I know it's been a few years but i'm trying to do this to get an updated roster for madden 12. I have the roster on my pc, i used Horizon instead of modio because it looks like modio doesn't work anymore. The steps look like they still apply though, but when i open the game after replacing the roster i created in game on the 360 / saving to my flash drive / I turned off my xbox 360 / put flash drive into my PC / opened file in Horizon / navigated to the roster file / clicked "contents" tab / right clicked on roster file / clicked replace & chose the roster file i downloaded from a discord server / Horizon confirmed with a chime / took flash drive out and put back into xbox 360 / copied the new roster to my xbox 360 and loaded up madden 12. I loaded the roster in game, but nothing changed. I saw in your above post that you had the same issue initially but then said it worked... can you tell me how you fixed it or got it to work.