Once you have the extracted file, follow this general procedure for MS338 boards: Format a USB drive (8GB or 16GB) to FAT32 .

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The firmware for this board is often split into multiple compressed parts due to its size (Android-based boards can be over 500MB). TP.MS338.PC821 Resolution:

After installation, you may need to access the service menu to adjust the screen mirror or logo: Press Menu + 1147 or Source + 2580 .