Nope. Once upgraded, u can't go back to previous version.
"And liftoff, the final liftoff of Atlantis, shoulders of the space shuttle, America will continue the dream."
"Liftoff for the final launch of Endeavor. 'xpending our knowledge, 'xpending our lives in space."
"The final liftoff of Discovery, a tribute to the dedication, hard work and pride of America's space shuttle team."
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