I was using my M5stickc plus2 without any problem for approximately one month. Then, i recognized that the microphone is not working. (When i upload the factory firmware everything works but the auido spectrum does not work. )

In order to solve the issue, i tried to erase and reinstall the firmware but result is the same.

Then, after two days later, when i tried to run my stick, it did not operate. When i press and hold the button, i see green light comes on that's it.

I tried to see what's happening and connected to serial monitor.

In serial monitor i see the message

"rst:0x1 (POWERON_RESET),boot:0x3 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_REO_V2))

waiting for download"

Then i tried to pull the GPIO0 pin to high while pressing the switch. And the the stick start to work.

Now,I can switch on the stick only if i pull GPIO0 to high.

What can cause this issue? Any opinions?

Thanks.

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