Kde 4.12 downgrade to 4.11

I want to dowgrade.
( i have upgrade like here:http://www.muktware.com/2013/12/install-kde-4-12-software-compilation-opensuse-13-1/17881)
The problems is the steam and anomaly 2. It is freeze.
http://www.youtube.com/watch?v=-3Z-wvyJMtc&feature=youtu.be
[http://www.youtube.com/watch?v=s9En536YBTo&feature=youtu.be

How can i do?](http://www.youtube.com/watch?v=s9En536YBTo&feature=youtu.be)

Change the kde repos to 411 version/s

Use the switcher

Ok. I add from here:https://en.opensuse.org/SDB:KDE_repositories#Previous_KDE_SC_releases
I installed some stuff but the kde is still 4.12

You should have edited to 4.12 repo’s URL to say 411 instead, that would have been enough.
So now remove the 412 repo.
And if you have the KDE:Extra repo as well, change that to the KR411 version accordingly.

Then select the KR411 repo in YaST->Software Management->View and click on “Switch system packages to the versions in this repository” above the package list.
See here:
http://en.opensuse.org/SDB:Vendor_change_update#Full_repository_Vendor_change