See the link I posted above that tells you.
Again, if you purchased the 2018 CD/download version than you do not need any new software, just apply the latest update to the software that you already have.
See this TurboTax FAQ for detailed amend instructions:
https://ttlc.intuit.com/questions/1894381-how-to-amend-change-or-correct-a-return-you-already-filed
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
