How To Install RootBox v3.9.1 4.2.2 Jelly Bean on Galaxy S3 I9300

RootBox v3.9.1 is a stable release of well known custom ROM Vanilla RootBox. The latest release is based on Android 4.2.2 Jelly Bean and is now available for Galaxy S3 GT-I9300. Vanilla RootBox custom ROM known for is very light installation with no extra/useless apps. This means, you can enjoy a pure Android experience combined with AOKP/CM features and some CM cherry-picks. By flashing or installing RootBox v3.9.1 ROM on your Galaxy S3 I9300 you will enjoy a customized experience of latest Android version which is Android 4.2.2 Jelly Bean. RootBox v3.9.1 not only offer a bloatware free, fast user experience but the included features make your daily mobile using experience easy. The ROM comes with all key features of known custom ROMs CM10.1, AOKP and Paranoid Android. If you wish to try out this fantastic and attractive custom ROM RootBox v3.9.1 then read through this page to know the step-by-step procedure of installing RootBox v3.9.1 custom ROM on your Galaxy S3 I9300.

If you don’t know then Android 4.2.2 Jelly Bean comes with various interesting features including multi-user support, gesture typing, new quick settings option, lock-screen widget, new camera app, photo sphere, improved Google Now, new daydream feature and miracast display.

Before flashing this ROM you should know that it’s a custom firmware and still going through development phase. That’s why, it’s very likely that it may comes with some bugs and issues that may look annoying to you. However, we all know most developer of ROMs are usually proactive and we believe all known issues will be fixed along with the development.

RootBox v3.9.1 Key Features:

• Per App DPI
• Per App Tablet UI
• Per App Language
• OTA Updates – Goo Manager
• Camera: Save to external memory
• Phone: Advance Phone Settings (Vibrate on Answer, Every 45 Seconds, On Hangup and On Call Waiting)
• Phone: Noise Suppression
• MMS: Message rate alerts (Modify SMS message limit for alert)
• MMS: Fully Customizable MMS Theme
• MMS: Soft Keyboard Type (Emoji, Enter to Send, Enter for a New Line)
• MMS: Emoji Support
• MMS: Read, Delete, Reply and Call options in StatusBar for messages
• Home button call answer (Accessibility Option)
• Variable size pattern lockscreen
• Clock: Increasing Alarm
• Clock: Flip/Shake – Snooze or Dismiss
• Clock: Disable Alarm Icon on Statusbar
• and many more.

Warning!

We at Droid Noob produce tutorial to help out fellow Android users but all this guide are educational purpose only. You should try this guide at your own risk. Neither we nor the developer should be responsible if  your Android device experience a damage after following this tutorial. Also remember,this guide is only applicable for Galaxy S3 I9300. Don’t try this guide in any other Android device. It may hard brick your device.

Pre Requisites:

As there is always some risk involve while you install anything other than what you have presently. It’s always recommended to follow our pre-requisites to stay safe.

1. Backup your important data such as SMS, Call Log, Contacts, APN and MMS settings. You can follow our Android backup guide for this. Also, it’s good idea to backup your internal memory content to external SD card, specially when during following instruction you have to perform some type of wiping task.
2. If your device turn off during the installation process unless explicitly mentioned on this tutorial then it may experience a hard brick. That’s why always check battery percentage before following this tutorial. Usually, the smartphone should have 60% or more power when you flash a custom ROM or firmware and it will be fine on 30% or more if you going to root it. Learn How to Check Battery Percentage in Android Phones.
3. You should make sure, you have installed proper USB driver for Galaxy S3 I9300. Visit our USB Driver Download page. If you can access your mobile content in your PC when both are connected the your already have it.
4. USB Debugging mode should be turned of if it’s disabled otherwise you can’t transfer file using USB cable. Learn: How to Enable/Disable USB Transfer on Android Devices.
5. Another thing you should note that nearly all our tutorial is for carrier unlocked and bootloader unlocked devices. You shouldn’t try to install it on a locked device unless explicitly mentioned.

If you already read and followed everything that we mentioned above then you are all set to go the next page of this tutorial which ultimately help you to flash Android 4.2.2 Jelly Bean based RootBox v3.9.1 ROM for Galaxy S3 I9300.

source: droidnoob