This is a small update to my previous post on how to update your HTC Mazaa to the latest build of Windows Phone 7.x http://sviluppomobile.blogspot.it/2013/02/update-htc-mazaa-to-windows-phone-78.html . You can now update to version 7.10.8862.144 of the OS that seems to fix the live tiles issues.
The steps you will have to add:
7.10.8858.136 - 7.10.8860.142
7.10.8860.142 - 7.10.8862.144