Decide How to Download Android 8.1
Google's Android 8.0 Oreo OTA could take a few days to hit your device. If you can't wait that long, you might want to manually install the update.
If you want to install the Android 8.1 update ahead of the OTA, this guide will take you step-by-step through the sideload process.
If you’re not comfortable with those instructions, you should wait for your Over-the-Air update from Google. When the update is ready to download and install, your phone or tablet will prompt you.
You can foul up the manual installation process so if you aren't one hundred percent comfortable with it, make sure you wait for the OTA.
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