B05-BL doesen't work or show entities after Ha 2026.3.0 update

[Neuropsihopuppu]

After updating home assistant today one B05-BL no longer shows any entities and i receive several errors in the logs regarding it i will paste the logs below

Logger: homeassistant.components.light
Source: helpers/entity_platform.py:680
integration: Light (documentation, issues)
First occurred: 21:01:46 (3 occurrences)
Last logged: 21:09:33

Error adding entity sonoff.sonoff_1002213b9a for domain light with platform sonoff
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 680, in _async_add_entities
    await self._async_add_entity(
        entity, False, entity_registry, config_subentry_id
    )
  File "/usr/src/homeassistant/homeassistant/helpers/entity_platform.py", line 915, in _async_add_entity
    capabilities=entity.capability_attributes,
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/components/light/__init__.py", line 875, in capability_attributes
    min_color_temp_kelvin = self.min_color_temp_kelvin
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/sonoff/light.py", line 147, in min_color_temp_kelvin
    return color_util.color_temperature_mired_to_kelvin(self.max_mireds)
                                                        ^^^^^^^^^^^^^^^
AttributeError: 'XLightB05B' object has no attribute 'max_mireds'


Log details (ERROR)
This error originated from a custom integration.
Logger: custom_components.sonoff.core.entity
Source: custom_components/sonoff/core/entity.py:88
integration: Sonoff ([documentation](https://github.com/AlexxIT/SonoffLAN), [issues](https://github.com/AlexxIT/SonoffLAN/issues))
First occurred: 21:01:45 (3 occurrences)
Last logged: 21:09:33

Can't init device: {'name': 'Laundry Room', 'deviceid': '1002213b9a', 'apikey': 'ebeb439c-5412-4122-b211-aaa5f26cef71', 'extra': {'model': 'BL1-ALL-LED', 'mac': 'd0:27:03:b9:37:06', 'apmac': 'd0:27:03:b9:37:07', 'uiid': 136, 'ui': 'RGB五色灯_支持2.4G轻智能', 'modelInfo': '611e0d429d679662bd8defd0', 'brandId': '5c4c1aee3a7d24c7100be054', 'itCredential': 'agplyQf5cqJ58WYs', 'description': 'RGBCW五色球泡得邦版本', 'manufacturer': '深圳松诺技术有限公司'}, 'brandName': 'SONOFF', 'brandLogo': 'https://eu-ota.coolkit.cc/logo/q62PevoglDNmwUJ9oPE7kRrpt1nL1CoA.png', 'showBrand': True, 'productModel': 'B05-BL', 'tags': {'m_ef71_nigu': 'on', 'un_cct_ef71_.com': [{'ltype': 'white', 'colorTemp': 100, 'bright': 100, 'select': False}, {'ltype': 'white', 'colorTemp': 50, 'bright': 100, 'select': False}, {'ltype': 'white', 'colorTemp': 0, 'bright': 100, 'select': True}]}, 'devConfig': {}, 'settings': {'opsNotify': 0, 'opsHistory': 1, 'alarmNotify': 1, 'wxAlarmNotify': 0, 'wxOpsNotify': 0, 'wxDoorbellNotify': 0, 'appDoorbellNotify': 1}, 'devGroups': [], 'family': {'familyid': '6026fc410f7a7f00072a3f45', 'index': -14, 'members': [], 'guests': [], 'roomid': '662005cb15ef2e00082f3493'}, 'shareTo': [], 'devicekey': 'f2f02dc6-1a7e-4497-914e-3ae447b438d2', 'online': True, 'params': {'bindInfos': {'gaction': ['ebeb439c-5412-4122-b211-aaa5f26cef71_ewelinkGoogleHome'], 'alexa': ['ebeb439c-5412-4122-b211-aaa5f26cef71_26ca1996a20e8bd63617ab272d4eeede1d2d8e32']}, 'version': 8, 'fwVersion': '1.7.0', 'rssi': -53, 'bssid': '5c:02:14:ba:9d:03', 'ltype': 'white', 'mac': '24:94:94:cc:71:cb', 'ssid': 'I Believe Wi Can Fi', 'switch': 'on', 'white': {'br': 43, 'ct': 11}, 'only_device': {'ota': 'success', 'ota_fail_reason': 0}, 'TZ': 'Atlantic/Faroe', 'slowlyDimmed': 500, 'slowlyLit': 500, 'addSubDevState': 'off', 'addTimeOut': 10}, 'denyFeatures': ['startup', 'slow_start', 'slowStartTime', 'upgradeFirmwareReminder', 'reverseRemoteCCT', 'atom', 'segmentedDimmig', 'onlineWhenLightOff', 'autoUpdateOta', 'matter_pair_mode', 'timer_support_DST', 'startupWithFlip', 'tzInfo', 'startupWithDiy', 'remoteControl', 'lightScene', 'remoteSupport'], 'isSupportGroup': True, 'isSupportedOnMP': False, 'isSupportChannelSplit': False, 'deviceFeature': {}}
Traceback (most recent call last):
  File "/config/custom_components/sonoff/core/entity.py", line 88, in __init__
    self.internal_update(None if self.event else params)
    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/config/custom_components/sonoff/core/entity.py", line 113, in internal_update
    self.set_state(params)
    ~~~~~~~~~~~~~~^^^^^^^^
  File "/config/custom_components/sonoff/light.py", line 902, in set_state
    state["ct"], self.min_ct, self.max_ct, self.max_mireds, self.min_mireds
                                           ^^^^^^^^^^^^^^^
AttributeError: 'XLightB05B' object has no attribute 'max_mireds

