I tried to go from an old version of Alchemy to the latest linksys firmware for my WRT54G V1 using Linksys flash utility. It said the update was complete sucessfully but now the LAN ports are dead. I can still access the router via the wireless network but get no response to pings from the LAN side. Can you suggest any ways to fix this brick ?. Should I try reflashing a firmware via the wireless network ?