Do not turn off the power during this process to avoid "bricking" the board.
If the TV continues to restart, you may need to perform an EMMC software update instead of the standard USB method. Download MS338 PB801 1366x768 REF40 part4 rar
Power on the TV; the indicator light should begin blinking, signaling the update is in progress. Do not turn off the power during this
The board typically comes in 4GB or 8GB internal storage configurations with 1GB of RAM. The board typically comes in 4GB or 8GB
This specific firmware is tailored for 1366x768 (HD Ready) displays.
If the display remains incorrect after installation, you can use a small patch file via the "Import/Export" option in the Service Menu to specifically change the resolution without a full firmware re-flash. Troubleshooting
Always back up your original firmware using a tool like the RT809F programmer before attempting an update.