And it is important that do this process with your own risk. Ok, here we go
- You need to download ROM which was most wanted with .zip ( for example MIUI, MODACO, and more)
- Put on to SD external (or for CWM, it takes CWM external)
- Reboot into recovery via ROM Manager or shut down the phone and press the power + Vol down button or you can takes 2X application reboot
- After Recovery mode, backup your ROM before by choosing backup and Restore >> backup
- After backup, go back to page one
- Choose Wipe data / Factory Reset
- Choose Wipe Cache Partition
- Choose Advance >> wipe Dalvik Cache
- Go back to page one and choose the “install zip from SD card”
- Choose zip from SD card >> file zip ROM that has been copied
- Installing zip
- If all process have done, please reboot system now