Galaxy S3 I9300 can be installed with a new Custom ROM named as JellyBeer ROM, based on Android 4.2.2 Jelly Bean. The ROM is CM10.1 based Hybrid ROM. The ROM will bring new features, customization and will improve performance of your Galaxy S3 I9300.
This is not an official ROM by Samsung but a Custom ROM.
+ Based on CM-10.1
+ PA’s hybrid engine for a full user experience
+ Switch between three different UI modes
+ Change the system DPI
+ Add apps to different DPI groups
+ Change the navigation bar height
+ No reboot needed for UI changes
+ AOKP navigation bar
+ More features and improvements
+ This is always a work in progress
The guide mentioned below is only for Galaxy S3 I9300 and cannot be tried on any other device. To know the Model No. of device go to Settings >> About Phone.
We cannot be held liable of any damage done to your device while following the below mentioned procedure.
Install Android 4.2.2 JellyBeer ROM on Galaxy S3 I9300
Take a complete backup of data,apps and settings as the procedure may wipe your data.
Make sure that the battery of device has a minimum charge of 60%.
Enable “USB debugging” on your device by going to Settings >> Developer options >> Enable USB debugging.
ClockworkMod Recovery on your Galaxy S3 I9300 should be installed. Guide to install ClockworkMod Touch Recovery on Galaxy S3.
Download JellyBeer ROM and Google Apps Package on Galaxy S3 I9300.
Copy both the zip files to SD-Card of your device without extracting.
Switch off device and boot into recovery. Hold power button and volume down button and enter recovery.
Select “wipe data/factory reset”, wipe cache partition” and in Advanced select “Wipe Dalvik Cache”.
Select “install zip from sdcard” and then select “choose zip from sdcard”. Navigate to “JellyBeer ROM” file which you have downloaded and confirm to “install”. Wait till it gets installed.
Repeat the procedure to install Google apps by selecting “choose zip from sdcard” and then select “Gapps.zip” and install.
Select “reboot system now”.
JellyBeer ROM based on Android 4.2.2 Jelly Bean on Galaxy S3 I9300 is installed.