Thread: Road of Russia Navicom (1868/1734/1280/4941) up to v.5.25

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This link is better, is the parentfolder which leads also to the Topo Versions.
Btw. if you use Universal Extractor the image is not recognized by Garmin

Originally Posted by tom1807

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Btw. if you use Universal Extractor the image is not recognized by Garmin

Tom is right. Here is why.

Firstly, the first byte of the extracted map is 0xff in hex which is not accepted by GMXT, GMPC and Nuvi. You need to convert each byte wth value V to the value V xor 0xff.

Secondly, after the above conversion the signature at offset 16 is "ASKIMG". You need to change it to "DSKIMG".

Both tweaks should be easy for Caty, but your mileage may vary. :-)