At the top of TurboTax there is a menu bar (File, Edit, View, Online, Help)
Select the "Online" choice, then select "Check for Updates" from the list.
If you do no see the menu bar, and IF you are using Windows, you can select the Online choice by holding down the [Alt] key, tap the [N] key, and then you can hit the [Enter] key by itself. That will get you the Check for Update choice.
HTH
JohnR