how do you electronically efile an amended 2020 tax return on proseries

[IRonMaN]

You start by waiting for the form to be ready next month.

[Just-Lisa-Now-]

You can keep track of the release dates here, but I think the yellow bar at the top of the form gives you the same info.

https://myproconnect.intuit.com/releasedates

It shows the 2020 1040X wont be ready until March 25, and that date is subject to change