i softmodded my xbox awhile ago and my little brother was messing around with it and now whenever i don't start up the xbox with a game or dvd(movie) it shows a black screen with green writing "your xbox requires service, please call xbox customer support" and it has a "21" in the top left of the screen. Someone please help me to get my xbox working again. (i can still play game and watch dvd movies, but i can't use backups of the of my games)
He might not have to hot swap. As long as the soft mod save is still on your hard drive, load up the game and game save so you can reinstall the soft mod. If you don't have the game save or you paid someone else to soft mod it, you'll either have to ask them for assistance or try to hot swap like wasted05 suggested.