Your device bootloader must be unlocked.
Before installing custom firmware, you must unlock the bootloader. mt6580 firmware android 9 install
Extract the downloaded SP Flash Tool zip archive to an easily accessible folder on your PC (e.g., C:\SP_Flash_Tool ). Your device bootloader must be unlocked
Locate your Android 9 firmware .zip file (stored either on your internal storage or external MicroSD card). Tap on the file and swipe the slider to confirm the flash. mt6580 firmware android 9 install
Always back up your NVRAM partition via TWRP before flashing. If IMEI is lost, you may need to restore it using a tool like MTK Droid Tools. Conclusion