Today I upgraded my daughter's S III mini from 4.1.1 to 4.1.2 on Vodafone Romania (stock original rom UNrooted).
The first thing I've seen was that the lockscreen doesn't have anymore the ripple effect. It has an old style unlock showing a lock.
I found that this is a Samsung decision here: http://forum.xda-developers.com/show....php?t=2119687
Now, the problem is that I would like to downgrade the rom back to previous 4.1.1.
Can you help me with some information about how to do-it on this UNrooted device?