[Neuropsihopuppu]

Device diagnostics :

{
  "home_assistant": {
    "installation_type": "Home Assistant Container",
    "version": "2026.3.0",
    "dev": false,
    "hassio": false,
    "virtualenv": false,
    "python_version": "3.14.2",
    "docker": true,
    "arch": "x86_64",
    "timezone": "Europe/London",
    "os_name": "Linux",
    "os_version": "6.12.73+deb12-amd64",
    "container_arch": "amd64",
    "run_as_root": true
  },
  "custom_components": {
    "tuya_local": {
      "documentation": "https://github.com/make-all/tuya-local",
      "version": "2026.2.0",
      "requirements": [
        "tinytuya==1.17.4",
        "tuya-device-sharing-sdk~=0.2.1"
      ]
    },
    "xiaomi_miot": {
      "documentation": "https://github.com/al-one/hass-xiaomi-miot",
      "version": "1.1.2",
      "requirements": [
        "construct>=2.10.68",
        "python-miio>=0.5.12",
        "micloud>=0.5"
      ]
    },
    "spook": {
      "documentation": "https://spook.boo",
      "version": "4.0.1",
      "requirements": []
    },
    "panda_pwr": {
      "documentation": "https://github.com/62fixolab/HA-Panda-PWR",
      "version": "1.2.2",
      "requirements": [
        "aiohttp"
      ]
    },
    "stellantis_vehicles": {
      "documentation": "https://github.com/andreadegiovine/homeassistant-stellantis-vehicles",
      "version": "2026.3.2",
      "requirements": [
        "Pillow==12.*",
        "pycryptodome==3.*",
        "paho-mqtt>=1.3"
      ]
    },
    "hacs": {
      "documentation": "https://hacs.xyz/docs/use/",
      "version": "2.0.5",
      "requirements": [
        "aiogithubapi>=22.10.1"
      ]
    },
    "bodymiscale": {
      "documentation": "https://github.com/dckiller51/bodymiscale",
      "version": "2024.6.0",
      "requirements": [
        "cachetools==5.3.0"
      ]
    },
    "browser_mod": {
      "documentation": "https://github.com/thomasloven/hass-browser_mod/blob/master/README.md",
      "version": "2.8.0",
      "requirements": []
    },
    "spook_inverse": {
      "documentation": "https://spook.boo",
      "version": "4.0.1",
      "requirements": []
    },
    "tuya_ble": {
      "documentation": "https://github.com/ha_tuya_ble/ha_tuya_ble",
      "version": "0.3.1",
      "requirements": [
        "tuya-iot-py-sdk==0.6.6",
        "pycountry>23.0.0"
      ]
    },
    "openplantbook": {
      "documentation": "https://github.com/Olen/home-assistant-openplantbook/",
      "version": "1.3.2",
      "requirements": [
        "json-timeseries==0.1.7",
        "openplantbook-sdk==0.4.7"
      ]
    },
    "plant": {
      "documentation": "https://github.com/Olen/homeassistant-plant/",
      "version": "2026.2.1",
      "requirements": [
        "async-timeout>=4.0.2"
      ]
    },
    "bambu_lab": {
      "documentation": "https://github.com/greghesp/ha-bambulab",
      "version": "2.2.20",
      "requirements": [
        "beautifulsoup4"
      ]
    },
    "google_maps": {
      "documentation": "https://github.com/pnbruckner/ha-google-maps/blob/1.5.0/README.md",
      "version": "1.5.0",
      "requirements": []
    },
    "sonoff": {
      "documentation": "https://github.com/AlexxIT/SonoffLAN",
      "version": "3.9.3",
      "requirements": [
        "pycryptodome>=3.6.6"
      ]
    },
    "ssh_command": {
      "documentation": "https://github.com/AlexxIT/SSHCommand",
      "version": "1.2.0",
