<p>The post Dahua DVR/NVR Hard Reset Video first appeared on NVR IPCAMERA SECURITY.</p>

After this course, you will be able to:

Know how to use tools to get the on-site information.

Master the basic knowledge to test the device.

Get the first on-site information to headquarter and provide a fast respond to customer end.

【Firmware Upgrade Method for HDCVI DVR 】

Firmware Check

You can check if the firmware is the latest firmware from the interface below. If it is not the latest one, we always suggest our customers upgrade to the latest one.

Path: MANAGEMENT-SYSTEM-UPGRADE-Online Upgrade

Firmware Upgrading From Web Client

You can upgrade the device firmware from the web interface.

Path: MANAGEMENT-SYSTEM-UPGRADE-System Upgrade

Firmware Upgrading via Configtool

You can use the ConfigTool to upgrade the device without login.

Firmware Upgrading From Local Menu

Prepare one USB flash disk and copy the firmware to the USB flash disk. Insert the USB storage device containing the upgrade files into the USB port of the device.

Path: Main Menu > SYSTEM > UPGRADE

Click System Upgrade.

Click the file that you want to upgrade.

Click Start.

Local U-boot Upgrading

U-boot is a very simple and easy way to upgrade the device.

Prepare one U disk.

Decompress the firmware file and put u-boot.bin.img and update.img to the root file of the U disk.

Shut down the device, insert the U disk to the USB port of the device.

Power on the device. The system will upgrade it automatically. Then pull out the U disk.

NOTE: U-boot is not applicable for N8 platform XVR.

TFTP Serial Port Upgrade

For some difficult cases, the CVI DVR is down or failed to upgrade in other ways, then we can use TFTP serial port upgrade.

If the computer has RS232 serial port, then no need the drive and USB-232 converter.

If the computer doesn’t have RS232 serial port, then first install the drive of USB-232 converter.

Insert the USB-232 converter to the computer, it will automatically identify and run it .

You can make sure the serial port number from the path below:

Right click computer-attributes- device management-port(COM and PLT)

Check the serial port number

RS-232 Connection

Please see the connection between the recorder and computer as below:

TFTP Serial Port Upgrade

Install secureCRT and run it, create a serial port connection.

Click File-Quick Connection

Choose protocol as serial protocol

Set the port as the real port number of the serial port

Make sure the data input is the same with the ones on the recorder.

Select Baud rate, which is 115200 by default.

Data bits is 8 by default.

Untick  RTS/CTS, by default, it is ticked.

Enter serial window, reboot CVI DVR manually, and screen will be printed as below:

When it shows Hit any key to stop autoboot, input 3 “*”quickly in 1 second, otherwise you cannot  enter the next # mode.

When you enter the # mode successfully, then you can edit the serial values.

setenv ipaddr <IP address of  CVI DVR>

setenv netmask <netmask of CVI DVR>

setenv gatewayip <gateway ip of CVIDVR>

saveenv

setenv serverip (server ip of TFTP server ip>

Install and run TFTP server, make sure the CVI DVR and TFTP server reach each other or can ping.

Get the correct firmware and decompress it, put all the files in one path and choose this path it TFTP.

To run the firmware, enter run da

After the upgrading finished, enter run up

NOTE: U-boot is not applicable for N8 platform XVR

Enter boot to reboot the DVR. Close TFTP server.

Firmware Upgrade for CVI Camera

You can upgrade the CVI camera via local menu of CVI DVR

Main Menu > CAMERA > COAXIAL UPGRADE

You need to insert the USB storage device that contains the upgrading files.

Click Browse.

Select the upgrade file and then click OK.

Select the check box of the channel that you want to upgrade.

Click Start Upgrade.

If the upgrading is successful, the system pops up a message indicating the upgrading is completed.

【VLC Media Player Introduction 】

VLC media player can play RTSP real-time transmit stream, helping us troubleshoot the docking problem when connecting the IPC to XVR.

URL format is as follows:

rtsp://<User Name>:<Password>@<IP Address>:<Port>/cam/realmonitor?channel=1&subtype=0
channel: Channel, 1-768; subtype: Code-Stream Type, Main Stream 0, Sub Stream 1.

For example: rtsp://admin:admin123@192.168.1.111: 554/cam/realmonitor?channel=1&subtype=0

You can also check the RTSP port number and stream format from web browser

Path: MANAGEMENT-NETORK -CONNECTION

Install VLC media player.

Run VLC media player.

Click Media and choose open network stream

Play the video and check if it is the problem of XVR or IPC.

If the VLC stream from the IPC is normal, then we can judge that it is the problem of XVR. We suggest you capture a package for analysis.

Please filter IP package during the process to make the package small.

First start capturing, then use VLC to call the stream, make sure the whole RTSP connection process is captured.

【Wireshark】

lInstall Wireshark and run it.

Choose the net card you want to capture and click Start.

It will display the live capturing interface.

After the problem recurring, stop capturing and save it.

