Garmin Nuvi 55 updated to the latest firmware 5.40.
Garmin Cyclops Unlocked doesn't work. That is cyclops gpi files unlocked with FID 65535 PID 255 RgnID 255 VenID 0, doesn't work.
If you get the Garmin Cyclops Locked files and generate an unlock code with the Jet Mouse Garmin Unlock Generator 1.5 with:
FID 700 PID 1 RgnID 0 VenID 0 + UNL file - > It works
FID 900 PID 9 RgnID 0 VenID 0 + UNL file - > It works
So there, we go back to using good old unl files to get the cyclops files working again