@hotsawce
It looks like you have to print and mail, I did not realize this was for a prior year. I think that tax professionals can access e-filing after the usual end of the season, and my memory from several years ago was that I could e-file an amended NY return past the October 15 limit, but maybe I remember it wrong. You will need to print, sign and mail. Be sure to include any required documents that might need to be attached (listed on the instruction page) and use a mailing service with tracking and proof of delivery just in case.
