Enable UMA use?

I just read up on how to enable UMA using a torch 9800 on T-Mobile USA..... As well as some doing this mod on their 9700 & 9780.... ...
Just wondering if this is possible when using a 9900 on rogers or fido?? Following the same steps as posted for enabling the feature in the 9800 forum? Where do I get the certs for rogers and fido? Am using a non fido/rogers 9900 which happens to be factory unlocked and unbranded.

Thanks......

Posted from my CrackBerry at wapforums.crackberry.com

This method has already been tested, and it doesn't work on OS7 devices.

You'll have to wait for wifi calling support in the forthcoming OS7.1

Posted from my CrackBerry at wapforums.crackberry.com

I am trying uma calling with the 7.1.074 software. The phone is on Rogers, the wifi is Eastlink. It isn't working. i am assuming I need my internet/wifi to be supplied by Rogers for UMA to work.