It won't help you. He's mis-interpreting what he did. His comment: "Offline Activation from Pro to WMC (No watermark or phone in required!)" is misleading. Offline Activation IS phone activation.
Yes, When prompted for key just use one of the global install key ie XHQ8N or XKY4K then do the change key wth your legit key to activate..DP
@murphy78 "Offline" has dual meaning , yes can be phone because it would Force the phone prompt but also in my case I meant "No Internet Connection" without having to do a phone in.. @cuesporttech If you get Success! after doing slmgr.vbs - ipk You don't need to do steps 8-11! just logoff and back on or reboot then connect to net and should say "validated" if done right.