And…. magically, after a while the WiFi appeared. I did nothing, just a few desperate reboots (F7 boot menu, enetering bios, trying to boot from USB to see if it works and so on). I have no idea why it disappeared as a device and then it appeared…
Had my Tbook 11 updated and WiFi dissapeared. My bet is that since it’s a USB device some deepsleep causes the USB to go off and thus the WiFi is not detected anymore or something like this but… I have no way to fix it or test this asumption. A WiFi dongle over USB works… but I want my internal WiFi back!