Huawei Y9 Prime Custom Rom — Free

Return your phone to Fastboot mode. Rename your downloaded GSI file to system.img for convenience, place it in your ADB folder, and run: fastboot flash system system.img Use code with caution. Wait for the process to hit 100%. Step 5: Factory Reset and Reboot

Before diving into the modification process, you must understand a significant roadblock unique to Huawei devices. huawei y9 prime custom rom

Realistically, only devices that were unlocked before Huawei shut down the official bootloader unlock service can run custom ROMs today. Return your phone to Fastboot mode