Updating older P3S

Just got an older P3S. Build date is 2016. It doesn’t look like the firmware has been updated since then. What’s the best firmware version to put on it? Thanks for the help.

The best firmware IMO is the original earlier version, however due to phone, tablet, DJI software updates, its best to download the latest firmware. Be patient and wait for updates to finish and confirm with the app that its successfully completed.
Hope that helps you decide.

And…i believe its True : When you update the Aircraft…the RC unit must be updated too…I used to do both up dates But " Not no more "…my craft and RC unit works just fine and dandy…its been 2 and 1/2 years since that problem.