I had an issue with the non-nav version. 2016 fist, v1.0 software. Freshly formatted flash drive, unzipped the first file to the root, started the car, plugged in the drive. Got the updating software message but after 45 minutes no change in status. Gave up and pulled the flash drive out and it didn't pop up any message at all. Next time I started the car I got an error about being out of space or incompatible version. Everything seems to be working as it was before attempting the update (yay, didn't accidentally brick my head unit,) settings still show as at v1.0. Planning on resetting to factory defaults in the morning and starting over unless someone has a better idea.