Samsung has rolled out yet another Android 4.3 Jelly Bean based maintenance and bug-fix update for its global variant of Galaxy S3, with a new stock firmware build I9300XXUGML3. This build is a follow-up release to I9300XXUGML2 that arrived just a few days back, following the outcry of users over inherent bug issues with latest Jelly Bean updates.

The new build I9300XXUGML3 is now available as an Over-The-Air (OTA) update as well as through Samsung KIES in several countries including Indonesia, Malaysia, Philippines, Singapore, Vietnam and Thailand.

Update Galaxy S3 to Android 4.3 I9300XXUGML3 Official Firmware [GUIDE]

Android 4.3 I9300XXUGML3 Firmware Details

Version: Android 4.3
Build date: Dec 26, 2013

The Android 4.3 I9300XXUGML3 update can be installed on any unlocked Galaxy S3 GT-I9300, regardless of the country and region. Those who missed the OTA update notification and those who cannot access the latest update over KIES for some reason, can install the same manually using our step-by-step guide below.

IBTimes UK reminds its readers that it will not be held liable for any damage to device during or after firmware installation. Users are advised to proceed at their own risk.


  1. Install necessary USB Drivers for Galaxy S3 on the computer.
  2. USB Debugging Mode should be enabled on the phone by navigating to Settings >> Developer Options.
  3. Back up your important data to avoid potential data loss during firmware installation.
  4. Ensure the phone is factory unlocked (not locked to any specific carrier).
  5. Verify Galaxy S3 has at least 80 percent battery charge.
  6. The I9300XXUGML3 Android 4.3 firmware is compatible with Galaxy S3 GT-I9300 only. Do not attempt installing it on incorrect variants as it may brick the device. Verify the model number of the Galaxy S3 by navigating to Settings >> About Phone.

Downloads Required

1. Android 4.3 XXUGML3 Jelly Bean Firmware for Galaxy S3 I9300
2. Odin 3.07 (Alternate Link)

Steps to Update Galaxy S3 with Android 4.3 I9300XXUGML3 Jelly Bean Firmware

Step 1: Extract Android 4.3 firmware zip file via WinRAR/7-Zip or WinZip to obtain a .tar.md5 file and some other optional files.
Step 2: Next Odin zip file should be extracted to get Odin3 v3.07.exe along with few other files.
Step 3: Power off the Galaxy S3 and boot the device into Download Mode. To do so, press and hold Volume Down, Home and Power buttons together until a construction Android robot icon with a warning triangle appears on screen. Then keep tapping Volume Up button to progress into Download Mode.
Step 5: Launch Odin on computer as an Administrator.
Step 6: Now connect Galaxy S3 to computer with USB cable in Download Mode. When Odin detects the device and a pop-up message reading "Added!" appears on screen, the ID: COM box will turn light blue with the COM port number.
Note: If the Added message fails to appear, then try re-installing USB drivers or changing the port on computer.

Step 7: Select the following files in Odin from extracted I9300XXUGML3 firmware folder:

  • Tap PDA button and choose the .tar.md5 file.
  • Hit Phone button and select the file named MODEM.
  • Tap CSC button and choose the file named CSC.
  • Click PIT button and choose the .pit file.

NOTE: Ignore the last three files (MODEM, CSC and .pit) if they are not found.

Step 8: In Odin, select Auto Reboot and F. Reset Time options. But, the Re-Partition option must be checked only if you used the .pit file in previous step.
Step 9: After ensuring that Step 7 and Step 8 are done correctly, hit the Start button in Odin to begin installing the firmware.
Step 10: After the firmware is installed, a PASS message with green background appears in the left-most box at the top of Odin. Galaxy S3 will then reboot to the Home screen. It is now safe to disconnect the USB cable and remove the phone from computer.

Galaxy S3 I9300 is now running I9300XXUGML3 Android 4.3 Jelly Bean firmware. Head over to Settings >> About Phone to verify the firmware installed on the device.

Note: If Galaxy S3 I9300 is stuck at boot animation after Step 10 then boot into recovery mode (press and hold the Volume Up and Power buttons together) and perform Wipe data/Factory Reset and Wipe Cache Partition task before choosing Reboot System Now option. In recovery mode use Volume keys to navigate between options and Power key to select the option. Please note that performing data wipe task will erase your device's internal memory and not external SD card data.

[Source: Honai of Android]