Wishful thinking. You cannot upgrade a Win phone 7 device to windows phone 8, that's why MSFT made Win 7.8, makes you feel like you have win 8.
But there is a stark difference.

Sent from Lumia 920

From: Lawrence Kago
Sent: 2/5/2013 6:26 PM
To: skunkworks@lists.my.co.ke
Subject: [Skunkworks] Windows phone

HTC 7 pro T7576
Am adviced to upgrade the above to windows 8,would this make installing applications easier?or what difference would it make?

1.� I still can't do Skype.
2. I can't access the storage,is I download stuff n I can't track them...

HTC guru assist pls.

Sent from my Windows Phone