I've upgraded my firmware via Kies to 4.1.1 (I90300XXDLID). When I went on internet I couldn't play any videos from websites. I found that Adobe is no supporting any more flash player to version above 4.0. Also some codes not working like this one wchich checking simlock status. I am bit dissapointed and want go back to previous version. How can I downgrade my firmware?
I've found a solution for how to run flash playeron 4.1.1 firmware on http://forum.xda-developers.com/show....php?t=1774336.