Thank you very much for your reply. I have unlocked the locked gmapsupp.img and it is working fine, however the FID is not 1204 of that map but 5026 as far as I remember ??? I also copied the OFRM_IZO.img into my GPS device, but the device does not see it, what am I doing wrong ? Do we have the 3D buildings option in that locked file, I don't see it anywhere on the device, it only appears in the already unlocked custom files. Can someone help please ?