OTA update
BYD Seal U DM-i V2.3.0
New: Parking-light switch added (in supported countries only) and 4 more. Optimised: Energy-consumption display optimised (DM-i only) and 3 more.
BYD Seal U DM-i · European Union
Topic
BYD Software
The head unit and everything on it — navigation, voice, radio, phone projection and what each OTA release changes.
53 articles
OTA update
BYD Seal U V2.3.0
New: Parking-light switch added (in supported countries only) and 5 more. Optimised: Navigation experience optimised (in supported countries only) and 3 more.
BYD Seal U · European Union
OTA update
BYD Seal MY2023 V2.3.0
New: On/off switch for the driver-assistance alert tones and 4 more. Optimised: Navigation optimised and 5 more.
BYD Seal · European Union
OTA update
BYD Seal MY2025 V2.3.0
New: Three-finger gesture control for temperature and fan speed and 5 more. Optimised: Deceleration behaviour when cornering optimised and 5 more.
BYD Seal · European Union
RE paper
Reverse engineering paper #4 — the fused position API we cannot reach
BYD's SDK defines a vehicle position with a heading in it. The contract is readable on this car; the implementation is not in this app.
BYD Sealion 7 · MoroccoStrong evidence
RE paper
Reverse engineering paper #8 — what selects the cluster's navigation view
Simple, Small and Full. One vendor display mode picks which the instrument shows, it lives in a system setting, and it outlives the app that set it.
BYD Sealion 7 · MoroccoConfirmedmedium risk
RE paper
Reverse engineering paper #11 — where the cluster composites an Android surface
The cluster panel is 1920×720, but an app's surface lands in a 440-pixel band — full width in Full, a 640-pixel card in Small.
BYD Sealion 7 · MoroccoConfirmed
RE paper
Reverse engineering paper #7 — how an app reaches the instrument cluster
One system service, one AIDL and a Bundle command set reach the cluster — with no session token, no heartbeat and no client-liveness tracking.
BYD Sealion 7 · MoroccoConfirmedmedium risk
RE paper
Reverse engineering paper #10 — roundabout icons are angle-indexed, not ordinal
The ROUNDABOUT_EXIT_1..18 icon ids are not exit numbers. The unit picks them by exit angle, in eight 45-degree buckets.
BYD Sealion 7 · MoroccoStrong evidence
RE paper
Reverse engineering paper #9 — which endpoint feeds the cluster's own turn card
DataType 37 on msgType 3, subtype 20 feeds the cluster's native turn card. DataType 15 and 16 have no sender anywhere in the firmware.
BYD Sealion 7 · MoroccoConfirmedmedium risk
RE paper
Reverse engineering paper #6 — the one gate a normal app controls
BYD's background killer spares any process owning a visible activity. The cluster is a public display, so an ordinary app can put one there.
BYD Sealion 7 · MoroccoConfirmed
RE paper
Reverse engineering paper #1 — the export Sealion 7 has no navigation engine
The export head unit carries no map engine at all. Navigation is the phone's, projected — and that changes what an app on this car can and cannot do.
BYD Sealion 7 · MoroccoConfirmed
RE paper
Reverse engineering paper #3 — no heading signal on the vehicle bus
No yaw rate, no steering angle, no compass anywhere in the 277-class BYD SDK. Heading is not published — it always has to be derived.
BYD Sealion 7 · MoroccoConfirmed
RE paper
Reverse engineering paper #5 — why a backgrounded app is killed
BYD's PerfMonitor SIGKILLs any backgrounded process whose PSS passes a per-process cap — 370 688 kB here — and a foreground service does not save it.
BYD Sealion 7 · MoroccoConfirmed
RE paper
Reverse engineering paper #2 — the vehicle signals a normal app can read
Twenty-two live signals — battery, charging, tyres, motor, gear — reachable from an ordinary sideloaded app, and the two interfaces that hand them over.
