If using a USB cable, you must install the correct driver (often PL2303 or CH340) for your computer to recognize the COM port.

: Modern Windows versions may require specific older drivers for "clone" Prolific cables.

Successful programming depends heavily on the communication "handshake" between the computer and the radio. Connection Steps

If "Connection Failed" appears:

Never write to the radio without first reading its current configuration. Here’s how:

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  1. Weierwei Vev-3288s Programming Software -

    If using a USB cable, you must install the correct driver (often PL2303 or CH340) for your computer to recognize the COM port.

    : Modern Windows versions may require specific older drivers for "clone" Prolific cables. Weierwei Vev-3288s Programming Software

    Successful programming depends heavily on the communication "handshake" between the computer and the radio. Connection Steps If using a USB cable, you must install

    If "Connection Failed" appears:

    Never write to the radio without first reading its current configuration. Here’s how: If using a USB cable