The non-LTE variant of the Samsung Galaxy S3 has received its own build of CyanogenMod 11 M8 Snapshot. This is the only stable CM 11 build that's based on Android 4.4.2 KitKat.
CyanogenMod 11 M8 Snapshot is the full name of this release and you will get the same stock Android options as in the Android 4.4.4 KitKat builds present on Nexus 4 and 5, as well as getting multiple extra elements designed by the CM team. Such changes include: heads up notifications, new Trebuchet features and functions, improved Settings menu for an easier access to customization options, and more. If you want to learn more about this release then you can read our news article here or check the CyanogenMod blog page here.
Before starting the installation of CM 11 M8 Android 4.4.4 on your smartphone you should first read the preparation info below:
- use this post only with the International variant of Samsung Galaxy S3 model number I9300.
- do not attempt to update any other Android device with the files that you will find in this post.
- check the model number of your phone under Settings> About Device.
- in order to be able to flash this new ROM on your phone, then you will first have to have a rooted device with a custom Recovery installed on it.
- during the installation process you will have to apply a few extra steps: the NANDROID ROM Backup creation and the 'Factory Reset'.
- don't skip any of these steps.
- the 'factory reset' removes all data from the system partition, but it leaves the internal and external storage intact.
- NANDROID ROM Backup creates a full restore point for your S3, one that you can use in case the new ROM doesn't boot in normal mode.
- in case you wish to save some data from installed apps, SMS text messages or other files, then you should use the Helium tool for Android.
- also, make sure to sync your Contacts info with your default Gmail account.
- use this guide only if you're an advanced Android user, do not try to use this tutorial if you don't want to tinker with your Galaxy S3 operating system.
- note that we cannot be blamed in case you brick the phone, nor in case you end up losing any sensible data.
- check the Galaxy S3 battery charge level and make sure that it is over 50%, this will prevent it from switching off in the middle of the installation process.
- read the whole guide, do not skip any steps and use the comments field if you need any extra help.
Since you've read all of the above you can now continue to the interesting part of this post.
Install CM 11 M8 Android 4.4.4 ROM for Samsung Galaxy S3:
- Download the CM M8 Snapshot zip file from here.
- Download Gapps for Android 4.4.x custom ROMs from here.
- Connect the phone to your computer and move both zip files to its internal storage.
- if you've used your Galaxy S3 to download the files directly, then you can skip this step.
- do not extract the contents of the zip.
- Now you have to boot your Samsung Galaxy S3 in Recovery Mode.
- both CWM and TWRP Recovery are supported by this guide.
- in fact, any custom Recovery you use should be able to flash this new custom ROM as long as it is updated to its latest version.
- Create a full NANDROID ROM Backup:
- CWM: select 'backup and restore', name the file. Confirm.
- TWRP: press Backup, swipe to start the process.
- Apply the 'Factory Reset' of your Galaxy S3 already installed ROM:
- CWM: select 'wipe data/ factory reset', confirm.
- TWRP: press Wipe. Swipe to start factory reset.
- Start the installation of CM 11 M8 Android 4.4.4 ROM on your Galaxy S3:
- CWM: select the 'install zip from sdcard' option, then select 'choose zip from sdcard'.
- TWRP: press Install.
- Find the location of the CM 11 M8 Snapshot zip file. Load it in Recovery and then simply confirm the installation.
- wait several minutes before the ROM is installed with success.
- Next, use the same options as in step 7 and install Gapps zip, too.
- After all files are flashed you should get back to the main custom Recovery screen.
- Reboot your phone in normal mode.
- note that the first boot process takes a while to complete which is why you shouldn't press any buttons until your see the CM 11 M8 home screen.
- Use your Google or CyanogenMod account in order to take control over your device once again.
I hope that you've managed to complete the installation of CM 11 M8 Android 4.4.4 ROM for your Galaxy S3.
Note that in case your phone fails to install the ROM you might be forced to try and repeat the guide more than once. Make sure not to skip any steps and apply the step 6 actions in order to factory reset your phone. Additionally you can opt to apply the 'format /system' from your custom Recovery's more advanced options.
For extra help use the comments field below.