New Release Official 4.3 Update Samsung Galaxy S3 GT-I9300 How To Guide

Here comes another Android 4.3 software update for Samsung Galaxy S3 (GT-I9300) with firmware build numbers I9300XXUGMK6, that has recently released by Samsung. This is the continuation of the previously released 4.3 update I9300XXUGMJ9 that has been postponed due to some several issues. According to its official changelog, this update will bring more improvements to the Galaxy S3 I9300 devices. Some features are already found from the earlier released, including Galaxy Gear support and the new KNOX security apps.

Here’s what appears on Kies about the I9300XXUGMK6 4.3 Update.

Important Note:
According to the last part of the changelog that once you took the 4.3 update, it forbids you from downgrading back to the old software update due to security reason. So this means that it’s a one way straight ahead taking the 4.3 update and no returning back again to any old firmware like the 4.1.1 or 4.1.2 versions.

The UGMK6 update is now only available in select European countries but only British Galaxy S3 users are lucky enough to get this update on their unbranded or SIM free Galaxy S3 I9300 others are those with branded devices. All other Galaxy S3 I9300 users around the world who may have not seen this update yet, might still need to wait for a while since the rolled-out is in stages. This update is available through Samsung Kies and over-the-air (OTA software update). But for those advanced users who wants to update now, you might also like to grab the original I9300XXUGMK6 firmware below and update your device in no time without waiting this update from Kies to appear.

Stock Firmware I9300XXUGMK6: (Unbranded, Unlocked or SIM Free)
United Kingdom – I9300XXUGMK6_I9300OXAGMK6_BTU.zip Download – [link]
Austria – [link]
Baltic – [link]
Czech Republic – [link]
Denmark – [link]
France – [link]
Finland – [link]
Germany – [link]
Greece – [link]
Hungary – [link]
Italy – [link]
Israel – [link]
Luxembourg – [link]
Norway – [link]
Netherlands – [link]
Poland – [link]
Russia – [link]
Southeast Europe – [link]
Slovakia– [link]
Spain – [link]
Sweden – [link]
Switzerland - I9300XXUGML2_I9300AUTGML1_AUT.zip download
Turkey – [link]

Carrier Branded: (Vodafone)
Czech Republic– [link]
Hungary – [link]
Italy – [link]
Ireland – [link]
Germany – [link]
Greece – [link]
Netherlands – [link]
Portugal – [link]
Romania – [link]
Spain – [link]
United Kingdom – [link]

More Carriers: (Others are on I9300XXUGML2 4.3 firmware builds)
Austria (a1)– [link]
Austria (t-mobile) – [link]
Croatia (vipnet) – [link]
Croatia (o2) – [link]
Croatia (t-mobile) – [link]
Czech Republic (t-mobile) – [link]
Denmark (3) – [link]
France (sfr) – [link]
France (orange) – [link]
Germany (O2) – [link]
Germany (t-mobile) – [link]
Hungary (t-mobile) – [link]
Italy (3) – [link]
Macedonia (t-mobile) – [link]
The Netherlands (t-mobile) – [link]
Norway (telenor) – [link]
Portugal (optimus) – [link]
Poland (plus) – [link]
Poland (play) – [link]
Poland (t-mobile) – [link]
Romania (cosmote) – [link]
Slovenia (si.mobil) – [link]
Slovenia (mobitel) – [link]
Sweden (3) – [link]
Switzerland (swisscom) – [link
Ukraine (kyivstar) – [link]

Tools:
Odin3_v3.09 Download
GT-I9300 USB Driver Download

1) Extract or unzip the downloaded firmware or stock ROM so that you’ll get the Odin flashable tar file which is looks likely the same as the image below.
2) Run Odin Downloader v3.07 flasher program.
3) Load the binary file. Click on the PDA button then browse to the folder where you extracted the stock ROM. Like for example I used UK firmware so it goes like this “I9300XXUGMK6_I9300OXAGMK6_I9300XXUGMK6_HOME.tar.m d5″
4. Do Not check the Re-Partition checkbox. Mark check these checkboxes Auto Reboot and F-Reset Time.
5. Reboot the phone in download mode: To reboot the Galaxy S3 into download mode , you need to turn the power off. After it completely shut down, just press and hold the Volume Down key, Home button and the Power ON/OFF button simultaneously.

You should then prompted into a warning screen and asking you to press volume up if you want to continue or volume down to cancel, just simply press volume up to get into download mode. The download mode then displays an Android robot and say’s “Downloading.. Do not turn off target!!”
6. Connect the phone to PC when it’s in the Download Mode screen.
7. Hit the “START’ button.
10. Wait until a word “PASS’ appears.
11. Remove the phone from PC once completely reboots.
Optional: Perform factory reset to gain a fresher firmware installation, this is very useful to get rid of unwanted reboots and lag issues.
You may then confirm the newly installed Jelly Bean from your device:
Settings–>About Phone–>Software info or type *#1234# and see if it’s already I9300XXUGMK6 or I9300XXUGML2 4.3 Jelly Bean build

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