diff --git a/custom_components/aurora_solar/config_flow.py b/custom_components/aurora_solar/config_flow.py
index 98a2088..ce1fe88 100644
--- a/custom_components/aurora_solar/config_flow.py
+++ b/custom_components/aurora_solar/config_flow.py
@@ -1,4 +1,6 @@
-class AuroraSolarConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+# ALT:
+
+"""class AuroraSolarConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
     async def async_step_user(self, user_input=None):
         errors = {}
         if user_input is not None:
@@ -17,3 +19,108 @@ class AuroraSolarConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
             }),
             errors=errors
         )
+"""
+
+
+"""Config flow for ABB Aurora Solar Inverter integration."""
+from __future__ import annotations
+import logging
+from typing import Any
+
+import voluptuous as vol
+
+from homeassistant import config_entries
+from homeassistant.core import HomeAssistant, callback
+from homeassistant.data_entry_flow import FlowResult
+from homeassistant.exceptions import HomeAssistantError
+
+from .const import DOMAIN, CONF_HOST, CONF_PORT, CONF_SLAVE_ID
+
+_LOGGER = logging.getLogger(__name__)
+
+# Schema für die Benutzereingaben (Host, Port, Slave-ID)
+DATA_SCHEMA = vol.Schema(
+    {
+        vol.Required(CONF_HOST): str,
+        vol.Required(CONF_PORT, default=5000): int,
+        vol.Required(CONF_SLAVE_ID, default=2): int,
+    }
+)
+
+async def validate_input(hass: HomeAssistant, data: dict[str, Any]) -> dict[str, Any]:
+    """Prüfe, ob die Verbindung zum Wechselrichter möglich ist."""
+    # Hier könntest du eine Verbindungstest-Logik einbauen (z. B. mit `AuroraTCPClient`).
+    # Beispiel: Test, ob der Host erreichbar ist.
+    # Falls der Test fehlschlägt, wirf eine Exception:
+    # if not await test_connection(data[CONF_HOST], data[CONF_PORT], data[CONF_SLAVE_ID]):
+    #     raise CannotConnect
+    return {"title": f"Wechselrichter {data[CONF_SLAVE_ID]}"}
+
+class AuroraSolarConfigFlow(config_entries.ConfigFlow, domain=DOMAIN):
+    """Handle a config flow for ABB Aurora Solar Inverter."""
+
+    VERSION = 1
+    CONNECTION_CLASS = config_entries.CONN_CLASS_LOCAL_POLL
+
+    async def async_step_user(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Handle the initial step (GUI-Formular anzeigen)."""
+        errors: dict[str, str] = {}
+
+        if user_input is not None:
+            try:
+                info = await validate_input(self.hass, user_input)
+                # Prüfe, ob dieser Wechselrichter bereits konfiguriert ist
+                await self.async_set_unique_id(f"{user_input[CONF_HOST]}_{user_input[CONF_SLAVE_ID]}")
+                self._abort_if_unique_id_configured()
+                # Erstelle den Config-Entry
+                return self.async_create_entry(title=info["title"], data=user_input)
+            except CannotConnect:
+                errors["base"] = "cannot_connect"
+            except Exception:  # pylint: disable=broad-except
+                _LOGGER.exception("Unexpected exception")
+                errors["base"] = "unknown"
+
+        return self.async_show_form(
+            step_id="user",
+            data_schema=DATA_SCHEMA,
+            errors=errors,
+        )
+
+    @staticmethod
+    @callback
+    def async_get_options_flow(
+        config_entry: config_entries.ConfigEntry,
+    ) -> config_entries.OptionsFlow:
+        """Optionen für bestehende Einträge (z. B. Slave-ID ändern)."""
+        return AuroraSolarOptionsFlow(config_entry)
+
+class AuroraSolarOptionsFlow(config_entries.OptionsFlow):
+    """Handle options flow for ABB Aurora Solar Inverter."""
+
+    def __init__(self, config_entry: config_entries.ConfigEntry) -> None:
+        """Initialize options flow."""
+        self.config_entry = config_entry
+
+    async def async_step_init(
+        self, user_input: dict[str, Any] | None = None
+    ) -> FlowResult:
+        """Manage the options (z. B. Slave-ID ändern)."""
+        if user_input is not None:
+            return self.async_create_entry(title="", data=user_input)
+
+        return self.async_show_form(
+            step_id="init",
+            data_schema=vol.Schema(
+                {
+                    vol.Required(
+                        CONF_SLAVE_ID,
+                        default=self.config_entry.options.get(CONF_SLAVE_ID, 2),
+                    ): int,
+                }
+            ),
+        )
+
+class CannotConnect(HomeAssistantError):
+    """Error to indicate we cannot connect to the inverter."""