Did I brick it?

I've a Buffalo WHR-G54S.  I recently flashed to tomato.  Didn't like it over my old performance.  Before deciding to go back to the original fw I decided to do a hard reset of the router - big mistake.  Long story short, I have no way to connect to my router IP that I know of in order to copy over the unencrypted original files, every time I try to access the IP it times out.

What should I do now?

what i mean is: what do i use to write the firmware to the router memory?