Somehow some of our RAK4631 USB is no longer detectable from any host computer (I assume the USB is damaged) but we managed to program new firmware using JLink directly to the SWD pins.
Sometime later, the RAK4631 can no longer boot the firmware that I flashed. The JFlash app shows no signs of error, so I assume the flash is OK.
Currently, the board is constantly doing some kind of breathing animation on the green LED even after I flashed a firmware that will turn on the blue LED (it stays off the entire time).
I’m wondering if anyone has experienced a similar thing at some point and if you have, what did you do to make it work again?