Should be able to open a file without updating. It’s July 2021 Taxes have been filed for 3 months Need info from file. Can’t open without updating.

[DoninGA]

To access your current or prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/

Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show.  Click on the Year and Click on Download/print return (PDF)

Or -

When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state. 

This will take you back to the 2020 online tax return.

Click on Tax Tools on the left side of the online program screen.  Then click on Print Center.  Then click on Print, save or preview this year's return.  Choose the option Include government and TurboTax worksheets

[Critter-3]

The online program is updated automatically on the TT servers and it cannot be stopped.  

If you use the downloaded version you can turn off the auto update function.