Error games xbox classic on xbox 360 rgh

Hello! I have create HDDX on xbox 360 slim inside 250 gb and on usb, after made xbox folder and send to console, on freestyle start the game...but:
give this error with code : You can play some original Xbox games on your Xbox 360 console if you ... If you're not able to play a game listed below, try updating your console software.

Someone can help me?
THK

Please post what games you are trying to play.

Or check the list to make sure your games are listed.