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I updated my NVR5216-4ks2 today from 4.002.0000000.5 to 4.002.0000000.6 (dated 15.11.2022) which I downloaded from dahuawiki.com/images/Files/Firmware Unfortunately does this "new" Firmware not remove the bug which I had reported to DAHUA through dealer and distributor. There is also no release...

"My" dealer seems to have downgraded to another 4.002.x , i will try to check tomorrow.

Firmware downgrade impossible if from 4.002.x to 4.001.y told me "my" dealer in Germany and another outside Europe. That downgrade-block seems to be for technical protection of the NVR. Similarities with other models and firmwares from other manufacturers. At least I came to the conclusion not...

Did you report the problem to the dealer in writing (email) from whom you had bought the NVR? When and in which country had you bought the NVR? Had the problem already been there with an older firmware? My NVR had earlier a firmware 4.001.x from summer 2021 and that older firmware had no...

Hello People! According to info which i have received today from a dealer - who had received the info from his distributor who got the info from DAHUA - has this firmware a fix for the problem reported by ME recently. Means that the NVR should no longer loose the configuration regarding the...

Thanks for the link!!! According to my todays knowledge should this firmware at least fix the problem which I had reported to DAHUA via dealer/distributor, namely the configuration loss regarding external alarm input (at ipcam) after powerloss of NVR. Whether this firmware fixes also other...

Did you rollback from 4.002.xxx to 4.001.yyy ? Did you use the HDMI-interface (with a monitor) or the LAN-port and Weblogin thru the ip-address of the nvr and a windows-pc?

how did you roll-back? I got also a problem and need to t Excuse me, but which interface you mean - HDMI or LAN

how did you roll-back? I got also a problem and need to t Please forgive me that I ask some more questions... USB-stick formatted by fat32? With "NVR interface" you meant the HDMI or the LAN (RJ45) port? The NVR might have more than one USB port - which one you used? What do you mean with...

How did you succeed in downgrading from 4.002.x to t.001.y ? Could you perhaps describe me that step by step? RS-232 card, nullmodem-cable, and software (terminal-emulator and tftp-server) i have already installed on my windows-pc. How to start now from here? Your help would be appreciated very...

In my case: I have configured the NVR5216-4ks2 that it records for a minute the mainstream under h.265 , VBR, maximum resolution and quality to its hdd (wd purple). Trigger to such record is a change (e.g. from nc to no) in the external alarm input at a registered12mp-dome. Later i found out...

How did you downgrade the firmware?

I now know this.....and I should have known it before....

I had upgraded the firmware of my NVR5216-4ks2 from 4.001.0000007.1 dated 210827 to 4.002.0000000.5 dated 220729. After that upgrade a feature causes a problem with my NVR (about 2 1/2 years old, latest version) and I do need to roll back. I have installed TFTP-server (several programs...

Could you please send me a detailed description how to downgrade the firmware Because I need to do it also. I have prepared already a rs-232-port, a TFTP-server and terminal emulator (PuTTY).

Did you meanwhile succeed to downgrade the firmware?

I also recently upgraded my nvr5216-4ks2 firmware from 4.001.xxxx to 4.002.000000.5.R and after that the external alarm inputs of all my DAHUA-cams (different models, 1-3 years old) are loosing the configuration inside the nvr setting after one has rebooted the nvr (sometimes 2 reboots needed)...

Hello Everybody! Perhaps someone could help me ? I have a DAHUA NVR5216-4ks2 (about 2 1/2 years old, latest version). I have recently upgraded the firmware from 4.001.0000007.1 dated 210827 to 4.002.0000000.5 dated 220729 thru its webinterface. After that upgrade everything still works fine...

How did you "manage to downgrade" which you wrote? If I try it, any attempt stops at 50%. I tried it using USB-stick, ConfigTool, SmartPSS and via the Browser/Website of NVR5216-4ks2. Always stops at 50%.

Hello! I got also problems with my NVR5216-4ks2 after updating to 4.002.0000000.5.R.220729. How did you manage to roll-back to an earliert firmware? Whenever I tried that, the "upgrade" process stopped at 50% reporting update failure.

I have other problems with that brandnew firmware. I tried to "downgrade" it to a previous version, preferable 4.001.0000007.1.R.210827, but that firmware update (actually a trial of downgrade...) always stopped at around 50% of the process, reporting update failure. I tried it using the webpage...

I can only read and write English or German, not Russian or alike

I can put a USB with the bin-file, FAT32 formatted, into one of the USB-ports of the NVR. I can connect the NVR thru HDMI with my external monitor. I then can start update. However, using any former firmware, the update fails also using this method. Just to make clear: My NVR is not bricked, I...

Perhaps someone could help me? I have upgraded the firmware of my NVR5216-4ks2 to V4.002.0000000.5.R.220729 But that firmware has a heavy bug and I want to go back to a previous firmware. When trying that, the "upgrade"-process stops at 50%. I tried both configtool and webpage. After that...

Hi Andy, does that Firmware work for HDBW5830E-P , too? kind regards

Reason is that I want to switch on or off the tripwire(s) and or intrusion detection(s) from a remote location via my smartphone (Android) in case too many false alarms are coming because of e.g. sun-shadow-effects. When being abroad in a remote location, I rarely have my notebook with me. I...

Hello, I am looking for an API-HTTP-command to simply switch tripwire on or off and to switch intrusion detect on or off. I do not need to configure tripwires or intrusion detect by API - they all would be pre-configured already. Unfortunately does the gDMSS-API (pro) not allow any...

First i wish you a Happy New Year. Question: Could you write a HikPack for the G1-series working with DS-2CD2785FWD-ISZ and 2185FWD-IS, so that i could downgrade from 5.5.0 to 5.4.6 resp. 5.4.5 ? Or could you downgrade it for me if i would send you the two cameras? If so, what would that...