The customizable nature of Android has never failed to excite users, especially when there are great features involved. These new features are not just nifty but also very handy for daily tasks. We have to give our clever developers credit for creating yet another flashable custom ROM for the Samsung Galaxy S3 GT-I9300. Introducing the Anaraxia ROM v5 built from Samsung's latest leaked firmware, Android 4.1.2 Jelly Bean I9300XXELKC.

Named after its dedicated developer, XDA Developers member Anaraxia, the Anaraxia ROM is packed with a bunch of features. The ROM comes with SuperSU and has been rooted, deodexed, and zipaligned. It also comes with an unsecured boot.img, BusyBox, and stock kernel for a touch of stability. There's a whole lot more under the Anaraxia ROM's hood and the best way to see these features in action is to flash it on your Galaxy S3.

This guide shows you how to flash Anaraxia ROM for the Galaxy S3 I9300.

Warning

• The instructions in this guide are intended for use with the Samsung Galaxy S3, model number GT-I9300. Applying these instructions on another device or model may produce undesired outcomes.
• The information in this guide is provided for instructional and educational purposes only. There is no guarantee that these instructions will work under your specific and unique circumstances.
• Use these instructions at your own risk. We shall not hold any responsibility or liability for whatever happens to you or your device arising from your use of the info in this guide.
• Read and understand the whole guide first before actually performing the instructions.

Requirements

• Samsung Galaxy S3 I9300 with root access and with ClockworkMod Recovery installed.
  • Check out our guide on how to root your Galaxy S3 and how to install ClockworkMod Recovery.
• Download the Anaraxia ROM v5 (JB_4-1-2_I9300XXELKC_ANARAXIA-ROM_V5.zip, md5sum: bb6e5d1a2b6473f45a9f1d7a55e44244).
• Backup all personal data on your phone to make sure you have a copy of your personal data (e.g., contacts, SMS, MMS, Internet settings, Wi-Fi passwords, and the like) in case the procedure in this guide erases such data.
  • For backup tips, check our guides on how to sync your data to the cloud and how to create local backups of your mobile data.
• Make sure that your phone's battery power is at least 50% to avoid installation interruption due to power loss.

Instructions

If you are currently running a different ROM

1. Copy the Anaraxia ROM file to your Galaxy S3′s SD card.
2. Turn off your phone.
3. Boot into recovery mode by holding down the Home, Volume Up, and Power buttons.
   • Note: In Recovery mode, use the Volume buttons to navigate through options and the Power button to select.
4. Create a NANDroid Backup of your existing ROM. Go to Backup and Restore > Backup.
5. Select Wipe Data/Factory Reset > Yes.
6. Select Wipe Cache Partition > Yes.
7. Select Advanced > Wipe Dalvik Cache > Yes.
8. To flash the ROM, select Install ZIP from SD card then Choose ZIP from SD card > Locate and select the Anaraxia ROM file > Yes.
9. Select Go Back > Reboot System Now.

If you are running an earlier version of this ROM

1. Copy Anaraxia ROM file to your Galaxy S3′s SD card.
2. Turn off your phone.
3. Boot into recovery mode by holding down the Home, Volume Up, and Power buttons.
   • In recovery mode, use the Volume buttons to navigate through options and the Power button to select.
4. Create a NANDroid Backup of your existing ROM. Go to Backup and Restore > Backup.
5. Select Wipe Cache Partition > Yes.
6. Select Advanced > Wipe Dalvik Cache > Yes.
7. Select Install ZIP from SD card > Choose ZIP from SD card > Locate and select the Anaraxia ROM file > Yes.
8. Select Advanced > Fix Permissions.
9. Select Go Back > Reboot System Now.

Great! You've just flashed the Anaraxia ROM v5 to the Samsung Galaxy S3 GT-I9300. Don't forget to leave your feedback in the comment section. Enjoy!