cm11 kitkat return to sony version

[babyshark]

 hi i have xperio go with cm11 kitkat 4.4.2 but i see it have some bugs and nothing new in it so i like to rebilf my phone to origenal sony company virion so any help how to returned back   thx  Michel.

[Uliwooly]

How to manually update, downgrade, root 2012 Xperias

http://talk.sonymobile.com/thread/41609