diff --git a/.coverage b/.coverage
index cbd66c9..3476c12 100644
Binary files a/.coverage and b/.coverage differ
diff --git a/src/solarlog_cli/solarlog_client.py b/src/solarlog_cli/solarlog_client.py
index f5c4a75..b3549b2 100644
--- a/src/solarlog_cli/solarlog_client.py
+++ b/src/solarlog_cli/solarlog_client.py
@@ -41,6 +41,7 @@ def __init__(self, host: str, session: ClientSession | None, password: str = "")
 
         self._hashed_pwd: bool = False
         self._close_session: bool = True
+        self._token = "" #required for older firmware, where cookie is not sufficient
 
     async def test_connection(self) -> bool:
         """Test the connection to Solar-Log."""
@@ -114,6 +115,9 @@ async def login(self) -> bool:
         self.session.cookie_jar.update_cookies(
             {"SolarLog": response.cookies["SolarLog"].value})
 
+        if not self._hashed_pwd:
+            self._token = response.cookies["SolarLog"].value
+
         _LOGGER.debug("response: %s", text)
         _LOGGER.debug("cookies: %s", response.cookies)
         _LOGGER.debug("Login successful, token: %s",
@@ -131,6 +135,9 @@ async def execute_http_request(self, body: str, path: str = "getjp", timeout: fl
 
         header = {"Content-Type": "text/html", "X-SL-CSRF-PROTECTION": "1"}
 
+        if self._token != "":
+            body = f"token={self._token}; " + body
+
         _LOGGER.debug("HTTP-request header: %s", header)
         _LOGGER.debug("HTTP-request body: %s", body)