esptool.py erase all flash before writing (single command)

https://github.com/espressif/esptool/releases/tag/v2.6
Version 2.6 - Features
New write_flash --erase-all ... option to erase all flash before writing (single command).
Open Community Forum for ESP8266, Come share Arduino and IoT (Internet of Things)
https://www.esp8266.com/
https://github.com/espressif/esptool/releases/tag/v2.6
Version 2.6 - Features
New write_flash --erase-all ... option to erase all flash before writing (single command).