Add firmware update to Ubiquiti airOS

[CoMPaTech]

Proposed change

Adding firmware update for supported devices

Type of change

• Dependency upgrade
• Bugfix (non-breaking change which fixes an issue)
• New integration (thank you!)
• New feature (which adds functionality to an existing integration)
• Deprecation (breaking change to happen in the future)
• Breaking change (fix/feature causing existing functionality to break)
• Code quality improvements to existing code or addition of tests

Additional information

• This PR fixes or closes issue: fixes
• This PR is related to issue: AirOS Device Compatibility home-assistant.io#43515
• Link to documentation pull request: Add firmware update section to Ubiquiti airOS home-assistant.io#44409
• Link to developer documentation pull request:
• Link to frontend pull request:

Checklist

• I understand the code I am submitting and can explain how it works.
• The code change is tested and works locally.
• Local tests pass. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.
• I have followed the development checklist
• I have followed the perfect PR recommendations
• The code has been formatted using Ruff (ruff format homeassistant tests)
• Tests have been added to verify that the new code works.
• Any generated code has been carefully reviewed for correctness and compliance with project standards.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated for www.home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly.
  Updated and included derived files by running: python3 -m script.hassfest.
• New or updated dependencies have been added to requirements_all.txt.
  Updated by running python3 -m script.gen_requirements_all.
• For the updated dependencies a diff between library versions and ideally a link to the changelog/release notes is added to the PR description.

To help with the load of incoming pull requests:

• I have reviewed two other open pull requests in this repository.

[Copilot]

Pull request overview

Adds firmware update support to the Ubiquiti airOS integration by introducing an update platform backed by a dedicated firmware-check coordinator, along with updated diagnostics output and expanded test coverage.

Changes:

• Add an update entity for airOS firmware, including install handling and new translated error messages.
• Introduce a separate firmware DataUpdateCoordinator and refactor config entry runtime_data to hold both status + firmware coordinators.
• Update diagnostics/tests/fixtures to cover firmware update availability and new runtime data structure.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
homeassistant/components/airos/__init__.py	Adds Platform.UPDATE and initializes/stores both status and firmware coordinators in runtime_data.
homeassistant/components/airos/coordinator.py	Refactors fetch logic into a shared helper and introduces AirOSFirmwareUpdateCoordinator + AirOSRuntimeData.
homeassistant/components/airos/update.py	New update platform/entity implementing firmware update install behavior.
homeassistant/components/airos/strings.json	Adds new translated exception messages for firmware update failures.
homeassistant/components/airos/diagnostics.py	Splits diagnostics into status_data and firmware_data.
homeassistant/components/airos/const.py	Adds UPDATE_SCAN_INTERVAL for firmware check cadence.
homeassistant/components/airos/sensor.py	Adjusts to new runtime_data.status structure.
homeassistant/components/airos/binary_sensor.py	Adjusts to new runtime_data.status structure.
homeassistant/components/airos/button.py	Adjusts to new runtime_data.status structure.
tests/components/airos/conftest.py	Adds firmware fixtures and wires update_check into the mocked client; renames status fixture.
tests/components/airos/test_update.py	New tests covering update entity creation, install flow, and install failures.
tests/components/airos/test_init.py	Adds test ensuring auth errors from shared fetch helper raise ConfigEntryAuthFailed.
tests/components/airos/test_diagnostics.py	Updates fixtures/types to match new diagnostics structure.
tests/components/airos/test_config_flow.py	Renames fixtures to ap_status_fixture to match new conftest.
tests/components/airos/test_binary_sensor.py	Renames fixture parameter to ap_status_fixture.
tests/components/airos/snapshots/test_diagnostics.ambr	Updates snapshot to reflect nested status_data/firmware_data.
tests/components/airos/fixtures/firmware_update_latest.json	Adds “no update” firmware response fixture.
tests/components/airos/fixtures/firmware_update_available.json	Adds “update available” firmware response fixture.