Thread: *.gma - What's inside?!

Originally Posted by Swall

Another fact is the device performs the map enabling procedure on each cold start. So it does not relies on the stored history data

For most devices, the info on the successful authentication of the map is stored in non-volatile memory after the first success and kept there right down to the next hard/master reset or NonVol clearing.
For example, some tricks for temporary map authentication are based on this property.