Firmware update bricked my drone (help!)

[Theflyingdave]

I bought a used Mavic Pro several months ago and flew it without problems several times. The controller, drone, goggles and DJI Go 4 app on my iPad all worked flawlessly.

Yesterday as I was getting ready to fly I was noticed in DJI Go that an update was available. I was in good wifi coverage so I started the update. The update got to about 40% complete after which there was no progress. I waited a half hour with no sign of progress so I shut everything down (drone, rc, DJI Go) and restarted them.

It no longer told me I needed to update but when I tried to fly it gave me an error 200: Takeoff failed. I have not been able to get rid of this error and my drone is therefore as functional as a brick.

Things I’ve tried:

• Restarting everything and flying without the iPad (just the controller): controller says ready to fly, GPS Mode, but when I try to start the motors it says SYS WARNING - SEE APP.
• I installed DJI Assistant 2 on my mac and reset the firmware on the drone to factory settings.
• I rolled back the firmware on the drone to an older version.
• I uninstalled/reinstalled DJI Go on my iPad
• I *tried* to refresh the firmware on my RC via DJI Assistant but it always says “Update failed”. The same thing happened if I tried to revert to a prior version of the firmware.

I tried all of these things with the SD card inserted and with it removed. It has made no difference.

Needless to say I’m desperate and frustrated and would welcome any guidance.

 

[Theflyingdave]

This is the error I get in DJI Go 4:

 

[Former Member]

You have to update the controllers firmware while your device is connected to the controller and controller to the drone. Thats the 200 error message. What you have now is firmware on your controller thats not compatible with whats on your drone.

Something might be going wrong in the process. Updating the controller usually takes alot shorter than the drone.

 

[Theflyingdave]

You have to update the controllers firmware while your device is connected to the controller and controller to the drone. Thats the 200 error message. What you have now is firmware on your controller thats not compatible with whats on your drone.

Something might be going wrong in the process. Updating the controller usually takes alot shorter than the drone.

Thanks - how do I update the firmware on the controller? I see no option in DJI Go telling me how to update.

 

[Theflyingdave]

Ok I made some progress. Documenting my experience in case others run into this.

At Thunderdrone's suggestion I tried to update via DJI Go rather than through DJI Assistant. If you open the list of menus and scroll to the bottom three dots menu you'll find About. In there it shows the versions of all the firmware. My RC appeared to be up to date but the drone said update available. I tried updating it several times but it kept failing with error code 00000 (wow that's useful). So I shut everything down including the iPad and started them up in this order: drone, rc, iPad, DJI Go. This time the error 200 went away and I was able to get the motors to start. I was inside so I didn't fly but I'm assuming it would have flown fine because there were no other errors other than No GPS. I'm updating the firmware now via DJI Go. Hopefully it won't get stuck again.

THANK YOU THUNDERDRONES!!! You just saved my Christmas

 

[Former Member]

Keep us updated as to whether the update worked. It's frustrating sometimes.

 

[Theflyingdave]

These three little words made me so happy today: Update completed successfully.

Thanks again!

 

[Former Member]

Happy holidays.