Technically, you can program the UV-S9 Plus manually using the keypad and the A/B frequency selection. This is useful for field adjustments when you don't have a computer nearby. However, manual programming has significant limitations:
Before you download any software, you must address the hardware connection. You cannot program the radio via Bluetooth or Wi-Fi; you need a USB programming cable. baofeng uv-s9 plus programming software
For Linux users (Ubuntu/Debian):
is specifically tailored for the UV-S9 series, including the Plus. RadioReference.com Forums Hardware Requirements To connect your radio to a computer, you will need: Programming Cable : A standard Baofeng 2-pin (K-plug) USB programming cable. Technically, you can program the UV-S9 Plus manually