If your phone won’t boot past the TCL logo, clear the system cache and data: Power off the phone.
: TCL strongly advises backing up personal data before upgrading to prevent loss.
Use the volume keys to navigate to and press the Power button to confirm. Select Reboot system now . 2. "Installation Failed" Error via OTA If an official update fails to install:
If your phone won’t boot past the TCL logo, clear the system cache and data: Power off the phone.
: TCL strongly advises backing up personal data before upgrading to prevent loss.
Use the volume keys to navigate to and press the Power button to confirm. Select Reboot system now . 2. "Installation Failed" Error via OTA If an official update fails to install: