Interesting find here:
Installed fresh Win7 OS on Z77 UP7 platform with LAN enabled. Then installed, rebooted and ran the 4.1 version. Followed by the 2.08 one, rebooted and it works straight out of the box. No Intel nor MEI drivers installed... nor any updates or long hookup to the internet...
The same OS we could not get to work on Z87, no matter how hard we tried , no matter how many updates or time it was connected to the internet... weird