Thread: How to properly format a Nuvi after using kunix's cure

If you are sure you have correctly made the Cure3 fw and loaded it and the unit's still in a boot-loop, then you now have a big problem. The whole idea of a cure fw is that it doesn't load any files therefore bypasses any corrupt file which is causing the boot loop [a map, text, keyboard, voice etc file even a gupdate.gcd file which loads fw updates], all are bypassed with a properly made cure fw.

However, when you say 'brick mode', maybe you're simply saying that it won't boot, rather that it's got a boot-loop with a white screen as you originally had. The cure fw cannot boot the unit. It is loaded simply to allow access to the internal files to delete them or to reformat the unit. If it's just stuck and not booting that's ok, just do this:

You should be now able to access the unit in Mass Storage Mode and see the internal files. Make a backup of all the files in the unit, but be aware that one of those files is probably stopping the unit from booting. You could just remove the most likely if you knew the history of the device, but as you bought it like this you'd be lucky to select the right one, so just reformat it from the tut in Post #1.

After it's reformatted, create a folder in the unit named Garmin and then load the full original fw to the unit. Turn the unit on to see if it boots fully, and then turn it off again. Reconnect to PC and check if the unit has created a file GarminDevice.xml. If it's named GarminDevice.tmp then rename the extension xml. If all that goes ok, then connect via WebUpdater and redownload the necessary Voice Text etc files. Put basemap, detail map and Time zone map in the Garmin folder.

If you still have the boot-loop, carefully make the cure again and reflash it. If it doesn't work then something else is preventing your nuvi from booting, maybe hardware problem or corrupt non-volitile memory.