Root I9300XXEMB5/BTU UK Samsung Galaxy S3 I9300 4.1.2 Jelly Bean Update with CF-Auto-Root

The Samsung Galaxy S3 I9300 has received another Android 4.1.2 Jelly Bean update in the UK with build number I9300XXEMB5. Those already updated to this build version, you can still use Chainfire’s CF-Root that works for Samsung Galaxy S3 Android 4.1.2 JB update.  This root method already works from previous releases like the XXEMB1 or XXEMB2.  Advance users already knew about this CF-Root thing but for those who hasn’t heard about it, make a careful research first before you touch your device.

I9300XXEMB1 I9300XXEMB2 Root

In addition, installing Chainfire Root on your Samsung Galaxy S3 can still receives official update from Kies and via OTA (Over the Air), So there is nothing to worry about getting any future updates. You can also easily unroot it in the future if you need to. Just flash or install back the original stock rom and you are ready to go.

NOTE: This root method only works if your Samsung Galaxy S3 is already updated to official Android 4.1.2 Jelly Bean update. Just always remember that rooting will void the warranty of your device. So, proceed at your own risks!

How to Root Galaxy S3 I9300XXEMB5 Android 4.1.2 Jelly Bean Update

  • Make sure that your phone is fully charge.
  • Back up all important files stored from the device.
  • Use Windows based computer or laptop, Odin will not work on MAC and LINUX.

Download Chainfire’s CF-Root for Samsung GT-I9300 Galaxy S3 – CF-ROOT (consider a donation to Chainfire for continued development)

Install the latest Samsung Galaxy S3 USB driverlink
Odin Flasher Tool for Galaxy S3 Odin3_v3.07. link

Step 1. Extract the downloaded so that you’ll get the CF-Auto-Root-m0-m0xx-gti9300.tar.md5 Odin flashable file. You can use Winzip, 7zip or any extracting tool you have in your computer.
Step 2. Run Odin3_v3.07.exe in your computer
– Make sure NOT TO CHECK this option “Re-Partition”. Leave  others checked.

Step 3. Click on the PDA button the browse and select the CF-Auto Root tar file.

PDA button: “CF-Auto-Root-m0-m0xx-gti9300.tar.md5

CF-Auto ROOT Samsung GT-I9300

Step 4. Set your phone in download mode (Turn off phone, then hold Volume Down+Home+Power button simultaneously) Then it ask you to press a Volume Up button to continue.

Samsung Galaxy S3 Download Mode

Step 5. Connect the phone to your computer via USB cable. You will then see an ID:COM number which is being highlighted in color blue and a word “Added!” in Odin, it indicates that your device is recognized with Odin. If you can’t see such indications, make sure to re-install the driver correctly and check your USB cable and your computer’s USB port for possible issues.

Step 6. Hit the “START” button to begin installing root on your Galaxy s3.

Step 7. Wait until it finishes flashing, you can see a word “PASS” once it’s successfully completes.
This process will only takes around 30 seconds to complete or until the phone completely reboots.

Done! remove the phone from computer connection.

NOTE: Sometimes the device does *not* boot into recovery mode and root your device. Just do the entire procedure again if this happens. If it still will not install root and such, make sure that in Odin “Auto Reboot” is not checked. Then after flashing, pull the battery, and boot with VolUp+Home+Power button to boot into recovery manually. This willstart the install process.

Fixing possible errors while installing root

Okay, I followed the instruction carefully above but this is what on Odin says:
Now it’s been an hour and nothing has happens.

CF-Root-SGS3-v6.4.tar.md5 is valid.
Checking MD5 finished Sucessfully..
Leave CS..
<ID:0/004> Odin v.3 engine (ID:4)..
<ID:0/004> File analysis..
<ID:0/004> Get PIT for mapping..
<ID:0/004> Firmware update start..
<ID:0/004> recovery.img

The flashing will take just around less than a minute or more.
If the above issues occurs,. Disconnect the phone from the USB cable, this time remove the phone’s battery after a few seconds and replace it back. Then just repeat the whole process again.

6 thoughts on “Root I9300XXEMB5/BTU UK Samsung Galaxy S3 I9300 4.1.2 Jelly Bean Update with CF-Auto-Root”

  1. “Back up all important files stored from the device.”

    What do you mean by this and how do I back them up? Do you mean files such as media, pics, apps, etc…or files that are necessary for the phone to work? I’m new to this and scared of bricking my device as I have 23 months left on the contract.


    1. Files that you stored from the phone’s memory contacts messages, pics, video etc.
      It’s only optional for safety just in-case something went wrong, but mostly this process will not wipe everything.

  2. I’m stuck on step three.

    I’m getting this in the message box in odin after I hit the start button and checked the correct boxes.

    Enter CS for MD5..
    Check MD5.. Do not unplug the cable..
    Please wait..
    CF-Auto-Root-m0-m0xx-gti9300.tar.md5 is valid.
    Checking MD5 finished Sucessfully..
    Leave CS..
    All threads completed. (succeed 0 / failed 0)

    It doesn’t say ‘PASS’ in the top left corner like your guide also. Am I supposed to plug the phone in while doing this? I don’t know where I’m going wrong.

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