First the installation halted on starting the services.. after some time we killed it..
Then all services started except for owa
Outlook Web App failed to load the following theme folder: E:\Program Files\Microsoft\Exchange Server\V14\ClientAccess\owa\14.1.255.0\themes\base
The following files are missing: premium.css, gradienth.png, gradientv.png, csssprites.css, csssprites.png, csssprites2.css, csssprites2.png
I had to manually copy the old owa from sp1 version into the updated folder and deleted owa with powershell and created it with powershell.
It is just for mentioning this.