I have the CNM Secure 4 port 500gb model (All very generic far eastern electronics - not even a model number bought from CPC/Farnell in 2011.), and the Admin password had reset itself for some unknown reason.
Having lost the manual, I tried all the usual suspects:
000000
111111
519070
020818
ecdGqv
12888
I tried the number generators from https://dl.dropboxusercontent.com/u/5005588/dvr-pass.zip without success, and even tried Telnet to "root" using password xc35111 and none worked.
In the end, guessing the password 888888 worked for me.
One thing I did learn, removing the "BIOS" battery just resets the system clock, not the Admin password.
One other thing, note when connecting remotely to this model that the username is case sensitive as well as the password, and you must also open the ports 5000, 5001 and 6003 (For mobile phone access) in the router firewall services.
Hope this helps someone.
John T.
