Uploading issue

[netdudeuk]

Hi

I ordered your latest board thanks. All soldering looks ok but even with the board not plugged into the matrix, I get the following error message when using the Arduino IDE -

_Sketch uses 264501 bytes (20%) of program storage space. Maximum is 1310720 bytes.
Global variables use 21952 bytes (6%) of dynamic memory, leaving 305728 bytes for local variables. Maximum is 327680 bytes.
esptool.py v4.5.1
Serial port COM9
Connecting.....................................An error occurred while uploading the sketch
.

A fatal error occurred: Failed to connect to ESP32: Download mode successfully detected, but getting no sync reply: The serial TX path seems to be down.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html_

I don't get this issue if I move the USB cable into a new ESP32-WROOM32 board.

I just have the USB cable connected. Am I using the board correctly ?

Any ideas please ?

Thanks

[netdudeuk]

I've found that I get a different error message when attempting to flash when the PCB is unplugged from the panel -

A fatal error occurred: Failed to connect to ESP32: Wrong boot mode detected (0xb)! The chip needs to be in download mode.
For troubleshooting steps visit: https://docs.espressif.com/projects/esptool/en/latest/troubleshooting.html

Pressing the reset button sends this to the serial terminal -

_ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x1b (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:1
load:0x3fff0030,len:1344
load:0x40078000,len:13964
load:0x40080400,len:3600
entry 0x400805f0_

Nothing appears in the serial terminal if the PCB is plugged into the panel.

The small blue LED flickers while plugged into the panel or not.