All the info in my post is scattered trough this forum, I'm only putting it in one place. All the credits and thanks to the guys who made this possible.
ONLY ON STOCK NO MODIFIED KERNEL OR RECOVERY
Use flashtool to flash 14.1.B.1.532,
repository by hamdogg: http://forum.xda-developers.com/show....php?t=2453921 Flashtool download and guide by krabappel 2548: http://forum.xda-developers.com/show....php?t=2428319
vroot download and guide by bASKOU: http://forum.xda-developers.com/show...32&postcount=3
Install Voodoo OTA RootKeeper: https://play.google.com/store/apps/d....otarootkeeper
Update the build.prop with German CDA Code
Guide by bASKOU: http://forum.xda-developers.com/show...53&postcount=5
ALSO CHANGE "ro.somc.customerid" SET IT TO 436
ALSO CHANGE "ro.semc.version.cust_revision=" SET IT TO R11A
Reboot your device
Check voodoo if backup is still present
If present, go to software update to install OTA.
When followed this step by step you're on the new firmware with root.
And as usual, everything at your own risk.