Raspberry Pi 2 WiFi with WEP Open System

Tried to get the wifi going with the GUI in Raspbian but it would not start working.

Ended up googeling and found this forum post on the Raspberrypi forum. that explained how to correctly setup the file for WEP with open system:

network={
    ssid="myssid"
    key_mgmt=NONE
    wep_key0=mywepkey
    wep_tx_keyidx=0
}

Found an blogpost explaining how to edit the file:

$ sudo nano /etc/wpa_supplicant/wpa_supplicant.conf 

changed myssid to the my wifi network ssid and changed the mywebkey to the correct key.

did a reboot

$ sudo reboot

and now it works!