Most users prefer CHIRP because it is free, open-source, and supports a massive range of radios in a single interface. : When using CHIRP, if " " is not explicitly listed, try selecting the or profiles, as they often share the same cloning protocol.

| Error Message | Solution | | :--- | :--- | | "Failed to open port" | The cable isn't recognized. Reinstall the Prolific driver. | | "Check connection" | The radio was off. Turn it on, then hit "Read" again. | | "Frequency out of range" | The BF-1904 is locked to UHF (400–470Mhz). You cannot type 520Mhz. | | Corrupted .dat file | Never use BF-888S software to open a BF-1904 file. |