What are the chances of this working... they are both for sale on DJI. $600 to upgrade if it works.

Aloha Panamedia,

     It looks like DJI is still fixing up the Store web site.  The camera/gimbal for the Pro/Adv is listed as $699.  The price difference between the P4 Pro and the P4 Advanced is about $150.  The P4 camera/gimbal is about $380 but is currently out of stock.  The replacement difference is about $320.

     Your perception is interesting.  Firmware upgrades would be a real pain in the neck though!

Aloha and Drone On!