IP Filter Function

If you want to filter the IP address of CVI DVR, then you can filter:

ip.addr= =172.11.4.37

If you want to filter 2 IP address of both CVI DVR and IPC, then you can filter:

ip.addr==172.11.4.37 && ip.addr==10.172.18.125

【RS232 Serial Port Printing】

For some difficult cases, we can get its serial port serial printing information for analysis.

If the computer has RS232 serial port, then no need the drive and USB-232 converter.

If the computer doesn’t have RS232 serial port, then first install the drive of USB-232 converter.

Insert the USB-232 converter to the computer, it will automatically identify and run it .

You can make sure the serial port number from the path below:

Right click computer-attributes- device management-port(COM and PLT)

RS-232 Connection

lPlease see the connection between the recorder and computer as below:

Install secureCRT and run it, create a serial port connection.

Click File-Quick Connection

Choose protocol as serial

Set the port as the real port number of the serial port

Make sure the data input is the same with the ones on the recorder.

Select Baud rate, which is 115200 by default.

Data bits is 8 by default.

Untick  RTS/CTS, by default, it is ticked.

Enter serial window, reboot CVI DVR manually, and screen will be printed as below:

When it shows Hit any key to stop autoboot, input 3 “*”quickly in 1 second, otherwise you cannot  enter the next # mode.

When you enter the # mode successfully, then you can edit the serial values.

set dh_keyboard 0

Save

boot.

The device will reboot and print all the serial log automatically.

The log should cover the time when the problem recur, make the log short and precise.

After the operation is done, please don’t forget to set the dh_keyboard value back to 1.

【USB Flash Disk Printing】

Though RS232 log info is more complete, in some conditions, we also recommend USB flash disk upgrading as it is simple and easy to operate it.

Make sure dh_keyboard=1, by default, its value is 1. Prepare one USB flash disk.

Insert the USB flash disk before power on CVI DVR.

Power it on, when the problem recurs, shut down the device via menu manually.

Take the USB disk and copy all the files in the USB disk and send it to R&D.

Capturing Packet and Backing up in USB Flash Disk

For some cases, we also need to capture packets to analyze, for example, device becomes abnormal after connecting the network cable, video lag when remote visit. Generally speaking, we can locate all the causes via RS232 interface, very few cases needs packet capture.

Path: Main Menu > INFO > NETWORK > Network Test

Connect a USB storage device to the Device.

Click Refresh.

The Device starts detecting the USB storage device and displays its name in the Device Name box.

Select the route of the data that you want to capture and back up.

In the Network Sniffer Packet Backup area, click Browse.

Select the route.

Click the icon to start packet capturing and backing up.

Only the data packet of one LAN can be captured at one time.

After capturing starts, you can exit the Test interface to perform other operations such as web login and monitoring.

Click the icon to stop capturing.

The backup data is saved in the selected route under the naming style “LAN name-time.pcap.“ You can open it by using Wireshark software.

【Summary】

Know and master the tools use instruction for troubleshooting a HDCVI product.

Introduce several upgrading methods, wireshark, VLC and log printing methods.

<p>The post Firmware Upgrade Method All Model first appeared on NVR IPCAMERA SECURITY.</p>

Prerequisites

• Dahua XVR (GUI4.0) running the latest firmware.
• A display connected to the Dahua recorder.

Step by Step Instruction

1. Know old password

• To modify device password, enter MAIN MENU-> ACCOUNT. Here take admin as an example.

(1) Click in the row of “admin”.

(2) Tick in “Modify Password”, for default the box is gray; for other user the box is highlighted.

(3) Enter old password and desired new password.

(4) For safety, please create a strong password. It’s recommended to change the password periodically especially in the high security system.

(5) Click “OK” to complete password reset.

2. Forget old password(Reset the password by email or security questions)

(1) Click. 

(2) If you have not input email address information when you are initializing the device, Please input an email address and then click Next button.

(3) There are two ways to reset the password: Scan QR code and reset by email/security questions (local menu only)

(4) Use the APP to scan QR code to get encryption strings, and then send the strings to support_rpwd@global.dahuatech.com. Then you can get the Security code, input the code, then you can reset the password.

(5) Answer the question you’ve ever set.

(6) If the answer is right, we can reset the password now.

(7) The dialogue pops up to ask whether sync the remote device IP if there is an IP channel.

(8) Successfully modifying the password.

3. Forget old password(Reset the password by Reset Button)

(1) Disconnect the Device from power source, and then remove the cover panel.

(2) Find the reset button on the mainboard, and then press and hold the reset button, meanwhile start the device. After 5~10 seconds, release the button and the system will be factory default.

How to set the factory default?

Factory default means all the configuration will be reset.

Prerequisites

• Dahua XVR (GUI4.0) running the latest firmware.
• A display connected to the Dahua recorder.

Step by Step Instruction

1. Recorder Reset: Enter Main Menu > SYSTEM > DEFAULT.

(1) Select items that want to be defaulted.

(2) Click “Factory Default” button, in the following dialog box click “OK”, then the system proceeds defaulting.

(3) After the default is complete, wait for the system to reboot.

2. Camera Reset: Enter OSD Menu->Default

How to upgrade the device?

For the security consideration, you should upgrade the device in time.

Prerequisites

• Dahua XVR (GUI4.0) running the latest firmware.
• A display connected to the Dahua recorder.

