Firmware V04, Only for MAC user(but upgrade it on Windows)
How to upgrade this software ( It is only for MAC player user)
Please follow below steps to upgrade:
Download and run the software at your PC,
Push the switch on adapter to PC MODE and connect the adapter to your computer. Wait the UPGRADE button to become active and click this button to upgrade.
Plug out the adapter after finish updating. And plug-in again to your MAC when you want to play games at Mac.
This is only for Mac user to support 4 controllers, If you have upgraded and it can not be downgraded.Kindly reminder here: if you want to play games again at PC, the controller ID no. maybe in wrong order at Window 8.1 version ( Maybe your controller 1 will be indenfied as Controller 2..) after you upgraded .
How to update W012 GameCube Adapter for Wii U?
Download the firmware from https://www.mayflash.com/Support and install it on your Windows PC.
Push the switch on the side of the adapter to “PC mode” and plug the black USB port to your PC.
Select “Update Firmware”.
Donot disconnect the device until you are informed that the updated was completed successfully.