Browse to balena.io and download their latest version
After successfully downloading the balena etcher, install...
Simply agree to the terms to start the installation
Wait for the installation to finish
Once installation is done. Open the balena etcher software if its not running yet. Browse for the iWiFI image that you downloaded, plug your sdcard reader with the sdcard in it on any available USB port on your PC. then press the FLASH button. wait for the flashing to complete then you are done. You may now insert the SDCard to your Raspberry pi.