Figured I'd mention I heard a lot of people having troubles with SanDisk (least I think it was SanDisk) SD cards in the Blackbox cameras. One person on Amazon gave a good reasoning that SanDisk cards have some kind of special wear leveling logic in them that conflicts w/ the dashcam software causing corruption. SD card is fine but you find that you have to re-flash the SD card every now and then as it the dash cam seems to stop working w/ it. I had a similar issue and switched out to Samsung SD cards and haven't had an issue since. Just wanted to throw that out there if it drives anyone up a wall like it did me!