- Find FTF Firmware & Lock Remove File for specific device online. Place both files under
%UserProfile%\.flashTool\firmwares
Example:
E6553_32.2.A.0.305_R7C_CustomizedVN.ftf // Firmware
E6553_32.2.A.0.305_R7C_RemoveLock.ftf // Lock Remove File
-
Open Flashtool >> Flash Device >> Flashmode >> Start flashing the Firmware first:
-
Turn on the device
- Get to the home screen by finishing the first setup as quick as possible. If fail, reboot & try again.
- Switch to Guest account (Settings>> Users >> Guest)
- Remove Guest account (Settings>> Users >> Remove guest). Reboot.
- Connect to a Wifi. If fail, reboot & try again.
- Activate my Xperia Protection (Settings >> Security >> Protection by my Xperia >> ACTIVATE >> Login with any Google accounts) . If fail, reboot & try again.
- Deactivate my Xperia Protection (Settings >> Security >> Protection by my Xperia >> DEACTIVATE >> Login with previous Google accounts) . If fail, reboot & try again.
- POWER OFF will be popped out. Press that.
- Now the device no longer ties to my Xperia Protection after we turn on.
- Do not use a long email password.
- Disable 2FA & Recovery email/phone inside Google account.
- Check your email to verify new sign-in activity.
- Create a Settings shortcut.
- This method is tedious and time-consuming. Practice and patience is the key.
- It is recommended to flash an official firmware after these steps.