Im trying to get my original back up and modified tune from the tuner u7137 to my computer so I can send them to Hemifever tuning for a custom tune and it only uploads them as a drg file which wont load to an email :crashing: . is there something im not doing right? I have the ds downloader and it ...

Anything to help my issue?

I did have a problem with it actually, I ran the sonnax great then bought the tuner, had it installed and the sonnax started holding 2nd gear and wouldn't let me shift, but then when I unplugged it the truck ran perfectly fine with the tuner....