diff --git a/gui.py b/gui.py
index 2c77243..59aa5f8 100644
--- a/gui.py
+++ b/gui.py
@@ -70,9 +70,12 @@ def draw_multi_select(stdscr, messages: list, center_row):
         )
 
 
-def multi_select(stdscr, options, title, subtitle=""):
+def multi_select(stdscr, options, title, subtitle="", checked=None):
     # curses.curs_set(0)  # 隐藏光标
-    checked = [False] * len(options)
+    if checked is None:
+        checked = [False] * len(options)
+    else:
+        checked = [bool(c) for c in checked]
     current_row = 0
     while True:
         draw_menu(stdscr, options, checked, title, subtitle, current_row)
@@ -157,6 +160,7 @@ def config(stdscr):
         ["下载蓝牙音频"],
         "选择是否下载教室蓝牙话筒的音频（如果有的话）：",
         "若教师未使用教室蓝牙话筒则该音频无声音",
+        checked=[True],
     )
 
     stdscr.clear()
diff --git a/utils.py b/utils.py
index 51866a2..17d5253 100644
--- a/utils.py
+++ b/utils.py
@@ -95,7 +95,11 @@ def get_audio_url(video_id):
 def download_audio(url, path, name):
     token = getToken()
     url = add_signature_for_url(url, token, *getSignature())
-    print(url)
-    res = requests.get(url, headers=headers)
+    _headers = headers.copy()
+    _headers["Host"] = "cvideo.yanhekt.cn"
+    res = requests.get(url, headers=_headers)
+    while res.status_code != 200:
+        time.sleep(0.1)
+        res = requests.get(url, headers=_headers)
     with open(f"{path}/{name}.aac", "wb") as f:
         f.write(res.content)