I think I can help you. I have a set of files for boatloader to mini NVR. I also have 4 sets of update files from urcctv, hdcctv, Cortier and suneyes. They all work but the ones from suneyes works best. My problem is that none of them seems to be able to get a usb hdd to work. I have several hdd's also a brand new one WD Elements 1TB.
Give me a email address and I send you.
Would you mind to share the files with others?