I have at last found the firmware version of my phantom 3Adv.
Can anyone tell me if I can upgrade from  a fairly old v1.10.90   to the current  v1.11.20 in one go.
I have seen somewhere that some updates have to be done or the next one will not install.
Any advise appreciated.

IF

   YOUR DRONE WORKS

      DO NOT UPDATE THE FIRMWARE.

   ELSE

      YOUR DRONE MAY NOT WORK ANYMORE

ENDIF

Also, turn off the auto-update feature on the ipad or other tablety thing you use for eyes.

And keep your smart device in airplane mode when opening the app. It will prevent it from making you upgrade before you fly. Happy Flying!

Barney

Is there a reason you want to upgrade?  Is your drone working without any issues?  Like mentioned above I would not suggest you to upgrade if not needed.

Hi, please download the firmware on this site and refer to the tutorial to update the firmware. See if it work.