ParanoidAndroid ROM which is the latest ROM is been released for AT&T Galaxy S3. The ROM is a hybrid interface which means that you can enjoy Phone and Tablet Interface. All thanks goes to XDA Senior member thebz1 for making it possible.Remember that the ROM is currently in initial stage so you might experience bugs.
Camera focus fixed!
Random Reboot/Sleep of Death bug fixed!
Other misc. bugs fixed!
Enabled full overlay UI!
Major kernel update!
Trebuchet is included and default launcher!
Clean install bug fixed!
New PA features!
The guide mentioned here is only for AT&T Galaxy S3 and will not work on any other device.To know the Model No. of device Go to Settings >> About.
We cannot be held liable if your device gets damaged while following the below mentioned guide.Go through the instructions carefully.
Install ParanoidAndroid ROM on AT&T Galaxy S3
Before you proceed take a complete backup of data,apps and settings as the procedure may wipe data.
Your device battery should have a minimum of 50% charge so that it does not gets turned off while you update the ROM.
Enable USB debugging on device.You can do that by going to “Settings” >> “Developer settings” >> Enable “USB debugging” option.
Make sure that ClockworkMod recovery is installed on your device.
Download latest version of ROM from here.
Download Google Apps package from here.
Copy both the above downloaded files to internal SD card of device without extracting.
Turn off device and boot into CWM recovery.You can do that by pressing and holding down the Volume Up, Volume Down and Power buttons.
Do a Nandrop backup of existing ROM.To do a backup select “Backup and Restore” >> On the next screen >> “select Backup again”. Once backup is done go back to main Recovery Menu.
Select the option “wipe data/factory reset” and then confirm to wipe.Wait till the process gets over.
Choose “install zip from sdcard” and then select select ‘zip from sdcard” and go to the ROM file which you have downloaded and select it to install.The ROM will start installing.
Once ROM is installed, select “choose zip from sdcard” and then select gapps-jb-20120726-signed.zip file to install the Google apps package.
“Go back” then select “reboot system now” to reboot device.
You have now just installed ParanoidAndroid ROM on AT&T Galaxy S3!