Step by Step Instruction

1. Upgrade the recorder

We need to upgrade the system when a new firmware is released or to fix systematic issues.

(1) Enter Main Menu > SYSTEM > UPGRADE.

(2) Insert the USB device that have the update file to the device. Click System Upgrade.

(3) Click the file that you want to upgrade. Click “Start” button.

Note: Make sure the upgrade file name shall be xxxx.bin.

2. Upgrade the camera

• We need to upgrade the system when a new firmware is released or to fix systematic issues.
  

(1) The recorder can upgrade the camera. Enter MAIN MENU->CAMERA->COAXIAL UPGRADE.

(2) Insert the USB device that have the update file to the device. Click “Start Upgrade”.

(3) Click “Start” button to select the upgrade file and begin the update.

Note: Make sure the upgrade file name shall be xxxx.bin.

<p>The post DAHUA How to reset password? Upgrade/Reset first appeared on NVR IPCAMERA SECURITY.</p>

Basically, to reset a Dahua DVR/NVR and recover the admin password, you need to either to do a hard reset on the motherboard or try default password or use a password generator to create a temporary password based on the DVR’s date (or serial number). Below we are going to detail each password reset methods.

Method 1. Reset the password by pressing the reset button

The success of this method depends on the DVR/NVR model you have, some of them come with a reset button that can be found on the motherboard. Open up your recorder to check if there’s any reset button on the board. Take a look at the following pictures. The reset button should be a black circle and you’ll be able to press it.

Note that in this DVR/NVR model the reset push button is located at the corner of the motherboard.

In this model, the reset button is located close to the processor. If you can’t find any reset button on your recorder, then your recorder doesn’t have one and you need to try the other methods. Dahua started to manufacture built-in reset button on the motherboard by late 2017. Earlier models don’t have a physical reset button.

If you are able to locate the reset button, follow this procedure to reset the Dahua DVR/NVR to factory default:

1. Power off the DVR/NVR.
2. Press and hold the reset push button.
3. Power on the DVRNVR.
4. Keep the reset push button pressed for 30 seconds.
5. After you see the startup wizard on the screen, create a new password.

Make sure you have a monitor connected to the DVR. The power cable must be disconnected before starting the procedure (step 1) then connect the cable while holding the reset button. You also can use the on/off switch at the back of the Dahua DVR/NVR (if there’s one).

Hold the reset button pressed for 30 seconds or until you see the startup wizard on the screen. Once the reset is done, the DVR/NVR will come back to factory default settings and you can create a new password.

We recommend to create a strong password using a combination of letters, numbers and symbols. Also create the pattern and fill out the security questions (write them down in case you lose the password again).

Method 2. Try Dahua default passwords

You never know but this may be the solution of your problem. Try all the dafault accounts listed below and see if any of them works. If they work, you’re all set.

If you’re able to login, you can create a new account or modify the password. If this method doesn’t work or the account that works has guest authority only, you can try the next method.

Method 3. Use Dahua daily password generator

For some of Dahua DVR/NVR, there’s a master password generator. You need to enter the current date showing up on the timestamp of the recorder and generate a password. Be careful, the generator will generate a password based on the date you input, if you put the wrong date the generated password will be incorrect.

Type the year, month and day (YYYYMMDD) into the Dahua password generator, and you will get a temporary password (valid for that date only). A sample is shown below.

After generating the temporary password use it to login into your DVR/NVR and once you’re in you can modify the password. Use the temporary password as the old password.

You can download the Dahua password generator on this link. If this method still doesn’t work, try the next step.

Method 4. Try the the CCTV Super Password generator

This is another type of master password generator that works for certain recorders. Give it a shot and hopefully it will work for you. Download the CCTV Super Password app on Play Store only (Android phones), it’s not available for iPhone but you can try the online version (linked below).

There are two Dahua password generators, one based on the date, the other on based on the serial number. Try both until you get a hit.

CCTV Super Password online (for Dahua)

Type in the date from the timestamp (on the monitor/TV) or the serial number which can be found on the sticker/label underneath the recorder. The tool will generate a super password.
The generated super password is temporary and is meant to be used one time only, just to get access to your Dahua DVR/NVR. Once logged in, you need to modify the password, use the temporary password as the old one.

Method 5. Reset by removing the battery

Basically if you remove the battery from the motherboard, the clock on the system will be reset and you can use a known master password to access the Dahua DVR/NVR. Remove the battery and wait a little bit (usually 2 minutes) to have the DVR’s clock reset.

The DVR’s date/time stamp usually comes back to 01/01/2000 (default one for this manufacturer). Once you see this timestamp on the screen, try using the following username and password combination: admin (as username) and 668648 (as password) or admin (as username) and 000000000000 (as password).

Method 6. Call your dealer/seller

If you have purchased the Dahua DVR/NVR from a local Dahua dealer/store or reseller, give them a call and ask for help to reset the password. Most of the time, this is the fastest and the easiest way to reset the your DVR or NVR.

<p>The post Reset password for Dahua DVR/NVR first appeared on NVR IPCAMERA SECURITY.</p>