Today's addition
today i am even more confused. i tried nextgen for WinCe and it also works( but slow -certainly)
Spoiler: pic
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it find satellites and lock position, just like igo8.

Then i emptied completely internal storage and named folder like falks navigator, copy primo inside(bild i didnt try winCE-iGO Primo 9.6.13.319729) , named falcnavigator.exe, one map ,sys with port and baud (just to check).no fonts,no dll-s, no spedcams ,no branding and..
And still no effect, no gps lock!!!!
Spoiler: pic
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Smart thing shroud be just to walk away, to turn back and don't bother with it again. But i still think there is life in this navigation. it doesn't have a scratch on it, like new, and i changed battery so like new.
What is wrong with primo build and this device to be not compatible??????
One more thing, just realized that device wont read micro sd of 16gb, so i thing it only read up to 2 gb sd, wit what i tried primo also, nothing different, no success