Hi, I had Wifi issues, too at my X98 plus A6C9. They revealed e.g. by frequent connection drops or poor connection bandwith to my router (e.g. 1 MBit/s). Accidentally today I opened in Windows 10 the device manager, right-clicked in the device tree on Firmware and then on System Firmware. After that in the context menu I clicked on Update Driver. Unexpectedly the message showed that the driver (System Firmware) has been updated and I should restart Windows. During reboot it showed, that the System Firmware (Bios?) was being updated… Now the name of the entry in the Device Manager below Firmware has changed from System Firmware to Teclast System Firmware. By the way I noticed that the Wifi connection got much better (e.g. 72 MBit/s) with no connection interrupts. Anyway I’m wondering why I had to trigger the update manually as I have configured Windows to update all drivers automatically..
I did the same and now cellular can’t be turned on, it’s turned off and there’s no connect button. Driver update doesn’t find anything and I haven’t noticed any difference in the Wifi connection or its speed, it still stays around 30 MBit/s.
Edit:
I rolled back the firmware and uninstalled the cdc mbim driver. Now the cellular is functioning again but the speed is also quite terrible, max 4MBit/s.
