lost activity, software update

I have an edge 25. I have been using it for years without issues. When I plugged it in after my ride today (7/8/2021), my tablet acted as if I were repeatedly connecting and disconnecting it. It claimed that it had a problem and suggested a software update (version 3.30), which I installed. Once this was done everything seems to have been wiped from its memory - courses, history, and activity (including the just completed ride). It has never acted like this before. It seems to be OK now. Is this a known issue with this software update?