If your DVR is completely dead (no lights, no HDMI signal, no beep), you have bricked it. Do not throw it away.
Incorrect firmware can brick your DVR. Only use firmware from your DVR’s brand/seller. dvr-g608l-n firmware update
Outdated firmware on DVR-G608L-N is a IoT device. Known exploits: If your DVR is completely dead (no lights,