In your chosen update tool, select the COM port associated with your cable. Select your

GitHub – joaquimorg/uv-kx-tools Live URL: home.joaquim.org/k5 License: MIT

To download verified update tools for Quansheng portable radios like the Go to product viewer dialog for this item.

Ensure the URL explicitly contains qsfj.com (Quansheng's official domain). Open-Source Web Flashers (GitHub)

While holding PTT, turn the volume/power knob clockwise to .

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Select your verified, downloaded firmware file (e.g., an official update or a trusted custom firmware file like Egzumer or IJV ending in .bin ). Click the or Write button.