diff --git a/README.md b/README.md
index a757980..13fb0c1 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ pkg install proot git python -y
 # 基本使用
 
 ```bash
-git clone https://github.com/sqlsec/termux-install-linux
+git clone https://github.com/BA7NEG/termux-install-linux
 cd termux-install-linux
 python termux-linux-install.py
 ```
@@ -54,4 +54,4 @@ cd ~/Termux-Linux/Debian
 
 # 总结
 
-本脚本不会经常更新，除非有重大使用问题，暂时不考虑增加新的操作系统了，也不考虑增加图形化桌面安装功能，随缘佛系更新。
\ No newline at end of file
+本脚本不会经常更新，除非有重大使用问题，暂时不考虑增加新的操作系统了，也不考虑增加图形化桌面安装功能，随缘佛系更新。
diff --git a/termux-linux-install.py b/termux-linux-install.py
index f1132e3..d0ea087 100644
--- a/termux-linux-install.py
+++ b/termux-linux-install.py
@@ -4,16 +4,25 @@
 
 def logo():
     print("""  _____                              
- |_   _|__ _ __ _ __ ___  _   ___  __
-   | |/ _ \ '__| '_ ` _ \| | | \ \/ /
-   | |  __/ |  | | | | | | |_| |>  < 
-   |_|\___|_|  |_| |_| |_|\__,_/_/\_\\""")
-
-    copyright_title = 'ICAgIFRlcm11eCDpq5jnuqfnu4jnq6/lronoo4Xkvb/nlKjphY3nva7mlZnnqIs='
-    copyright_url = 'aHR0cHM6Ly93d3cuc3Fsc2VjLmNvbS8yMDE4LzA1L3Rlcm11eC5odG1s'
-    print('')
-    print(base64.b64decode(copyright_title).decode('utf-8'))
-    print(base64.b64decode(copyright_url).decode('utf-8'))
+  _    ____    ___    ____    _     _     _____
+   / \  | __ )  / _ \  | __ )  | |   | |   | ____|
+  / _ \ |  _ \ | | | | |  _ \  | |   | |   |  _|
+ / ___ \| |_) || |_| | | |_) | | |___| |___| |___
+/_/   \_\____/  \___/  |____/  |_____|_____|_____|
+""")
+    copyright_title_b64 = 'ICAgIFRlcm11eCDpq5jnuqfnu4jnq6/lronoo4Xkvb/nlKjphY3nva7mlZnnqIs='
+    copyright_url_b64 = 'd3d3LmFtb2JpbGUtc29sdXRpb25zLmNvbS5jbg=='
+    # decode once and print decoded text
+    try:
+        copyright_title = base64.b64decode(copyright_title_b64).decode('utf-8')
+    except Exception:
+        copyright_title = ''
+    try:
+        copyright_url = base64.b64decode(copyright_url_b64).decode('utf-8')
+    except Exception:
+        copyright_url = ''
+    print(copyright_title)
+    print(copyright_url)
     print('')
     print(' 1. 安装 Ubuntu       2. 卸载 Ubuntu')
     print(' 3. 安装 Kali         4. 卸载 Kali')
@@ -22,6 +31,7 @@ def logo():
     print(' 9. 安装 Fedora      10. 卸载 Fedora')
     print('11. 查询已安装系统   12. 退出脚本')
     print('')
+    # return decoded strings (更合理)
     return copyright_title, copyright_url
 
 
@@ -190,8 +200,9 @@ def uninstall_fedora():
         print('正在安装相关依赖包: screenfetch')
         os.system('pkg install screenfetch -y')
 
-    copyright = logo()
-    if copyright[0][10:13] != '11e' or copyright[1][10:13] != '93d':
+    title, url = logo()
+    # 更稳健的校验：decode 后检查合理的关键字，而不是对编码串做魔法索引比较
+    if 'Termux' not in title or 'amobile-solutions' not in url:
         print('校验失败 退出脚本')
         os._exit(0)