Recent content by nhocti

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    Dahua NVR2x, 4x series with SAS drive

    Thanks @mat200 and @IAmATeaf . There is a document for this (link https://www.dahuasecurity.com/asset/upload/download/20180122/HDD_Compatible_list_for_Dahua_Video_Recorder_20180118_En.pdf) but it states that device with dual controller would support SAS. I think those would be pro version/high...
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    Dahua NVR2x, 4x series with SAS drive

    Hi all, I have searched google and dahua wiki page but not sure about Dahua NVR 1x, 2x and 4x (i.e DH-NVR2108) which can support SAS drive or not. Any one has ever tried to put SAS drive (3TB, 4TB, WD or HGST) on Dahua NVR? Is the drive recognised or even work? Or simply does not work at all...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    If you're in HCM city, i can help you. But only for personal usage only. Actually, you can use the app on pc to setup the nvr and use mobile app to view. They support both English ang Vietnamese language
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Not sure why do you want to upgrade firmware for a camera which has already supported multiple languages. From the link of seller, I believe the camera firmware is newer than the one in first post.
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Even when you are success in modifying the firmware, there is no way to install it on the device. Latest firmware checks its folder by the checksum, and overall, the sign.img. So if you want to modify any file, you have to make a checksum again for that folder, and sign the firmware. As...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Yes, I turned the P2P off. I also setup a private VPN server to access to these cameras so I disable all P2P, uPNP, everything that may connects to Dahua or internet. I will try to look at which IP the camera try to connect to and get you back soon. The the strange thing is that I could not see...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    I got IPC-HFW4431R-Z camera from China market, loaded it with @cor35vet firmware from topic Dahua Firmware Mod Kit + Modded Dahua Firmware And found that the camera try to connect to internet and use a lot of bandwidth (over 100Kb/s), 400MB/less than 1 hour. If I change the DNS to 1.0.0.1 then...
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    Dahua H2.65 IPC-HFW4431R-Z 2.8mm ~12mm

    I got IPC-HFW4431R-Z camera from China market, loaded it with @cor35vet firmware from topic Dahua Firmware Mod Kit + Modded Dahua Firmware And found that the camera try to connect to internet and use a lot of bandwidth (over 100Kb/s), 400MB/less than 1 hour. If I change the DNS to 1.0.0.1 then...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Dahua has made data signature check for all file in its latest firmware. Not sure if we can flash the img file via console after modifying the content... Update: after modifying, flashing new firmware, device keeps rebooting :)
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Update: Ah, the firmware file from dahuasecurity can be extracted OK, but the file from dahuatech is the one I get the issue below: http://download.dahuatech.com/kitDownload.php?filepath=DH_NVR4XXX-4KS2_Chn_V3.215.0000000.1.R.170902.bin WARNING Autodetected config: NVR4XXX-4KS2 Traceback (most...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Strange, I got error as below, not for missing NVR4XXX-4KS2 setting. I created this setting couple month and it worked just fine with old firmware . The new firmware (Sep 2, 2017) change from ZX to K or something else compression Update: Ah, the firmware file from dahuasecurity can be extracted...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Latest Dahua firmwares' header has been changed and the toolkit could not extract anymore. I also use binwalk/7zip but unsuccessful. @cor35vet : can you take a look at it...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Flash successfully and load with English UI :). Found that NVR call a file name contain its serial number when booting. Next time I will configure via TFTP for flashing...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    When vcc and ground pins were shorted, i heard small voice of sthing like a click (or maybe my heartbeat lol), I thought nvr is bricked but it booted up again. I checked and it seemed it still could connect to camera and hdd, record video, etc... Everything seems fine. Actually, I shorted those...
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    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thank you @cor35vet . I have a question, if I connect VCC pin to the ground of serial port, what will happen? Do I burn sthing? Because when trying to detect the port, I accidentially connect the vcc pin to the ground (the metal pointer of multimetters is too big compared to posion of 2 pins vcc...
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