kolokythas wrote:The gmap3d.img is necessary if your device support 3D Building images (i don't know if yours do).
If you manage to connect your device in a PC and see the directories on it it could be easier!
Just have in mind that in some devices the .img maps are installed in a hidden directory named .system
Please, Keep us informed about.
I have done it, finally!!
i just did post number 6 and it worked. The maps are 2016.20. What I was getting wrong was not selecting USB 1st, so the unit can read whats on the USB pen drive. After reading the drive, I just go to NAV then settings/About/update... it then asks me if I wanna update map...