1. How to upgrade arduinoIDE to the latest version 2.1.1
1.1. Upgrade directly through IDE2.x (recommended, the speed is OK)
1.2. Download the installation package from the official website to overwrite the upgrade (address https://www.arduino.cc/en/software)
1.3 The upgrade method of ESP8266 is similar for reference (the principle is the same, The latest seems to be 3.1.2)
https://github.com/esp8266/Arduino/releases
https://github.com/espressif/arduino-esp32/releases
2. Upgrade the development board (esp32 2.0.3 to 2.0.10)
First, explain the directory of arduino:
1) The installation directory can directly overwrite the installation, such as D:\Program Files\Arduino IDE
2) The default package file address is C:\Users* Administrator *\AppData\Local\Arduino15
3) About the package file directory structure
About the packages directory (development board eps32 and esp8266)
…/packages/esp32/har