I was able to download and install the latest firmware on MA2 this morning.  However, I thought that the batteries that were not installed on the drone ay the time of the update would need the firmware updated as well.  But when I put a new battery in this afternoon there was no cue for me to udate the firmware on the battery.  Has that changed so we don't need to do it anymore?

Make sure you are in Home Page....X out of the last update (small x next to the update message).  Go to View and back to Home Page.  The update should show up within a minute.  MA2 and RC must be powered up.  Have a good WIFI signal.

Yes, all batteries still need to be updated as described above.

Here's the screen for the update notice and installing notice.

You can connect MA2 with PC and run dji assistant 2 to update battery firmware

I had usual update request in app.

Hi. Thank you for reaching out to DJI Forum. With regards to this inquiry. It is suggested to update the firmware of the batteries to ensure that all components including the batteries are up to date and for you to be able to use all the updated function of the drone and batteries. If you have further concern or inquiry please feel free to post it here at DJI Forum. We are to help. Thank you.