Afaik there are no ROMs available in the net (haven't discovered yet) and MyGuide is insolvent. There are different hardware platforms of MyGuide 3100 on the market and flashing the wrong ROM will cause boot failures. If still haven't got it, you can get it now filling the form you see on this page. First of all, be sure you got the update file for your Magellan Maestro 3100 device, downloaded from.
Magellan Maestro 3100 In order to update your GPS device: Magellan Maestro 3100 with the latest update, follow next instructions.
