Samsung Galaxy S3
Samsung Galaxy S3 (Credit: Vinith Devdas via Wikimedia Commons under Creative Commons Attribution-Share Alike 3.0 Unported license).Vinith Devdas via Wikimedia C

Popular custom mobile firmware developers CyanogenMod team has released the new Android v4.4.4 KitKat CM11 M11 to Samsung's 2012 flagship smartphone Galaxy S3 (I9300).

Early in the year, Samsung abandoned the software service to the Galaxy S3 (with Exynos chipset) international 3G variant due to lack of RAM capacity, but fret not, there are numerous custom ROMs in the internet, which come with sleek customisation and performance-enhancing tweaks. Among them, team CyanogenMod is one of the most popular custom mobile software developers.

The new CM11 M11 custom ROM is based on the AOSP (Android Open Source Project) v4.4.4 KitKat OS and is said to bring customisation options to boost device performance, new visual interface, easy access to key apps and loads of personalisation options such as-

  • Fix signal strength showing '2147483647′ on certain devices
  • Frameworks & Core Apps: CAF and other upstream updates
  • Lockscreen: Do not play sounds while a phone call is active & MSIM updates
  • Frameworks: Add base & MSIM APIs for SEEK (Secure Element Evaluation Kit) support
  • Frameworks: Fix volume button changing two 'steps' per click
  • Frameworks: Add 'Screen Off' action for double-tap/long-press configuration options
  • Show devices connected to your WiFi (tethering) Hotspot
  • Fix bug related to 'switch to last app' action while in Recent view
  • Fix Navigation Bar arrow keys in RTL locales
  • Translations updates from CyanogenMod CrowdIn team
  • Adjustments to 'Glove Mode' (High Touch Sensitivity)
  • APN Updates for various regions
  • Camera: Add support for all available Slow Shutter speeds (hardware dependent); Improve shutter button
  • Dialer/InCallUI: Fix smartcover always showing answer fragment
  • Various security updates
  • General bug fixes
  • Performance tweaks and many more improvements to enhance user-experience

Prerequisites (things to remember before installing Custom ROM):

  • Though installing custom ROM improve the device's performance and UI experiences, it makes the company warranty void and they will no longer be liable to provide updates in future [users can restore warranty by flashing the device with stock-ROM].
  • Make sure the device is rooted before going forward for custom ROM installation
  • This new CyanogenMod CM11 M11 Android 4.4.4 KitKat firmware has to be installed on the Samsung Galaxy S3 GT-I9300 (Exynos chipset) model only; if tried on other devices, it might get bricked [To check your device model: Go to Settings >> About phone >> model number]
  • Installation of custom ROM requires clearing of memory in the smartphone, so make sure to back all the data by installing Clockwork Mod (CWM) Recovery/ TWRP in the smartphone.
  • Users make sure you have installed USB drivers on the PC, or else your smartphone (Samsung Galaxy S3 I9300) will not be recognised by the computer.
  • Make sure your device has more than 80 percent battery, or else there is chance of smartphone getting temporarily bricked if the installation process is interrupted mid-way.

[Disclaimer: This procedure is very technical and should be performed by a person with sound knowledge of rooting (or manual software installation) Android devices. If the step-by-step installation process is not followed properly, there are chances of the smartphone getting bricked or being permanently irreparable. International Business Times, India Edition cannot be held responsible for any damage or claims from readers if the procedure does not yield the required results or if the smartphone is bricked. Hence, users are advised to proceed with caution.]

Step-by-step installation procedure of CyanogenMod Android v4.4.4 KitKat CM11 M11 custom ROM on Samsung Galaxy S3 Gt-I9300:

Step 1: Download CyanogenMod Android v4.4.4 KitKat CM11 M11 custom firmware (HERE) and Google Apps (HERE) in to your PC.

Step 2: Connect Samsung Galaxy S3 I9300 to PC via USB cord.

[Note: Before plugging the phone to the computer, be sure that you have installed USB driver software, if not, click HERE to download the firmware]

Step 3: Then, place 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: Now, turn off the device and disconnect from the PC.

Step 5: Then 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 '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 'wipe cache partition'

Step 8: Then to 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 user will not face boot loops or any other errors in the middle of custom ROM installation]

Step 9: Again come back to main recovery screen and then 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.

Now, your device (Samsung Galaxy S3 I9300) will take at a few minutes to complete the booting process.

Users then head to Settings >> select About phone to confirm the installation of CyanogenMod Android 4.4.4 KitKat CM11 M11 custom ROM.


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