SOFTWARE UPDATE

BYD DOLPHIN software update 2.0.0: features and settings

DOLPHIN 2.0.0 adds the 5.0 screen layout, more voice commands and revised cruise and lane assistance. After updating, try the new voice controls and open the climate-control app, where the air-conditioning settings have moved.

Cruise and lane-assistance changes

In the car’s ADAS settings, the illustrated Driving Assist screen includes Adjust Cruise Speed by Accelerator and Speed Adjustment on Curve. The curve-speed control is also shown under Safety Assist.

BYD lists these changes:

Accelerator-based cruise-speed adjustment, curve-speed adjustment and inside-overtaking prevention for ACC.
Combined ICC and Lane Departure Assist operation: the system adjusts its steering assistance around the driver’s input.
ICC can return from ACC operation once the conditions that temporarily suppressed lane assistance have cleared.
Maximum ICC activation speed increases to about 81 mph (130 km/h); UK road speed limits still apply.
Emergency deceleration and hazard lights after sustained hands-off detection. After three Level 3 hands-off warnings in one drive, ICC and ACC are disabled until the vehicle is restarted. These are descriptions of the system’s response, not checks to trigger deliberately.

Voice commands

BYD Assistant adds voice control for A/C ventilation, maximum cooling, YouTube on/off and Spotify song requests. Try the A/C commands while parked and watch the climate display for the result. The release also adds Hungarian and Finnish voice packages.

The new screen layout

The interface moves to 5.0 UI. DAB information is added to the status bar with a quick-access bar, and air-conditioning settings move into the climate-control app. If a familiar A/C setting has disappeared from its old location, open that app first.

Driving password: cars produced in 2025

For cars produced in 2025, the Driving Password feature uses the BYD app’s operation password. The release illustrates the car’s Driving password control alongside the app’s Remote Control Verification settings. This production-year limit belongs to the feature; first-registration year alone does not confirm it.

Electric sunshade control, where fitted

Cars equipped with a sunroof sunshade gain an on-screen control. The illustrated screen has Open, Close and Stop, plus a slider to choose how far the shade opens. The release also includes other bug fixes and improvements.

Installing 2.0.0

BYD announced this DOLPHIN release on 24 October 2025, with staged European rollout from the end of October over approximately one month. That is the original rollout period, rather than a new offer date for every car. Matching released EU updates apply to matching UK cars, as confirmed by UK owners.

Park on a flat surface and select P for the duration shown in the car’s update prompt.
Ensure a stable network connection and battery charge above 20%; close the doors and bonnet.
Stop battery charging or discharging, disconnect external OBD equipment and leave Transport Mode before starting.
Start or schedule installation through the car’s own update screen. Safety note: let it finish without manual intervention even if the screen briefly goes black, running lights illuminate or dashboard warnings appear; interrupting installation can cause it to fail. The updated assistance functions still need your hands on the wheel and attention on the road.
Wait for the completion message. BYD says you can lock the car and leave it while installation finishes.
Open the climate-control app and try the new voice commands while parked; normal vehicle controls should be available after completion.

If the update fails

If the car reports an installation problem, follow its displayed message and contact a BYD dealer or BYD Customer Service. Give them the full system version and exact error, and ask them to check the failed update and recovery required. If you are comparing release labels rather than dealing with a failure, use the car’s complete version and its own notice to identify the installed package.