Can't flash Daisy Pod on MacBook Pro M4 Pro / macOS Tahoe

Troubleshooting and Support
1

Hi all

First time with Daisy, plenty of experience with Arduino and ESP32. Can’t get the Seed to enter DFU mode or be recognized by my Mac.

Setup:

  • Daisy Pod (incl. Daisy Seed 65MB)

  • MacBook Pro M4 Pro, macOS Tahoe 26.3.1 (beta)

What I’ve tried:

  • Multiple confirmed data cables, different USB ports, direct dongle (no hub)

  • BOOT + RESET sequence repeatedly — LED behavior doesn’t change

  • dfu-util --list — nothing

  • system_profiler SPUSBDataType and ioreg -p IOUSB — nothing

  • Web Programmer in Chrome and Firefox — “no compatible device found”

  • arm64 Homebrew dfu-util, STM32CubeProgrammer in PATH

One clue: plugging in the Seed briefly triggers a macOS “approve USB accessory” popup that disappears before I can click it. Daisy never appears in System Report → USB.

Is this a known Tahoe issue? Any M4 Pro workarounds?

Thanks

2

Web Programmer works on 26.3.1 for me, MacBook Air M1, using Chrome. Other programming methods (C++ command line, VSC, PlugData) work too.

Note: BOOT and RESET buttons won’t necessarily change what’s on the LEDs. In DFU mode, POWER LED is ON, and USER LED is OFF. If Seed is already running a program which leaves the USER LED OFF, then entering DFU mode looks just the same.

So, just to be clear. To enter DFU mode:

  • press and HOLD BOOT button,
  • press RESET BUTTON
  • RELEASE both buttons.