qemu-props       u:object_r:qemu_props_exec:s0
diff --git a/target/board/generic/sepolicy/hal_gnss_default.te b/target/board/generic/sepolicy/hal_gnss_default.te
new file mode 100644
index 0000000..0dd3d03
--- /dev/null
+++ b/target/board/generic/sepolicy/hal_gnss_default.te
@@ -0,0 +1,3 @@
+#============= hal_gnss_default ==============
+allow hal_gnss_default vndbinder_device:chr_file { ioctl open read write };
+
diff --git a/target/board/generic/sepolicy/hal_graphics_composer_default.te b/target/board/generic/sepolicy/hal_graphics_composer_default.te
new file mode 100644
index 0000000..034bdef
--- /dev/null
+++ b/target/board/generic/sepolicy/hal_graphics_composer_default.te
@@ -0,0 +1,3 @@
+#============= hal_graphics_composer_default ==============
+allow hal_graphics_composer_default vndbinder_device:chr_file { ioctl open read write };
+
diff --git a/target/board/generic_arm64/BoardConfig.mk b/target/board/generic_arm64/BoardConfig.mk
index e6d741a..d11f914 100644
--- a/target/board/generic_arm64/BoardConfig.mk
+++ b/target/board/generic_arm64/BoardConfig.mk
@@ -70,6 +70,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation host and guest libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/board/generic_arm64_ab/BoardConfig.mk b/target/board/generic_arm64_ab/BoardConfig.mk
index cf79019..e05f345 100644
--- a/target/board/generic_arm64_ab/BoardConfig.mk
+++ b/target/board/generic_arm64_ab/BoardConfig.mk
@@ -46,6 +46,7 @@
 
 # Generic AOSP image does NOT support HWC1
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 TARGET_ARCH := arm64
 TARGET_ARCH_VARIANT := armv8-a
diff --git a/target/board/generic_mips/BoardConfig.mk b/target/board/generic_mips/BoardConfig.mk
index be98998..cd29f35 100644
--- a/target/board/generic_mips/BoardConfig.mk
+++ b/target/board/generic_mips/BoardConfig.mk
@@ -47,6 +47,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation guest and host libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/board/generic_mips64/BoardConfig.mk b/target/board/generic_mips64/BoardConfig.mk
index 7f35c8b..17aae27 100644
--- a/target/board/generic_mips64/BoardConfig.mk
+++ b/target/board/generic_mips64/BoardConfig.mk
@@ -62,6 +62,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation guest and host libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/board/generic_x86/BoardConfig.mk b/target/board/generic_x86/BoardConfig.mk
index fef2304..08bd6d1 100644
--- a/target/board/generic_x86/BoardConfig.mk
+++ b/target/board/generic_x86/BoardConfig.mk
@@ -26,6 +26,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation host and guest libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/board/generic_x86_64/BoardConfig.mk b/target/board/generic_x86_64/BoardConfig.mk
index 6e16f35..2499199 100755
--- a/target/board/generic_x86_64/BoardConfig.mk
+++ b/target/board/generic_x86_64/BoardConfig.mk
@@ -32,6 +32,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation host and guest libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/board/generic_x86_arm/BoardConfig.mk b/target/board/generic_x86_arm/BoardConfig.mk
index 4a2e159..4555f1f 100644
--- a/target/board/generic_x86_arm/BoardConfig.mk
+++ b/target/board/generic_x86_arm/BoardConfig.mk
@@ -44,6 +44,7 @@
 endif
 
 TARGET_USES_HWC2 := true
+NUM_FRAMEBUFFER_SURFACE_BUFFERS := 3
 
 # Build OpenGLES emulation host and guest libraries
 BUILD_EMULATOR_OPENGL := true
diff --git a/target/product/aosp_arm64_a.mk b/target/product/aosp_arm64_a.mk
index 535b3a4..4258f04 100644
--- a/target/product/aosp_arm64_a.mk
+++ b/target/product/aosp_arm64_a.mk
@@ -23,7 +23,6 @@
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/verity.mk)
 
