Ok, i updated my zune software to 2.0 and my firmware to ver. 2.2, but the next day the software suddenly reverted back to it's former version ( you know the black-colored layout one). Then i tried to download the new software again, since i can't sync with the software with the new firmware, but whenever i tried downloading the software from zune.net/setup, it would always say that my software is up to date, but it's not. Can anyone help me on how to fix this

?
Also, i've planned on trying to keep the sofware as it is and to delete everything on my zune so i can update back to the 1.4 firmware. But i need intake on if it's a good idea, becuase my zune is the halo 3 edition and it has all that pre-loaded videos, soundtracks, and pictures.
Can anybody help me?
and any help would be appreciated..
thanks in advance