You must use xeBuild GUI 2.097 and genered key NAND - with information CPU key, next make update dashboard to old or latest version, next step this downloaded hdd combat fixer patition and xbox emulator for xbox 360 with topic: http://www.realmodscene.com/index.php?/topic/35-how-to-play-xbox1-classic-xbox-games-on-your-jtagrgh/
this all works - that are games with 2005 year: http://www.xbox.com/en-US/games/backwardcompatibilitygameslist.htm