I9100XXLSJ_I9100XXLS6 (Galaxy S II GT I9100 Jelly Bean)

Buttery Smooth Performance & Great Stability (Thanks to Project Butter)
- New TouchWiz Nature UX (Same UI as of the Galaxy S III and Galaxy Note II)
- Samsung’s Cloud services
- Direct Call, Smart Stay and Pop-up Play Features
- New Widgets From the Galaxy S III
- 2 Home screen modes
- New Notifications bar
- Google Now

Firmware Details:
Android Version: 4.1.2 – JZO54K (Jelly Bean)
PDA: I9100XXLSJ
CSC: I9100OXXLS1
MODEM: I9100XXLS6
Changelist: 462349
Build Date: 6th November 2012

Flashing Instructions:
- Open Odin 3.04 (already included in the firmware package)
- Restart phone in download mode (Home+power+vol down)
- Connect phone and wait until you get a yellow sign in Odin
- Add CODE_I9100XXLSJ.tar to PDA
- Add MODEM_I9100XXLS6.tar to PHONE
- Add CSC_HOME_OXX_I9100OXXLS1.tar to CSC
- Make sure re-partition NOT ticked
- Start flash, sit back and wait a few minutes.