Thread: firmware reflash

Originally Posted by leedude

i took the locked .img file out of the torrent and unlocked it with gimgunlock+mapsig and then drag and dropped it onto an sd card into a folder named garmin and when done changed the files name to gmapsupp.2 and then put the sd card into the nuvi and thats about where i am at, getting the can not validate map product.

You need to be more precise in what you did exactly. If you renamed the map file to gmapsupp.2, it will not be recognised as a map file by your device and thus you would not get the error message about not being able to validate the map...

Note: I moved your post from the Garmin Discussions section to the Garmin Firmware section where it is more appropriate.

@leedude.
Try this:
Create a folder in sd named 'Map' and copy your unlocked .img (anyname.img)in it, backup and remove from nuvi any .gma and .unl files along any previous CN covering the same area.

sent with my phone

Clearly no purpose C, well spotted.

@leedude
As said, it doesn't need patched firmware. You may not have done any harm but you certainly haven't given it any benefit. If all else fails flash back unpatched original firmware but it seems certain the problem involves the map of course, although that problem is likely not so much with the map itself rather it's with interference of its use. It's being 'seen' by the device because the message 'cannot validate' [authenticate?] is shown which indicates a GMA check failed so therefore naming and placement is not a problem. If properly unlocked [it would appear it is if you did in fact use latest gimunlock+mapsigpatch] that leaves catymag's advice about removing any previous map version and any UNL & GMA files as the likely solution and yes, of course she means remove from the device as well as the card if present.

Originally Posted by Neil

Clearly no purpose C, well spotted.

@leedude
As said, it doesn't need patched firmware. You may not have done any harm but you certainly haven't given it any benefit. If all else fails flash back unpatched original firmware but it seems certain the problem involves the map of course, although that problem is likely not so much with the map itself rather it's with interference of its use. It's being 'seen' by the device because the message 'cannot validate' [authenticate?] is shown which indicates a GMA check failed so therefore naming and placement is not a problem. If properly unlocked [it would appear it is if you did in fact use latest gimunlock+mapsigpatch] that leaves catymag's advice about removing any previous map version and any UNL & GMA files as the likely solution and yes, of course she means remove from the device as well as the card if present.

Many thanks for the quick replies, i have now sorted it, i have installed the the pc locked instal from the torrent to my pc and then fixed with unlock mapsource.exe, formated the sd card and just used mapsource to send all the maps to the sd card, when complete reboot nuvi and now all working. Again many thanks for the help, Just one more question if the unit did not require flashing, why is this writen in the first thread Quote (Procedure to use the patcher and to load the patched firmware in preboot mode ("GSV: Yes" devices) : and from how i read it mine is a GSV: Yes" devices, and of course i may be wrong.

HWID: 1371 | SWVS: 820 | MAP: Yes | GMA: Yes | MSV: --- | GVS: Yes | File: nuvi24x5and25x5_GCDFile__820.gcd

It's GVS= Yes ( it means you cannot flash in your nuvi a non signed firmware with traditional method).
But is MSV:--- (map signature verification) that means it doesn't have new protection ( you can use unlocked maps)

sent with my phone