Sorry, poor choice of words I guess. I mean it's embedded within the filesystem. If you had root or serial access to the device, then you could probably very ea

Sorry, poor choice of words I guess. I mean it's embedded within the filesystem. If you had root or serial access to the device, then you could probably very easily replace it, but at that point you could also just write the firmware anyway. The checks are only important for flashing via the Web UI.