Press the black knob to the right of the screen on the Prusa printer
Navigate to the "Unload Filament" option
Click on "Unload Filament" and select PLA - 215 (Depends on the filament, always check the filament spool before setting the temperature)
Wait for nozzle to heat to appropriate temperature
Wait for screen to read "Press the knob to unload filament" and then press the black knob
Wait until the screen reads "Remove filament immediately"
When it does carefully pull the filament out
Wind the loose filament on the roller tightly so the filament doesn't get tangled
Poke the end of the loose filament through one of the holes on the side of the spool
Press the black knob to the right of the screen on the Prusa printer
Navigate to "Autoload Filament" and click on it
A selection screen will appear saying the filament is ready to be inserted, click the black knob
Select PLA - 215 (Depends on the filament, always check the filament spool before setting the temperature)
When the nozzle reaches the appropriate temperature, insert the loose filament into feeding hole at the top of the nozzle
Click the black knob again to begin feeding filament
The nozzle will print a line of the filament and ask if it is the desired color, if it is click yes
**Note: if you unload and load filament in quick succession, it might skip the nozzle heating stage!