diff --git a/g4f/api/__init__.py b/g4f/api/__init__.py
index 2fd83b6b..bd4c07e6 100644
--- a/g4f/api/__init__.py
+++ b/g4f/api/__init__.py
@@ -436,7 +436,6 @@ class Api:
             provider: str = None,
             conversation_id: str = None,
             x_user: Annotated[str | None, Header()] = None,
-            cf_ipcountry: Annotated[str | None, Header()] = None,
             x_forwarded_for: Annotated[str | None, Header()] = None
         ):
             if AppConfig.demo and x_forwarded_for is not None:
@@ -511,7 +510,7 @@ class Api:
                             **{
                                 "conversation_id": None,
                                 "conversation": conversation,
-                                "user": f"{cf_ipcountry}:{x_user}" if cf_ipcountry else x_user,
+                                "user": x_user,
                             }
                         },
                         ignored=AppConfig.ignored_providers
diff --git a/g4f/requests/__init__.py b/g4f/requests/__init__.py
index 78e1811a..f2eb0936 100644
--- a/g4f/requests/__init__.py
+++ b/g4f/requests/__init__.py
@@ -177,7 +177,10 @@ async def get_nodriver(
             # Default to Edge if Chrome is not available.
             browser_executable_path = "C:\\Program Files (x86)\\Microsoft\\Edge\\Application\\msedge.exe"
             if not os.path.exists(browser_executable_path):
-                browser_executable_path = None
+                # Default to Chromium on Linux systems.
+                browser_executable_path = "/data/data/com.termux/files/usr/bin/chromium-browser"
+                if not os.path.exists(browser_executable_path):
+                    browser_executable_path = None
     debug.log(f"Browser executable path: {browser_executable_path}")
     lock_file = Path(get_cookies_dir()) / ".nodriver_is_open"
     if user_data_dir: