Sorry, unless you downloaded it before you amended, the amended return overwrote the original return and it is gone. Only the last return done is saved.
You can request a transcript from the IRS
https://www.irs.gov/individuals/get-transcript
For a fee of $43 you can get a complete federal tax return from the IRS by completing Form 4506
https://www.irs.gov/pub/irs-pdf/f4506.pdf
