Icom Ic-f5123d Programming Software [best] -

Never start a new codeplug from scratch. Instead:

A specialized cable, such as the OPC-1122U (USB type), is required to connect the radio’s microphone jack to your computer . Icom Ic-f5123d Programming Software

If using a USB cable (clone or official), follow these steps before opening the software: Never start a new codeplug from scratch