If that's the case, maybe it can be bypassed by using a resigner? With the resigner you can change the profile, system and HDD IDs linked to the save file and assign your own IDs.yeah it there to stop people sharing the dlc basically, they lose money if we could share call of duty maps and arcade games
I've seen the same trick used with NHL 2k8, a game that doesn't have roster sharing via Live, but has gotten recent, fan-made, roster updates and it works like a charm. http://www.operationsports.com/forums/nhl-2k-rosters/386904-nhl-2k8-360-current-roster-1-7-10-a.html