by updating, I assume either a reinstall or upgrade to a new version. if you upgraded to win 10 from win 7 it might be possible to undo the update. no guarantee. depending on the type of hard drive - mechanical or SSD, the data MAY be recoverable using software available on the web. for most free or cheap software the key is that no part of the file can be overwritten by another file. more sophisticated software (meaning much more expensive) can recoverable even SOME over-written files. there is no guarantee.
easiest might be to go to IRS website and get transcripts of those prior returns
by the way as a suggestion store a backup of passwords on a thumb drive. this too can be encrypted and password protected. since there are so many hacks of online data I never use google drive or any other website to store passwords. I use a book title which I don't have among my many books.
