A past year return cannot be e-filed. The only way to file it is by mail. So you will need to print it, sign and date it in ink, and mail it to the state.
You have not mentioned whether you have already prepared the state return, or whether you used TurboTax to prepare your federal return. We need to know those things in order to be helpful and tell you what to do next.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
