diff --git a/AGENTS.md b/AGENTS.md
new file mode 100644
index 0000000..288707f
--- /dev/null
+++ b/AGENTS.md
@@ -0,0 +1,11 @@
+# AGENTS.md
+
+## Setup commands
+- this projects uses poetry for package management 
+- if something should be run in a python env use 'poetry run'
+
+
+## Application
+- this is a bluetooth Auracast transmitter application
+- it consists of multicast_frontend.py and multicast_server.py mainly which connect to each other via a rest api
+
diff --git a/src/auracast/server/multicast_frontend.py b/src/auracast/server/multicast_frontend.py
index 028ae14..1858862 100644
--- a/src/auracast/server/multicast_frontend.py
+++ b/src/auracast/server/multicast_frontend.py
@@ -24,7 +24,7 @@ from auracast.utils.frontend_auth import (
 _THIS_DIR = os.path.dirname(__file__)
 _FAVICON_PATH = os.path.abspath(os.path.join(_THIS_DIR, '..', 'utils', 'favicon.ico'))
 favicon = Image.open(_FAVICON_PATH)
-st.set_page_config(page_title="Castbox", page_icon=favicon, layout="centered")
+st.set_page_config(page_title="Beacon", page_icon=favicon, layout="centered")
 
 # Load environment variables from a .env file if present
 load_dotenv()
diff --git a/src/auracast/server/multicast_server.py b/src/auracast/server/multicast_server.py
index 63a5050..41d29b5 100644
--- a/src/auracast/server/multicast_server.py
+++ b/src/auracast/server/multicast_server.py
@@ -1121,14 +1121,14 @@ async def get_version():
 
 @app.get("/check_update")
 async def check_update():
-    """Check for available updates by comparing current version with latest release tag."""
+    """Check for available updates by comparing current version with latest tag on main branch."""
     try:
         # server -> auracast -> src -> bumble-auracast (3 levels up)
         project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..'))
         
-        # Fetch all tags and refs from origin
+        # Fetch tags and main branch from origin
         proc = await asyncio.create_subprocess_exec(
-            "git", "fetch", "--tags", "--force", "origin",
+            "git", "fetch", "--tags", "origin", "main",
             cwd=project_root,
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE
@@ -1137,24 +1137,20 @@ async def check_update():
         if proc.returncode != 0:
             log.warning("git fetch failed: %s", stderr.decode())
         
-        # Get the latest tag sorted by version (semver-like sorting)
-        # This gets all tags, sorts them by version, and takes the last one
+        # Get the latest tag reachable from main branch
         proc = await asyncio.create_subprocess_exec(
-            "git", "tag", "--sort=version:refname",
+            "git", "describe", "--tags", "--abbrev=0", "origin/main",
             cwd=project_root,
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE
         )
         stdout, stderr = await proc.communicate()
         if proc.returncode != 0:
-            return {"available": None, "error": f"Could not list tags: {stderr.decode()}"}
+            return {"available": None, "error": f"No tags found on main branch: {stderr.decode()}"}
         
-        tags = stdout.decode().strip().split('\n')
-        tags = [t for t in tags if t]  # Filter empty strings
-        if not tags:
-            return {"available": None, "error": "No tags found in repository"}
-        
-        latest_tag = tags[-1]  # Last tag after version sorting
+        latest_tag = stdout.decode().strip()
+        if not latest_tag:
+            return {"available": None, "error": "No tags found on main branch"}
         
         # Get current version
         current_version = (await get_version()).get("version", "unknown")
@@ -1172,7 +1168,7 @@ async def check_update():
 
 @app.post("/system_update")
 async def system_update():
-    """Update application: git pull release branch (latest tag), poetry install, restart services."""
+    """Update application: git pull main branch (latest tag), poetry install, restart services."""
     try:
         # Best-effort: stop any active streaming cleanly
         try:
@@ -1183,10 +1179,10 @@ async def system_update():
         # server -> auracast -> src -> bumble-auracast (3 levels up)
         project_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..', '..', '..'))
 
-        # 1. Fetch and checkout the latest tag from the release branch
-        # First fetch all tags and the release branch
+        # 1. Fetch and checkout the latest tag from the main branch
+        # First fetch all tags and the main branch
         proc = await asyncio.create_subprocess_exec(
-            "git", "fetch", "--tags", "origin", "release",
+            "git", "fetch", "--tags", "origin", "main",
             cwd=project_root,
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE
@@ -1196,9 +1192,9 @@ async def system_update():
             log.error("git fetch failed: %s", stderr.decode())
             raise HTTPException(status_code=500, detail=f"git fetch failed: {stderr.decode()}")
 
-        # Get the latest tag on the release branch
+        # Get the latest tag on the main branch
         proc = await asyncio.create_subprocess_exec(
-            "git", "describe", "--tags", "--abbrev=0", "origin/release",
+            "git", "describe", "--tags", "--abbrev=0", "origin/main",
             cwd=project_root,
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE