This script automatically pulls the services.jar from your android device, Patches it with Haystack for android 11, and then compiles it back into a flashable magisk module.

This script is intended to be run on a linux system (WSL should work)

ADB and java are required.

If ADB is not enabled, or fails to find the services.jar file, this script may produce a bootloop causing magisk module, (if you dont know how to resolve this from the recovery, use the manual installation)

Run adb devices to make sure your phone is connected, and that it is the only connected device.

For this script to work you must be in rooted adb mode, run adb root to restart adb in root mode

Create a folder to house all the files required.

https://gitlab.com/oF2pks/haystack/-/raw/11-attempt/spoof_AVDapi30.zip.ONLY'MAGISK&ANDROID-STUDIO

https://gitlab.com/oF2pks/haystack/-/archive/11-attempt/haystack-11-attempt.zip

https://github.com/DexPatcher/dexpatcher-tool/releases/download/v1.8.0-beta1/dexpatcher-1.8.0-beta1.jar

Rename spoof_AVDapi30.zip.ONLY'MAGISK&ANDROID-STUDIO to spoof_AVDapi30.zip.

Unzip haystack-11-attempt.zip.

Move dexpatcher-1.8.0-beta1.jar inside the new haystack-11-attempt folder.

Run the following command using rooted ADB to fetch the file we are going to modify.

adb pull /system/framework/services.jar

Then copy it into the haystack-11-attempt folder.

With java installed in a linux environment, run the following command inside the haystack-11-attempt folder.

java -jar dexpatcher-1.8.0-beta1.jar -a 11 -M -v -d -o ./ services.jar 11-hook-services.jar.dex 11core-services.jar.dex

This should create several new classes.dex files.

Create a repack folder inside the haystack-11-attempt folder.

Then run zip -j repack/services.jar classes*.dex to create a new services.jar

Go back to the first folder and unzip the spoof_AVDapi30.zip file (take note of which files belong to it)

Delete the old services.jar located at system/framework/services.jar and replace it with the file from the repack folder.

Put all the unzipped files back into a zip file named spoof_AVDapi30.zip And install this as a magisk module.

If your phone is still plugged in you can run adb push spoof_AVDapi30.zip /storage/emulated/0/Download/ to send the file to your phones downloads folder.

The method and downloads are from https://forum.xda-developers.com/t/signature-spoofing-on-unsuported-android-11-r-roms.4214143/

The script and this documentation was created by myself.