For those who already updated, see here viewtopic.php?f=28&t=206083#p1279059 (I've tested, works)
and here viewtopic.php?f=28&t=206083#p1279262 (official solution, not tested) to get older Wifi driver that works.
Sorry, I've added another storage location. Sadly the file is too big for an attachment here in the forum https://workupload.com/file/2wjUFnk(When I tried to get the firmware from share-online.biz, a pop-up appeared stating that I had won an IPhone. This website is now on my blacklist.)