6.41.1, I am not sure why the other is not working, it should since we are reflashing the firmware. Is the TFTBOOT procedure different?
Nope? It is the same. But we extract the firmware from 6.43 ... I have no idea what is wrong. 
Did you used the image from the link I sent you? That one has a custom firmware that "should" work. What we extracted from 6.43.X is the brd file (which is basically the antenna configuration) so that should not be an issue. Try this file: https://github.com/IMDEANetworksWNG/Mikrotik-researcher-tools/blob/master/files/lib/firmware/wil6210.fw
I checked out your repository and compiled it. So I'm already using the firmware that is in this link?
Oh that is bad news! We need this research tool to work on the newer models as well. So the image loads correctly but you cannot start a hostapd on the newer versions? What does dmesg | tail output when you do ifconfig wlan0 up?
I will get a bootlog from those devices and see if there is something different.
Would be nice to have the seed from those ROS version to decrypt the boardfile.
Great, that would be amazing.
Hello, colleagues.
I made some reverse independently and didn't know about your discussion.
Here is my result.
Cuold you please check if it works?
Sorry, I forgot to attach a link.
https://drive.google.com/file/d/1SrCffExhh1wpUbloNazNWtCukhrm9X6V/view?usp=drivesdk
Also I have some more board files here.
https://drive.google.com/drive/folders/1P7KW7csyD283Tt7ZspXufZ4IAKnDFAqw
Thanks! 
From which ROS version? Did u test them yourself? For me the one you linked is missing a header.
These files are from latest 6.47beta19.
But hash sums are identical for previous releases.
I plan to test it later, but looks like files are normal.
Also I noticed that mikrotik wireless driver patch some board files on-the-fly.
So we should (probably) take a closer look.
How are u debugging that?
With Ghidra =)
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You mean, the firmware of the chip is patching the boardfile, or? Not the driver running in kernel space?
I mean a "wireless" driver which mikrotik provide inside their firmware.
You mean you look at the kernel module wil6210.ko? Then I will start looking at this too.
No, I mean /lib/modules/3.3.5/misc/wlan.ko
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