ESP32 Forum

Posted: **Tue Jan 09, 2024 1:53 am**

Hello,

I'm trying to program a custom ESP32-WROVER-E using a ESP-PROG, and I'm receiving this issue when programming:

Connecting......................................

A fatal error occurred: Failed to connect to ESP32: Wrong boot mode detected (0x12)! The chip needs to be in download mode.
For troubleshooting steps visit: https://github.com/espressif/esptool#troubleshooting
CMake Error at run_serial_tool.cmake:56 (message):

  C:/Users/joe.fang/Desktop/esp-idf-44/python_env/idf4.4_py3.8_env/Scripts/python.exe
  C:/Espressif/frameworks/esp-idf-v4.4/components/esptool_py/esptool/esptool.py
  --chip esp32 failed

when I monitor the board, I receive:

Code: Select all

rst:0x10 (RTCWDT_RTC_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fffeba4,len:4
load:0x4009f000,len:3248
entry 0x4009f574
�OHAI�ets Jul 29 2019 12:21:46

rst:0x10 (RTCWDT_RTC_RESET),boot:0x12 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fffeba4,len:4
load:0x4009f000,len:3248
entry 0x4009f574
�OHAI�

Any suggestions would be greatly appreciated!

Posted: **Tue Jan 09, 2024 9:29 am**

Check your bootstrap pins. At the very least, GPIO0 should be low. Could be that you need to look at the ESP-PROG jumpers if that is connected to GPIO0.

Posted: **Tue Jan 09, 2024 10:34 am**

Cross-referencing https://github.com/espressif/esptool/issues/945

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