Samsung Galaxy S3: How to Install Android 4.1 Jelly Bean on AT&T Version

When first released the Samsung Galaxy S III comes with operating system Android 4.0 Ice Cream Sandwich. After a year, now already available update to Android 4.1 Jelly Bean for this phone.

See also: Android 4.1 Jelly Bean Update for Samsung galaxy S3 is Now Available

If you are lucky to have the Galaxy SIII AT&T version, then now you can update your phone's OS to Android 4.1 easily through