FYI - if anyone else is having the same problem as I did, referring to this thread will probably help:
Once I realized it was only hung up, it didn’t really matter that the power went out because the firmware update was not in progress. I restarted my computer and the drive looks fine - I’m just running one final diagnostic to check it out. I’m not going to bother with any more updates, software or otherwise. I’ll just come back to the forums and keep looking if it still runs slow!
