Im having an issue. I went to flash a 2000gmc that was converted from a 4.8, to a 5.3. Went to full flash with the v2 and got it licensed, it got all the way through the flash then errored $0541 message. I then flashed it with my laptop hooked up, it said it had an inccorrect file and needed to be recovered on a full flash process. I started full flashing the truck and it all went it and loaded properly and allowed the truck to start. It ran fine. I then went to load in a few changes in the tune, using the base file as the one i had just flashed...and it keeps telling me that the truck needs to be licensed. Iv already licensed the truck and flashed the truck prior. All my software is up to date, I have since tuned a few duramax's with no issues. Wondering how I need to proceed. Like I said the truck licensed fine and flashed, now is saying I need to license it. Thanks...