I know that about dmesg. Wouldn't the kernel find a wireless interface at boot and name it wlan, like I mentiona above? Why is it not in dmesg then? I will keep searching, athough I do not know how much longer I can keep that installation.
Also, I noticed that wl is used for it, like in le 10 and 9. How can I blacklist it and test b43 that also supports it?
In other news, one thing I managed to test on x64 le 11 was video playback on my old laptop. One of the reasons I have not yet moved to le 10 there is because I get frame drops on every video (file or stream), regardless of resolution.
The stream/file plays fine, the cpu usage is at normal levels, but the motion is not as smooth as in le 9. It seems as if it skips some frames and it happens even on low resolutions like 360p. So, I discovered that it does not happen on le 11 and I am pleased 
---edit
Well, this happened on the first boot of today's nightly. It is on dmesg and it seems serious.
[ 206.501651] netdevice: wlan0: Incorrect netdev->dev_addr
---reedit
I just found the way to blacklist a module.
https://wiki.libreelec.tv/how-to/blacklist-kernel-module
But there is no b43!
# modinfo b43
modinfo: ERROR: Module b43 not found.