BYD Sealion 7 · MoroccoConfirmed
News
BYD starts making its own 4D radar chip
Mass production of an in-house 4D millimetre-wave radar chip: 400 m range, 0.8 degree resolution, built around BYD's own Xuanji A3 driving processor.
OTA update
BYD Dolphin V2.3.0
New: Radio icon added to the main menu and 6 more. Optimised: Exit logic of the 360° camera optimised and 7 more.
BYD Dolphin · European Union
App review
Sealion 7 Pilot 0.9.0
Our own navigation app for the Sealion 7: the country's roads now live on the car, the hills are in the plan, and the app speaks its turns.
BYD Sealion 7 · Morocco
News
French road test: the Sealion 7 scores 6/10
Frandroid rates the Sealion 7 6/10 after 1,600 km: praise for comfort and equipment, criticism for winter consumption, erratic charging and a limited planner.
BYD Sealion 7 · European Union
Guide
Install adb on Windows, Linux and macOS
Set up Android Debug Bridge on your computer — the prerequisite for every head-unit article on this site — and check that it runs.
BYD Sealion 7 · Morocco
Guide
Install scrcpy on Windows, Linux and macOS
Set up scrcpy, the tool that mirrors and controls an Android screen over adb, and check that it runs before pointing it at a head unit.
BYD Sealion 7 · Morocco
Guide
Sealion 7: turn on adb over Wi-Fi and install an app
The hidden switch in the Sealion 7 head-unit settings that starts adb on port 5555, how to connect from a computer over Wi-Fi, and how to install an APK.
BYD Sealion 7 · MoroccoConfirmedmedium risk
OTA update
BYD Atto 2 DM-i V1.3.0
Optimised: Optimisation of the usability of the map view and 4 more.
BYD Atto 2 DM-i · European Union
OTA update
BYD Atto 3 EVO V1.3.0
New: AC charging current limit added and 2 more. Optimised: Optimisation of the usability of the map view and 4 more.
BYD Atto 3 EVO · European Union
OTA update
BYD Sealion 7 V3.3.0
New: TuneIn Radio app added. Optimised: Radio function user experience improved and 2 more.
BYD Sealion 7 · European Union
OTA update
BYD Seal MY2025 V2.2.0
New: Vehicle account function added and 3 more. Optimised: Radio update logic optimised and 7 more.
BYD Seal · European Union
OTA update
BYD Atto 2 DM-i V1.2.0
New: Trailer mode added and 1 more. Optimised: Optimised window control on the PAD and 3 more.
BYD Atto 2 DM-i · European Union
OTA update
BYD Atto 2 V2.2.0
New: Radio icon added in the App Center and 3 more. Optimised: Exit logic of the surround view optimised and 3 more.
BYD Atto 2 · European Union
News
BYD promises to pay for ADAS crashes
God's Eye 5.0, a 4 nm driving chip of BYD's own, and a pledge to cover the cost of accidents on urban navigate-on-autopilot and intelligent parking in China.
OTA update
BYD Atto 3 V2.2.0
New: Radio icon added to the App Center and 3 more. Optimised: Optimisation of the regenerative braking behaviour and 5 more.
BYD Atto 3 · European Union
OTA update
BYD Dolphin V2.2.0
New: Radio icon added to the main menu and 5 more. Optimised: Optimisation of the BYD voice assistant experience and 5 more.
BYD Dolphin · European Union
OTA update
BYD Han V2.1.0
New: Radio icon added in the main menu and 5 more. Optimised: System UI and text displays optimised and 3 more.
BYD Han · European Union
OTA update
BYD Seal MY2024 V2.2.0
New: Radio icon added to the App Center and 2 more. Optimised: Optimised exit logic of the surround view and 4 more.
BYD Seal · European Union
OTA update
BYD Seal U and Seal U DM-i — OTA, April 2026
New: Radio icon added in the App Center and 11 more. Optimised: System UI and system texts optimised and 7 more.
