Android 4.1 Jelly Bean was promised earlier this month, but several Sony Xperia TL owners reported they were unable to download the update. AT&T today announced that it should be available to users by going to Settings > About phone > Software update. The same features previously mentioned – speed increases, better battery life, expanded notifications, Google Now, Drive Mode, and more – are available in the Jelly Bean update. Xperia TL owners should make sure the phone is charged at least 75 percent and connected to Wi-Fi before starting the update process.
Read more at http://www.mobileburn.com/21335/news/att-sony-xperia-tl-gets-android-41-jelly-bean#KT7IWG82I4HfJiiK.99