The Android 4.1.1 update for the HTC One S is finally being pushed out by T-Mobile. We're not sure if it's a coincidence that the update has been released 24 hours after T-Mobile's HTC One retail launch, but it does look a little suspicious. If you have not received a notification on your HTC One S to download the Jelly Bean update, you can manually ping T-Mobile's update servers by going to Settings > About > Software updates > Check now.
With HTC One S Android 4.1.1 update weighs in at 675.49 MB. Due to the size of the update, T-Mobile has made the decision that the update can only be downloaded over Wi-Fi.
HTC Source , T-Mobile HTC One S Android 4.1.1 update now available
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, T-Mobile HTC One S Android 4.1.1 update now available