So, I took out my super drive for the HDD. I have an external closure (2nd one) to put the drive in. It connects with a mini USB to 2 USB ports. I've tried everything I could do before with it externally and it was fine. However, when I was going to upgrade the firmware, I was unable to. It was a selection a selection at boot, but once selected it won't continue. I've tried several discs and cables already. And also this is why I got another external enclosure. So, I temporarily put the drive back in the MBP and it continued to boot from CD and the firmware upgrade was successful. These 2 closures couldn't do that outside the MBP. I'm wondering now if the Apple External SuperDrive would actually work as well. Has anyone ever tried this? Any experience? Anything I can do?