diff --git a/build/sdk-android-arm64-v8a.atree b/build/sdk-android-arm64-v8a.atree
index e5e9f78..56fba15 100644
--- a/build/sdk-android-arm64-v8a.atree
+++ b/build/sdk-android-arm64-v8a.atree
@@ -14,7 +14,7 @@
 # limitations under the License.
 #
 
-prebuilts/qemu-kernel/${TARGET_ARCH}/3.18/kernel-qemu2 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/kernel-ranchu
+prebuilts/qemu-kernel/${TARGET_ARCH}/4.4/kernel-qemu2 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/kernel-ranchu
 
 # version files for the SDK updater, from development.git
 ${HOST_OUT}/development/sys-img-${TARGET_CPU_ABI}/images_arm64-v8a_source.properties system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/source.properties
diff --git a/build/sdk-android-armeabi-v7a.atree b/build/sdk-android-armeabi-v7a.atree
index d488c95..a05229c 100644
--- a/build/sdk-android-armeabi-v7a.atree
+++ b/build/sdk-android-armeabi-v7a.atree
@@ -15,7 +15,7 @@
 #
 
 # Copy the ARMv7 specific kernel image to .../kernel-qemu
-prebuilts/qemu-kernel/arm64/3.18/kernel-qemu2 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/kernel-ranchu-64
+prebuilts/qemu-kernel/arm64/4.4/kernel-qemu2 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/kernel-ranchu-64
 
 # version files for the SDK updater, from development.git
 ${HOST_OUT}/development/sys-img-${TARGET_CPU_ABI}/images_armeabi-v7a_source.properties system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/source.properties
diff --git a/build/sdk-android-armeabi.atree b/build/sdk-android-armeabi.atree
index 90afc82..293ea4c 100644
--- a/build/sdk-android-armeabi.atree
+++ b/build/sdk-android-armeabi.atree
@@ -15,7 +15,7 @@
 #
 
 prebuilts/qemu-kernel/${TARGET_ARCH}/kernel-qemu system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/kernel-qemu
-prebuilts/qemu-kernel/arm64/3.18/kernel-qemu2 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/kernel-ranchu-64
+prebuilts/qemu-kernel/arm64/4.4/kernel-qemu2 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/kernel-ranchu-64
 
 # version files for the SDK updater, from development.git
 ${HOST_OUT}/development/sys-img-${TARGET_CPU_ABI}/images_armeabi_source.properties system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/source.properties
diff --git a/build/sdk.atree b/build/sdk.atree
index ee7f864..24b997d 100644
--- a/build/sdk.atree
+++ b/build/sdk.atree
@@ -95,7 +95,8 @@
 external/clang/lib/Headers                    build-tools/${PLATFORM_NAME}/renderscript/clang-include
 external/clang/LICENSE.TXT                    build-tools/${PLATFORM_NAME}/renderscript/clang-include/LICENSE.TXT
 
-prebuilts/sdk/renderscript/lib/javalib.jar            build-tools/${PLATFORM_NAME}/renderscript/lib/renderscript-v8.jar
+prebuilts/sdk/renderscript/lib/javalib.jar            build-tools/${PLATFORM_NAME}/renderscript/lib/androidx-rs.jar
+prebuilts/sdk/renderscript/lib/javalib_legacy.jar     build-tools/${PLATFORM_NAME}/renderscript/lib/renderscript-v8.jar
 
 prebuilts/sdk/renderscript/lib/arm/libc.so            build-tools/${PLATFORM_NAME}/renderscript/lib/intermediates/armeabi-v7a/libc.so
 prebuilts/sdk/renderscript/lib/arm/libm.so            build-tools/${PLATFORM_NAME}/renderscript/lib/intermediates/armeabi-v7a/libm.so
@@ -241,6 +242,7 @@
 system-qemu.img                                 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/system.img
 vendor-qemu.img                                 system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/vendor.img
 ramdisk.img                                system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/ramdisk.img
+device/generic/goldfish/data/etc/userdata.img    system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/userdata.img
 data/misc                                        system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/data/misc
 system/build.prop                          system-images/${PLATFORM_NAME}/${TARGET_CPU_ABI}/build.prop
 
diff --git a/sys-img/images_arm64-v8a_source.prop_template b/sys-img/images_arm64-v8a_source.prop_template
index 4cd941e..c2c3851 100644
--- a/sys-img/images_arm64-v8a_source.prop_template
+++ b/sys-img/images_arm64-v8a_source.prop_template
@@ -1,6 +1,6 @@
 Pkg.Desc=Android SDK System Image
 Pkg.UserSrc=false
-Pkg.Revision=3
+Pkg.Revision=4
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}
 SystemImage.Abi=arm64-v8a
diff --git a/sys-img/images_armeabi-v7a_source.prop_template b/sys-img/images_armeabi-v7a_source.prop_template
index 2266679..6322547 100644
--- a/sys-img/images_armeabi-v7a_source.prop_template
+++ b/sys-img/images_armeabi-v7a_source.prop_template
@@ -1,6 +1,6 @@
 Pkg.Desc=Android SDK System Image
 Pkg.UserSrc=false
-Pkg.Revision=3
+Pkg.Revision=4
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}
 SystemImage.Abi=armeabi-v7a
diff --git a/sys-img/images_armeabi_source.prop_template b/sys-img/images_armeabi_source.prop_template
index c111286..ebfec29 100644
--- a/sys-img/images_armeabi_source.prop_template
+++ b/sys-img/images_armeabi_source.prop_template
@@ -1,6 +1,6 @@
 Pkg.Desc=Android SDK System Image
 Pkg.UserSrc=false
-Pkg.Revision=3
+Pkg.Revision=4
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}
 SystemImage.Abi=armeabi
diff --git a/sys-img/images_x86_64_source.prop_template b/sys-img/images_x86_64_source.prop_template
index 9574d5d..7f7af45 100644
--- a/sys-img/images_x86_64_source.prop_template
+++ b/sys-img/images_x86_64_source.prop_template
@@ -1,6 +1,6 @@
 Pkg.Desc=Android SDK System Image
 Pkg.UserSrc=false
-Pkg.Revision=3
+Pkg.Revision=4
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}
 SystemImage.Abi=x86_64
diff --git a/sys-img/images_x86_source.prop_template b/sys-img/images_x86_source.prop_template
index 6f701a2..ef470a0 100644
--- a/sys-img/images_x86_source.prop_template
+++ b/sys-img/images_x86_source.prop_template
@@ -1,6 +1,6 @@
 Pkg.Desc=Android SDK System Image
 Pkg.UserSrc=false
-Pkg.Revision=3
+Pkg.Revision=4
 AndroidVersion.ApiLevel=${PLATFORM_SDK_VERSION}
 AndroidVersion.CodeName=${PLATFORM_VERSION_CODENAME}
 SystemImage.Abi=x86