Last week, Samsung has started rolling out the latest Gingerbread Value pack (Android 4.0-like feature) update for Galaxy S users. Although this update is based on version 2.3 of Android, it contains a lot of Android 4.0 features that were released for Samsung Galaxy S2. It has been released officially in Korea and the update will be delivered by the Samsung Kies application. Or, if you want to taste this Android Value Pack on your Galaxy S now, then you can download the XXJW4 Value Pack firmware and manually setup on your Galaxy S phone.
Then if you want to get Root access your Galaxy S Phones with this latest XXJW4 Value Pack firmware, here is the tutorial:
Step 1: Set Galaxy S into USB Debugging, Settings –>Applications ->then Development.
Step 2: Download CF-Root kernel (Link) and Extract the files in the zip file (you will get CF-Root-XX_OXA_JW4-v4.4-CWM3RFS.tar ) to your PC.
Step 3: Turn Off Galaxy S. Then turn Galaxy S into Download Mode by press the Volume Down + Volume Up + Power button until warning icon appear on the screen. Then press the Volume Up button to enter Downloading Mode.
Step 5: Open ODIN (Download Odin) , and then connect your Galaxy S to your PC via USB. Yellow bar in the Odin COM:ID column indicate that Odin detect your phone. (If Odin not detect your Phones, then you can refer here (Link) for how to solve)
Step 6: Click on the ‘PDA’ button, and select the .tar file.
Step 7: Press the Start button to start flash the kernal CF-Root-XX_OXA_JW4-v4.4-CWM3RFS.tar to Galaxy S.