      "requirements": [
        "paramiko"
      ]
    },
    "pyscript": {
      "documentation": "https://github.com/custom-components/pyscript",
      "version": "1.7.0",
      "requirements": [
        "croniter==6.0.0",
        "watchdog==6.0.0"
      ]
    }
  },
  "integration_manifest": {
    "domain": "sonoff",
    "name": "Sonoff",
    "codeowners": [
      "AlexxIT"
    ],
    "config_flow": true,
    "dependencies": [
      "http",
      "zeroconf"
    ],
    "documentation": "https://github.com/AlexxIT/SonoffLAN",
    "iot_class": "local_push",
    "issue_tracker": "https://github.com/AlexxIT/SonoffLAN/issues",
    "requirements": [
      "pycryptodome>=3.6.6"
    ],
    "version": "3.9.3",
    "is_built_in": false,
    "overwrites_built_in": false
  },
  "setup_times": {
    "null": {
      "setup": 9.243696695193648e-05
    },
    "01KJXA5J77QWF3B808P5BHMRJ0": {
      "wait_import_platforms": -0.00023423100356012583,
      "wait_base_component": -4.56259616400348,
      "config_entry_setup": 5.965628643985838
    }
  },
  "data": {
    "version": "7c75c46",
    "cloud_auth": true,
    "config": null,
    "options": {
      "debug": false,
      "homes": 1,
      "mode": "auto"
    },
    "errors": [
      {
        "name": "custom_components.sonoff.core.entity",
        "message": [
          "Can't init device: {'name': 'Laundry Room', 'deviceid': '1002213b9a', 'apikey': 'ebeb439c-5412-4122-b211-aaa5f26cef71', 'extra': {'model': 'BL1-ALL-LED', 'mac': 'd0:27:03:b9:37:06', 'apmac': 'd0:27:03:b9:37:07', 'uiid': 136, 'ui': 'RGB\u4e94\u8272\u706f_\u652f\u63012.4G\u8f7b\u667a\u80fd', 'modelInfo': '611e0d429d679662bd8defd0', 'brandId': '5c4c1aee3a7d24c7100be054', 'itCredential': 'agplyQf5cqJ58WYs', 'description': 'RGBCW\u4e94\u8272\u7403\u6ce1\u5f97\u90a6\u7248\u672c', 'manufacturer': '\u6df1\u5733\u677e\u8bfa\u6280\u672f\u6709\u9650\u516c\u53f8'}, 'brandName': 'SONOFF', 'brandLogo': 'https://eu-ota.coolkit.cc/logo/q62PevoglDNmwUJ9oPE7kRrpt1nL1CoA.png', 'showBrand': True, 'productModel': 'B05-BL', 'tags': {'m_ef71_nigu': 'on', 'un_cct_ef71_.com': [{'ltype': 'white', 'colorTemp': 100, 'bright': 100, 'select': False}, {'ltype': 'white', 'colorTemp': 50, 'bright': 100, 'select': False}, {'ltype': 'white', 'colorTemp': 0, 'bright': 100, 'select': True}]}, 'devConfig': {}, 'settings': {'opsNotify': 0, 'opsHistory': 1, 'alarmNotify': 1, 'wxAlarmNotify': 0, 'wxOpsNotify': 0, 'wxDoorbellNotify': 0, 'appDoorbellNotify': 1}, 'devGroups': [], 'family': {'familyid': '6026fc410f7a7f00072a3f45', 'index': -14, 'members': [], 'guests': [], 'roomid': '662005cb15ef2e00082f3493'}, 'shareTo': [], 'devicekey': 'f2f02dc6-1a7e-4497-914e-3ae447b438d2', 'online': True, 'params': {'bindInfos': {'gaction': ['ebeb439c-5412-4122-b211-aaa5f26cef71_ewelinkGoogleHome'], 'alexa': ['ebeb439c-5412-4122-b211-aaa5f26cef71_26ca1996a20e8bd63617ab272d4eeede1d2d8e32']}, 'version': 8, 'fwVersion': '1.7.0', 'rssi': -53, 'bssid': '5c:02:14:ba:9d:03', 'ltype': 'white', 'mac': '24:94:94:cc:71:cb', 'ssid': 'I Believe Wi Can Fi', 'switch': 'on', 'white': {'br': 43, 'ct': 11}, 'only_device': {'ota': 'success', 'ota_fail_reason': 0}, 'TZ': 'Atlantic/Faroe', 'slowlyDimmed': 500, 'slowlyLit': 500, 'addSubDevState': 'off', 'addTimeOut': 10}, 'denyFeatures': ['startup', 'slow_start', 'slowStartTime', 'upgradeFirmwareReminder', 'reverseRemoteCCT', 'atom', 'segmentedDimmig', 'onlineWhenLightOff', 'autoUpdateOta', 'matter_pair_mode', 'timer_support_DST', 'startupWithFlip', 'tzInfo', 'startupWithDiy', 'remoteControl', 'lightScene', 'remoteSupport'], 'isSupportGroup': True, 'isSupportedOnMP': False, 'isSupportChannelSplit': False, 'deviceFeature': {}}"
