Dear Sir.,
I have one of your dvrs from 4 or 5 years ago. I installed for a client. I've bought and installed quite a few of your units. About 2 years ago, or somewhere around the start of pandemic we lost remote view. At that time we were told by store that I purchased unit from was because the government was closing sites run by hikvision. At that time I didn't even realize that wait this is not Chinese dvr, but is Korean.. Anyway I feel as if perhaps it has too old of firmware. Yoy use to have a ktncusa site, but is gone? So my questions to you are as follows
1. Where to download fw?
2. Do I need to update one firmware at a time, or can I skip and just install newest version?
3. I'm pretty sure I remember what is the password, but If I am wrong how to do reset, I don't mind doing full reset if easier? I know he forgot it 3 years ago and after I couple tries we got it. Lol
I think that will do it for now. Do you still have any tech support in USA anymore? Thanks for your help in this matter.

Best regards,
Don