Did you have to load the bootloader on the ESP32-S3-WROOM-1 before you could program over serial?
I'm getting;
A fatal error occurred: Failed to connect to ESP32-S3: Wrong boot mode detected (0x14)! The chip needs to be in download mode.
Ahh dang, I just noticed this gem from the ESP32-S3 datasheet;
GPIO46 must also be either left unconnected/floating, or driven Low, in order to enter the serial bootloader.
And of course I picked GPIO46 for I2C SDA, so it's pulled high.
https://github.com/skot/bitaxe/issues/18