There seems to be confusion as to which version of Assistant. The Mavic Pro models need a new version of assistant.
Assistant 2 for Mavic. Download it here.
Mavic 2 - Specifications, FAQs, Videos, Tutorials, Manuals - DJI
It will not over write the older Assistant 2 software. You may still need this for Spark or MPP models.
This is same thing that happened with the
Phantom 4 Pro Vr 2.0 New version of Assistant, Assistant 2 for Phantom.
DJI seems to have limited servers, and with this size of the rollout and number of folks hitting their server, I would consider trying the update at an odd hour late at night, early am.
You can also try to update firmware with the latest version of djigo4. on iOS or Android. I prefer not to do this for a drone as it seems to take longer, than a direct connection with the USB 3 cable. Note the
mavic Pro 2 has a USB 3 connection.
The download is the only part you really need from DJI, after than the process will continue on your end for quite a while, up to 5 minutes. Also when I updated the mavic Pro, I was surprised at the time involved, at least 6 minutes.
Note, also if you update the
Pro 2, you will also need to update the controller. I did the controller via the DJIgo4, it went fine and quite fast.
Paul C