If CHIRP or the WLN software shows a blank dropdown menu under COM ports:
CHIRP is a free, open-source radio programming tool. It supports the WLN KD-C1 under the Retevis RT22 driver or with direct WLN KD-C1 support. wln kd-c1 usb driver
: Align the 16 channels with specific local repeaters or other radio brands. Manage Features If CHIRP or the WLN software shows a
Download Prolific Driver version 3.2.0.0 (from 2007) or 3.3.2.105 (from 2008). Use the Device Manager "Let me pick" method outlined in Step 2 to force Windows to use the older version. 2. Software Cannot Find the COM Port Manage Features Download Prolific Driver version 3
Avoid fake driver download websites that bundle malware. Only download directly from the chip manufacturer or trusted open-source repositories.
Download the PL2303 driver installer from the Prolific technology website. Step 3: Run the Installer