iGo [Primo ?] on a Mio Spirit 7700LM - Any info on if and how much appreciated

Hello, the unlock is now on the screen, which folder files for primo should I create,
on sd Primo or iGO, or internally Primo or iGO. sys.txt where Primo is.
Now have Primo on sd in folder \igo and start igo.exe but can't find it.