: If you have the extracted .bin or .img file from the .rar archive: Format a USB drive to FAT32 .

: Go to Settings > About > System Update to check for official over-the-air (OTA) updates.

Unplug the TV, hold the physical Power button on the TV panel, and plug the power back in. The update should begin automatically. 3. Safety Warning

Flashing the wrong firmware or a corrupted file can "brick" your TV (making it unbootable). Always verify that the firmware matches your TV's and Main Board Number exactly before proceeding. How to update the software on an Android TV - TCL Support