Bricked Linksys WRT54G repair instructions
What you need:
1 bricked Linksys WRT54G router with boot_wait=off
1 bottle of wine
If you have to take courage first, the bottle of wine could help!
What to do:
Unscrew the antennas and open the router and look for the Intel flash chip. The chip has 48 pins. You can find the numbers on the edges of the chip 1 .. 24 .. 25 .. 48. Time for a big slug of wine! Now use the corkscrew to shorten pin 16 and 17.
I have the Linksys WRT54G v2.2, on some older routers you have to shorten pin 15 & 16.
Now plug in the power cable and your Linksys should be ping-able now. You can send the firmware using tftp:
tftp> put firmwarefile.bin