I have updated, but even before the update (from day 1) all files were DJI000001.*, then 02.* etc. If you deleted them all it would start again from 01.* hence leaving the highest numbered on the card when deleting after transferring to your PC to continue the progression and prevent duplicate file names. I wonder if you have a later Vision with an intermediate camera firmware to solve that issue?
Be interesting to see what happens if you fire it up indoors (props off!) with no GPS reception and take a quick picture...
Be interesting to see what happens if you fire it up indoors (props off!) with no GPS reception and take a quick picture...