I bricked my new WRT54GS when I tried to go back to Linksys firmware from the DD-WRT Talismen. I got an "upgrade failed" message, and then the power and DMZ lights started to blink. I somehow managed to re-flash it using an old BEFSR TFTP utility with the Linksys firmware, and now only the power light blinks -- still no access. And I can't seem to re-flash it using the same utility. PLEASE HELP!