Parandroid Custom ROM Firmware on your Samsung Galaxy S3 with AT&T users then the Custom ROM firmwares for the AT&T galaxy S3 version smartphone available at XDA android developer forum.
But the official ETA of android V4.1 Jellybean for Galaxy SIII upgrade not yet releases but until the official firmware update, user can get Jelly bean looks and features by using other Custom ROM firmware available in many android developer forums. Here is Parandroid Custom ROM Firmware updates developed by one of the Senior XDA member and released with step by step.
Before start your Galaxy S3 Parandroid Custom ROM Firmware installation on AT&T Galaxy S3 mobile read carefully Disclaimer and warning from our team.
Steps to follow before start to Update AT&T Galaxy S3 with Parandroid Custom ROM firmware
Take full backup of your personal data like SMS, MMS, contacts list, Call logs, etc., from the device, so that if they are lost during the update process, you can use the backup to get back the data.
Use best android backup APK and take complete data backup (MMS, call logs, Contact list, SMS) that you have installed from google play store and Back up Messages using SMS Backup and Restore Download
Use Sync option to save your contacts with gmail or import the contacts to the SD card as .vcf file format which later on you can export to restore the contacts.
Enable USB debugging mode (Settings –> Applications –> Development –> USB Debugging)
Important! Minimum 60% of your Phone battery must be charged
Disable Antivirus applications in your device and computer to avoid any disruption
Update AT&T Galaxy S3 with Parandroid Custom ROM firmware [Step by Step]
Make sure your Galaxy S3 device is rooted before starts install Parandroid
Download Parandroid Custom ROM Firmware Package (PA-1.9.7-datt-8-10.zip-150MB) Google Apps Package to local computer and unzip using most popular unzip software and transfer all files to your mobile MicroSD by using USB data cable connection setup. After successful transfer, disconnect or unplug cable from your computer and turn it off.
Next step is to select Recover mode by pressing Volume up Key + Center button and while doing so, press the power button to enter recovery mode.
After your device in recovery mode, now select “choose Zip from SD card” and select the latest Parandroid Custom ROM firmware update package from your mobile device then finally choose “install zip from SD card”.
The installation steps are in progress then repeat the procedure for installing the Google Apps ZIP Package
Finally after installation, the device will settle back in recovery mode and reboot your device to get your new custom ROM updates.
Hope this step by step tutorial helps to get successfully installed Parandroid Custom ROM Firmware on your AT&T galaxy S3 Android mobile.
Disclaimer and warning:
This Parandroid Custom ROM Firmware installation supports only for AT&T Galaxy S3 version model not for other version of Samsung galaxy mobile and HTC android 4G mobiles. Please check your mobile model with help of Settings » About before preparing to install.
We are not responsible for any damage of Hardware as well as software while Parandroid Custom ROM Firmware on Galaxy S3 and the download links also provided by external party.