I ve got a 700 with problems. Unit was doing the reboot thing and I could not get it to go into test mode via sd card, so I tried to do it manually via the up up down menu right left method and I think I advertingly hit a wrong key or something because the screen will just stay black now no matter what I do. I can still get the unit into testmode via the up up down menu right left method. Any help would be great.

Sorry to hear about your black screen issue..

If you follow the instructions for DIY upgrade to 3.0 software/maps, you will have a great chance of getting your unit up and running again.

You don´t need several SD-cards to do it. Just put everything on the same card and follow the instructions. It involves formatting the internal flash drive of the unit and manually copying back all the files. The instructions are very good and the files are available for download.

Good Luck!

thank you for taking the time to respond. I pm(d) you with another ? Once again thanks.