Unbricking a WRT54G v1.0 March 31
I've been trying to unbrick a Linksys WRT54G v1.0 for a few days now, mainly using guides over on dd-wrt.com but none of them described the symptoms I was seeing. While they were all mentioning flashing power or diag lights I was seeing power and diag lights constantly on.
The solution was from this howto and involved shorting pin 16 of the flash ram chip (which isn't an Intel one in v1.0) to ground while plugging it in (steady hands needed) - the diag light should then flash quickly and then more slowly. You should be able to ping the router then and tftp up a good firmware image. At this stage mine would only accept official linksys firmware - I had to wait until that was on there before using the web interface to flash the dd-wrt image. As a side note, the WRT54G v1.0 needs the vintage series of dd-wrt firmware - the standard one will brick it.