i have some problems with my d4. don`t remember passwords used to log to the unit through the ethernet. my hyperterminal connect to the recorder through the serial 2, deleting those files that some people talk about doen`t change anything. After that i still cannot log to the recorder. Can anyone tell me how to change passwords in this recorder when i know old password? i have 2 recorders and i know passwords to the second one but i dont know how to change them.