sunyakram

hi all hope you are doing well. I've problem with Chinese made dvr, it record only 2 minutes video then change system time back 2 minutes and replace existing 2 minutes recording, in a loop. The hard drive is 1TB, Changing cell and restoring dvr didn't work. I can't find it's firmware anywhere please help me to fix it and guide me what to do. Or if you have its firmware file please share it with me. Thanks in advance.

Hi all I'm sunny from Pakistan, stepped in cctv related work a year ago, still learning day by day. Hope this forum helps me understand the things i don't know yet.