Prevents unsupported CTCSS and DCS codes being manually added to the dropdown menus, because even if codes are added to the menus they are not supported by the hardware or the firmware
Firmware loader for STM32 MCU based radios e.g. UV380/DM1701/MD2017/MD9600 now fully erases the entire MCU (CPU) before installing the OpenGD77 firmware, to remove any traces of the official firmware, to avoid possibe conflicts between the official firmware and the OpenGD77 firmware