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I have the same camera and I'm also facing an issue where I also need to reflash the firmware ( Corvet35 or Chinese original). Unfortunately the link from Corvet35s thread isn't working. Can anyone provide this firmware file? Thanks in advance!

Does anyone still have the above firmware for IPC-HX4X2X-Themis (the link isn't working for me)? My camera stopped working suddenly but does have port 23 and 3800 available, so I want to try a reflash.

Cool to know the db1 can work simultaneously with the mechanical AND wireless chime. Now the question is: which wireless chime is recommended? (The official ezviz chime...or a third party wireless chime)

I have the db1 running for exactly one year in combination with a mechanical chime (using the power kit) just fine. Recently I've been looking at the wireless ezviz chime so I can have another chime on the second floor (the mechanical chime isn't that loud). My question: can the db1 work...

I purchased an ezvid db1 end of November (2 months ago) and got it working fine with the power kit and my existing mechanical chime. This week though I noticed the db1 is not always triggering the chime consistently anymore (but luckily it is always triggering the phone ring. Notifications also...

Thank you for this great info! This explains how to enable/disable a certain rule by http api. Do you also know how to enable/disable the whole ivs feature on the camera by http api? (Instead of per rule)

For the people who are using these (unmodified) chinese firmwares: How are you using the camera settings as I assume they are all in Chinese language? Or are you all able to read chinese? :)

Hi all, aliexpress is having their 'black friday' type of event called '11.11' with deals in all kinds of categories. Did anyone find any good ipcam deals? These two deals were noticed by me: Dahua 4431ca for $46.61: DaHua IP Camera IPC HDW4431C A POE Network Mini Dome Camera With Built in...

I couldn't get the dahua cam webpage working with the latest ESR version (version 52) aswell (I got the exact same behaviour as GaryOkie). In the end I just installed an older ESR version (from Directory Listing: /pub/firefox/releases/ ) and disabled automatic updates. The dahua page is working...

Ofcourse, the blue iris functionality in tinycam was for live viewing only right?

Does push notifications on gDMSS (eg tripwire/IVS) also work with pc-nvr (bundled with smartpss)? Unfortunately tinycam cannot do this with dahua nvr (it does support blue iris playback i believe).

VLC seems to have a mosaic plugin to show multiple streams in a grid. I believe this is the perfect solution if you only want a viewer application and don't want to install big programs that come with unwanted functionalities such as recording, cam configurations etc Check out: RTSP mosaic...

My camera did revert to Chinese after the firmware flash (in the Chrome browser. Strangely not in IE). I believe this was because I reverted my settings to default. After changing the language setting (in the general section) to English (the second entry, strangely there were two English entries...

I went ahead and flashed cor35vets modified firmware for THEMIS and as I hoped, the crashes with SmartPSS 2 were solved! So if anyone has the problem of camera reboots/crashes in combination with the new smartPSS/PC-NVR,...give the new firmware a try as it solved my problem.

I went ahead and flashed cor35vets modified firmware and as I hoped, the crashes with SmartPSS 2 were solved! So if anyone has the problem of camera reboots/crashes in combination with the new smartPSS/PC-NVR,...give the new firmware a try as it solved my problem.

Most Dahua cams have the ability to automatically change between color mode and infrared based on the setting 'D&N sensitivity'. If you are unfamiliar with this, then see the excerpt from dahuawiki below. When I put D&N on auto with the sensitivity on low, my 4421c camera switches to infrared...

I just flashed DH_IPC-HX4X2X-Themis.bin on my 4421c and I can confirm that it works! Thank you cor35vet!!! I just did a restore of default settings and then flashed the firmware through the WebUI. One minor detail is that the language after the flash was initially on Chinese (in Chrome, but not...

Can anyone please verify if SmartPSS v2 is working with the 4421c? I'm trying it, but it keeps crashing my cams ( see herefor the thread ) . Is SmartPSS v2 maybe not for second gen Themis cameras? SmartPss 1.16 still works great btw.

I also want to suggest asus-wrt . It really beats the stock firmware on all points (I'm currently using it on my r7000 with openvpn).

Which version did you specifically install? 2017-r1?

Thank you for this comparison. That is quite nice result from the Gadinan! I don't see major quality difference between the screenshots (maybe like 10% difference) while the price difference between the cams is ike 50%.

I decided to try the new smartPSS version 2.00.1 after seeing the nice pictures from nayr. Unfortunately it keeps rebooting my four Dahua 4421c cameras (Chinese model, but bought with english language from Aliexpress). This happens once I add the cameras to PC-NVR 3.0 or once I go to the config...

That's interesting. I thought the demo had all functionalities and was only limited by a watermark and 15 days trial. I also didn't expect direct-to-disc to be the reason for the high cpu usage since recording and motion is disabled in my settings. Looks like it will be very difficult to...

I have four Dahua 4421c camera's and I decided to give Blue Iris a try. My reasons for trying out Blue Iris over SmartPSS is stated in the spoiler secion. Unfortunately after adding the four Dahua camera's to BI (without motion or recording settings enabled) I get a huge continuous CPU...

Check post #18 of this thread: https://www.ipcamtalk.com/showthread.php/13591-Dahua-Firmware-Mod-Kit-Modded-Dahua-Firmware cor35vet is doing some legendary stuff there! And he is so kind to also think of us thermis-users. Hmmm, interesting. I wonder what dahua recommends as resetting...

Thanks for the reply fenderman. That's quite a powerfull feature! Can you select the profile in the blue iris android app (the official android app is probably necessary for this feature, or can tinycam also playback history recordings with the profile)? I assume the reencoding will be done...

This probably isn't possible with SmartPSS, but I wonder... I'm currently recording the main (high-res) stream of my Dahua cam 24/7 with SmartPSS. I want to keep recording this high-res stream so I can have the best picture in case of an emergency. I'd also like to record the second (lower-res)...

I wonder now if this camera has a reset button inside. I know other models have one behind the lens:

Thank you for the answer and amazing work. Looks like things are about to get very interesting in the Dahua-universe (thanks to your findings everything is now wide-open). I would have volunteered to experiment on my Themis camera (4421c) so we could get a modified themis-firmware too, but...

You are godlike for acquiring this information and sharing the firmware! One question out of curiosity: I understand from the above text that the checks are in the firmware and in the application server software (sonia). Does that mean that once your modified firmware is flashed (and so sonia...