I’m currently using RAK 4630 5005 Wislock. When I want to connect them to PC through USB, it always showed USB malfunctions unknown devices.
I have tried 3 USB cables, 2 PC, and 3 boards. All showed USB malfunctions.
And when I write s140 hex files into boards, it will show JLINK cannot power on CPU (error -1). I don’t know if it leads to the problem.
The board can operate properly on making ble connections and sending data. But just cannot use USB connections. Thank you.