Recent content by keithshlo

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...

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...

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

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...

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...

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...

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.

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.

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.

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.

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.

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).

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.

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...

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...