Firmware not available

Hi,

I’ve been trying to get WiFi to work on a HassOS install on an RPi2, but every time i connect the WiFi dongle i get these messages:

r8188eu 1-1.2:1.0: Direct firmware load for rtlwifi/rtl8188eufw.bin failed with error -2
r8188eu 1-1.2:1.0: Firmware rtlwifi/rtl8188eufw.bin not available

I found the corresponding firmware online, but i have no idea how to add it to the HassOS install, any help?