Update README.md

README.md

@@ -23,7 +23,7 @@ bash <(curl -Ls https://raw.githubusercontent.com/mhsanaei/3x-ui/master/install.
 To install your desired version you can add the version to the end of install command. Example for ver `v1.2.6`:
 
 ```
-bash <(curl -Ls https://raw.githubusercontent.com/mhsanaei/3x-ui/master/install.sh) v1.2.6
+bash <(curl -Ls https://raw.githubusercontent.com/mhsanaei/3x-ui/master/install.sh) v1.2.8
 ```
 
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