Uninstall wireless and install wifi-qcom (the non "-ac" one).
Just did that before reading your post - and not it's fine!
Thanks mkx anyway!
Next time use GUI package upgrade mechanizm, it'll install the right packages.
Well, the reason i did a manual upgrade was that the gui does only allow you to upgrade version step by version step
and not skip ahead to tthe current version. Or is there a way?
And i didn't open the L009's case yet, but is it possible to upgrade a 5GHz ac oder ax variant with different hardware?