For most boards of this type, you must trigger the update manually:
: The standby LED usually blinks rapidly during the process. Once it stops or the TV reboots to the setup screen, the flash is complete. 4. Post-Update Calibration
: Use a high-quality USB 2.0 drive (4GB–8GB is ideal). Format it to FAT32 to ensure the TV can read it.
: Never turn off the power during a flash. If the process is interrupted, you could "brick" the board permanently. 2. The Loading Phase