diff --git a/rip/config.py b/rip/config.py
index 35e9782..e3a431f 100644
--- a/rip/config.py
+++ b/rip/config.py
@@ -70,11 +70,19 @@ class Config:
     def update(self):
         """Reset the config file except for credentials."""
         self.reset()
-        temp = copy.deepcopy(self.defaults)
-        temp["qobuz"].update(self.file["qobuz"])
-        temp["tidal"].update(self.file["tidal"])
-        self.dump(temp)
-        del temp
+        # Save original credentials
+        qobuz_creds = self.file["qobuz"]
+        tidal_creds = self.file["tidal"]
+
+        # Reset and load config file
+        shutil.copy(self.default_config_path, self._path)
+        self.load()
+
+        # Set credentials and download directory, then save
+        self.file["qobuz"].update(qobuz_creds)
+        self.file["tidal"].update(tidal_creds)
+        self.file["downloads"]["folder"] = DOWNLOADS_DIR
+        self.save()
 
     def save(self):
         """Save the config state to file."""
diff --git a/streamrip/utils.py b/streamrip/utils.py
index a1afa74..90c41ab 100644
--- a/streamrip/utils.py
+++ b/streamrip/utils.py
@@ -230,7 +230,7 @@ class DownloadStream:
         self.request = self.session.get(
             url, allow_redirects=True, stream=True, params=params
         )
-        self.file_size = int(self.request.headers["Content-Length"])
+        self.file_size = int(self.request.headers.get("Content-Length", 0))
 
         if self.file_size == 0:
             raise NonStreamable