After you file


@ammar wrote:

Yes, I am using the 2020 software to amend it. I thought I read somewhere that you could in fact e-file your amended return, and that this was new as of Aug 2020.


No, using the TurboTax personal tax preparation software you can only e-file the current tax year 2021 amended tax return.  All prior year amended returns must be printed and mailed.