RetroCompass
RetroCompass

8BitDo All-Button Arcade Controller — Firmware update

Quick answer

Button combo

USB-C wired8BitDo Ultimate Software

Steps

  1. 1Install the 8BitDo Ultimate Software (V2) on Windows or macOS.
  2. 2Connect the controller with a USB-C cable (wired is required; Bluetooth/2.4G can't flash).
  3. 3Open the app; if a firmware update is offered, click Update and keep it plugged in.
  4. 4To update the 2.4G adapter, plug the adapter into USB and update it from the same app.

LED states

  • Blink during update—Flashing firmware — do not unplug
  • Solid—Update finished
Last verified: 2026-06-20Source: support.8bitdo.com

Update this controller with the 8BitDo Ultimate Software while connected by USB-C; a wired link is required because Bluetooth and the 2.4G dongle can't transfer firmware. Open the app, accept any offered update and leave the cable attached until it finishes. The 2.4G adapter is updated the same way by plugging it into a USB port. Firmware updates have added features such as Nintendo Switch 2 support.

FAQ

Can I update over Bluetooth or 2.4G?
No. Firmware must be flashed over a wired USB-C connection using the 8BitDo Ultimate Software.
Do I update the dongle separately?
Yes. Plug the 2.4G adapter into USB and update it from the same app.

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