I managed to direct connect via my phone and update the firmware yesterday. But still when I try to connect via eg4 monitor or the web-based interface, it will not read the device info, and I cannot send it commands. Simply does not response. I've tried removing the dongle, reinstalling, shutting off, removing power sources, rebooting the inverter, nothing.
EG4 Monitor gives "unknown error", and web-based interface says "timeout" when trying to read thee info.
but it does manage to show me the battery voltage and grind power. That's it.
Help!!