You can download the update via Firmware Over the Air (FOTA).
You must connect your device to Wi-Fi to download the update.
Although there should be no impacts to settings or data, we recommend that you back up your media files to an SD card, a PC, or using a favorite application, prior to upgrading the software.
Update & verify software
To update the software
Make sure your device is fully charged and connected to Wi-Fi.
Swipe down from the Notification bar, then tap the Settings icon.
Tap About tablet > System updates.
Select the Check for updates checkbox, then tap Select.
Follow the on-screen prompts to download and install the update.
The device automatically restarts once the new software successfully installs.
To verify the software update
Swipe down from the Notification bar, then tap the Settings icon.
Tap About tablet.
The device has the latest software if the Android and Baseband versions match the current update details.