when i do the update on my older xbox 360 i get the e66 error with single flashing red light at the front of the console close before the setup is finished. when i turn the console back on and don't do the update it does work without it, but that obviously won't get me online. e66 is described as a problem with the firmware and the dvd drive and if u get it, then it could be due to the drive has undergone somekind of modification or flashing but none of that happened with my piece.
i already heard about other people complaining about their broken dvd drive after the update, but my update won't even finish. i wonder if other people have also experienced the e66 bug and if microsoft will also replace my console with a new one.