Upgrading instruction is attached with the software,and you may also follow the ways below
1.Download the software from GuliKit website.
2.Turn off the controller,use the USB A to USB C cable to connect the controller and your computer.Hold the Set button(Gear button) in the middle and then press the power button(or any button of A/B/X/Y) turn it on. Controller enters into updating mode now.
3..Go to computer,unzip the file and open the software, click the "Update Firmware" icon and complete updating.
Note: Don't unplug the cable during updating. Controller will restart by itself after updating.