Requires:

a microbit and its usb cable
a computer that has usb

Steps:

with the computer
- download the zip file and unzip it
- attach the microbit using its usb cable
- the microbit will present itself as a mass storage device
- copy main.hex to the microbit

Operation:

connect the microbit to the computer using the usb cable
the microbit will present itself as a serial device
use minicom or another terminal program to connent to the microbit
you should observe log messages indicating the reception of ble advertisment packets