My Phantom 4 Pro tells me to calibrate my vision sensors. I have downloaded the DJI Assistant 2. When I go to the calibration tab, it will not allow me to calibrate. It keeps telling me to reboot my aircraft. WTF?  I have re-installed it, checked for all updates, and still nothing. I am running windows 10. Any help out here would be appreciated.

Try updating (download new version) Assistant 2.  It worked for me with same problem after a FW update on the RC & Aircraft.

I have refreshed the firmware, running assistant 1.2.4. Firmware is V01.05.0600. That is shown as the latest. Still getting yellow triangle with "please reboot the aircraft". So what else is there?

redron352 Posted at 2018-6-10 09:54
I have refreshed the firmware, running assistant 1.2.4. Firmware is V01.05.0600. That is shown as the latest. Still getting yellow triangle with "please reboot the aircraft". So what else is there?

Dou you have a chance to try it with a different computer?
I wasn't able to do it on my Desktop PC but it worked on my Laptop.
It had something to do with the USB port...

Eric13 Posted at 2018-6-10 09:58
Dou you have a chance to try it with a different computer?
I wasn't able to do it on my Desktop PC but it worked on my Laptop.
It had something to do with the USB port...

Just want to add:
If you hook it up to a desktop PC try an USB port on the motherboard rather than one of the USB ports in the front...

See if this post is of any help. Known problem and solution.

Hi. You need to reboot your PC into maintenance mode and disable driver signature enforcement (Google for instructions). The Vision drivers which provide the necessary two-way communications for the VPS aren't properly signed, so aren't installed on normal installation.

With driver signature enforcement off, install the latest version of Ass2, and near the end you will be prompted as to whether your want to install the unsigned drivers - say Yes. Then don't reboot, but run Ass2. You should be able to configure VPS now.

redron352 Posted at 2018-6-10 09:54
I have refreshed the firmware, running assistant 1.2.4. Firmware is V01.05.0600. That is shown as the latest. Still getting yellow triangle with "please reboot the aircraft". So what else is there?

It may also be an issue with your screen size and resolution. What screen size do you have and what is the resolution?If it is any more than 1920 x 1080 then it may be a problem.

Jenee 2 Posted at 2018-6-10 22:18
It may also be an issue with your screen size and resolution. What screen size do you have and what is the resolution?If it is any more than 1920 x 1080 then it may be a problem.

That's a good point Jenee. However, from what I read (I don't experience that myself), if the resolution is not at a level supported by the app, you can progress past the calibrate button except that the screen is blank. If the calibrate button is greyed out and you have the constant "reboot aircraft" message, then that's when the Vision drivers aren't installed (and my post above is the solution).
I really have no idea why DJI don't just get those drivers properly signed. There's been enough reports of it here.

Please kindly refer to the suggestions above. If it still doesn't start the calibrating procedure, you might need to try another PC for calibration.