Hi I have 3 x Cisco 837 routers that have come back to me from our ISP. I am not able to reset these and clear the startup configs. Some of them I was able to remove the flash memory which was enough for me to get into rommon mode to clear the startup config but not these 3!! I have tried all the CTRL-BRK sequences at powerup, using Tera Term, Hyper Terminal and NetTerm It appears the config is stored in NVRAM and there is nothing I can do to clear it. I have cracked the lid but there doesn't appear to be anyway of shorting and / or clearing the NVRAM
Does anyone know of a way I can clear the startup config?