Wiznet WizFi360-CON Getting Started page 51

#Software
Arduino IDE
important
For this guide hourly build of Arduino IDE was used. Arduino IDE version was "LAST UPDATE 25 March 2020 23:34:57 GMT" at the moment of this guide
creation.
#Instructions
1. Open Preferences in Arduino IDE.
2. In preferences window set compiler warnings to "All". Also check all items except "Use external editor".
Add http://wizwiki.net/download/WizFi360/arduino/package_WizFi360_index.json
3. Open board manager from Tools menu.
to board manager URL.