I've got 1 L120 that won't update it's BIOS.  I get into the setup, click over to the "Update" tab, click update, and enter the updateme password.  It tries, but comes back with a message "Can't update BIOS.  Can't find bootsrv or update file".  I've updated other devices, presumably from the same boot server.  (We've got 5 machines acting as servers)

I'm also unable to change the network mask that it's looking for.  Would that have anything to do with this problem?  Is there any way to change its' boot server?