PM sent.
In a case like that, the first thing to do is a full factory reset. That can solve issues like this. And hopefully the USB issues are not a sign of a hardware problem. Restoring the image will only cost you a bit of time, so it won't harm to do it. But, I would suggest using a new micro SD card. They are getting old and a lot of problems people are having with the older devices seem to be related to failing SD cards.
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