Samsung SM-T217AZKAATT - Manual (Page 152)

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Software Update
The AT&T Software Update feature enables you to use your
device to connect to the network and download any new
software directly to your device. The device automatically
updates with the latest available software when you access
this option.
Software Update Options
1. From the Settings screen, touch About device ➔
Software update.
2. Touch Check for updates.
3. At the AT&T Software update prompt, touch OK to
continue.
4. The device automatically updates the software (if
available), otherwise, when the Current software is
up to date prompt displays, touch OK.
When updating software, once the update file is downloaded,
you can delay the update on the start screen by postponing it
for a certain period of time. If you want to resume the update
before the selected time, touch Continue update.