How To Install Android 4.4 KitKat On Galaxy S3 I9305 via SlimKat Unofficial

Android 4.4 KitKat is a new craze among Android fan boys after it rolled out few days back. Google released Nexus 5 with Android 4.4 KitKat and since then all Android device owner with capable device want to try it out. We already covered Android 4.4 KitKat for various device. Today we found an unofficial SlimKat build for Samsung Galaxy S3 LTE GT-I9305. If you don’t know then SlimKat builds are based on Android 4.4 KitKat. The ROM comes in very minimal sized but packed with various customization that you surely love. Sooner or later you surely get Android 4.4 KitKat from manufacturer but if you want something more customized then continue reading this guide to learn how to install Android 4.4 KitKat based SlimKat custom ROM on Galaxy S3 I9305.

Some of the cool Android 4.4 KitKat features that you will enjoy is Screen Recording, Tap to Pay (Google Wallet for everyone), NFC emulation for non nfc devices, 14% less memory usage, cloud printing from Gallery, Google Home is the new Launcher, Core System Processes Trimmed, apps are efficient and responsive on all devices, the all new 'procstats tool details' memory use, Full-screen Immersive mode, seamless change in resolution during media playback, Phone dialer got local business detection, redesigned Quickoffice and many more. 

Slim ROM Features:

Please note, this is an alpha build and you should expect some bugs in it. All bugs and issues expected to be fixed as development progress towards a better build.

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This tutorial is only for Galaxy S3 I9305. 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.  

Pre Requisites:

1. Backup your device data. You can follow our ultimate backup guide.

2.  Make sure your device have at least 60% battery power. You can install an app like Battery Notifier BT Free on your Android device to check it easily.

3. You already have USB Driver Installed for Galaxy S3 I9305 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 I9305. [Guide].

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 KitKat based SlimKat ROM on Galaxy S3 I9305.

File Required(Download by clicking on it)

  1. SlimKat Android 4.4 KitKat ROM For Galaxy S3 I9305 
  2. Google Apps [Filename:]

How to Install Android 4.4 KitKat based SlimKat ROM on Galaxy S3 I9305

  1. 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.
  2. Disconnect USB and then turn off your Galaxy S3 I9305.
  3. 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.
  4. 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.
  5. 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.
  6. Select install zip from sdcard, then select choose zip from sdcard. Now, locate the SlimKat ZIP file that you copied earlier in Step 1 and select it by pressing Power button. Confirm installation by selecting Yes – Install on the next screen. The ROM installation will begin.
  7. Once the ROM installation process end, repeat the step 6 but choose the file instead of ROM zip to install the Google apps package.
  8. When installation is completed, go back to the main recovery menu and select reboot system now to reboot your Galaxy S3 I9305 and boot up into rooted Android 4.4 KitKat ROM SlimKat
  9. 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.

Congrats! Android 4.4 KitKat firmware based custom ROM SlimKat is now installed and running on your Galaxy S3 I9305. [source]