I did it on windows.
1. download and install SSH tool for windows. https://www.putty.org/
2. save binary "set_voltage" to windows (for example c:\voltage)
3. Change directory to the path "program files/putty" on windows command prompt
    run "cmd". blue color text is typing in cmd
    cd c:\program files\putty      (for 64 bits putty)
    or
    cd c:\program files (x86)\putty    (for 32 bits putty)
                                                                        
4. pscp -scp c:\voltage\set_voltage root@[your miners ip]:\config
    update cashed key? y or n
    root@[your miners ip]'s password: admin
    set_voltage     | 8kB  | 9.0 kB/s  | ETA  00:00:00 | 100%                               <---- copy binary "set_voltage" to miner  Done

5. Run Putty.exe , type miner ip in Host Name. Then another cmd will popup. (Putty security alert, answer yes or no)
    login as: root
    root@[your miners ip]'s password: admin
    root@antMiner:~# cd /config
    root@antMiner:/config# chmod a+x set_voltage
    root@antMiner:/config# ./set_voltage 1 fe
                                        ./set_voltage 2 fe
                                        ./set_voltage 3 fe
                                        ./set_voltage 4 fe