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8bitdo Ultimate 2 Wireless - Update firmware?

Hey all, just got the 8BitDo Ultimate Wireless 2 and just wondering how I can update the firmware? I had a look around and not sure if the updater works under wine, I had a go but didn't seem to recognise that it was plugged in.

Any advice? I primarily got this to use with my desktop and Steam Deck - maybe the Deck can update the firmware?

Edit: had to use a windows VM, pass-through the USB, then update that way. Gyro and all the buttons are recognised on the Steam Deck.

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