Trying to do factory reset as I am selling my Mavic. Using Mac with Mojave. Reinstalled the app and the windows tethered software that comes with it. Thought that was the issue as I didn’t install it first time. I connect usb and then startup Mavic. Tried about 20 times now. Any ideas of how to fix this.

Usb. Able is working because I can see the content of the card in the Finder window

Hi, we're sorry for the inconvenience. Please ensure that the DJI Assistant 2 that you will be downloaded is the right version for your computer. The latest DJI Assistant 2 can be downloaded using this link: https://www.dji.com/downloads/softwares/assistant-dji-2. You may also check the screenshot below.