For the Ultimate Wireless 2, check this gist.
TL;DR:
- Get a Windows Machine (a VM works too)
- Download the 8BitDo Firmware updater
- Update both the controller and the dongle’s firmware
- Add the udev rule to your machine
- When turning the controller on, hold the B button*
Tada, Gyro and extra buttons.
Not sure if it also works over wired and bluetooth but can confirm it works over the 2.4g dongle.
*: Pulling it out of the dock while holding the B button won’t work for some reason.
You must pull it out, turn it off, and turn it back on while holding the B button for it to actually work. Annoying!














Based.
Maybe a third-party Ninty controller though?