XDA member Chainfire has brought a simpler root tool for Samsung Galaxy S owners with JPx firmwares.

The new CF-Root kernel features:

–          Root

–          Superuser 2.3.6.1

–          Busybox 1.15.3 or 1.17.1 (if not mentioned in the filename it is 1.15.3)

–          “2e” recovery (can flash unsigned update.zip’s)

–          Integrated fix for ClockworkMod’s nandroid (2.5.0.4)

As it is just a kernel not a ROM, so it does not wipe anything from your Galaxy S.

Installation Instructions:

–          Flash CF-Root-JPx-vX.X.tar (Files here) as PDA in ODIN, without repartition.

–          Done..

–          Detailed Instructions:

• Unzip the attached CF-Root-JPx-vX.X.zip
• (USB) Disconnect your phone from your computer
• Start ODIN
• Click the PDA button, and select CF-Root-JPx-vX.X.tar
• Put your phone in download mode
• (USB) Connect the phone to your computer
• Make sure repartition is NOT checked
• Click the START button
• Wait for the phone to reboot
• Done (if it took you more than 30 seconds, you need practice!)

More details and original thread here.