Yesterday, hackers from xda-developers Rooted Samsung Galaxy S III (S3) before its Release and now the Official Stock Rom for the device has been leaked. It is an unbranded firmware of Android 4.0.4 with Samsung TouchWiz interface. This firmware will be important for two reasons. First it will help the users of SGS3 in future if they want to restore back to the Stock Rom and secondly, it will be the base for the developers to port new interface, tweaks and gestures to make custom ROMS for the device.
Base Firmware: I9300XXALE8 (4.0.4)
Build Date: 13th May 2012
Change List: 554452
How To Install Stock Rom To Samsung Galaxy S3:
Download and Extract the firmware.
Put your SGS3 to Recovery (Home + Volume up + Power).
Now select Wipe Data/Factory reset than Wipe Cache.
Now take out your battery and start your device in Download MODE (Home + Volume Down + Power).
Click on PDA & select *.tar.md5 and click on START!