How to Update Samsung Galaxy S3 i9300 to XXDLI4 Android 4.1 Jelly Bean

In our days everyone has heard of the Samsung Galaxy S III, which enjoys great popularity among the latest generation smart phones, lately there have been many comparisons with the iPhone 5, fortunately for giant Korean the thinks are favorable because it sells very well all over the world.
The only thing where that is presently blamed for Samsung Galaxy S3 is the operating system currently based on Android 4.0.4 ICS.
As soon as he was released maker made a promise to provide a Jelly Bean as Samsung Galaxy S3 update as soon as possible. Probably, from sources that we have, this update should be available in October of this year. Until then, Samsung has elapsed, in good faith or not, some Jelly Bean updates ROMs for Samsung Galaxy S III.
A recent version seems to be i9300XXDLI4, which until now seems the most stable the fewest bugs so far, as I said is not an official version and install i9300XXDLI4 ROM can void the warranty.
Next we will focus to show you some new improvements in what can this i9300XXDLI4 leaked ROM can to do in plus:
Wi-Fi reception is improved
RAM Optimizations
Lighting problems were solved
A faster battery charging
App Drawer much smoother
Apps open really fast
Very Fast and Smooth
All major shortcomings of earlier versions seem to have resolved in this release i9300XXDLI4 stable ROM, but hopefully not too much, which is a pre-release ROM version and some minor bugs may exist.
As we Firmware details:
Android version : 4.1.1-JRO03C-Jelly Bean.
PDA: I9300XXDLI4
CCS: I9300OXADLI4
MODEM: I9300XXDLI4
Change list: 140034
Build Date: 7th September 2012
You can see in the screenshots, to finding i9300XXDLI4 ROM like on these pictures to be sure before start flashing procedure:

Samsung Galaxy S III Jelly Bean Leaked ROM

• The first step is to download firmware from sammobile link
• Check it has downloaded successfully.
• Unzip the archive in a convenient place for the next step.
• In this step, run Odin 3.04 program found in the extracted files.
• When you have done this you need to restart your Galaxy S3 phone in download mode.
• To do this press the power button and hold it until the loading screen appears first: Home, Volume Down button and power button.
• Once yours Galaxy S III phone has successfully rebooted in the download mode, we need now to connect your smartphone to the computer using original data cable.
• Now check and see if in the Odin program a yellow sign appeared in the top left corner.
• Now you need to click on the PDA button in Odin and select the file name.
  I9300XXDLI4_I9300OXADLI4_I9300XXDLI4_HOME.tar.md5, on the folder where you extracted archive downloaded earlier.
• Next up please make sure that none of the ticks on the buttons in Odin have been messed with and also make sure that the repartition button is NOT ticked.
• In the final stage, you have to press the power button and be patient as the program does its job.
• Do not unplug the device during the process in any way, just waiting for your Galaxy S III phone will reboot and the Odin program will tell is done.
  Congratulations! This was the update procedure.