Download Jelly Bean for Galaxy S3 I747

Derived from CyanogenMod 10 (CM10), a new custom ROM known as Asylum CM10 was forged. XDA Developers member antiochasylum built the ROM, intending to use the fullfunctionality of CM10 and features of stock Android 4.1 Jelly Bean, plus some extras for this custom ROM. With CM10, surely the Asylum CM10 ROM will be fast and will pack great performance.

Here’s a list of the features the Asylum CM10 ROM has:

• Built from official CM10 source
• Some performance tweaks
• Added UI tweaks and themes
• Removed bloatware
• Added Apex Launcher as a default launcher

This custom ROM is not official Samsung software, so you may encounter some issues or bugs, some stock Samsung ROM features may not be available, or the whole ROM may not be working.  Use this ROM at your own risk.

This guide shows you how to upgrade the Galaxy S3 I747 to Jelly Bean via Asylum CM10.

• Download the Asylum CM10 ROM (asylum-cm10-d2att-build-03.zip, md5sum: 3d1b72d5cd724eb09d805a6120c44b89)
• Download the Google Apps package (gapps-jb-20120726-signed.zip, md5sum: f62cfe4a827202899919fd932d5246d7)

Instructions

1. Copy the Asylum CM10 ROM and Google Apps package into the internal SD card of your phone.
2. Turn off your phone.
3. Reboot your Samsung Galaxy S3 into ClockworkMod Recovery. You can do that by pressing and holding down the Volume Up, Home, and Power buttons until recovery boots.
   • NOTE: While in recovery, use the Volume keys to navigate and the Power button to select an option.
4. Create a NANDroid backup of your current ROM. Go to Backup and Restore and selectBackup on the next screen. Wait until your phone completely creates a backup of your ROM.
5. Perform a full wipe by doing the following:
   • Select Wipe data/factory reset and confirm the action on the next screen.
     • If you are already on CM10, you may skip wiping your data and proceed to wiping your cache.
   • Select Wipe cache partition and confirm the action on the next screen.
6. Go back to the main menu. Select Install ZIP from SD card, then select Choose ZIP from SD card.
7. Locate and select the Asylum CM10 ROM ZIP file. Confirm the installation on the next screen.
8. Once the installation is complete, repeat step 6 but select the Google Apps ZIP file and confirm on the next screen.
9. Go back to the main menu and select Reboot system now to restart your phone.

Excellent job! You have successfully installed the Asylum CM10 ROM based on Android 4.1 Jelly Bean on your AT&T Samsung Galaxy S3 SGH-I747. Don’t forget to post your comments about the custom ROM below.