MacBook Pro 13" Early 2011 Thunderbolt Firmware Version - How to update 22.1 to latest version

I bought a Kanex KTU10 to add USB 3.0 support on my machine because its only on USB 2.0. The product said my machine can support the product but when I plug it in it didn't work, while Mini DP to HDMI can work. Kanex support told me to update my firmware but I am on MacOS Sierra now how do I update my Thunderbolt Firmware on my OS version? Image below is the information of my Thunderbolt.