Check out this guide on how to Install Android 4.4.4 Kitkat on Samsung Galaxy S3 with the model number I9300.
The Samsung Galaxy S3 has been more than two years old and was launched in May, 2012. It originally ran on Android 4.0 Ice Cream Sandwich and can be updated to Android 4.2 Jelly Bean. Currently Samsung is still rolling out its Android 4.4.4 update to its various handsets, but the Korean tech giant had stopped its update on the S3 and users are stuck on the Jelly Bean.
Before installing this custom ROM you must take note that:
It is advisable that the battery level is at least 80 percent. Samsung Galaxy S3 users also need to make sure that the appropriate USB drivers are already installed on the computer so the Android device can easily connect to the PC.
Furthermore, creating a backup for all the files installed on the smartphone is necessary. ClockWorkMod is one of the most recommended recovery tools for making a backup.
Note: Install at your own risk.
How to install 4.4.4 Android C11 M12 Cyanogen Custom ROM from International Business Times.
Step 1: Download CyanogenMod Android v4.4.4 KitKat CM11 M12 custom firmware (HERE) and Google Apps (HERE) in to your PC.
Step 2: Connect Samsung Galaxy S3 I9300 to PC via USB cord.
Step 3: Place the Android 4.4.4 KitKat zip file into the phone's SD card memory. [Note: Users are advised to paste the .zip file in SD card root, not in any other folder].
[Note: Before installing the custom software, be sure that the device must have been rooted and has installed ClockworkMod Recovery tool.]
Step 4: Turn off the device and disconnect from the PC.
Step 5: Perform the regular Recovery Mode sortie by press holding 'Volume (up)', 'Home' and 'Power' buttons.
Step 6: After entering the Recovery Mode, clear the phone memory, by choosing the 'wipe data/factory reset' option.
[Note: Use 'Volume' keys to navigate and 'Power' button to select options, while operating under Recovery Mode].
Step 7: Now, clear the cache memory by selecting the 'wipe cache partition.'
Step 8: Then go back to ClockworkMod recovery, and select 'advanced' and tap 'wipe dalvik cache.' [Note: This step is optional, but many recommend this procedure so that the user will not face boot loops or any other errors in the middle of custom ROM installation].
Step 9: Again come back to the main recovery screen and tap 'install zip from SD card.'
Step 10: Then tap 'choose zip from sdcard' and go to Android 4.4.4 ROM .zip file in SD card and enter the installation process. [Note: use 'Volume' keys to navigate and 'Power' button to select options]
Step 11: Once done with the installation process, navigate to '+++++Go Back+++++' and re-start the device by opting 'reboot system now' seen in the recovery menu.
After carefull following the steps your Samsung Galaxy S3 I9300 will take a few minutes to boot and will be running on CyanogenMOD Android Kitkat 4.4.4 CM11 M12.
