Hi all It did end up that i did flash the card with retropie 4.4 , and voila no error at all while setting up the wifi , could not communicate with wpa_supplicant error is gone when setting up . it 4.4 works , lets go for the 4.5 :=) and perhaps do a update from 4.5 to 4.6 ? Edit: Did flash the card to 4.5.1 and working just fine with wifi and the setup during the wifi setup aswell Sure is strange :)

@thedatacereal The file in the /boot folder is only read on system boot, and it's copied in the proper folder in /etc. Any modifications you do in the configuration file for wpa_supplicant are not applied in real-time, but you can restart the networking service (which in turn will call wpa_supplicant) and they'll be picked up.