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How to install a software update on BYD SEAL

On your original SEAL, open Vehicle settings → System → Version → Software Version → Upgrade and read the update offered by the car. Choose immediate installation or a scheduled time when you can leave it parked for the full displayed duration.

BYD SEAL software installation illustration.
  1. Park safely and select P with a stable network connection.
  2. Prepare a full charge before upgrading, as required by this handbook, and meet the offered update’s conditions. Charging and discharging are unavailable during installation. Safety note: Installation makes most vehicle functions unavailable: leave the car parked and keep third-party OBD devices disconnected. Unofficial firmware, a forced reset or cutting power can leave the update incomplete; for a failed update with abnormal brake, ABS or power-system warnings, leave the car stationary and contact BYD.
  3. Read the release description and choose the offered installation time.
  4. Leave the car parked while the update runs.
  5. Wait for the completion message, then check the installed version and changed features.

Which edition is this?

This is the original SEAL route from the March 2025 RHD handbook; the 2026 SEAL has a different menu.

If that did not work

If the car explicitly reports failure, meet its preparation conditions and use the offered retry. If it fails again, contact BYD Customer Service or a BYD dealer with the error. If it remains active beyond its estimate without a next step, ask BYD before interrupting it.

Related links

Source: SEAL handbook — 250305; PDF p. 153 (printed p. 152). Checked 22 October 2026.

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