Product : TTGO CAN-485
Version:v1.1
Platform: Arduino 2.0.4 / Modbus Maste 2.0.1
Severity: High
Description:
After successful compilation, Arduino is unable to flash the esp32 :

Sketch uses 968985 bytes (73%) of program storage space. Maximum is 1310720 bytes.
Global variables use 51432 bytes (15%) of dynamic memory, leaving 276248 bytes for local variables. Maximum is 327680 bytes.
esptool.py v4.5.1
Serial port /dev/cu.usbmodem54F40127791
Connecting....
Chip is ESP32-D0WDQ6-V3 (revision v3.0)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 4c:eb:d6:43:58:80
Uploading stub...

A fatal error occurred: Failed to write to target RAM (result was 01070000: Operation timed out)
Failed uploading: uploading error: exit status 2

Steps to Reproduce:

1. Click compile and upload

Expected Result:
The new firmware should be flashed into the esp32

Actual Result:
The firmware is unchanged and then useless.

Additional Information:

• I tried two different boards, I got the same result
• I tried with two different USB cables, I got the same result
• I tried holding reset and bot, bot only, reset only, bot hold and quick push on reset, I got the same result
• Reboot board and computer

Do you have some ideas for me ?

I didn't found on the official github repo the role of BOT button.

Thanks

Best