Speedstream 5861 tftp configs

[ngazzano]

I've got over 100 5861 routers out in the field, and rather than have to remember the config for each one...is there an option to tftp the saved config from the router to a tftp server? I've tried

copy kernel.f2k tftp@x.x.x.x:filename

and all I get is "unable to open specified file"

Is there another command that I could use to backup and restore configs to the 5861?