Help with N1 Protocol system. HI3536D based NVR + Cameras

[recfpver]

Didn't get much luck on ipcamtalk so hoping for better luck here

https://ipcamtalk.com/threads/what-is-n ... nvr.42522/

Got tantalising close but no cigar getting it working with anything else.

Xiongmai OEM hardware by the looks.

Any help appreciated.