Later edit - erased duplicated post

You're good man, this worked like magic from the LiveCD. I had my Chipset unknown but you already posted the answer to that. I did try to run it but it seams that aireplay won't work: it seems that...

Is this update work only with hard drive BT4 installation or is it wotking with LiveCD distributions as well? because after rebooting you probably lose the saved data

I have the same adapter. Did you use BT4 from Live Cd or you have it installed on your hard drive? It seams to be that if you edit the firmware like the tutorial you sugested, at the reboot you will...