Before I try the kexts, I found that sometimes this usb-bluetooth disconnects after sleep.
First set of kexts works! (No luck on Fn keys though)
The ones which fail to work:
Fn+F2 = WLAN/BT killswitch (doesn't matter)
Fn+F3 = switch/swap displays, no idea if theres any equal function on mac - Pressing this freezes mac at the moment!
Fn+F6 = Sound mute
Fn+F7 = Volume down
Fn+F8 = Volume up
Fn+F9 = Play/Pause
Fn+F10 = Stop
Fn+F11 = Previous in playlist
Fn+F12 = Next in playlist
Fn+Ins = Prt Sc
Fn+Num lk = Scr Lk (I believe it functions as apple brightness up but it is always at maximum, however it displays the icon in the middle of screen)
Fn+Del = SysRq
Also there are two keys which are swapped for some reason under osx.
The layout we use here: http://upload.wikime...KB_Estonian.svg
The key between shift and z is swapped with the key to the left from 1. On windows and with other keyboards it functions properly.