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Android mascots are lined up in the demonstration area at the Google I/O Developers Conference in the Moscone Center in San Francisco, California, May 10, 2011. Reuters/Beck Diefenbach

CyanideL Android 5.1.1 Lollipop custom ROM adds several new features to the AT&T Samsung Galaxy S3 I747. It includes Heads-Up Notifications, custom power menu, custom Quick Settings tiles, screen recorder and more.

Requirements:

1. Apply this custom to the AT&T Samsung Galaxy S3 I747 only that has been rooted with ClockworkMod or TWRP custom recovery.

2. Create a manual backup of all data files stored on the smartphone.

3. Make sure that the battery level is at least 80 per cent to avoid power interruption.

4. Enable USB Debugging mode on the AT&T Galaxy S3 found in the Settings menu.

5. Download and install USB Drivers for the device to the computer.

6. Download the CyanideL 5.1.1 custom ROM and the Google Apps to the computer.

Warning: We are not responsible for any errors which may occur on the Samsung Galaxy S3 I747. Read and follow the instructions to avoid damaging the device. Do this at your own risk.

Flashing Instructions:

1. Connect the AT&T Samsung Galaxy S3 I747 to the computer using a USB cable.

2. Copy and paste CyanideL 5.1.1 custom ROM and Google Apps zip files to the microSD card of Galaxy S3. No need to extract the zip files.

3. Disconnect the smartphone then switch it off.

4. Reboot into Recovery mode by pressing and holding the volume up, home and power keys at the same time.

5. Inside the Recovery mode, create a backup of the current ROM by selecting “backup and restore > backup.” A copy will be saved on the SD card which can be restored using the “restore” option.

6. Perform a full wipe on the device by selecting “wipe data/factory reset” and “wipe cache partition.” Now go to “advanced > wipe Dalvik cache” then go back to the main menu.

7. Now install the CyanideL 5.1.1 custom ROM by selecting “install zip from SD card > choose zip from SD card > select the custom ROM zip file > confirm installation.” Use the same method for the Google Apps zip files.

8. Once the installation has been completed, go back to the main menu and select “reboot system now.”

AT&T Galaxy S3 I747 will restart and may take up to five minutes before reaching the home screen. For bugs and issues about the ROM, kindly send feedback to CyanideL Android 5.1.1 webpage for AT&T Samsung Galaxy S3 I747.

To report problems or leave feedback on this article, email: ryaninoyori@gmail.com