Firmware !link! — Ats20
It is strongly recommended to reset the EEPROM after flashing to ensure new settings take effect. Hold the Encoder Button (main knob) down while turning the radio on. Understanding New Firmware Features
What is printed on your case (e.g., ATS-20, ATS-20+, SI4732)? What operating system do you use on your computer? ats20 firmware
avrdude -c usbasp -p m328p -e