I've had a unit that stills charges the car but the "smarts" (using that word very loosely) has been busted for about 4 weeks now. I didn't notice it until the Blink people sent our their mass email about the 2.0 upgrade and that my unit will miss since it wasn't reporting. I had assumed it was crashing a lot but did not realize in this case it wasn't booting enough to be useful on the network. The unit will charge a car but none of the other features work and the screen is either black (but the backlight is on) or one the partially drawn screen when it crashes.
When I finally got around to calling Blink about it the person I talked recommended an SD card swap since my unit fell in a range that they thought had issues w/ bad SD cards. Over a week later I hadn't heard back from them so I called them today and found out they had stopped doing the card swaps until they make the 2.0 versions. I wasn't a little peeved that they had not sent out any notification about it. Apparently their phone support people got overwhelmed when they sent out the mass email (says something about the number of users having problem).