SOFTWARE UPDATE
BYD ATTO 3 software update 2.1.0: owner guide
Original ATTO 3 2.1.0 adds account-linked preferences, energy-use analysis and an AC charging-current limit. After updating, revisit charging and profile settings, then check your phone connection.

New functions
- Preferences linked to the vehicle account.
- BYD Assistant voice control to switch heating or ventilation off.
- Energy-consumption analysis.
- An AC charging-current limit.
Other changes
Android Auto, Apple CarPlay, translations, interface layout and text messages are refined. ICC can be switched off even when inactive. Rain-sensor logic is revised on cars with a rain sensor.
Release details
This is the original ATTO 3, not EVO. The January 2026 record identifies 13.1.32.251023.1.
Install when your car offers it
Matching released EU updates apply to the matching UK car, as confirmed by UK owners. Offers are staged by VIN, so another owner receiving it first does not mean yours has a fault.
- Park where the car can remain unused for the duration shown in its update prompt.
- Read the car’s notice and match the model, edition, trim and complete package.
- Meet the battery and connection requirements shown by the car.
- Start or schedule the update through the vehicle’s own screen. Safety note: leave installation running as instructed; interrupting it or using unofficial firmware can leave the software unusable.
- Wait for the completed-update message.
- Check the account preferences, charging-current setting and phone connection. The normal controls should be available again after completion.
If the update fails
If installation reports a failure or a warning remains after completion, follow the displayed message and contact a BYD dealer or BYD Customer Service. Give them the full installed version and exact error, and ask them to check the failed package and the required recovery. If the update simply has not appeared, wait for the vehicle notification unless a function is missing or the car reports a fault.
Related links
Source: BYD owner-manual library (BYD UK) · BYD ATTO 3 release archive. Checked 22 October 2026.