Install Dragon Jelly Bean 4.1.1 custom ROM on Samsung Galaxy S3 I9300

Dragon's Android 4.1.1 Jelly Bean custom ROM for Galaxy S3 I9300

A new Android 4.1.1 based custom ROM has been released for the Galaxy S3 I9300, and now you can use this post and learn how to successfully flash it on your device using the custom Recovery mode. Read all the info in this post and make sure to ask extra help in comments.

Dragon’s Jelly Bean custom ROM is based on Android 4.1.1 XXDLJ1 firmware and it is rooted, deodexed, zipaligned, it packs an improved ext4, SQLite3 and multiple other enhancements. It has been released by Dragon7780, an XDA member and developer. If you want to successfully flash this ROM, then you will have to read the guidelines below:

  • Use this guide only for the Samsung Galaxy S3 model number I9300, which is the International GSM variant. Do not attempt to install this custom Dragon Jell Bean custom ROM on any other Android device.
  • Your phone has to be already rooted and running the CWM Recovery. Without these you won’t be able to flash the new OS.
  • Use the following tools and create a list of installed apps, backups for SMS, Call Logs and APN Internet Settings: SMS backup & restore | Call Logs backup & restore | APN Settings Backup & Restore | AppBack for Android application. Some of these apps will ask for root access and you should allow that.
  • Save all your Contacts by syncing them with the Google Account you’ve assigned for your phone. Use this guide HERE if you don’t know how to do it.
  • Use the CWM Recovery to create a full NANDROID backup of your current Android OS. This backup will be very important in case your device gets bricked or you cannot boot into normal mode after installing the Dragon JB custom ROM.
  • Enable USB Debugging option from the Development Options in Android Settings.
  • Please note that we cannot be blamed in case something goes wrong and you cannot use your device after installing this new ROM, nor can we be held responsible for any data loss. Make sure that you know what you’re doing before getting to the tutorial.
  • Read all the info in the tutorial and make sure that you won’t skip any steps.

These were all the instructions you had to read before getting to the next part of this article. In case you cannot complete the installation, then you can ask for our help in comments.

How to flash Dragon’s Jelly Bean custom ROM on Samsung Galaxy S3:

  1. Download the ROM zip file from HERE. Save the file on PC and don’ t unzip.
  2. Connect the SGS3 to PC using the USB cable and then move the Dragon JB ROM on its internal Sd card.
  3. Disconnect the smartphone from computer. Now you need to power off the SGS3.
  4. Boot it into CWM Recovery mode. It can be done by pressing Volume Up, Home and Power. Do not release the buttons until the Recovery mode menu appears.
  5. If you don’t have a backup of the current ROM, use the ‘backup and restore’ option from the main CWM Recovery menu. Create a backup and then get to the next step or, you can skip this step totally if you already have made a ROM backup before getting to this step.
  6. Now, select ‘wipe data/ factory reset’ option and then confirm this action. When the data wiping is finished you can get to the next step.
  7. Select ‘install zip from SDcard’. Next, select ‘choose zip from SDcard’.
  8. Browse for the Dragon Jelly Bean custom ROM zip file and confirm that you want to install it.
  9. When the new OS installs all of its files, you need to return to the main ClockworkMod Recovery menu.
  10. Select ‘reboot system now’ option.
  11. Now wait until the first boot with the Dragon JB ROM completes. It shouldn’t take more than 10 minutes.
  12. When the phone enters the normal mode you need to add your Google Account.
  13. After that you have to restart the device once again after 20 minutes have passed. When the phone resumes normal mode it means that you’re done and you can start testing your brand new Android OS.

NOTE: If the first boot process doesn’t complete and the phone gets stuck at the Samsung boot animation, then you can remove the phone’s battery. Re-insert it after 5 seconds and then repeat the entire tutorial starting with step 4. The ROM should install at your next attempt.

If you have any other questions or you cannot install the new ROM on your I9300 Galaxy S3, then you should leave a detailed comment at the end of this post and, we will attempt to come up with the correct solution to all of your problems.

In case you don’t like this new Android 4.1.1 custom ROM, then you should use CWM Recovery and restore the backup of previously installed ROM.