IMOU camera with Dahua NVR

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
 
Unfortunately, I can't remember exactly why Dahua released the update for my EOL Dahua NVR2108-I in the summer of 2024, but it was definitely related to a (serious) security vulnerability, and I believe it affected various Dahua products. I was wondering myself why Dahua was suddenly releasing new firmware for a product that had been EOL for about two years and for which there hadn't been any firmware updates in that time. :) That's why I had considered and checked whether I should or even needed to install the firmware update. Especially with Dahua products, I only do that if I have a good reason to do so. :lol:
But regardless of that, I would still install a firmware version from 2024 for the NVR4116-EI instead of the very old one from 2023. :)
 
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

For 4116-EI, none of the version from 2024 worked for me. Then I tried 230621, and it was able to successfully add the Imou cameras over private protocol.
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Apart from missing those security upgrades, it also lacks couple of new features. The GUI of new version has slight differences. Anyways I will evaluate to what should I keep. Thank you for the help sir!
 
none of the version from 2024 worked for me.
I find it rather unusual that none of the 2024 firmware versions could be installed as a downgrade, but the old one from 2023 could. But okay, I don't have a DHI-NVR4xxx-EI here, so I can't say anything more about that. :)