Install Android 4.2.1 On Your Galaxy S3 With Root and Security Kernel (I9300XXUFMB3)

Very good news for all Samsung fans, especially for users who have a Galaxy S3 GT-I9300, and has leaked the first firmware development Android 4.2.1┬áJelly Bean for Samsung’s current flagship, which can be installed manually by Odin.

New firmware development of the first filtering Android 4.2.1 (I9300XXUFMB3) for the Galaxy S 3:

  • Android 4.2.1 – JOP40D
  • Improved Ripple effect on Lockscreen
  • New Android 4.2.1 lock screen with widgets
  • Daydream (Settings ? Display)
  • New additions and improvements to the notification center
  • Notifications are more actionable
  • Voice commands (which control different functions of your smartphone with voice)


This firmware development is not official, but it has been tested by people of XDA SamMobile and older who do not report bugs and can be installed without problems on your smartphone, but keep in mind that being a firmware development that increases updates the counter (it can drop to zero by Triangle Away app), and modify the state of the device and brings Modified modem so if you will install the modem you currently have on your device.

Firmware I9300XXUFMB3 details

  • Android Version: 4.2.1 – JOP40D (Jelly Bean)
  • PDA: I9300XXUFMB3
  • CSC: I9300OJKFMB3
  • MODEM: N / A
  • Region: Middle East
  • Carrier: Unbranded
  • Changelist: 171637
  • Build Date: 19th February 2013
  • Download:

Android 4.2.1 Galaxy S3 Install Android 4.2.1 On Your Galaxy S3 With Root and Security Kernel (I9300XXUFMB3)

How to install Android 4.1.1 firmware on your Galaxy S3:

Run Odin3 v3.04.

Reboot your Galaxy S3 download mode (Home + power + vol down)

Connect your smartphone to your PC and Odin will turn a yellow or blue.

Brand PDA field and places the file .Tar.md5 downloaded firmware.

You must make sure that the field Re-Partition is unchecked.

Star button and wait for it to install the new firmware on your Galaxy Jelly Bean S3.

Reboot and you will have Android 4.1.2 on your Galaxy S3.

If your smartphone does not restart normally after about 5 to 10 minutes and stays in the logo of Samsung, you must remove the battery from your smartphone, replacing it and turn it into recovery mode: Vol + + Home + Power and do a wipe data and wipe cache, this process will erase your data on your device.

How to install a kernel safe and rooting any firmware Android 4.1.2 Jelly Bean:

Just know how to install a secure kernel root update this note.

So while you can also use the same firmware I9300XXUFMB3 but since Deodexed with root, busybox and init.d support, is installed in the same way that filtering by Odin:

Details I9300XXUFMB3 Deodexed firmware:

  • All Apps are Deodexed
  • Root with SuperSU
  • Fully Zipaligned
  • BusyBoxed
  • Insecure Kernel
  • Init.d Support

Download | Deodexed I9300XXUFMB3.

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