we're working on heat management so hopefully it won't happen again. thanks for your time.

thanks for the feedback. i use FFat.h to store PNG files and Preferences.h for some config parameters but not continuously, only based on user interaction.
it might have to do with overheating then, the ambient temperature inside my enclosure can sometimes go over the 65degC (due to other ...

hi, yes i tried with GPIO0 LOW and then upload, same problem:
from Arduino IDE

esptool v5.1.0
Serial port /dev/ttyACM0:
Connecting...
A fatal error occurred: No serial data received.

Connected to ESP32-S3 on /dev/ttyACM0:
Chip type: ESP32-S3 (QFN56) (revision v0.2)
Features: Wi-Fi, BT 5 (LE ...

Hi,
I have a custom PCB with a ESP32-S3-WROOM-1U module (N8R8), and i have dozens of devices in use for over a year without problem. A few are failing, with an unresponsive ESP32. I connect via native USB (also used to upload initial firmware, without problem).
On the serial port i get:
invalid ...

Hi, i've been working on an LED matrix application with an ESP32-WROVER module:

I use a hw_timer_t to run an IRAM_ATTR ISR every 10us to update the matrix shift register,
and have a TCP server (WiFiServer) to receive instructions, checking for new clients in the loop().

This all worked well ...