Use this if you are upgrading to a completely new Android version.
: Click Download , power off your phone, and connect it to the PC while holding Volume Down (or just plug it in, depending on the model). mt6739 firmware
Flashing a stock ROM completely erases all internal storage. Back up your photos, contacts, and documents. Use this if you are upgrading to a
, which contains your unique IMEI and network calibration data. Only use "Download Only" or "Firmware Upgrade." Backup First power off your phone
: The final step is to reboot into fastboot mode, connect to a PC, and flash the patched file using the command fastboot flash boot patched_boot.img .