@ajb2k3 Thank you soo much!
I turned off the VPN, and then it worked.

OS: MacOS 13.6.1
App: m5Burner Version 3.0.0 (3.0.0)
Product: M5 stack Core2 v1.1

When I click "Start" Button, showing the message:

Problem

OS: MacOS 13.6.3 (intel)
Application: M5Burner (latest version, on Aug 4)

The serial port cann't display in M5Burner application.

Steps taken

1. Tried different IDEs, but nothing worked.

2. Switched USB cables, yet COM port was still not visible.

3. Attempt to turn the USB lead upside down when plugging into the device without success.

4. I quickly press the boot button and Serial port was able to display, but soon disappeared. I seize the opportunity to click "erase" button, but it still didn't work and show the following error.

Error message:

Erase Flash
esptool.py v4.7-dev
Serial port /dev/tty.usbserial-58640309931

A fatal error occurred: Could not open /dev/tty.usbserial-58640309931, the port doesn't exist

Solution:

After removing the base and battery, I tried the 4th option and successfully erased the firmware!!!

Question:

What are the possible casues of the issuse?
How to burn the fireware correctly?
What steps should be avoid?

目前状态：无法开机，插上usb数据线 蓝色的灯会亮。

使用M5Burner 无法烧录。因为找不到COM，但是我按一下电源键，会显示找到usbserial-xxxxx 然后瞬间消失。

造成现状的原因：我使用vscode+platformIO烧录robo8080的项目，显示烧录成功，但是无法开机。

现在我该如何解决？有什么办法排查一下？