Shirkefi ESP32-S3: Failed to connect to ESP32-S3: No serial data received

I have recently purchased ShrikeFi ESP32-S3 board and am facing trouble using “Getting Started” example.

During “Upload LittleFS…” step, I am receiving following error:

esptool v5.2.0
Serial port /dev/cu.debug-console:
Connecting......................................

A fatal error occurred: Failed to connect to ESP32-S3: No serial data received.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html

ERROR:  Upload failed, error code: 2

While you get this connecting log, then just press the BOOT button on the board and hold it for 2 to 3 sec. it will going to detect the board.

1 Like

Hi @UpendraReddy, thank you for the solution.
I tried above method but when it failed, I changed to new USB-C cable. And device is now registered.

My laptop now recognises the device as:
Screenshot 2026-06-11 at 12.49.12 PM

Facing following issue now:

Uploading stub flasher...
Running stub flasher...
Traceback (most recent call last):
  File "esptool/__init__.py", line 1362, in _main
  File "esptool/__init__.py", line 1256, in main
  File "esptool/cli_util.py", line 346, in __call__
  File "rich_click/rich_command.py", line 402, in __call__
  File "click/core.py", line 1524, in __call__
  File "rich_click/rich_command.py", line 216, in main
  File "click/core.py", line 1912, in invoke
  File "click/core.py", line 1308, in invoke
  File "click/core.py", line 877, in invoke
  File "click/decorators.py", line 34, in new_func
  File "esptool/__init__.py", line 822, in write_flash_cli
  File "esptool/cmds.py", line 1776, in attach_flash
  File "esptool/cmds.py", line 1637, in _verify_flash_connection
  File "esptool/loader.py", line 1964, in read_spiflash_sfdp
  File "esptool/loader.py", line 1917, in run_spiflash_command
  File "esptool/loader.py", line 977, in read_reg
  File "esptool/loader.py", line 637, in check_command
  File "esptool/loader.py", line 567, in command
  File "esptool/loader.py", line 503, in read
StopIteration

A fatal error occurred: The chip stopped responding.
Stub flasher running.
Changing baud rate to 921600...
Changed.


Hard resetting via RTS pin...
Failed uploading: uploading error: exit status 2

Best,
Sanjay