I don't think so giuliomoro. It had been wired up for a few weeks. I had figured out how to use GPIO from my ESP32 to trigger a sound on the Bela. It's pretty neat actually. I have another ESP32 that I attach to my foot with an accelerometer. When it detects the down beat it sends EPS-NOW messages to the ESP32 attached via 3 GPIO lines. This triggered a tambourine sound with the 1 line line to say it triggered and the other two a velocity. Very low latency so it worked great. This had been working for many weeks now and I hadn't touched any of the connections. I was going back to create a TCP like protocol over ESP-NOW for other types of communication. During this time the ESP32 was connected to the Bela board, but I wasn't working on the Bela part, so it could have died anytime in between, but I wasn't making any changes to the wiring. This weekend I was ready to test while stressing my TCP like protocol to see how the latency was with both things running, and that's when I discovered I couldn't connected to the Bela.
Now during this time we did have the power go out. It happens every few weeks at my house for what ever reason. All of my other devices, two ESP32s my Logic Analyzer and second Bela Mini are fine, and they were all connected to the same USB hub. The only thing I could think of is that since I'm using the USB-A connector on that particular Bela mini, that it isn't as electrically protected as the USB micro connector is?