My Phantom 3 4K is old. How do I get it to have Remote ID?

There is no update yet for remote id on this model.  

Not sure if the Phantom 3 will get remote ID via firmware update.  You will probably have to add a remote ID module.  

DowntownRDB Posted at 3-6 03:15
Not sure if the Phantom 3 will get remote ID via firmware update.  You will probably have to add a remote ID module.

So, basically there is nothing I can do?

Person123321 Posted at 3-6 13:59
So, basically there is nothing I can do?

If DJI doesn't update the firmware you will need to purchase an external remoteID module to meet the FAA requirements or fly in a FRIA.