Very good explanation by Caty how to find the appropriate HwID for your nuvi.

Quote Originally Posted by matiasmalaccorto View Post
when in turn on the unit and in seconds shows "loading maps" but stops there and turns off. Seems that the unit doesnt go to read the sd?
Sorry, about that but this is not good. If you can't load the FW in Boot mode and also by SD card most probably there is a problem with the memory and the FW can't be loaded on the specific region. On your place I will contact Garmin CS.

Cheers,