RenoH

I bought a SN-NVR-6004SL and the password was already set as I got it second-hand. I tried removing the battery on the board overnight, but the password remains. I've tried contacting szsinocam on facebook (only contact I could find aside from sales) but I haven't heard anything from them. Is there a way to reset this password? Any help would be appreciated.

To be honest with you, I don't remember anything about this as it was 6 1/2 years ago. I don't even remember owning this but I'm sure I did. I'm guessing I just gave up and probably recycled the thing.