Hi @endlessuuu. When you update the firmware on the UNO R4 WiFi board, it is put into a special mode. While it is in that mode it will be identified as a random ESP32-based board. The board remains in this mode after the firmware update process finishes.
You should be able to put the board into the normal mode where it is once more detected as an UNO R4 WiFi by power cycling the board.
Please try this:
- Disconnect the USB cable of the UNO R4 WiFi board from your computer.
- Connect the UNO R4 WiFi to your computer with the USB cable.
After doing that, the board should be identified as an UNO R4 WiFi once more. If it doesn't, add a reply here on this forum thread to let us know and we'll provide further assistance in recovering the board.