Finally I got it works. I using the system config tool version 1.43 with Haxchi. I install the system config tool in the nand (not usb). I boot up my Jap Wii U and launch Haxchi then run the tool in sysnand.
First, in the system config tool go to Wii U Gamepad (DRC) setting, then pair the DRC. Turn on your gamepad and follow the instruction on the screen. Your gamepad will pairing successfully even your gamepad is not same with your wii u's region. Now your gamepad can be used as normal.
Second, after success with pairing DO NOT EXIT the system config tool yet, YOU MUST REBOOT the Wii U using the reboot option in the system config tool which will be the last option in the system config tool. Confirm the reboot and your TV and gamepad will goes blank for about 1, 2 minutes and then you will be in the system config tool menus again.
Now, you can exit the tool by pressing the Home button. Everything will be good to go even your turn off your Wii U. The gamepad will keep to sync after that. Good luck.
First, in the system config tool go to Wii U Gamepad (DRC) setting, then pair the DRC. Turn on your gamepad and follow the instruction on the screen. Your gamepad will pairing successfully even your gamepad is not same with your wii u's region. Now your gamepad can be used as normal.
Second, after success with pairing DO NOT EXIT the system config tool yet, YOU MUST REBOOT the Wii U using the reboot option in the system config tool which will be the last option in the system config tool. Confirm the reboot and your TV and gamepad will goes blank for about 1, 2 minutes and then you will be in the system config tool menus again.
Now, you can exit the tool by pressing the Home button. Everything will be good to go even your turn off your Wii U. The gamepad will keep to sync after that. Good luck.
Last edited by LLS,