Unsupported Browser
Your current browser does not support the Web Serial API, which is required for flashing firmware.
Please use Google Chrome (v89+) or Microsoft Edge (v89+) to use this tool.
Mac users: install the USB driver first
macOS may not recognize the scale until you install the WCH CH34x/CH343 USB serial driver.
Download and install it from WCHSoftGroup/ch34xser_macos, then reconnect the scale.
See the guide for details.
Half Decent Scale Updater
Update your Half Decent Scale firmware directly from your browser using the Web Serial API. No software installation required.