How to backup Nuvi NV (region41) with sd

**Butters** · 20th March 2021, 11:48 PM

Assuming you have the device which uses that fw you linked (Note that Alpha 200i EU and US both have HWID 3433), it's not surprising that nothing was dumped. That would be because the folder naming of "3508" likely doesn't match the actual device HWID of 3433. You need to confirm before trying again. Additionally, if the device is MTP capable with a hidden RWFS partition then it will write to 2/: for the media card and 1:/ will write to RWFS. Additionally, the non-vol region will be 154 not 41 in that case.

WARNING: The chances of bricking a device by flashing the incorrect Ldr.bin are dire and most probably will result in a permanent hard-bricking. If your device indeed did have HWID 3508 it would now be bricked if the Ldr.bin was flashed to region 12.

You should check the actual HWID of the device itself before going further, read here: [Only registered and activated users can see links. ]

**miroslavbl** · 21st March 2021, 12:04 AM

This is part of my GarminDevice.xml file:

-<Model>

<PartNumber>006-B3508-00</PartNumber>

<SoftwareVersion>320</SoftwareVersion>

<Description>Alpha 200i</Description>

</Model>

I bought device from Germany. There is mark "Alpha 200i K", but I can not find any software with this mark.

**Butters** · 21st March 2021, 12:15 AM

It may be a "localized" version of 200i, perhaps made for a specific market. Without the original fw it's hard to help you. If you can access the hidden menu behind the battery symbol to find the PBC/PN and it matches the one for the device with HWID 3433 then it may be possible to use that fw's boot.bin/ldr.bin to dump the regions.

NOTE: It might also not be capable of dumping regions if the rrgn command is not written in the fw.

**miroslavbl** · 21st March 2021, 12:28 AM

You are unbelievable!

Good job!
You're right again.

When I changed the folder name from 3508 to 3433, everything was OK.

There is not the hidden menu behind the battery symbol and everything works with "1:/" in commands. Mark 1:/ is micro SD card.

**Butters** · 21st March 2021, 12:43 AM

I've just noticed your post [Only registered and activated users can see links. ]. Seeing you've been able to use the Ldr.bin for HWID 3433 to dump regions, it may be possible to fully convert to HWID 3433 by flashing an RGN file in preboot or use xrgn commands to flash the BIN components. The "K" version limiting the use of TT15 collars may then be overcome. There's still always the chance you'll brick it of course so all risk is yours naturally. Best to compare the fw_all 14.bin and logo 16.bin from the fw with the ones you've dumped, i'm tipping there will be some difference ... most likely in the logo region (decimal 16/hex 0x10). Use a hex reader or compare hashes.

**miroslavbl** · 21st March 2021, 01:14 PM

I did backup for all regions on Alpha 200i K few hour ago.

There are backup just for regions 5,12,14,16,34,43,45,48,83,144,152,154 and 180.

I have error message for regions 3,10,17,19,21,44,46,49,50,51,74,75,76,77,90,93,99,100,102,123,131,134,135,136,166,245 and 248.

I have message "Success" for all other regions from 1-255, but they have 0 byte size.

I hope that this informations are useful for somebody.

@Butters Thank you for help again!

**damted** · 13th August 2021, 02:14 PM

Maybe already passed in this topic, but otherwise can be helpfull for others

I created a nonvol Backup of my Zumo 345LM
After a few failed attempts I found the right settings in update.txt

Code:

Please Login or Register to see the links

I inserted the prepared SD card with ldr.bin in the zumo and switched it on.

and that one did the job!

I see a 154.bin with 4.194.304 bytes file size.
Logs show also ok.

Thread: How to backup Nuvi NV (region41) with sd

Thread Tools

Display

Advertissements

Butters is King of Garmin :)

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions