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Firmware installer

This page writes a new firmware image to an ATS Mini over its USB cable, without installing anything. It checks the archive you supply against the hardware variant the chip reports, because the two builds are not interchangeable and nothing inside the images themselves says which is which.

No warranty

Flashing writes directly to the radio's flash memory. An interrupted write, or an image built for different hardware, can leave the receiver unable to start, and getting it back may need a serial console and a manual recovery flash. You do this entirely at your own risk. This site gives no warranty of any kind and takes no responsibility for a damaged or unusable device.

Credits and licences

The flashing itself is done by esptool-js, Espressif Systems' own browser flasher, used here under the Apache-2.0 licence.

The firmware images come from the ATS Mini firmware project and are published under the MIT licence.

Neither Espressif Systems nor the ATS Mini firmware project is affiliated with this site, and neither endorses it.

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Welcome to ATS Mini Controller

This web app connects to your ATS Mini radio over USB or Bluetooth LE and lets you control it directly from a computer or phone. It adds remote tuning, memory slot management, screenshot capture, audio streaming, spectrum scanning, theme editing and other features on top of the device's built-in firmware.

Firmware 2.34+: pick a connection method

Starting with firmware 2.34 the radio accepts remote control over USB or Bluetooth LE. Pick by what matters more for you: fast screenshots (USB) or clean audio from the radio’s 3.5 mm output (Bluetooth) — the two transports trade off in opposite directions.

  • USB Serial

    Settings USB Port change Off to Ad hoc

    Works in any Chromium-based browser. Requires a data-capable USB-C cable (opens in a new tab).

    Best for screenshots and theme work. Transfers complete in a second or two. Audio capture is noisy while the cable is connected — the radio lacks the filtering needed to isolate its 3.5 mm output from the USB power rail, so hum and switching noise bleed into the audio path.

  • Bluetooth LE

    Settings Bluetooth set mode to Ad hoc

    Chrome / Edge / Opera on desktop or Android. BLE is experimental in firmware 2.34.

    Best for clean audio. Bluetooth LE carries the remote control only, never sound: the audio still travels by cable from the radio’s 3.5 mm output to your computer. With no USB cable attached the radio runs on its battery, so that output stays free of the USB power-rail noise that bleeds through on a wired connection. Screenshots are much slower (~30 s) because of the firmware's BLE throughput cap.

More than one firmware

Besides the official firmware, the app carries profiles for the Monster fork and for H. J. Berndt's firmware. It works out which one your radio runs from the replies it gets, so there is nothing to pick. When nothing matches, it says so instead of guessing.

  • Berndt firmware is never assumed. It reuses some of the official firmware's keys and what they do there is not established, so the app asks you before switching to it.
  • Missing controls are deliberate. Whatever a firmware cannot do is left off the page rather than greyed out, and on Berndt firmware, commands go out one at a time, a few seconds apart.
How the app handles other firmwares (opens in a new tab)
Guides & gear (opens in a new tab)Firmware on GitHub (opens in a new tab)

Keyboard shortcuts

Single keys control the radio on the Controller page, except while you type in a field.

←→
Tune one step
↑↓
Volume up / down
Enter
OK
BN
Next / previous band
MV
Next / previous mode
SA
Next / previous step
WQ
Next / previous bandwidth
GF
AGC up / down
LK
Backlight up / down
IU
Calibration up / down
OP
Sleep on / off
T
Toggle status log
C
Screenshot
H
Log reception
D
Cockpit view
⌘K
Search pages & stations