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No that's indeed what I get

It's due to the NT format.

I just tested a map from 2008 and this one works.

It's indeed due to the NT format and until it's not reversed engineered it can't be used

I've got topo france V4 pro.

It's working, only roads and waterways are not correct. they are scattered.

I'm thinking it might be due to the size, so now I'm trying to split up the map in smaller sizes.

Original is 3.4gb, I'm now testing for 1.7Gb

Got it working!



Just look for the tool "gimgunlock-0.03+MapSigPatch" and apply it to the img file you want to use in orux

Copy to device and done.

Tried again with some tools to unlock a map, split it, join it, not matter what, it's not working.



@orux did you test with official garmin maps?

Hello,





sorry, but it is not possible with locked or unlocked maps in NT format (the new garmin format used by garmin). It is an unknown map format.





orux

Do you know as of what year these are used?

Tried again with some tools to unlock a map, split it, join it, not matter what, it's not working.



@orux did you test with official garmin maps?

No, you can't.

With a recent map you only get a white box.

When I tested with a map from 2009, I could only see the "overview" map. So major road, cities and landmarks.



I think it's due to the unlocking of the maps. These are linked to the device ID, so probably encrypted.

Hi,



Same problem here.

Tried several time to rewrite the maps with gmaploader, but no avail.

Seems that recent topo promaps can't be used.

Only major roads or landmarks get rendered, but only if you split the topo map with gmaploader.