 PRODUCT_NAME := aosp_arm64_a
 PRODUCT_DEVICE := generic_arm64_a
diff --git a/target/product/aosp_arm64_ab.mk b/target/product/aosp_arm64_ab.mk
index fe3afb7..ae50c42 100644
--- a/target/product/aosp_arm64_ab.mk
+++ b/target/product/aosp_arm64_ab.mk
@@ -29,7 +29,6 @@
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_64_bit.mk)
 $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/verity.mk)
 
 PRODUCT_NAME := aosp_arm64_ab
 PRODUCT_DEVICE := generic_arm64_ab
diff --git a/target/product/aosp_arm_a.mk b/target/product/aosp_arm_a.mk
index c3188e0..6be8e82 100644
--- a/target/product/aosp_arm_a.mk
+++ b/target/product/aosp_arm_a.mk
@@ -22,7 +22,6 @@
 include build/make/target/product/treble_common.mk
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/aosp_base_telephony.mk)
-$(call inherit-product, $(SRC_TARGET_DIR)/product/verity.mk)
 
 PRODUCT_NAME := aosp_arm_a
 PRODUCT_DEVICE := generic_arm_a
diff --git a/target/product/core_base.mk b/target/product/core_base.mk
index 03d33e1..151e8de 100644
--- a/target/product/core_base.mk
+++ b/target/product/core_base.mk
@@ -43,6 +43,7 @@
     libstagefright_soft_amrwbenc \
     libstagefright_soft_avcdec \
     libstagefright_soft_avcenc \
+    libstagefright_soft_flacdec \
     libstagefright_soft_flacenc \
     libstagefright_soft_g711dec \
     libstagefright_soft_gsmdec \
@@ -60,6 +61,10 @@
     libwebrtc_audio_preprocessing \
     mdnsd \
     requestsync \
-    wifi-service
+
+# Wifi modules
+PRODUCT_PACKAGES += \
+    wifi-service \
+    wificond \
 
 $(call inherit-product, $(SRC_TARGET_DIR)/product/core_minimal.mk)
diff --git a/target/product/core_minimal.mk b/target/product/core_minimal.mk
index a9a288a..7167160 100644
--- a/target/product/core_minimal.mk
+++ b/target/product/core_minimal.mk
@@ -88,7 +88,11 @@
     voip-common \
     webview \
     webview_zygote \
-    wifi-service
+
+# Wifi modules
+PRODUCT_PACKAGES += \
+    wifi-service \
+    wificond \
 
 PRODUCT_COPY_FILES += \
     frameworks/native/data/etc/android.software.webview.xml:system/etc/permissions/android.software.webview.xml
diff --git a/target/product/core_tiny.mk b/target/product/core_tiny.mk
index 5ced1a6..e473413 100644
--- a/target/product/core_tiny.mk
+++ b/target/product/core_tiny.mk
@@ -83,7 +83,11 @@
     telephony-common \
     voip-common \
     logd \
-    wifi-service
+
+# Wifi modules
+PRODUCT_PACKAGES += \
+    wifi-service \
+    wificond \
 
 ifeq ($(TARGET_CORE_JARS),)
 $(error TARGET_CORE_JARS is empty; cannot initialize PRODUCT_BOOT_JARS variable)
diff --git a/target/product/embedded.mk b/target/product/embedded.mk
index 349abd4..3466d1a 100644
--- a/target/product/embedded.mk
+++ b/target/product/embedded.mk
@@ -20,7 +20,7 @@
 PRODUCT_PACKAGES += \
     adb \
     adbd \
-    android.hardware.configstore@1.0-service \
+    android.hardware.configstore@1.1-service \
     android.hidl.allocator@1.0-service \
     android.hidl.memory@1.0-impl \
     atrace \
diff --git a/target/product/emulator.mk b/target/product/emulator.mk
index 04aae58..5a5fb8e 100644
--- a/target/product/emulator.mk
+++ b/target/product/emulator.mk
@@ -56,8 +56,14 @@
     android.hardware.biometrics.fingerprint@2.1-service \
     sensors.ranchu \
     android.hardware.graphics.composer@2.1-impl \
-	hwcomposer.goldfish \
-	hwcomposer.ranchu \
+    android.hardware.graphics.composer@2.1-service \
+    android.hardware.graphics.allocator@2.0-service \
+    android.hardware.graphics.allocator@2.0-impl \
+    android.hardware.graphics.mapper@2.0-impl \
+    hwcomposer.goldfish \
+    hwcomposer.ranchu \
+    vintf \
+    CarrierConfig
 