        ],
        "level": "ERROR",
        "source": [
          "custom_components/sonoff/core/entity.py",
          88
        ],
        "timestamp": 1772659797.7785096,
        "exception": "Traceback (most recent call last):\n  File \"/config/custom_components/sonoff/core/entity.py\", line 88, in __init__\n    self.internal_update(None if self.event else params)\n    ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/config/custom_components/sonoff/core/entity.py\", line 113, in internal_update\n    self.set_state(params)\n    ~~~~~~~~~~~~~~^^^^^^^^\n  File \"/config/custom_components/sonoff/light.py\", line 902, in set_state\n    state[\"ct\"], self.min_ct, self.max_ct, self.max_mireds, self.min_mireds\n                                           ^^^^^^^^^^^^^^^\nAttributeError: 'XLightB05B' object has no attribute 'max_mireds'",
        "count": 1,
        "first_occurred": 1772659797.7785096
      },
      {
        "name": "homeassistant.components.light",
        "message": [
          "Error adding entity sonoff.sonoff_1002213b9a for domain light with platform sonoff"
        ],
        "level": "ERROR",
        "source": [
          "helpers/entity_platform.py",
          680
        ],
        "timestamp": 1772659798.5068994,
        "exception": "Traceback (most recent call last):\n  File \"/usr/src/homeassistant/homeassistant/helpers/entity_platform.py\", line 680, in _async_add_entities\n    await self._async_add_entity(\n        entity, False, entity_registry, config_subentry_id\n    )\n  File \"/usr/src/homeassistant/homeassistant/helpers/entity_platform.py\", line 915, in _async_add_entity\n    capabilities=entity.capability_attributes,\n                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/usr/src/homeassistant/homeassistant/components/light/__init__.py\", line 875, in capability_attributes\n    min_color_temp_kelvin = self.min_color_temp_kelvin\n                            ^^^^^^^^^^^^^^^^^^^^^^^^^^\n  File \"/config/custom_components/sonoff/light.py\", line 147, in min_color_temp_kelvin\n    return color_util.color_temperature_mired_to_kelvin(self.max_mireds)\n                                                        ^^^^^^^^^^^^^^^\nAttributeError: 'XLightB05B' object has no attribute 'max_mireds'",
        "count": 1,
        "first_occurred": 1772659798.5068994
      }
    ],
    "device": {
      "uiid": 136,
      "params": {
        "bindInfos": "***",
        "version": 8,
        "fwVersion": "1.7.0",
        "rssi": -53,
        "bssid": "***",
        "ltype": "white",
        "mac": "***",
        "ssid": "***",
        "switch": "on",
        "white": {
          "br": 43,
          "ct": 11
        },
        "only_device": {
          "ota": "success",
          "ota_fail_reason": 0
        },
        "TZ": "Atlantic/Faroe",
        "slowlyDimmed": 500,
        "slowlyLit": 500,
        "addSubDevState": "off",
        "addTimeOut": 10
      },
      "model": "B05-BL",
      "online": true,
      "local": true,
      "localtype": "light",
      "host": "192.168.188.31:8081",
      "deviceid": "1002213b9a"
    }
  },
  "issues": []
}

