diff --git a/custom_components/luxtronik/base.py b/custom_components/luxtronik/base.py
index 6d4ce74..e0cb5bf 100644
--- a/custom_components/luxtronik/base.py
+++ b/custom_components/luxtronik/base.py
@@ -33,7 +33,7 @@
 # endregion Imports
 
 
-class LuxtronikEntity(CoordinatorEntity[LuxtronikCoordinator], RestoreSensor):
+class LuxtronikEntity(CoordinatorEntity[LuxtronikCoordinator], RestoreEntity):
     """Luxtronik base device."""
 
     entity_description: LuxtronikEntityDescription
diff --git a/custom_components/luxtronik/const.py b/custom_components/luxtronik/const.py
index ed88aa5..5f166e7 100644
--- a/custom_components/luxtronik/const.py
+++ b/custom_components/luxtronik/const.py
@@ -86,14 +86,13 @@ class FirmwareVersionMinor(Enum):
 DOWNLOAD_PORTAL_URL: Final = (
     "https://www.heatpump24.com/software/fetchSoftware.php?softwareID="
 )
+FIRMWARE_UPDATE_MANUAL_EN = "https://www.alpha-innotec.com/en/services/customer-support/software-center"
+FIRMWARE_UPDATE_MANUAL_DE = "https://www.alpha-innotec.com/de/services/kundendienst/software-center"
 # endregion Constants Main
 
 # region Conf
 LANG_EN: Final = "en"
 LANG_DE: Final = "de"
-LANG_DEFAULT: Final = LANG_EN
-LANGUAGES: Final = Enum("en", "de")
-LANGUAGES_SENSOR_NAMES: Final = [LANG_EN, LANG_DE]
 
 
 PRESET_SECOND_HEATSOURCE: Final = "second_heatsource"
diff --git a/custom_components/luxtronik/manifest.json b/custom_components/luxtronik/manifest.json
index ada0f6b..9088768 100755
--- a/custom_components/luxtronik/manifest.json
+++ b/custom_components/luxtronik/manifest.json
@@ -9,7 +9,7 @@
   "after_dependencies": [],
   "codeowners": ["@BenPru"],
   "iot_class": "local_polling",
-  "version": "2023.10.27",
+  "version": "2023.10.28",
   "homeassistant": "2023.1.0",
   "dhcp": [
     { "macaddress": "000E8C*" },
diff --git a/custom_components/luxtronik/update.py b/custom_components/luxtronik/update.py
index 49b4793..9ea0090 100644
--- a/custom_components/luxtronik/update.py
+++ b/custom_components/luxtronik/update.py
@@ -27,6 +27,9 @@
     CONF_HA_SENSOR_PREFIX,
     DOMAIN,
     DOWNLOAD_PORTAL_URL,
+    FIRMWARE_UPDATE_MANUAL_DE,
+    FIRMWARE_UPDATE_MANUAL_EN,
+    LANG_DE,
     LOGGER,
     DeviceKey,
     LuxCalculation,
@@ -113,12 +116,18 @@ def release_notes(self) -> str | None:
         release_url = get_manufacturer_firmware_url_by_model(self.coordinator.model)
         download_id = get_firmware_download_id(self.installed_version)
         download_url = f"{DOWNLOAD_PORTAL_URL}{download_id}"
-        if self.state:
-            upgrade_text = f"For your {self.coordinator.manufacturer} {self.coordinator.model} (Download ID {download_id}) is Firmware Version {self.__firmware_version_available} available.<br><br>"
+        manual_url = (
+            FIRMWARE_UPDATE_MANUAL_DE
+            if self.hass.config.language == LANG_DE
+            else FIRMWARE_UPDATE_MANUAL_EN
+        )
         return (
-            f'{upgrade_text}<a href="{release_url}" target="_blank" rel="noreferrer noopener">Firmware Download Portal</a>&emsp;'
-            + f'<a href="{download_url}" target="_blank" rel="noreferrer noopener">Direct Download</a><br><br>'
-            + "alpha innotec doesn't provide a changelog.<br>Please contact support for more information."
+            f'For your <a href="{release_url}" target="_blank" rel="noreferrer noopener">'
+            f"{self.coordinator.manufacturer} {self.coordinator.model} (Download ID {download_id})</a> is "
+            f'<a href="{download_url}" target="_blank" rel="noreferrer noopener">Firmware Version {self.__firmware_version_available}</a> available.<br>'
+            f'<a href="{manual_url}" target="_blank" rel="noreferrer noopener">Firmware Update Instructions</a><br><br>'
+            "The Install-Button downside has no function. It is only needed to notify in Home Assistant.<br><br>"
+            "alpha innotec doesn't provide a changelog.<br>Please contact support for more information."
         )
 
     @Throttle(MIN_TIME_BETWEEN_UPDATES)