I have had my unit for 3 years now and have done nothing to it till yesterday. Ordered the Navteq 2013 map upgrade and feature enhancement from pioneer electronics site. Followed the instructions to a T. Hooked the car to a battery charger, started unit, inserted sd card 1, followed onscreen prompts. Arrived at screen where it said 30 minutes remaining with progress bar. Left car for about 30 minutes and returned, still had 5 minutes remaining. Left again and checked again in about 5 minutes, found screen blank and buttons illuminated. Read several warnings to not cycle power while updating. Figured it best to leave it alone. 2 hours later nothing….could not leave on overnight. Powered off and checked the next morning, still no response. Any ideas or help would be greatly appreciated. Thanks.

I had same issue. i had to send to pioneer and they charged me $230 to reinstall software and perform all the upgrades. I had no other choice because stereo would not come on.