diff --git a/README.md b/README.md
index 1f7cf67..fef690e 100644
--- a/README.md
+++ b/README.md
@@ -90,6 +90,36 @@ Open terminal and switch to directory where "main.py" is located then run:
 
     sudo python3 main.py install smartdock
 
+## Granting full permission for apps data (HACK)
+
+
+This is a temporary hack to combat against the apps permission issue on Android 11. Whenever an app is open it will always enable a property (persist.sys.nodataperm) to make it execute a script to grant the data full permissions (777). The **correct** way is to use `sdcardfs` or `esdfs`, both need to recompile the kernel or WayDroid image.
+
+Arknights, PUNISHING: GRAY RAVEN and other games won't freeze on the black screen.
+
+![](assets/6.png)
+
+Open terminal and switch to directory where "main.py" is located then run:
+
+```
+sudo python3 main.py install nodataperm
+```
+**WARNING**: Only tested on `lineage-18.1-20230121-VANILLA-waydroid_x86_64`. This script will replace `/system/framework/service.jar`, which may prevent WayDroid from booting.
+
+
+Or you can run the following commands directly in `sudo waydroid shell`. In this way, every time a new game is installed, you need to run it again, but it's much less risky.
+
+```
+chmod 777 -R /sdcard/Android
+chmod 777 -R /data/media/0/Android 
+chmod 777 -R /sdcard/Android/data
+chmod 777 -R /data/media/0/Android/obb 
+chmod 777 -R /mnt/*/*/*/*/Android/data
+chmod 777 -R /mnt/*/*/*/*/Android/obb
+```
+
+- https://github.com/supremegamers/device_generic_common/commit/2d47891376c96011b2ee3c1ccef61cb48e15aed6  
+- https://github.com/supremegamers/android_frameworks_base/commit/24a08bf800b2e461356a9d67d04572bb10b0e819
 
 ## Get Android ID for device registration
 
diff --git a/assets/6.png b/assets/6.png
new file mode 100644
index 0000000..c32dc92
Binary files /dev/null and b/assets/6.png differ
diff --git a/main.py b/main.py
index 0b01148..4fef3d7 100755
--- a/main.py
+++ b/main.py
@@ -7,6 +7,7 @@ from stuffs.gapps import Gapps
 from stuffs.houdini import Houdini
 from stuffs.magisk import Magisk
 from stuffs.ndk import Ndk
+from stuffs.nodataperm import Nodataperm
 from stuffs.smartdock import Smartdock
 from stuffs.widevine import Widevine
 import tools.helper as helper
@@ -29,8 +30,10 @@ def install(*args):
         Magisk().install()
     if "widevine" in args:
         Widevine().install()
-    if "smartdock" in args :
+    if "smartdock" in args:
         Smartdock().install()
+    if "nodataperm" in args:
+        Nodataperm().install()
 
 def uninstall(*args):
     pass
@@ -57,7 +60,7 @@ def main():
         "dest": "app",
         "type": str,
         "nargs": '+',
-        "choices": ["gapps", "libndk","libhoudini","magisk", "smartdock","widevine"],
+        "choices": ["gapps", "libndk","libhoudini","magisk", "smartdock","widevine", "nodataperm"],
     }
 
     install_parser = subparsers.add_parser("install", help='install something')
diff --git a/stuffs/general.py b/stuffs/general.py
index 5de2895..244b5c5 100644
--- a/stuffs/general.py
+++ b/stuffs/general.py
@@ -103,12 +103,6 @@ class General:
     def extra2(self):
         pass
 
-    # def install(self):
-    #     if DBusContainerService().GetSession():
-    #         print("running")
-    #     else:
-    #         print("stopped")
-    #     run("waydroid session start".split())
     def install(self):
         if container.use_overlayfs():
             self.download()
diff --git a/stuffs/magisk.py b/stuffs/magisk.py
index 3750342..78735ae 100644
--- a/stuffs/magisk.py
+++ b/stuffs/magisk.py
@@ -5,6 +5,7 @@ import re
 from stuffs.general import General
 from tools.helper import download_file, host, run
 from tools.logger import Logger
+from tools import container
 
 class Magisk(General):
     partition = "system"
diff --git a/stuffs/nodataperm.py b/stuffs/nodataperm.py
new file mode 100644
index 0000000..87ed01b
--- /dev/null
+++ b/stuffs/nodataperm.py
@@ -0,0 +1,20 @@
+import os
+import shutil
+from stuffs.general import General
+from tools.helper import run
+from tools.logger import Logger
+
+class Nodataperm(General):
+    dl_link = "https://github.com/ayasa520/hack_full_data_permission/archive/refs/heads/main.zip"
+    dl_file_name = "nodataperm.zip"
+    extract_to = "/tmp/nodataperm"
+    act_md5 = "eafd7b0986f3edaebaf1dd89f19d49bf"
+    partition = "system"
+
+    def copy(self):
+        extract_path = os.path.join(self.extract_to, "hack_full_data_permission-main")
+        os.chmod(os.path.join(extract_path, "framework", "services.jar"), 0o644)
+        os.chmod(os.path.join(extract_path, "etc", "nodataperm.sh"), 0o755)
+        os.chmod(os.path.join(extract_path, "etc", "init", "nodataperm.rc"), 0o755)
+        Logger.info("Copying widevine library files ...")
+        shutil.copytree(extract_path, os.path.join(self.copy_dir, self.partition), dirs_exist_ok=True)