iCloud / iMessage / App Store / etc. fix for WiFi-only Hackintosh?

Hi,

I have a motherboard (Gigabyte X58 G1-Killer Assassin) which has an unsupported onboard Ethernet (Bigfoot Killer NIC), so I am instead using a WiFi adapter that I got off eBay that works :] However, running into the dreaded no iCloud / i Message / App Store, etc. not working at all.

I've already tried to generate a new Serial no in smbios.plist. What can I try next? I've been reading countless of threads but can't seem to find a solution to my specific issue. Hackintosh masters...

iCloud / iMessage / App Store / etc. fix for WiFi-only Hackintosh?