How to setup audio in the XVR?

How to backup video files to flash disk on XVR?

Why is the camera showing a "PAL/NTSC Error" on the XVR display?

Why isn't my 5MP Analog Camera displaying any video feed on the XVR?

How to solve XVR preview flickering issue?

How to recover the devices (NVR, XVR & DVR) using recovery firmware?

How can reset the XVR password ?

My NVR/XVR is freeze on the boot screen. How to solve this?