At first i had unlock the device with mio moov unlock then i had copy the iGO8 folder on the root, but when i try to start iGO I get the following error "program application database cannot be found", I think the problem is with the sys.txt file, the same iGO8 was was working fine on mio c320B but it was installed on the SD card.
You need to edit the Igo icon path to point to the Igo.exe in the Igo folder.
Try touching the icon and hold on till a small window appear.
From here edit it to the path.
In mass storage mode - edit the igo icon properties to the path