 PRODUCT_PACKAGES += \
     android.hardware.audio@2.0-impl \
@@ -89,10 +95,14 @@
     device/generic/goldfish/fstab.goldfish:root/fstab.goldfish \
     device/generic/goldfish/init.goldfish.rc:root/init.goldfish.rc \
     device/generic/goldfish/init.goldfish.sh:system/etc/init.goldfish.sh \
+    device/generic/goldfish/init.ranchu-core.sh:$(TARGET_COPY_OUT_VENDOR)/bin/init.ranchu-core.sh \
+    device/generic/goldfish/init.ranchu-net.sh:$(TARGET_COPY_OUT_VENDOR)/bin/init.ranchu-net.sh \
+    device/generic/goldfish/init.ranchu.rc:root/init.ranchu.rc \
     device/generic/goldfish/ueventd.goldfish.rc:root/ueventd.goldfish.rc \
     device/generic/goldfish/init.ranchu.rc:root/init.ranchu.rc \
     device/generic/goldfish/fstab.ranchu:root/fstab.ranchu \
     device/generic/goldfish/ueventd.ranchu.rc:root/ueventd.ranchu.rc \
+    device/generic/goldfish/manifest.xml:$(TARGET_COPY_OUT_VENDOR)/manifest.xml \
     device/generic/goldfish/input/goldfish_rotary.idc:system/usr/idc/goldfish_rotary.idc \
     frameworks/native/data/etc/android.hardware.usb.accessory.xml:system/etc/permissions/android.hardware.usb.accessory.xml
 
diff --git a/target/product/generic_no_telephony.mk b/target/product/generic_no_telephony.mk
index 52819d2..190a889 100644
--- a/target/product/generic_no_telephony.mk
+++ b/target/product/generic_no_telephony.mk
@@ -28,6 +28,7 @@
     OneTimeInitializer \
     Provision \
     SystemUI \
+    SysuiDarkThemeOverlay \
     EasterEgg \
     WallpaperCropper
 
diff --git a/target/product/sdk_base.mk b/target/product/sdk_base.mk
index 0cdb05d..0b14203 100644
--- a/target/product/sdk_base.mk
+++ b/target/product/sdk_base.mk
@@ -46,6 +46,7 @@
 	SoftKeyboard \
 	sqlite3 \
 	SystemUI \
+	SysuiDarkThemeOverlay \
 	EasterEgg \
 	WallpaperPicker \
 	WidgetPreview
diff --git a/target/product/treble_common.mk b/target/product/treble_common.mk
index 76ee015..89b09cf 100644
--- a/target/product/treble_common.mk
+++ b/target/product/treble_common.mk
@@ -72,6 +72,8 @@
     android.hardware.radio.deprecated@1.0 \
     android.hardware.sensors@1.0 \
     android.hardware.soundtrigger@2.0 \
+    android.hardware.tetheroffload.config@1.0 \
+    android.hardware.tetheroffload.control@1.0 \
     android.hardware.thermal@1.0 \
     android.hardware.tv.cec@1.0 \
     android.hardware.tv.input@1.0 \
@@ -81,11 +83,13 @@
     android.hardware.vr@1.0 \
     android.hardware.weaver@1.0 \
     android.hardware.wifi@1.0 \
+    android.hardware.wifi@1.1 \
     android.hardware.wifi.supplicant@1.0 \
     android.hidl.allocator@1.0 \
     android.hidl.manager@1.0 \
     android.hidl.memory@1.0 \
     android.hidl.token@1.0 \
+    android.system.net.netd@1.0 \
     android.system.wifi.keystore@1.0 \
 
