Huper Dvr CVD-82: lost admin password

[arkar latt]

Hi everyone..

I lost the admin password for huper dvr model: cvd-82....
no way to track it back..
but i able to log in with user1, user2 and user3...
their passwords are 11111,22222,33333.. follow the sequence..

so i tried admin password as ( 00000,55555,12345, Etc...)
no way ..

i tried take out battery from main board and restart then log in..
still no way.

hopefully some one could help me for that..

i just curious.. how to reset the default... or any way to skip password...

Thanks