If you have a serial connection with the console, your not bricked or DOA. you just need to reflash the uboot so you can do the rest normally.
This section of the wiki should help you out: http://www.solid-run.com/mw/index.php/U-Boot_commands
. Most likely the via serial connection is the method you'll end up going with. It's written for linux but it's easy for windows. 1: you need a terminal program with xmodem in it. securecrt trial or freeware terraterm will work . where it says type a command, what your going to do is xmodem send/upload the file instead of typing anything.
take note of the section where it says this is tricky you might have to try it a lot of times to get it to work.