JB PDA file 1 + ODIN download karaganna.
JB file1 extract karaganna ( .tar.gz format1 tiyenna ona )
http://www.hotfile.com/dl/210498344/4e8eeb0/I9100XWLSS_I9100OXXLS9_DNF.zip.html
http://forum.xda-developers.com/attachment.php?attachmentid=1168421&d=1341114315
Install KIES app on PC ( for USB drivers )
Phone eke Settings>Developer options>Usb debugging Tick karanna
Phone eka power off karanna.. Vibrate wenakan inna..
Power Butten + Menu Button + Volume down press karan inna boot wenakan..
etanin Odin mode1ta load wenawa. eta passe volume up press karala continue karanna..
Usb1n Connect karanna
Odin Open karanna
ID:COM kiyana box1k blue color wei phone 1 detect karala nam..
eta passe download karapu firmware file1 PDA kiyana thenata select karanna..
Make sure only the Auto Reboot and F.Reset Time check boxes are ticked!
then Start!
It will take abt 4,5 mins..
This will flash Official JB machan.. & Personally I prefer ODIN method than KIES..