This page needs WebUSB. Use Chrome or Edge on a computer (Windows, macOS, Linux or ChromeOS).
1. Connect your GB-Link
Flash the stock GB-Link firmware first at gblink.io, then close every GB-Link tab - only one tab can use the device at a time.
No device connected.
2. Start a link mode
Plug the link cable into the Game Boy Advance first. The page cancels any running mode, sets 3.3 V and starts the mode.
State: Idle