There are two primary official methods to update your device's software: 1. Firmware-Over-The-Air (FOTA)
| Issue | Solution | | :--- | :--- | | | Unroot device; revert stock recovery. | | Device stuck in bootloop | Flash vbmeta.img with --disable-verity . | | "DM-Verity" error | Run fastboot --disable-verity --disable-verification flash vbmeta vbmeta.img | | Rollback protection | Cannot downgrade from Android 13 to 12 without authorized engineering build. | tcl t770h firmware
