Plug your USB drive into a computer and format it to FAT32 .

A correctly formatted USB drive is critical for the TV to recognize the update.

The "MS338 PB802 EMMC TOSHIBA FLASH rar" file contains the binary (.bin) software needed for the board.

Firmware can often be found on specialized electronics forums such as Lab One Inside or through community-shared links on social media.

Ensure you download the version that matches your TV's panel resolution, typically 1366x768 (HD) or 1920x1080 (Full HD).

It is highly recommended to always back up your original firmware before attempting an update.