gamesir-connect-linux — GameSir Connect (Cyclone 2 app and firmware updates) on Linux

Repackages GameSir’s official Windows-only GameSir Connect Electron app to run unmodified on Linux, including controller firmware updates: the vendor’s JieLi upgrade DLL runs in a Unicorn x86 emulator with device I/O routed to SG_IO.

Status: experimental
Verified: 2026-11-09 (0 days before this build)
How: Summary checked against the repository README on 2026-11-09. Tested environments are those the README states.
Applies to: device GameSir Cyclone 2 (USB 3537:100b and related IDs)
needs curl, 7z, unzip, node, npm, openssl, python3; a udev rule (70-gamesir.rules)
Repository: github.com/seolcu/gamesir-connect-linux
License: MIT

What it does

build.sh downloads the official installer (verified against the sha512 in GameSir’s latest.yml) and converts it on your machine. The repository contains no GameSir code.

Part	How it is handled
Runtime	Same Electron as the original, 13.6.9 linux-x64 (sha256 verified)
node-hid	Official N-API prebuild, hidraw backend
usb-detection	JS replacement polling `/sys/bus/usb` (the prebuild has symbol mismatches with Electron 13.6.9)
ffi-napi	Stubbed (only used for Windows DLLs; segfaults against system libffi)
Firmware	Official `jl_firmware_upgrade_x86.dll` emulated with Unicorn; SCSI commands go to `SG_IO`

Install

./build.sh
sudo install -m644 70-gamesir.rules /etc/udev/rules.d/ \
  && sudo udevadm control --reload-rules && sudo udevadm trigger
gamesir-connect

Run ./build.sh again when a new version is released; the app’s built-in auto-update is disabled. Not affiliated with GameSir.

Search terms

GameSir Connect Linux
GameSir Cyclone 2 Linux firmware update
3537:100b
JieLi firmware upgrade Linux

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Published 2026-11-09 · last changed 2026-11-09 · Markdown source