This site frequently hosts firmware for the TP.MS358.PB801

and is a common source for these specific "part1/part2" archives.

The extracted file should typically be named allupgrade_ms358_sos.bin or similar for the TV to recognize it during boot.

Installing the wrong firmware resolution (e.g., 1920x1080 on a 1366x768 panel) can cause a distorted display or a "black screen" state. Always verify your panel's sticker before flashing.

Check Kazmi Elecom or their associated Telegram channels, which are primary repositories for LED TV software in South Asia and the Middle East.