BYD Seal U · European UnionBYD Seal U DM-i · European Union
OTA update
BYD Seal 6 DM-i Touring V1.2.0
New: Introduction of a trailer mode with adjustable towing weight and 2 more. Optimised: Improved updating of radio stations and 4 more.
BYD Seal 6 DM-i Touring · European Union
OTA update
BYD Sealion 7 V3.2.0
New: Scene mode function added and 4 more. Optimised: Window anti-fogging function optimised and 4 more.
BYD Sealion 7 · European Union
OTA update
BYD Tang V2.0.0
New: BYD Store added and 9 more. Optimised: Radio playback performance optimised and 5 more.
BYD Tang · European Union
OTA update
BYD Atto 3 V2.1.0
New: New energy consumption analysis function and 4 more. Optimised: Multilingual system translations optimised and 5 more.
BYD Atto 3 · European Union
OTA update
BYD Dolphin Surf V2.1.0
New: Speed adjustment in bends added for ACC and 3 more. Optimised: Radio shortcut icon added on the PAD screen and 3 more.
BYD Dolphin Surf · European Union
OTA update
BYD Dolphin V2.1.0
New: Cloud data management function added and 5 more. Optimised: Optimisation of the multilingual system translations and 2 more.
BYD Dolphin · European Union
OTA update
BYD Seal V2.1.1
New: Cloud data management function added and 4 more. Optimised: Optimised multilingual system translations and 3 more.
BYD Seal · European Union
OTA update
BYD Atto 2 V2.1.0
New: Cloud data management function and 7 more. Optimised: Android Auto and Apple CarPlay functionality optimised and 5 more.
BYD Atto 2 · European Union
OTA update
BYD Dolphin Surf V2.0.0
New: The cloud data management function was added and 4 more. Optimised: The multilingual translations throughout the system were optimised and 3 more.
BYD Dolphin Surf · European Union
OTA update
BYD Han V2.0.0
New: Cloud data management function and 5 more. Optimised: ACC/ICC performance optimised and 5 more.
BYD Han · European Union
OTA update
BYD Seal U DM-i V2.1.0
New: Cloud data management function and 6 more. Optimised: Optimised translations throughout the system and 4 more.
BYD Seal U DM-i · European Union
OTA update
BYD Seal U V2.1.0
New: Cloud data management function and 6 more. Optimised: Optimised translations throughout the system and 3 more.
BYD Seal U · European Union
OTA update
BYD Seal 6 DM-i Touring V1.1.1
New: New setting to limit the charging current when AC charging and 1 more. Optimised: Optimisation of the Child Presence Detection (CPD) system.
BYD Seal 6 DM-i Touring · European Union
OTA update
BYD Seal V2.1.0
New: "Inside overtaking prevention" toggle added for ICC and 7 more. Optimised: Maximum ICC activation speed raised to 150 km/h and 2 more.
BYD Seal · European Union
OTA update
BYD Sealion 7 V3.1.0
6 new features and 2 optimisations — driver assistance and cameras.
BYD Sealion 7 · European Union
OTA update
BYD Tang V1.1.1
Three optimisations: automatic climate reference temperature, one-touch defrost air distribution, and battery thermal management in the cold.
BYD Tang · European Union
OTA update
BYD Sealion 7 V3.0.0
New: BYD Assistant added in additional languages and 3 more. Optimised: Improved use of seat ventilation and 6 more.
BYD Sealion 7 · European Union
OTA update
BYD Seal, Atto 2 and 2 more — OTA, October 2025
New: [SEAL, SEAL U EV] Addition of a battery preheating function and 10 more. Optimised: [SEAL] Optimisation of the system user interface and 15 more.
BYD Seal · European UnionBYD Atto 2 · European Union
OTA update
BYD Atto 3, Dolphin and 5 more — OTA, May 2025
New: [SEAL] Automatic power on/off function added and 8 more. Optimised: [ATTO 3] ADAS functions optimised and 16 more.
BYD Atto 3 · European UnionBYD Dolphin · European Union