Warning!
This tutorial is only for Galaxy S3 I9300. Don’t try this guide on any other Android device. Also, we are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. However, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure
You can now update your Samsung Galaxy S3 GT-I9300 to latest and customized Android 4.4.2 KitKat. Google recently introduced Android 4.4.2 KitKat a many Nexus models but that build is not much customized. CyanogenMod team recently introduced Android 4.4.2 KitKat based CM11 build for Galaxy S3 I9300. You can download and install custom firmware CM11 on your Galaxy S3 I9300. Since, Galaxy S3 I9300 is capable enough to run Android 4.4.2 KitKat smoothly, CM11 going to be a great experience for you. With nightly build you will receive update daily and bugs are fixed faster as well as new feature introduced regularly. To learn how to flash this ROM, continue reading this guide to know how to install Android 4.4.2 KitKat based CM11 custom ROM on Galaxy S3 I9300.
As said already, this is a test build and you should expect some bugs in it. All bugs and issues expected to be fixed as development progress towards a better build.
Pre Requisites:
1. Backup your device data.
2. Make sure your device have at least 60% battery power.
3. You already have USB Driver Installed for Galaxy S3 I9300 in your PC. [Download USB Drivers]
4. Make sure USB Debugging is enabled otherwise you won’t able to transfer file between PC and Galaxy S3 I9300.
5. Your device have latest ClockworkMod Recovery Installed. [Guide]
If you done everything that we mentioned above then you are ready to follow step-by-step guide on how to install Android 4.4.2 KitKat based CM11 ROM on Galaxy S3 I9300.
File Required(Download by clicking on it)
CM11 For Galaxy S3 I9300 [Filename: cm-11-20131216-NIGHTLY-i9300.zip]
Google Apps for 4.4 [Filename: gapps-kk-20131119.zip]
How to Install Android 4.4.2 KitKat based CM11 ROM on Galaxy S3 I9300
Connect your device to PC using USB cable and then copy downloaded files to the SD card of your device. Important: Don’t extract any files.
Disconnect USB and then turn off your Galaxy S3 I9300.
Now, boot into recovery mode. To do so, press and hold Volume Up, Home and Power button together until Samsung logo flash twice and then leave the button. You should see recovery menu soon. In recovery use Volume Keys to navigate between option and Power button to select an option. Alternatively try this: Recovery Mode without Key Combination.
Perform a Nandroid backup of your existing ROM that you can restore later if this new ROM not work or you want to go back into your previous ROM. To perform a backup, select Backup and Restore, then on the next screen, select Backup again. Go back to main recovery menu after backup is complete.
Now, perform data wiping task. To do so, select wipe data/factory reset, then select Yes on next screen to confirm your action. Wait few minutes till the data wipe is complete. Now come back to CWM recovery main menu. Select wipe cache partition and after wiping process done, select Wipe Dalvik Cache under advance option to perform Dalvik cache wiping.
Select install zip from sdcard, then select choose zip from sdcard. Now, locate the CM11 Zip file that you copied earlier in Step 1 and select it by pressing Power button. Confirm installation by selecting Yes – Install _____.zip on the next screen. The ROM installation will begin.
Once the ROM installation process end, repeat the step 6 but choose the gapps-kk-20131119.zip file instead of ROM zip to install the Google apps package.
When installation is completed, go back to the main recovery menu and select reboot system now to reboot your Galaxy S3 I9300 and boot up into Android 4.4.2 KitKat ROM CM11.
Congrats! Android 4.4.2 KitKat firmware based custom ROM CM11 is now installed and running on your Galaxy S3 I9300
Returning to Previous ROM: To go back to your previous ROM, boot into recovery, select backup and restore then restore your previous ROM by selecting it from the list.
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