Hi, I just recently "inherited" a house with a DVR + 4 cameras from Dahua, which I (for a lack of experience) cannot identify. It was not really used and no one took care of the system. So, I connected it to internal network, I got a bit familiar with ConfigTool, fixed basics like time etc. and now I'm looking for a ways to put it to good use. I really would like to upgrade firmware to most current version but this is where I got lost. ConfigTool identifies type and model as TI810X|0, which was not much help for me. How do I find what firmware (http://www.dahuasecurity.com/firmware_111.html) I should use for that? Is is technically DVR or NVR? And what is actual product name of the device? Any help appreciated.