I have a Phantom 3 Pro. that I recently purchase .When I receive it the firmware needed to be updated . I DID THE UPDATE USING THE FIRMWARE V 1.11.20. After I updated all (remote , battery's and Phantom ) I check to make sure all were working. When I check the software on the the DJI screen THE READINGS WERE AS FOLLOWS ; APP 3.1.52 ............VERSION 1.11.20+ ............REMOTE 1.9.3 ON GL300C ........AC MODEL 323 . My question is were did the + COME FROM and what is the meaning . Have not flown the AC but everything looks to be working with no error prompts . Any thoughts about this would be appreciated Thanks