diff --git a/common/prebuild/preinstallapk/ESFileExplorer/Android.mk b/common/prebuild/preinstallapk/ESFileExplorer/Android.mk
deleted file mode 100755
index af82745..0000000
--- a/common/prebuild/preinstallapk/ESFileExplorer/Android.mk
+++ /dev/null
@@ -1,11 +0,0 @@
-###############################################################################
-# ESFileExplorer
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := ESFileExplorer
-LOCAL_MODULE_TAGS := optional
-LOCAL_CERTIFICATE := PRESIGNED
-LOCAL_MODULE_CLASS := APPS
-LOCAL_SRC_FILES := ES_File_Explorer_3.2.5.1.apk
-include $(BUILD_PREBUILT)
diff --git a/common/prebuild/preinstallapk/ESFileExplorer/ES_File_Explorer_3.2.5.1.apk b/common/prebuild/preinstallapk/ESFileExplorer/ES_File_Explorer_3.2.5.1.apk
deleted file mode 100755
index 92b5661..0000000
Binary files a/common/prebuild/preinstallapk/ESFileExplorer/ES_File_Explorer_3.2.5.1.apk and /dev/null differ
diff --git a/common/prebuild/preinstallapk/SideloadLauncher/Android.mk b/common/prebuild/preinstallapk/SideloadLauncher/Android.mk
deleted file mode 100644
index 020d6e6..0000000
--- a/common/prebuild/preinstallapk/SideloadLauncher/Android.mk
+++ /dev/null
@@ -1,9 +0,0 @@
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := SideloadLauncher
-LOCAL_MODULE_TAGS := optional
-LOCAL_CERTIFICATE := PRESIGNED
-LOCAL_MODULE_CLASS := APPS
-LOCAL_SRC_FILES := SideloadLauncher.apk
-include $(BUILD_PREBUILT)
diff --git a/common/prebuild/preinstallapk/SideloadLauncher/SideloadLauncher.apk b/common/prebuild/preinstallapk/SideloadLauncher/SideloadLauncher.apk
deleted file mode 100644
index 015f6a9..0000000
Binary files a/common/prebuild/preinstallapk/SideloadLauncher/SideloadLauncher.apk and /dev/null differ
diff --git a/common/prebuild/preinstallapk/WIFIADB/Android.mk b/common/prebuild/preinstallapk/WIFIADB/Android.mk
deleted file mode 100644
index 761ab2a..0000000
--- a/common/prebuild/preinstallapk/WIFIADB/Android.mk
+++ /dev/null
@@ -1,9 +0,0 @@
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := WIFIADB
-LOCAL_MODULE_TAGS := optional
-LOCAL_CERTIFICATE := PRESIGNED
-LOCAL_MODULE_CLASS := APPS
-LOCAL_SRC_FILES := wifi_adb_1.49.apk
-include $(BUILD_PREBUILT)
diff --git a/common/prebuild/preinstallapk/WIFIADB/wifi_adb_1.49.apk b/common/prebuild/preinstallapk/WIFIADB/wifi_adb_1.49.apk
deleted file mode 100755
index 9d50600..0000000
Binary files a/common/prebuild/preinstallapk/WIFIADB/wifi_adb_1.49.apk and /dev/null differ