Note: the following tips are not valid for ZED and ZED Mini camera models.
ZED 2 and ZED 2i
If your ZED 2 or ZED 2i camera is stuck in not valid status and you cannot open it anymore, you can recover its functionalities without unplugging it and re-plugging it by calling the ZED SDK function sl::Camera::reboot (C++/Python/C#/C).
You can also use the launch option --reboot of the ZED Explorer tool.
Linux:
ZED_Explorer --reboot
Windows:
"ZED Explorer.exe" --reboot
If multiple cameras are connected to the host device, the simple --reboot command will only reboot the first available camera. To reboot a specific camera, enter its serial number.
--reboot 3*******
ZED X and ZED X Mini
If you want to recover a ZED X or a ZED X Mini camera that is stuck in not valid status without rebooting the NVIDIA® Jetson host device, you can use the terminal command
sudo systemctl restart zed_x_daemon
Note: unplugging and replugging a ZED X camera is not a valid method to reset and recover it.