Perform a "Factory Reset" from the service menu if necessary to clear any old cache.

Plug the TV back in. On many CV920E boards, the update will start automatically.

If it doesn't, on the TV panel while plugging it in.

: Searching for your TV model + "CV920E-A42 firmware" on community forums is often the most reliable way to find a tested file. How to Install (USB Flash Method)

Installing firmware on these boards is straightforward but requires a specific file naming convention for the board to recognize the update. : Use a small USB flash drive (8GB or 16GB is best). Format it to FAT32 . Add the Firmware : Download the .bin or .zip file and extract it.