Even if you could get them installed you couldn't update them or download any state programs for it. Why do you need older years? Do you have the .tax data files you need to open?
You could try the TaxPrinter service to convert a .tax file to pdf at
https://www.taxprinter.com
They might be expensive and it is probably not safe to email tax returns back and forth. They are not related to Turbo Tax. I don't know if they can do State.
