Well, thank you still, Butters
There is an update to the situation, I took those GPS's with me home for the weekend, to work this out.
Those were bought from Gearbest, so Chineese devices.
I found a gupdate file somwhere, dont remember where and I'm pretty sure it was not for his exact device, however, when I use my laptop I could upload that gupdate file (got first something about that version beeing older but still went through with it, after the installation I got text on the GPS about loading maps or something, I actually thought it was about to show me where I was (kinda lost in this), but no, now I'm in the same sh** as before - no connection and same behavior. This time I'm NOT going to do the same to the other device, until I can get a better gupdate file.

I did get the whole content of off the second GPS, system folder and anything - is there a way to build gupdate from that?
I have asked Garmin.cn for the gupdate file but no answer

Regarding G7toWin, I tried that again, after my failed update this morning, same as before.

I think the hardest part for me is finding a cure file, or gupdate...