If you own an Xbox One, Xbox Series S, or Xbox Series X, this is the easiest path. Fight Night Champion is backward compatible.
Allowed alternate weight class DLC boxers and George Foreman to be imported into Legacy Mode. OWC Matchmaking: fight night champion 102 patch full
★★★★★ (Essential) Final game after patch: 9/10 If you own an Xbox One, Xbox Series
Sony’s PS3 update servers are still online but slow. For a guaranteed full patch: If you own an Xbox One