Im on Ixtreme 1.0
when i try to play halo 2 on my 360 i get this error X:5805.0 B:1884.0 ? whats wrong?

this is what i did i bought halo 2, i put it in xbox 360, i press play game, then an xbox live update came up, i updated, it restarted, then i got error code X:5805.0 B:1884.0

Is it an original copy of Halo 2 or a backup?

yes backup

If it was a backup made for Xbox 1 it will not work. You have to rerip it from the original to be compatible with the 360.