diff --git a/get-frpc-url.sh b/get-frpc-url.sh
index 33f736b..77dce3f 100644
--- a/get-frpc-url.sh
+++ b/get-frpc-url.sh
@@ -60,6 +60,7 @@ get_frpc_url() {
     mirror=$(
         # nju 没有 win7 用的旧版
         # github 不支持 ipv6
+        # daocloud 加速不支持 ipv6
         # jsdelivr 不支持 github releases 文件
         if is_ipv6_only; then
             if is_need_old_version; then
@@ -71,7 +72,7 @@ get_frpc_url() {
         else
             if is_in_china; then
                 if is_need_old_version; then
-                    echo https://github.com/fatedier/frp/releases/download
+                    echo https://files.m.daocloud.io/github.com/fatedier/frp/releases/download
                 else
                     echo https://mirrors.nju.edu.cn/github-release/fatedier/frp
                 fi
diff --git a/reinstall.bat b/reinstall.bat
index 919b81e..aa69843 100644
--- a/reinstall.bat
+++ b/reinstall.bat
@@ -131,6 +131,13 @@ call :check_cygwin_installed || (
         set dir=/sourceware/cygwin
     )
 
+    rem daocloud 加速有 90 天缓存，且不支持 IPv6
+    rem https://github.com/DaoCloud/public-binary-files-mirror
+    rem 无法用查询字符串强制刷新缓存
+    rem https://files.m.daocloud.io/www.cloudflare.com/cdn-cgi/trace?a=1
+    rem https://files.m.daocloud.io/www.cloudflare.com/cdn-cgi/trace?b=2
+    rem 也就无法用 https://www.cygwin.com/setup-x86_64.exe?xxx=20250101 强制每天刷新缓存
+
     rem 下载 Cygwin
     if not exist setup-!CygwinArch!.exe (
         call :download http://www.cygwin.com/setup-!CygwinArch!.exe %~dp0setup-!CygwinArch!.exe || goto :download_failed
@@ -195,7 +202,7 @@ rem bitsadmin /transfer "%~3" /priority foreground %~1 %~2
 :download
 rem certutil 会被 windows Defender 报毒
 rem windows server 2019 要用第二条 certutil 命令
-echo Download: %~1 %~2
+echo Downloading: %~1 %~2
 del /q "%~2" 2>nul
 if exist "%~2" (echo Cannot delete %~2 & exit /b 1)