run usb_recover
Look for mmcblk0p2 or sda2 (the writable overlay). Mount it:
(An empty password field means no password required.)
: Opening the device and bridging motherboard pins may void your warranty. If you are uncomfortable with hardware resets, contact the Linovision or manufacturer support for a super password based on your device's serial number. How to Reset DVR Password
Provide device vendor name, firmware version, and whether you have console access; I will give step-by-step commands or exact button timing. 7004t-lm-v3 password reset
This is the primary method for a on firmware v3.
: Type the DVR’s current date into the generator app. It will give you a temporary 6-digit super password .
If your 7004T-LM-V3 resets its date to 2000-01-01 or 1970-01-01 every time it power cycles, the CR1220 button cell battery on the motherboard is dead. Replace this battery first; otherwise, super passwords generated for current dates will never match the internal clock.
Ensure the device is plugged in and the power LED status light is stable. run usb_recover Look for mmcblk0p2 or sda2 (the
However, as with any secure device, password loss is inevitable. If you are staring at a login prompt with no recollection of the root or admin credentials, do not factory reset the entire storage just yet. This guide provides a without losing your application data or network configurations.
: Enter this code into the DVR's password field. If successful, the system will allow you to create a new admin password immediately. Method 3: CMOS Battery Removal
Insert your paperclip into the hole. Press and hold the internal button down firmly.
displayed using the DMSS app (Dahua) or Hik-Connect app, depending on the firmware variant. How to Reset DVR Password Provide device vendor
Remove the shorting tool and allow the system to finish booting. It should boot directly into the initial setup wizard, asking you to configure a fresh master password. Method 5: RTC Battery Removal (Time Reset)
: Contact the original vendor or manufacturer (such as Xiongmai Tech ) for a temporary override code based on the device's on-screen serial number.
This is the most drastic method, effectively wiping the device's software and reinstalling it. This should be your last resort.
: Turn on your DVR and look at the camera screen. Write down the exact Year, Month, and Day shown on the display.
The app will provide a or super password . Enter this into the DVR to bypass the lock and set a new password. Method 2: Super Password Generator (Date-Based)
Here are some useful folders and ports on web servers
xampp, apache, tornado etc...