Kochi974 0 Posted August 17, 2017 Hello, I'm trying to reset admin password on my dvr. I already tried to remove battery (3v) -- same issue. Any idea ? The model is : DVR04PE-I (1U 3100H Series) P/N : 1.0.01.71.1795 SN : TZA3AL07000274 12V - 2A Thank you very much anyway. /Kochi Share this post Link to post Share on other sites