This is the safest method for updating or restoring your Huawei Y9 Prime 2019.

Sometimes it works but may cause network or NFC issues. Not recommended.

Whether you are facing the dreaded loop, a failed OTA update, or simply want to downgrade from EMUI 12 back to EMUI 9.1, this guide covers everything you need to know about the firmware for the STK-LX1, STK-LX2, and STK-LX3 variants.

This wipes all data and can hard-brick if the wrong firmware is used.