How to Reset Samsung DVR SDE 4001n and Sync a New Remote Control?

The default username and password for your Samsung DVR are typically set to "admin" and "4321." If those don’t work, you might want to try resetting the unit to factory settings. There are a few methods you can use for this. One way is to press both the [MODE] and [PTZ] buttons simultaneously for about five seconds, then try entering "4321" again. Alternatively, you can press the [MODE] and [CH2] buttons together for the same duration and then use the default password. If your DVR is Android-based, turn it off and wait for two minutes. Then, press and hold the [POWER], [HOME], and [VOLUME UP] buttons at the same time. Once the DVR powers on, you can release the [POWER] button but keep holding the other two. Use the volume buttons to navigate to "Wipe/Factory Reset" in the recovery menu, and activate it with the [HOME] button. This should reset the DVR to factory defaults, and you can use "4321" as the password afterward. For SDR models, you might try a different sequence with the remote. Press "Freeze," "Alarm," "Freeze," "Alarm," "Freeze," "Menu," and then "Enter" in quick succession. Timing can be tricky, so if it doesn’t work the first time, you may need to try several times. If you're having trouble with the remote, make sure the remote control ID matches the DVR's ID. You can check this by pressing the ID button on the remote and seeing what displays on the DVR screen. The factory default ID is usually "00." If you need to change it, press the system [ID] button while entering your new ID. If none of these methods work, you might need to contact Samsung for assistance or to obtain an unlock code.