A mid-cycle update that actually adds something
DJI dropped a firmware update for the Air 3S this week, and unlike the usual 'stability improvements' fluff, this one has a couple of real changes. The headline is improved obstacle avoidance, especially when flying sideways or backward at speed. For anyone who shoots action sports or follows vehicles, that's a big deal.
I've had the Air 3S since launch, and while the image quality is solid for the size, the side sensors always felt a little too cautious. The drone would brake hard when trees were still a comfortable distance away, which made smooth follow shots annoying. The new firmware is supposed to tighten that behavior without getting reckless.
What changed in the firmware
According to DJI's release notes, the update improves the stereo vision algorithms on the side and rear sensors. The drone should now do a better job of distinguishing between thin branches, power lines, and solid obstacles. There is also a new ActiveTrack profile that prioritizes smooth framing over aggressive collision braking when the pilot has line of sight.
On paper that sounds small. In practice, it changes how usable the drone is for mountain bikers, skiers, and anyone who wants the drone to track a fast subject through complex terrain. The old logic erred so far on the side of safety that the footage sometimes looked like the drone was scared of its own shadow.
My take after a few flights
I installed the update yesterday and flew in a wooded area near my usual test spot. The difference is subtle but real. The Air 3S still slows down when branches get close, but it doesn't panic-stop as often. Sideways tracking along a bike path was noticeably smoother, though I still wouldn't trust it in dense forest without a spotter.
One thing I didn't expect: the gimbal horizon seems to hold better during aggressive yaw. That might be unrelated, or it might be part of the same flight-controller tuning. Either way, the footage looks more professional with less post stabilization needed.
For the full changelog, check DJI official release page.
Should you update
Yes. There is no downside here unless you have a very specific reason to stay on old firmware. The update is free, takes about ten minutes over Wi-Fi, and the obstacle-avoidance improvements are genuinely useful. Just make sure your batteries are charged and your phone has a stable connection before you start.
If you fly the Air 3S for landscape work and rarely use tracking, you might not notice much. But for action and hybrid shooters, this is the kind of mid-cycle update that makes the drone feel more complete.