If M5Burner doesn't work on your new Mac (especially with macOS 15.x or Apple Silicon M4/M3), and it crashes on startup or doesn't load any firmware, here's how to fix it manually.

🔄 Symptom

M5Burner launches but shows errors like invalid signature: 0x54454d3c

Missing folders like firmware/ or dat/ inside the app

JavaScript or unzipper errors in Terminal

🔧 Manual Fix Steps

Download M5Burner (latest version)From the official site:https://m5stack.com/pages/download

Fix permissions (required for macOS Gatekeeper)

xattr -c /Applications/M5Burner.app

Download the manual patch (missing folders)GitHub repo:https://github.com/neusmstack/M5Burner_patch

Or direct download of the ZIP file:https://github.com/neusmstack/M5Burner_patch/raw/main/M5Burner_patch_files.zip

Unzip the file and copy the firmware/ and dat/ folders into this path:

/Applications/M5Burner.app/Contents/Resources/packages/

Launch M5Burner again and everything should work fine:

Firmware list will appear

You can burn and configure devices

🇪🇸 INSTRUCCIONES EN ESPAÑOL

Si M5Burner no funciona correctamente en tu nuevo Mac (especialmente con macOS 15.x o Apple Silicon M4/M3), y se bloquea al arrancar o no carga firmwares, aquí tienes la solución manual.

🔄 Síntomas

M5Burner se inicia pero da errores como invalid signature: 0x54454d3c

No aparecen las carpetas firmware/ o dat/ en la app

Aparecen errores JavaScript en el Terminal

🔧 Pasos para arreglarlo manualmente

Descarga la última versión de M5BurnerDesde la web oficial:https://m5stack.com/pages/download

Corrige los permisos de seguridad (Gatekeeper)

xattr -c /Applications/M5Burner.app

Descarga el parche manual (carpetas faltantes)Repositorio GitHub:https://github.com/neusmstack/M5Burner_patch

O descarga directa del archivo ZIP:https://github.com/neusmstack/M5Burner_patch/raw/main/M5Burner_patch_files.zip

Descomprime el archivo y copia las carpetas firmware/ y dat/ dentro de esta ruta:

/Applications/M5Burner.app/Contents/Resources/packages/

Vuelve a abrir M5Burner y todo debería funcionar correctamente:

Aparece la lista de firmware

Puedes grabar y configurar tus dispositivos

If this worked for you, please leave a like or comment in the forum to help others! 😊Si esto te funcionó, deja un like o comentario en el foro para ayudar a otros. 😊

the result will contain:

HTH

GUI b
DELAY 1000
STRING 1111
STRING 2222
STRING 3333
STRING 4444
STRING 5555
STRING 6666
STRING 7777
STRING 8888
STRING 9999
STRING 0000
STRING 0123
STRING 0124
STRING 0125

но есть проблема, устройство блокируется. Можем ли мы решить эту проблему и как.
Прошивка - bruce
Устройство M5 Stick Plus2

[{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "invalid use of incomplete type 'const struct tm'",
"startLineNumber": 33,
"startColumn": 25,
"endLineNumber": 33,
"endColumn": 25
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "invalid use of incomplete type 'const struct tm'",
"startLineNumber": 34,
"startColumn": 25,
"endLineNumber": 34,
"endColumn": 25
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "invalid use of incomplete type 'const struct tm'",
"startLineNumber": 35,
"startColumn": 25,
"endLineNumber": 35,
"endColumn": 25
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "cannot convert '<brace-enclosed initializer list>' to 'int8_t' {aka 'signed char'} in initialization",
"startLineNumber": 35,
"startColumn": 35,
"endLineNumber": 35,
"endColumn": 35
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "invalid use of incomplete type 'const struct tm'",
"startLineNumber": 61,
"startColumn": 27,
"endLineNumber": 61,
"endColumn": 27
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "invalid use of incomplete type 'const struct tm'",
"startLineNumber": 62,
"startColumn": 27,
"endLineNumber": 62,
"endColumn": 27
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "invalid use of incomplete type 'const struct tm'",
"startLineNumber": 63,
"startColumn": 27,
"endLineNumber": 63,
"endColumn": 27
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "invalid use of incomplete type 'const struct tm'",
"startLineNumber": 64,
"startColumn": 27,
"endLineNumber": 64,
"endColumn": 27
},{
"resource": "/c:/Users/CZECH/Documents/PlatformIO/Projects/FluidDial-main/.pio/libdeps/m5dial/M5Unified/src/utility/RTC8563_Class.hpp",
"owner": "cpp",
"severity": 8,
"message": "cannot convert '<brace-enclosed initializer list>' to 'int8_t' {aka 'signed char'} in initialization",
"startLineNumber": 64,
"startColumn": 45,
"endLineNumber": 64,
"endColumn": 45
}]

I eventually found that if I have the Cardputer turned off and hold the Go button down while connecting the USB cable, I was able to successfully upload apps with M5Burner.

I don't know if I have any legacy drivers installed for other microcontroller work I've done, but I didn't have to install any new drivers to get this working. I did find that following the instructions on the UIFlow 2.0 Quick Start page:

"After the Device is turned on, press and hold down the G0 key, insert the USB port, enter the download mode, after connecting, the software will pop up Found New Device."

...didn't work for me, with the only difference apparently that I had my Cardputer turned off when plugging in the USB cable while holding the Go button.

Also, of course, make sure your USB cable is a data cable, not just a power cable.

A fatal error occurred: Failed to connect to Espressif device: No serial data received.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html

please help