Firmware for these generic boards is often hosted on technician forums and YouTube tutorial descriptions. You can find related software and installation guides at the following locations:
Usually distributed as multiple .rar parts (e.g., "part3") due to file size. Where to Find the Download Download MS358 PB801 1366x768 512M USB part3 rar
Sites like Electronics-Tricks frequently host various versions of this firmware for different panel resolutions. Hardware Repositories: Platforms like Dip Electronics Lab Firmware for these generic boards is often hosted
Place the extracted firmware file (usually named allupgrade_ms358.bin or similar) onto the root directory of the USB. Download MS358 PB801 1366x768 512M USB part3 rar
Android TV Firmware Installation TP.MS358.PB801 | Full Tutorial
Format a USB drive (8GB or smaller is recommended) to FAT32 .