Yesterday, I was running Unitrunker with my Pro-668 and dropped it on my desk. The radio froze so I removed the USB cord and when I turned it back on this error code 4-00 appeared. Any idea how to fix it?
Thanks. I tried reformatting and putting it back in the radio but it didn't work. I just ordered a new SD card to see if that is the issue. I had a spare but had to recently put in my 436hp.