Thread: Cyclops™ Safety Cameras for Garmin

Originally Posted by pietu

i think it is not possible make tool to change FID all gpi file because offset (target bits) not same place in all files

Are you sure? It is assumed that 5th byte (at address 0x04) shows an offset into any GPI files that are locked by means of GPI Creator.
Next, we use this offset +9 bytes to find the start of MapId (2 bytes swapped), PID (1 byte), RgnID (1 byte) & VenID (1 byte).

Can you give an example which is not subject to this rule?