Halo 2 1.1 Update Glitch?

[Axel18]

Ok So I recently reinstalled H2 Multi player Map Pack. It updates successfully, I forgot to enable the Yello trainer to Disable Update. Well it loads my mod map fine. In game I get a message saying that 1.1 content is damaged and I say Ok. I get back to the main menu and the 1.1 is gone that was in the lower corner. All seems to be working except for the one map it reverted my setting back to normal and I still have the new multi player maps in addition to my mod maps on the menu. So did it revert to the previous version?