I am running xp w/sp1 and I am unable to flash using the satori firemware. I am using the correct firmware file for the "s" model. To flash my router i go to firmware upgrade tab and browse for the firmware file and hit upgrade., but i get the error "upgrade are failed." I can flash using the linksys firmware successfully. I haven't touched any settson the router except for wireless settings and openiing up ports.