I've got a problem with my WiFi: since today my laptop (l502x) is set automatically in airplane-mode. If I uncheck the checkmark for airplane-mode, it will go back to airplane-mode automatically. Because of this I can't connect to my WiFi.
I've tried 'sudo rfkill unblock all', but that won't work.
On the internet they also suggested a BIOS-upgrade, but I don't know how to do that because I have removed windows and the file for a bios-upgrade is a .exe.
In the attachment is a picture of the output of 'sudo rfkill list'