Firstly I have to say that I couldn't test the update on a test instance due to hosting issues. Since this is my only chance to update and former updates gone smoothly I decided to give it a try after making backups.
Yeah, my problem is that the upgrade system keeps freezing.
Step: Rebuilding Templates (just 2 installed)...
Tried to restart it with no success by refreshing the page and re-start upgrade.
Any ways to help me out?