 # VNDK:
@@ -166,7 +170,7 @@
 PRODUCT_PACKAGES += \
     vndk-sp \
 
-# LL-VNDK:
+# LL-NDK:
 PRODUCT_PACKAGES += \
     libandroid_net \
     libc \
@@ -187,14 +191,6 @@
     libsync \
     libvulkan \
 
-PRODUCT_SYSTEM_VERITY_PARTITION := /dev/block/bootdevice/by-name/system
-
-# Wifi:
-#   Wifi HAL (android.hardware.wifi@1.0-service, wpa_supplicant,
-#   and wpa_supplicant.conf) is not here. They are in vendor.img
-PRODUCT_PACKAGES += \
-    wificond \
-
 # Audio:
 USE_XML_AUDIO_POLICY_CONF := 1
 # The following policy XML files are used as fallback for
@@ -211,8 +207,3 @@
 #   audio.a2dp.default to support A2DP if board has the capability.
 PRODUCT_PACKAGES += \
     audio.a2dp.default
-
-# May need to review why the followings are needed in generic system image.
-PRODUCT_COPY_FILES += \
-    device/generic/goldfish/data/etc/apns-conf.xml:system/etc/apns-conf.xml
-
diff --git a/tools/post_process_props.py b/tools/post_process_props.py
index 83c6f9a..9355e4b 100755
--- a/tools/post_process_props.py
+++ b/tools/post_process_props.py
@@ -35,7 +35,7 @@
 def mangle_default_prop_override(prop):
   pass
 
-# Put the modifications that you need to make into the /default.prop into this
+# Put the modifications that you need to make into the /system/etc/prop.default into this
 # function. The prop object has get(name) and put(name,value) methods.
 def mangle_default_prop(prop):
   # If ro.debuggable is 1, then enable adb on USB by default
@@ -122,7 +122,8 @@
   elif (filename.endswith("/vendor/default.prop") or
         filename.endswith("/odm/default.prop")):
     mangle_default_prop_override(properties)
-  elif filename.endswith("/default.prop"):
+  elif (filename.endswith("/default.prop") or # legacy
+        filename.endswith("/prop.default")):
     mangle_default_prop(properties)
   else:
     sys.stderr.write("bad command line: " + str(argv) + "\n")
diff --git a/tools/releasetools/sign_target_files_apks.py b/tools/releasetools/sign_target_files_apks.py
index a76c9c9..58bf489 100755
--- a/tools/releasetools/sign_target_files_apks.py
+++ b/tools/releasetools/sign_target_files_apks.py
@@ -102,6 +102,7 @@
 import errno
 import os
 import re
+import stat
 import subprocess
 import tempfile
 import zipfile
@@ -225,11 +226,17 @@
     # System properties.
     elif info.filename in ("SYSTEM/build.prop",
                            "VENDOR/build.prop",
-                           "BOOT/RAMDISK/default.prop",
-                           "ROOT/default.prop",
-                           "RECOVERY/RAMDISK/default.prop"):
+                           "SYSTEM/etc/prop.default",
+                           "BOOT/RAMDISK/prop.default",
+                           "BOOT/RAMDISK/default.prop",  # legacy
+                           "ROOT/default.prop",  # legacy
+                           "RECOVERY/RAMDISK/prop.default",
+                           "RECOVERY/RAMDISK/default.prop"):  # legacy
       print "rewriting %s:" % (info.filename,)
-      new_data = RewriteProps(data, misc_info)
+      if stat.S_ISLNK(info.external_attr >> 16):
+        new_data = data
+      else:
+        new_data = RewriteProps(data, misc_info)
       common.ZipWriteStr(output_tf_zip, out_info, new_data)
 
     elif info.filename.endswith("mac_permissions.xml"):