RetroCompass
RetroCompass

GameSir Cyclone 2 — Firmware update

Quick answer

Button combo

Logo+=(enter controller update mode)·dongle pairing button held while inserting

Steps

  1. 1Install GameSir Connect on Windows and close other controller apps.
  2. 2Controller: hold the Logo + = buttons while plugging in over USB-C to enter update mode, then click Install Firmware.
  3. 3Dongle: power off the controller (hold Logo 5 sec), then hold the dongle's pairing button while inserting it into the PC; update when it shows online.
  4. 4Wait for completion, then unplug and reconnect.

LED states

  • Slow blink / progress—Update in progress
  • Solid—Update complete / connected (XInput)
Last verified: 2026-06-20Source: gamesir.com

Firmware for the Cyclone 2 (and its 2.4G dongle) is updated with GameSir Connect on Windows — there is no firmware updater in the mobile app. Update both the controller and the dongle to the latest version to fix drift, polling, and connection bugs. Warning: do not unplug mid-update, and use the file that matches your unit, as wrong firmware can brick the controller.

FAQ

Can I update from the GameSir phone app?
No. Use GameSir Connect on Windows. The controller updates over USB-C; the dongle updates while held in pairing mode in the PC's USB port.
It bricked / won't power on after an update.
Poke the rear reset pinhole, recharge over USB-C, then retry the update in GameSir Connect with the correct firmware file.

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