Need to update firmware on something, how to?

I got a Blue Snowball. Their site is junk, so I had to track down a copy of the new firmware. I'd like to have a copy of the OLD FIRMWARE from the microphone itself if there's an issue, since I can't get it from the company. How do I install the new firmware, and how can I save the old firmware off the device to my computer somewhere?

I would like to renew this thread. I, unbelievably, lost my firmware and not it seems that it can't be found on the internet. Please let me know if you know where to find these. Thanks!