Did anyone come up with a solution to the "loading stock software onto the empeg with a USB serial cable" problem other than "take it to your friend's house"?

I was just uploading the new Hijack onto a Hijack-less empeg over a USB serial cable and it failed. So I had to take it to the only real-serial-port computer I have to do it, which happens to be an OpenBSD machine. Once I got it uploaded, it wouldn't go past the "let fly the penguins of linux" stage. I figure I can get it back by just uploading the stock software again, but I can't figure out how to do that.