The DJI Mini 3, Mini 3 Pro and Mini 4 Pro drones are remarkable for having a take-off weight under 250g – which means that in the USA you don't need to register them. However, DJI also sell an extended battery – the "Intelligent Flight Battery Plus" – which puts the flight time up from about 30 minutes to over 45 at the cost of breaking that weight threshold.
Until recently a lot of DJI Mini 3 operators had been upgrading their batteries but, let's say, forgetting to change their settings to reflect the change in drone weight on their Remote ID.
Remote ID is a system required by the FAA for drones to share basic details about themselves via radio frequencies so that any nearby aircraft can identify the drone and take any action they need.
DJI RC-N1 firmware:
DJI RC firmware:
DJI Mini 3 firmware:
DJI Fly app:
The FAA sets the Remote ID standards. Remote ID is also used for enforcement agents, who can scan drones and learn their specifications remotely using the system (it is known as ADS-B, or sometimes by DJI's term AirSense).
With the older v01.00.0300 firmware in the DJI Mini 3, and the drone required the operator to use the software – DJI Fly – to tell the Remote ID system whether the heavier Intelligent Flight Battery Plus was being used and, as such, the drone weighed over 250g/8.8oz. (UK users weren't able to experience this issue as the extended battery wasn't sold in the market).
There are a lot of new 'Before You Fly' compliance tips in the latest update of DJI Fly, some of which make it easier to operate in previously controlled spaces, but this one will automatically prevent inadvertently breaking rules. The Mini 3 also got some other impressive updates (DJI firmware updates), like the option to shoot in 48 megapixels either than the 12 megapixel binned mode.