Latest stable release available from PyPi:
https://pypi.python.org/pypi/esptool/
This release:
https://pypi.python.org/pypi/esptool/2.2.1
New since v2.2
- Fix an issue seen on macOS with high baud rates (>230400). pyserial was sending configuration to the serial port (no settings were actually changing) while a response may have been coming from the device, and this caused read data to be lost at or below the OS layer.
- Fix use of esptool with remote network serial ports (see here in README).
- write_flash now warns instead of crashing if a file is empty (zero length).