Easy Install (deprecated)
esphome-flasher has been deprecated, the project has been archived since July 2023.
Please see the even simpler install method here.
This guide is for users that just want to make it work.
Please be aware, esphome-flasher will wipe any and all settings from the M5StickC each time it is programmed.
This means that all settings and Bluetooth pairings will need to be reset and repeated when you flash the M5StickC with new firmware.
Go here https://github.com/esphome/esphome-flasher/releases and download the latest release (1.4.0 at time of writing).
Go here https://github.com/gkoh/furble/releases and download the latest release for your device (v1.0.0 at time of writing).
Run the esphome-flasher application previously downloaded, it should look like this:
Plug the M5StickC into your computer with the right cable, hit the refresh button and it should appear in the Serial port drop down list (here it is COM4):
Hit Browse and select the furble firmware previously downloaded, like thus:
Now click Flash ESP and it should start detecting, erasing and writing:
Success is usually indicated with "Done! Flashing is complete!":
You may now disconnect the M5StickC and use it.