bigredfish
Known around here
I wouldn't use this firmware from 2023 because there was a serious security vulnerability in Dahua cameras and NVRs in 2024, which even led to a firmware update for end-of-life devices – like my NVR2108-I, for example. If so, then a firmware after June 2024. So in this case, version 240716. The security vulnerability should have been fixed by that one. The firmware for my NVR2108-I, which fixed the security vulnerability, is dated July 29, 2024, and with this firmware, my Imou cameras are still directly recognized by my NVR2108-I and don't need to be integrated via Onvif. Of course, I don't know if this also applies to your model.
Should fit. No guarantee!
Index of /Firmwares/Recorders/NVR/_NVR4xxx-EI/old
View attachment 222938
I think that vulnerability had to do with P2P server implementation, not the camera/nvr so much. SmartPSS was a problem and is why it was discontinued