CM12 Android 5.0.2 Lollipop ROM for Galaxy S3 I9300

Galaxy S3 i9300 owner? Wait no further for Android 5.0.2 Lollipop as our own Cyanogen Mod team has released CM12 custom ROM for your device.

Android 5.0 and even 5.1 Lollipop is out for most of new devices but older devices like Galaxy S3 are yet to taste the latest OS from Google. Though Samsung is busy in releasing official Lollipop firmware for its ex-flagship devices which includes Galaxy S3 versions (i9300, AT&T Galaxy S3 I747, T-Mobile Galaxy S3, Sprint Galaxy S3 L710) but we are yet to see these updates.

CM12 Android 5.0.2 Lollipop ROM for S3 I9300

If you are owner of Galaxy S3 i9300 (International) then don’t wait any further for the official Android 5.0.2 Lollipop update from Samsung as our own team behind Cyanogen Mod have released CM12 Android 5.0.2 custom ROM for your device.  According to the developers, this custom ROM is stable and runs very smoothly on S3 i9300 and comes with lot of awesome apps like Google Apps. Additionally the said ROM is bloatware free thus giving pleasurable Nexus UI. Our detailed guide will help you install CM12 Android 5.0.2 Lollipop Custom ROM on your S3 i9300. Since this is custom ROM so make sure your device is already rooted with custom recovery like CWM or TWRP installed on it.

There are some things that you should go through before you proceed with guidelines:

  1. Make sure your phone is fully charged. If that’s not possible, make sure it has at least 60% or more charge remaining.
  2. Your Galaxy S3 i9300 should be rooted.
  3. This guide is only meant for Galaxy S3 i9300 (International) and trying this on any other device might cause damage.
  4. Last and most important,make sure you have complete backup of all your important data including SMS, contacts, call logs etc.

Steps to Download & Install CM12 Android 5.0.2 Lollipop ROM on Galaxy S3 i9300

Download the CM12 ROM for S3 from here and Google Apps from here. When the downloading is completed, place the zip file on your desktop and proceed to next step.

Connect your mobile to your computer using the USB cable. Make sure latest drivers of your Samsung are already installed on your PC. When the computer detects your mobile, transfer the downloaded zip file to your mobile SD card.

Now turn Off your smartphone and boot it to recovery mode. For that, press and hold “Volume Up + Power” buttons simultaneously.

In recovery mode, first erase the previous OS by choosing “wipe factory reset” option. After that clear the cache using “wipe cache partition” and “wipe dalvik cache” partition options.

Now we are ready to flash CM12 Android 5.0.2 Lollipop custom ROM on i9300. Just choose “install zip from SD card” followed by “choose zip from SD card” options and browse for the transferred ROM zip file. [Repeat this step for Google Apps too]

The installation process will take few minutes and once it is completed, reboot your device from main recovery menu.

Yep, you did that. You have successfully updated your Galaxy S3 i9300 (International) to Android 5.0.2 Lollipop using CM12 custom ROM. If you faced any difficulty or have any question, don’t hesitate to ask us.