Well, you could try to cure it too [it can't hurt it anyway]. The full fw is available here: [Only registered and activated users can see links. ].

But before you do, back it up, format it with RMPrepUSB, create a Garmin folder and boot it to see if it makes any difference. If not, use Cure3. I think one or the other should work.

If still no go, try my suggestion from Post #6 of removing the battery for a while. You can google for opening guide, it's quite dissimilar to other 1xxx units. That's often used as a method of last resort for 'dead' units, and it just might work to completely drain all power from the unit .... worked for this guy just now: [Only registered and activated users can see links. ].