I use a J-LINK EDU mini to flash the RAK4631 board. During J-Link Commander, I cannot open the file "C:\demo\seggerdemo.bin 0x0" as the video instruction belowed when I am running into trouble because I have connected my external J-LINK to my debug-in pins on the board.
segger.com/products/debug-prob…-link-edu-mini/#gallery-2
segger.com/products/debug-prob…-link-edu-mini/#gallery-2