I have a Xiao ESP32-C3 that exhibits all of the same symptoms as this case here: [image] XIAO ESP32C3, unable to upload sketch or re-write bootloader XIAO I am having problems uploading sketches and need help. I can upload sketches to two XIAOs without any problem, but I …

The following steps may be helpful Is “USB JTAG/serial debug unit” listed under “Universal Serial Bus Devices” in the Device Manager? Note: not “Ports (COM & LPT)”. If not, this method does not work. If so, right click “USB JTAG/serial debug unit” and “Update Driver” select “Browse my computer fo…

Bricked Xiao ESP32-C3 can't flash new code or bootloader

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cgwaltney August 6, 2025, 11:47pm 10

FYI the TRMNL unit is a S3… in case that helps