.gma are the unlocking files along the .unl files for products with FID greater than 2200.
That's why the unlocked ones have FID changed to a neutral FID (65535) PID 255.
These ones dont need any .unl ; Cyclops with FID changed to 800 or 700 need an .unl file. No .gma coz FID is less than 2200
More infos:
Post n 12/15 :Ballebar's instructions about patched Cyclops releases