fix many things

content/self-host/rustdesk-server-oss/install/_index.en.md

@@ -102,7 +102,7 @@ Please run with the `-h` option to see help if you want to choose your own port.
 
 Click on the Menu button [ ⋮ ] on the right side of ID as shown below, and choose "ID/Relay Server".
 
-![](/docs/en/self-host/install/images/server-set-menu.png)
+![](images/server-set-menu.png)
 
 Enter the `hbbs` host or IP Address in the **ID Server** input box (local side + remote side). The other two addresses can be left blank, RustDesk will automatically deduce (if not specially set), and the Relay Server refers to `hbbr` (port 21117).
 
@@ -118,7 +118,22 @@ or
 hbbs.example.com:21116
 ```
 
-![](/docs/en/self-host/install/images/server-set-window.png)
+![](images/server-set-window.png)
+
+#### Put config in rustdesk.exe file name (Windows only)
+
+Change `rustdesk.exe` to rustdesk-`host=<host-ip-or-name>,key=<public-key-string>`.exe, e.g. rustdesk-`host=192.168.1.137,key=xfdsfsd32=32`.exe. You can see the config result in the About Window below.
+
+<a name="invalidchar"></a>
+{{% notice note %}}
+You need to set both `host` and `key`, missing either one will not work.
+
+Optionally add a `,` (comma) character after the key, before the `.exe` part as a delimiter, to avoid the key being mangled if Windows or the browser renames the file when downloading duplicated names.
+
+If there are invalid characters in the key which can not be used in a Windows file name, please remove the
+`id_ed25519` file from your server and restart `hbbs`/`hbbr`. This will cause the `id_ed25519.pub` file to regenerate. You may need to
+repeat this process until you get valid characters.
+{{% /notice %}}
 
 
 ## Key