A clarification on this question: I can see that 1040X is available on the "forms" dropdown menu of the desktop version. But when you start the amending process, you select 'amend a return.' Next, you see a list showing sections of the tax document, and you choose "update" for the section that needs amending (in my case, adding 1098T information). It says "Do you want to enter your higher education expenses." When you select "yes" it says "you can't claim an education credit" because "you didn't enter a valid first name"...but when you go back to add that information, the system sees this as a new return. When I tried just entering my name without the other information, it calculates it on a 1040X, but it as if I have no income at all and the calculations are not accurate.
