Kit Kat Update.
i have updated to the official kitkat for i9505 german firmware, after a full wipe. when i try to turn on wifi a security notice appears that some action is blocked.. means i cant turn on wifi.. pls help
can i go back to 4.3 MK9 firmware
Can you go into settings, more, and possibly post a screen shot of the about device information. That would be helpful to resolving your issue. Next, what exactly did you do for the "full wipe" and what recovery are you using. With TWRP this is what I like to do before updating from a root to a new rom:
go into recovery
go to WIPE
Go to ADVANCED Select Davlik cache, System, Data, Internal Storage, Cache and SWIPE to Wipe 3x
Go back one screen and select format' data ... type "YES" and hit "GO" 3x
Go back one screen and Swipe to FACTORY RESET 3x
Go Back to main menu and Select Reboot... Select Recovery
After phone reboots... INSTALL ROM
This process usually gets rid of most problems and should correct your wifi issue as it makes no sense why this feature would be block while you are able to use data (are you). Hope this helps.
Before I can answer the going back question i really need to know more about what you did to get where you are.
