diff --git a/homeassistant/components/bond/config_flow.py b/homeassistant/components/bond/config_flow.py
index aa22dc628da..ca8965d4d43 100644
--- a/homeassistant/components/bond/config_flow.py
+++ b/homeassistant/components/bond/config_flow.py
@@ -39,7 +39,11 @@ async def _validate_input(data: Dict[str, Any]) -> str:
         raise InputValidationError("unknown")
 
     # Return unique ID from the hub to be stored in the config entry.
-    return version["bondid"]
+    bond_id = version.get("bondid")
+    if not bond_id:
+        raise InputValidationError("old_firmware")
+
+    return bond_id
 
 
 class ConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
diff --git a/homeassistant/components/bond/strings.json b/homeassistant/components/bond/strings.json
index ba59a61d58d..5ca2278a3e5 100644
--- a/homeassistant/components/bond/strings.json
+++ b/homeassistant/components/bond/strings.json
@@ -18,6 +18,7 @@
     "error": {
       "cannot_connect": "[%key:common::config_flow::error::cannot_connect%]",
       "invalid_auth": "[%key:common::config_flow::error::invalid_auth%]",
+      "old_firmware": "Unsupported old firmware on the Bond device - please upgrade before continuing",
       "unknown": "[%key:common::config_flow::error::unknown%]"
     },
     "abort": {
diff --git a/homeassistant/components/bond/translations/en.json b/homeassistant/components/bond/translations/en.json
index 2e636bb8999..f141a450652 100644
--- a/homeassistant/components/bond/translations/en.json
+++ b/homeassistant/components/bond/translations/en.json
@@ -6,6 +6,7 @@
         "error": {
             "cannot_connect": "Failed to connect",
             "invalid_auth": "Invalid authentication",
+            "old_firmware": "Unsupported old firmware on the Bond device - please upgrade before continuing",
             "unknown": "Unexpected error"
         },
         "flow_title": "Bond: {bond_id} ({host})",
@@ -24,4 +25,4 @@
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/tests/components/bond/test_config_flow.py b/tests/components/bond/test_config_flow.py
index bd499b8ce61..8671cc4b601 100644
--- a/tests/components/bond/test_config_flow.py
+++ b/tests/components/bond/test_config_flow.py
@@ -79,6 +79,24 @@ async def test_user_form_cannot_connect(hass: core.HomeAssistant):
     assert result2["errors"] == {"base": "cannot_connect"}
 
 
+async def test_user_form_old_firmware(hass: core.HomeAssistant):
+    """Test we handle unsupported old firmware."""
+    result = await hass.config_entries.flow.async_init(
+        DOMAIN, context={"source": config_entries.SOURCE_USER}
+    )
+
+    with patch_bond_version(
+        return_value={"no_bond_id": "present"}
+    ), patch_bond_device_ids():
+        result2 = await hass.config_entries.flow.async_configure(
+            result["flow_id"],
+            {CONF_HOST: "some host", CONF_ACCESS_TOKEN: "test-token"},
+        )
+
+    assert result2["type"] == "form"
+    assert result2["errors"] == {"base": "old_firmware"}
+
+
 async def test_user_form_unexpected_client_error(hass: core.HomeAssistant):
     """Test we handle unexpected client error gracefully."""
     await _help_test_form_unexpected_error(