My bose wave music system multi-cd changer?

My Bose wave music system multi-cd changer stop working. I try to update my wave music system, the only thing is when I put in my update Cd it display Loading, Update and then it eject the Cd out. Looking at my booklet, I see where it is suppose to go through a process of loading, updating, finished and ejecting. So I think that is a big problem why my wave music system multi-cd changer is not working. My wave system work fine.