TOPO Austria v4 PRO

pietu · 11th July 2014, 05:34 PM

Originally Posted by Cnfhbr

Yes, this map contains additional protection (Map Signatures) and it will not work after conventional unlocking on the newest devices (like, nüvi 55/56/65/66/25x9/26x9, zūmo 590, GPSMAP 64, Edge 1000 etc.).

or new devices software use additional protection or both (new maps and new devices) ?????

**Cnfhbr** · 11th July 2014, 06:04 PM

Originally Posted by pietu

or new devices software use additional protection or both (new maps and new devices) ?????

Previously TOPO maps did not contain Map Signatures unlike the CN maps.
Map signatures are a digital signature that is written to the map files that Garmin produces. These digital signatures can then be used to verify that the map data has not been altered since the signature was written. On devices that support reading map signatures, any map that has been altered and does not pass the signature test will not be opened.

pietu · 11th July 2014, 07:05 PM

Originally Posted by Cnfhbr

Previously TOPO maps did not contain Map Signatures unlike the CN maps.
Map signatures are a digital signature that is written to the map files that Garmin produces. These digital signatures can then be used to verify that the map data has not been altered since the signature was written. On devices that support reading map signatures, any map that has been altered and does not pass the signature test will not be opened.

And only new devices read these Map Signatures ??? well we go back to post #8 ???

maybe need be carefull with another old devices also, when new firmware coming ????