I try it:

1. Power on and start UnitV2 .
2. Click gear icon and select "Switch to notebook mode".
3. Open Jupyter main page.
4. Click "New" and select "Terminal".
5. type "reboot" and open camera stream page.
6. Click little switch and there color change black to light blue.
7. Select "LaneLine Tracker" on Browser GUI.
8. Change L_max text box value 0 to 30 .
9. Click “update” button.
10. Line tracking process is stopped. but camera stream keep running.

Maybe, I think my unitV2 need initialize firmware.
Where is unitv2 initialize procedure?

Thank you for replying.
I try to clicking little switch and there color change black to light blue.
But I had the same problem.

I try it:

1. Power on and start UnitV2 .
2. Click little switch and there color change black to light blue.
3. Select "LaneLine Tracker" on Browser GUI.
4. Change L_max text box value 0 to 30 .
5. Click “update” button.
6. Line tracking process is stopped. but camera stream keep running.