[Neuropsihopuppu]

This might also be usefull:

[santiniuk]

This fix resolved my issues after HA 2026.3.0 update.
Thanks for the quick solution.

[AlexxIT]

https://github.com/AlexxIT/SonoffLAN/releases/tag/v3.10.0

[ArthurZa]

My B05-BL SonOff lights also stopped working after the 2026.3.0 update. Home assistant gives me the error below. I replaced the code in my custom_components/sonoff/light.py file with the code solution in this thread, saved, Initialised the Sonoff integration, restarted HA. This did not solve the problem for me.
All lights work in the eWeLink app. (I had not used the app in a while and had to re-pair lights.)

HA Error: "This entity is no longer being provided by the sonoff integration. If the entity is no longer in use, delete it in settings."
See diagnostics file below:

{
  "home_assistant": {
    "installation_type": "Home Assistant OS",
    "version": "2026.3.0",
    "dev": false,
    "hassio": true,
    "virtualenv": false,
    "python_version": "3.14.2",
    "docker": true,
    "arch": "aarch64",
    "timezone": "Africa/Johannesburg",
    "os_name": "Linux",
    "os_version": "6.12.47-haos-raspi",
    "container_arch": "aarch64",
    "supervisor": "2026.02.3",
    "host_os": "Home Assistant OS 17.1",
    "docker_version": "29.1.3",
    "chassis": "embedded",
    "run_as_root": true
  },
  "custom_components": {
    "mikrotik_router": {
      "documentation": "https://github.com/tomaae/homeassistant-mikrotik_router",
      "version": "0.0.0",
      "requirements": [
        "librouteros>=3.4.1",
        "mac-vendor-lookup>=0.1.12"
      ]
    },
    "llmvision": {
      "documentation": "https://llmvision.gitbook.io/getting-started/",
      "version": "1.6.0",
      "requirements": [
        "boto3==1.37.1",
        "aiosqlite==0.21.0",
        "aiofile==3.9.0"
      ]
    },
    "prometheus_sensor": {
      "documentation": "https://github.com/mweinelt/ha-prometheus-sensor",
      "version": "1.2.1",
      "requirements": []
    },
    "alexa_media": {
      "documentation": "https://github.com/alandtse/alexa_media_player/wiki",
      "version": "5.14.0",
      "requirements": [
        "alexapy==1.29.17",
        "packaging>=20.3",
        "wrapt>=1.14.0",
        "dictor>=0.1.12,<0.2"
      ]
    },
    "hikconnect": {
      "documentation": "https://github.com/tomasbedrich/home-assistant-hikconnect",
      "version": "2.4.0",
      "requirements": [
        "hikconnect==1.2.1"
      ]
    },
    "presence_simulation": {
      "documentation": "https://github.com/slashback100/presence_simulation",
      "version": "5.1",
      "requirements": []
    },
    "localtuya": {
      "documentation": "https://github.com/rospogrigio/localtuya/",
      "version": "5.2.3",
      "requirements": []
