Huawei STK-L21M FRP Android 10 Downgrade

Huawei Y9 Prime 2019 Bypass FRP on Android 10. How to Downgrade Android 10 to 9.0.1 and remove FRP on Huawei STK-L21. Download Huawei STK-L21M Downgrade firmware. How to Safely Downgrade firmware on STK-L21. Remember this post is for educational…