I have two DVR722, one has got the update of L6.76 and the other has not. So how do i get the other one to update. I have tried to unplug it for a little bit and then plug it back in, and nothing. I have tried to change the update time to force update when i was setting in front of it, it would go though its thing and reboot and still not update......
You don't. They send it to your particular "serial number" when they choose to.