Well, a friend of mine just got nice 2004 GX470 and would like to update the Nav disk and add a backup camera. I think the nav system is a gen 3 system but not sure. The disk is the original 3.1 version. I found the nav drive under the the passenger seat but I could not get the disc to eject, is there a trick to it? If I can add a back up camera, where do I get one from?

Thanks,
Don

Well, a friend of mine just got nice 2004 GX470 and would like to update the Nav disk and add a backup camera. I think the nav system is a gen 3 system but not sure. The disk is the original 3.1 version. I found the nav drive under the the passenger seat but I could not get the disc to eject, is there a trick to it? If I can add a back up camera, where do I get one from?

Thanks,
Don

No real trick to getting the disk out. I just updated mine and it took all of 3 minutes.

I don't know the answer to your BU camera question.