So I have V20 firm on N2 Pro and want to update to V21. I followed the instructions but all I get is no updating, nothing just a black screen when I try to update. I tried another Micro SD card too same results. Any tips?
I have a mint condition DOD GS600 up for sale. I have everything except the manual, remote, and box. I recently upgraded to a better dash camera so I no longer need this. Everything works as it should. I can send pictures upon request.