Again no luck. I got a gmapsupp in unlocked folder,copied to sd card, put to garmin but still no detailed map. It is weird bc I already have a map that is unlocked (from internet) and it is working.
Thanks for your patiens.
I forgot to mention, I downloaded GarminUnloker from the link but this archive name is 2.4, and the attachement for 5.2 shows me after trying unpacking "unexpected and of archive"