1 week after I filed my 2017 taxes with TurboTax software I received a letter from the IRS regarding my 2016 tax return. I need to file a 1040X for 2016. When I tried to open my 2016 return it wouldn't work because I had already updated the software to do 2017. Is there a way to work around this? How can I file a 1040x with turbotax without having to completely doing it by hand?