    },
    "hikvision_next": {
      "documentation": "https://github.com/maciej-or/hikvision_next",
      "version": "1.1.1",
      "requirements": [
        "xmltodict==0.13.0",
        "requests-toolbelt==1.0.0"
      ]
    },
    "sonoff": {
      "documentation": "https://github.com/AlexxIT/SonoffLAN",
      "version": "3.9.3",
      "requirements": [
        "pycryptodome>=3.6.6"
      ]
    },
    "resmed_myair": {
      "documentation": "https://github.com/prestomation/resmed_myair_sensors",
      "version": "v0.2.6",
      "requirements": [
        "PyJWT"
      ]
    },
    "spook_inverse": {
      "documentation": "https://spook.boo",
      "version": "4.0.1",
      "requirements": []
    },
    "xtend_tuya": {
      "documentation": "https://github.com/azerty9971/xtend_tuya",
      "version": "4.3.3",
      "requirements": []
    },
    "solarman": {
      "documentation": "https://github.com/StephanJoubert/home_assistant_solarman/blob/main/README.md",
      "version": "1.0.0",
      "requirements": [
        "pyyaml",
        "pysolarmanv5"
      ]
    },
    "victron": {
      "documentation": "https://github.com/sfstar/hass-victron",
      "version": "v0.6.4",
      "requirements": [
        "pymodbus>=3.8.0"
      ]
    },
    "dahua": {
      "documentation": "https://github.com/rroller/dahua",
      "version": "0.9.76",
      "requirements": []
    },
    "hacs": {
      "documentation": "https://hacs.xyz/docs/use/",
      "version": "2.0.5",
      "requirements": [
        "aiogithubapi>=22.10.1"
      ]
    },
    "spook": {
      "documentation": "https://spook.boo",
      "version": "4.0.1",
      "requirements": []
    }
  },
  "integration_manifest": {
    "domain": "sonoff",
    "name": "Sonoff",
    "codeowners": [
      "AlexxIT"
    ],
    "config_flow": true,
    "dependencies": [
      "http",
      "zeroconf"
    ],
    "documentation": "https://github.com/AlexxIT/SonoffLAN",
    "iot_class": "local_push",
    "issue_tracker": "/api/sonoff/bbae80be-7413-4a8d-91f8-7cc19efbddb8",
    "requirements": [
      "pycryptodome>=3.6.6"
    ],
    "version": "3.9.3",
    "is_built_in": false,
    "overwrites_built_in": false
  },
  "setup_times": {
    "null": {
      "setup": 0.0004401480546221137
    },
    "704b8109b53cd304a57240287e5c4630": {
      "wait_import_platforms": -0.0003978889435529709,
      "wait_base_component": -0.004313420969992876,
      "config_entry_setup": 3.1782308239489794
    }
  },
  "data": {
    "version": "b15edcb",
    "cloud_auth": false,
    "config": null,
    "options": {
      "mode": "auto",
      "debug": true
    },
    "errors": [],
    "device": {
      "deviceid": "10017f8b09"
    }
  },
  "issues": []
}

[AlexxIT]

You don't using latest integration version.