Open command prompt and run:
avrdude -c usbasp -p m328p -U flash:r:backup.hex
The ATS20 is not just a closed commercial product; it is largely built on the open-source PU2CLR SI4735 library.
The firmware is written specifically to interact with the ATS20 hardware layout:
Do not connect the radio to USB power while programming. Connect the programmer to the ICSP header: ats20 firmware
Warning: Double check VCC and GND. Reversing them will destroy the ATmega328.
The ATS-20 is a fascinating piece of hardware that punches above its weight class, largely thanks to the efforts of the open-source community. If you own an ATS-20X and feel limited by the factory settings, exploring community firmware is the best way to unlock the device's true potential—just be sure to check your hardware revision twice before hitting "Upload."
Disclaimer: Modifying firmware carries the risk of voiding warranties or damaging hardware. Always follow the specific instructions provided by the firmware developer. Open command prompt and run: avrdude -c usbasp
The dim blue glow of a soldering iron was the only light in Elias’s workshop. On the bench sat his ATS-20, a compact SI4732-based radio that usually hummed with the comforting static of shortwave broadcasts. Tonight, however, it was silent. It was "bricked."
Elias had tried to flash a custom firmware build he found on an obscure radio forum. He wanted the promised "extended FM range" and the "hidden digital mode decoder." But halfway through the transfer, his laptop had forced an update, the USB connection severed, and the ATS-20’s screen turned into a blank, backlit void.
"Come on," Elias whispered, his breath fogging in the cold garage. He knew the risks of messing with the Arduino-based heart of the device, but the lure of a more efficient spectrum display was too strong. The ATS20 is not just a closed commercial
He spent hours scouring GitHub repositories. He found the original source code, but it felt like a retreat. Then, he stumbled upon a file named ATS20_V2_Ultimate_Final.bin posted by a user named 'IonSphere.' The notes claimed it optimized the gain stages for better SSB (Single Side Band) reception—exactly what he needed for long-distance communication.
With steady fingers, he jumpered the reset pins. He opened the flashing tool on his PC.
Here’s a short, interesting take on the ATS20 firmware — written in a style that’s part technical insight, part discovery log.