My arduino nano esp32 doesn't boot

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1

Hi.

I just got my Arduino nano esp32 (s3) and i wanted to use the SPI. However, I only realized that the Pins 8, 9, 10 (which are bootstrap pins) being used by SPI would brick my s3 by going into a boot reset loop. So I put the s3 into firmware mode and uploaded the old firmware (before i added SPI) via esptool and now I am really f*cked.

I used this command:

python -m esptool --chip esp32s3 --port COM9 --baud 115200 write-flash -z 0x0 firmware.bin

Now, the s3 JTAG only shows up briefly in my device manager and i hear the usb disconnecting sound every 3 seconds or so.

I then made a UART bridge with a wroom-32:

#include <Arduino.h>

void setup() {
    Serial.begin(115200);
    Serial1.begin(115200, SERIAL_8N1, 16, 17);
}

void loop() {
    if (Serial.available()) Serial1.write(Serial.read());
    if (Serial1.available()) Serial.write(Serial1.read());
}

and i get this message repeated over the uart:

ESP-ROM:esp32s3-20210327
Build:Mar 27 2021
rst:0x7 (TG0WDT_SYS_RST),boot:0x8 (SPI_FAST_FLASH_BOOT)
Saved PC:0x40378aa1
SPIWP:0xee
mode:DIO, clock div:1
load:0x3c030020,len:0xd720
load:0x3fc91a40,len:0x28d0
load:0x42000020,len:0x29038
load:0x3fc94310,len:0xdb0
load:0x40374000,len:0xda40
SHA-256 comparison failed:
Calculated: dd17fa2b742e558d04097f30b7f6c95309ec45f65a074f104faf4eeb8795aca3
Expected: fd0b0d360266ff9d2aea5d36f9d94dbb91c552e0f650f2e44c739ca9f7765b19
Attempting to boot anyway...
entry 0x40376920

Please somebody who maybe knows how to fix this help me.

Thanks

2

Just use the recovery pin of the Arduino Nano ESP32 to boot it into bootloader mode and then upload a new firmware? This prevents it from running your firmware.

https://support.arduino.cc/hc/en-us/articles/9810414060188-Reset-the-Arduino-bootloader-on-the-Nano-ESP32

3

Thank you so much!

I really need to start to google things again instead of asking gpt.