Firmware ((new)) | Ats20

You likely need the CH340 or CH341 USB-to-UART driver for your computer to recognize the device. Software Tools:

Unlocking Potential: A Guide to Firmware Upgrades and its successor, the ats20 firmware

ATS 20+ : ATS_EX Firmware... adding the battery level circuit. You likely need the CH340 or CH341 USB-to-UART

For casual broadcast listening (AM), the stock firmware is adequate. But for amateur radio operators hunting Morse code (CW) or voice (SSB), an upgrade is often necessary. ats20 firmware

Custom firmware solves these problems by rewriting the control logic of the Si4732 chip.