[Seriel]

1. I had the sound issue on an old Build of the firmware (1.03, I now have 1.07) but it was working on Windows so that’s odd.
2. The weak WiFi appears to be a hardware issue with the tablets in general. There are a few guides on how to make it better but it requires soldering.
3.  https://techtablets.com/forum/topic/x80-plus-android-os-only/ Should work with the Pro, give it a try

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