Thread: Transform a Nuvi 37xx in a Nuvi 34xx for dummies

Question about backing up the NV memory. I followed the instructions in post # 337 in preparing the SD card. I shutdown the nuvi, inserted the card and turned it on. The Gamin logo comes up, the "Loader" words comes up, then disappears. Now I just have the Garmin logo and a thin green bar at the bottom edge of the screen. The bar goes from the start of the "A" in "Garmin" to about the end of the "M" in Garmin. It's been sitting here like this for about 10 minutes and nothing else has happened. What should I do? Did I do something wrong?

According to post #337, it should have rebooted on its own after writing the NV backup, but it's stuck at the Garmin logo with this green bar at the bottom.

EDIT: SOLUTION WAS FOUND. See Post # 525.

Have you removed the sd?

Insert the sd in your nuvi, you'll see at boot a software loading message and nuvi will write your NV backup in sd, let it reboot, shut it down, remove the sd and keep your Nuvi NV backup in a safe place.

I ended up forcing a shutdown (by holding the power button for 10 seconds) while the green bar and Garmin logo was still on. Then I removed the SD card and started up the unit again. Everything seems ok and the SD card contains the backup file 41_backup.bin.

One suggestion for the instructions in post # 337: In the instructions it seems like you should put the following text in the update.txt file:

rrgn,41,1:/41_backup.bin
reboot

but the "reboot" command is not recognized according to the update.log file. So the only text that should be in the update.txt file is:

rrgn,41,1:/41_backup.bin

EDIT: SOLUTION WAS FOUND. See Post # 525. Reboot command is valid. I had a space after "reboot".

My nuvi log

@class3
You appear to have a space behind the 'reboot' command. i.e. like this without the quotes:
"rrgn,41,1:/41_backup.bin
reboot "
Remove it and retry the backup.

@Catmag: off topic but an update.

Garmin will exchange for a new nuvi 3450 (not refurnished). My question to you is, once i get a new device and I will do a full SD back up [Only registered and activated users can see links. ]. In the future if something mess up to my device, will the SD backup bring it to when I first got the device?

Where can I actually get the firmware of nuvi 3450? I know there's a firmware in here but that is for 34xx and i scare if i use that, it will show all those extra feature again. Can I extract from Nuvi 3450 or how?