There are some EEPROM functions available, but I need to do more testing to make sure I won't brick anything. For now, just use Pit House on Windows if you can, as FW upgrade support is not coming in ...

Unofficial Linux / Windows (WinUSB) driver for PLEX PX4/PX5/PX-MLT and e-better series ISDB-T/S receivers (not V4L-DVB) ...