While detailed public documentation on this exact string is limited, these types of identifiers are typically used in:
: The correct firmware file (often named allupgrade_ms358_809.bin or similar) must be saved to the root directory of a FAT32-formatted USB drive. n.m358.809 software
Locate "Mirror Mode" in the Panel Settings within the factory menu. While detailed public documentation on this exact string
Firmware updates may provide newer versions of the Android interface or improved app compatibility. Sourcing and Installation n.m358.809 software