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  1. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    I originally connected the USB dongle using an USB extension cord. I kept getting gibberish on the screen. Try to connect the USB dongle directly to the USB port of your PC. Also, if you're using Windows, make sure that the connection settings in device manager match the ones in Putty...
  2. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    If you have the camera 4431CA like mine, please refer to the post Dahua Firmware Mod Kit + Modded Dahua Firmware cor35vet told me the pinholes from left to right are RX, TX, GND, VCC If you get gibberish on the screen, please make sure to configure the serial connection speed as indicated in...
  3. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    Thanks very much for the info. I can access the IVS features now.
  4. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    I got it working finally, by connecting the ground pin of the USB dongle to the camera's ground pinhole. Then, the camera took my keyboard inputs. I could then successfully restore my bricked camera. Thank you so much for your help. By the way, I noticed that the new firmware dated...
  5. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    Yes, on the attached screen shot, there are some blocky characters. Everytime I hit * , I get one more blocky character. I even tried using other serial terminal programs like Termite. Same result. I don't know if special settings are needed to send an input to the camera? What terminal...
  6. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    I finally got a chance to get a USB-TTL dongle. I could make the connection successfully and get the terminal screen. However, I couldn't get to the command shell by holding * I even started holding the * key before powering up the camera. I am using Putty as the serial terminal client. Can...
  7. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    Thanks very much everyone for your advice. I guess I need to wait for the proper adapter ordered from eBay. Hopefully, will get it by the end of the month.
  8. K

    Dahua IPC unbricking / recovery over serial UART and TFTP

    Hi cor35vet, I finally got a chance to get a USB-to-RS232 adapter and make the connection. However, with the camera powered on, I can never get any response from the Putty terminal screen. Here is my connection setup. Please advise. Thanks a lot.
  9. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    I found a local store that sells electronic parts. I would like to know if I can use the following to restore my camera. USB To RS232 TTL UART Auto Converter Cable Adapter Module For Arduino Please advise. Thanks very much for your help.
  10. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thanks to everyone for your valuable advice. The US seller doesn't ship to Canada. I ordered the items from the Chinese sellers. Guess I'll have to wait until the end of next month. Will keep you posted.
  11. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Hi cor35vet, I found this item from eBay. It's a 5-pin dongle with cables. Does it matter if the dongle doesn't have the DTR pin? USB 2.0 to TTL UART Module 5pin Serial Converter CP2102 STC Replace FT232 | eBay Thanks for your help.
  12. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thanks for the hint. I would love to get the camera going again asap. However, I live in Canada and may not be able to get things from Amazon.com. Amazon.ca has the dongle but it's sold by 3rd party sellers. The item is also shipped from China (>15 business days).
  13. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thanks for your expert advice. You guys are super. I'll order the CP2102 dongle then. It'll be a learning experience for me. Will keep you posted.
  14. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thanks very much cor35vet for your help. I just opened up my camera. The circuit board looks different than yours. Please see attached. In the top right corner, there are two available places near the screw where I can attach the wires. One has two holes and the other one has 4 holes. I...
  15. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Hi cor35vet, I finally had a chance to take down the camera from the eave. This time, when I tried to start it up, I could see that the IR lights stayed on all the time. What does that mean? Does it mean the bootloader is not functional? Please let me know what can be done. Thanks a lot for...
  16. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Hi cor35vet, my camera may be bricked. I am considering to use TFTP to recover it. Do you have the TFTP firmware for 4431CA? I couldn't find it from Dahua. Thank you very much.
  17. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Just tried and put my PC on the same subnet. Still doesn't work. Anything else I can try? Thanks.
  18. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thanks for your advice. However, even I just power up the camera, I still cannot get any ping response from it. The camera's IP was 192.168.2.200 when it was working. Could the firmware upgrade reset the IP address? Thanks.
  19. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    I downloaded the new firmware when I got your message, as I subscribed to the thread. The IR lights stayed on for a moment when starting the camera, then they turned off. Can you please advise me what to do? Thanks a lot.
  20. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thanks a lot cor35vet for your great work. I just flashed the firmware to my 4431CA. Although it said the upgrade had been successful, after the auto reboot, I can no longer access my camera via the same IP. I cannot even get any ping response from my camera. Can you please advise me what to...
  21. K

    Dahua Firmware Mod Kit + Modded Dahua Firmware

    Thanks a lot for the great firmware. It works pretty well so far. However, if I turn on "Smart codec", the IVS functions become disabled and inaccessible. Is this by design? Thanks.
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