THE HILOOK DUBAI, IP CAMERA, DVR, NVR DIARIES

I bought a 2nd hand Hilook DVR and cameras lately. get more info I naively considered manufacturing unit resetting the NVR will be a good idea, now the cameras usually are not staying recognised. I have not too long ago upgraded the NVR to an eight channel M collection as I need to insert a fifth camera so unfortunately can't do any testing for yo