Unlocking Cyclops GPI files using PGFT and other similar methods is fine for older devices. For newer devices they must be decrypted but that's optional for older devices without protected firmware. Your zumo 660 is an older device, so either of the methods you used should work. Have you also tried the "Unlock (FID 65535 ..etc)" button in PGFT because that should work for you without an UNL code. Also try the already decrypted ("unlocked") [Only registered and activated users can see links. ]. If nothing works then maybe you've not got the camera warnings enabled in your zumo's settings.... Something like: Tools>Settings>Proximity Points>Change and ensure the "Garmin Safety Cameras" entry is checked.