diff --git a/homeassistant/components/iron_os/update.py b/homeassistant/components/iron_os/update.py
index bae9ccd4c6c..786ba86f730 100644
--- a/homeassistant/components/iron_os/update.py
+++ b/homeassistant/components/iron_os/update.py
@@ -92,4 +92,7 @@ class IronOSUpdate(IronOSBaseEntity, UpdateEntity):
     @property
     def available(self) -> bool:
         """Return if entity is available."""
-        return super().available and self.firmware_update.last_update_success
+        return (
+            self.installed_version is not None
+            and self.firmware_update.last_update_success
+        )