Before you begin, please be sure to follow these tips for a successful update:
Because updates differ based on model number, you must first determine which model number you have.
Android Settings → About Tablet → Check Model Number
Your model number should be either TNDT80 or TNDT80B. Continue to follow the instructions below based on your specific model number.
Your tablet's build number is used to determine which updates (if any) you need to install. To check your tablet's build number, tap Android Settings → About Tablet → Build Number
If your build number is less than 20171110, follow these instructions: OS Update to 20171110 →
If your build number is 20171110, follow these instructions: OS Update to 20171219 →
Your tablet's build number is used to determine which updates (if any) you need to install. To check your tablet's build number, tap Android Settings → About Tablet → Build Number.*
If your build number is less than 20160826, follow these instructions: OS Update to 20160826 →
If your build number is 20160826, follow these instructions: OS Update to 20170428 →
If your build number is 20170428, follow these instructions: OS Update to 20170923 →
If your build number is 20170923, follow these instructions: OS Update to 20171110 →
If your build number is 20171110, follow these instructions: OS Update to 20171222 →
*Continue to check for updates until your operating system has reached build number 20171222, as this is the latest software version.