Grahamcu2 0 Posted June 16, 2014 Hi. I have tried all factory default passwords and none will unlock the unit. I must have changed when i installed and did not write it in the user manual which I have. H 256 four channel DVR Share this post Link to post Share on other sites
milkisbad 0 Posted June 16, 2014 Got a model number? Or a picture of the menu on the monitor? Model numbers can be found beneath or behind the DVR. Share this post Link to post Share on other sites
