Many ATS-25 units ship with buggy firmware. The manual provides a step-by-step for updating via a PC USB-C cable and a flashing tool (like STM32CubeProgrammer ). Never attempt this without the PDF open, as shorting the wrong boot pins can brick the device.
After a quick search, I found a few potential sources for the ATS-25 radio manual in PDF format: ats-25 radio manual pdf
The ATS-25 radio manual PDF is a detailed guide that provides instructions on the operation, maintenance, and troubleshooting of the ATS-25 radio device. The manual covers various aspects of the device, including: Many ATS-25 units ship with buggy firmware