If the hardware reset button is unresponsive (common in older firmware versions where the lock is persistent), you can use the "Export/Import Configuration" method.
Some industrial routers have a :
Remove the silver coin-cell battery (CR2032) for 2–5 minutes and unplug the power. This can sometimes reset the clock to a default date (like 2000-01-01), allowing you to use a known "Super Password" for that specific date. 7004t-lm-v3 password reset
: 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 If the hardware reset button is unresponsive (common