In the same Developer Options menu, turn on OEM Unlocking if the option is visible. 3. Unlocking the Bootloader

The device will automatically restart to apply the changes. 3. Manual Firmware Change/Update (Using RUU Mode)

Download the Minimal ADB and Fastboot toolset or the official Google Android SDK Platform-Tools. Extract the folder to an easily accessible location on your PC (e.g., C:\adb ). 3. The Correct Firmware File