To get the MAC version to amend your return in TurboTax you can contact support using the form below.
https://ttlc.intuit.com/replies/5642468
You can purchase the
prior year TurboTax CD/Download versions here: Prior
year TurboTax Products When you click on Buy Now you will get the
options of getting Windows or Mac.
You can also see
below for instructions on how to amend your prior year return.
https://ttlc.intuit.com/replies/3288565
