Hellow fellows! Firstly I would like to thank to
binarylife for partial solution of my problem.
How I resolved the problem:
sudo apt-get --purge remove firmware-b43-installer
sudo apt-get --purge remove dkms
sudo apt-get --purge remove bcmwl-kernel-source
sudo apt-get install bcmwl-kernel-source
sudo reboot
As you can see I had to remove firmware-b43-installer firstly. Without that I couldn't remove dkms and bcmwl-kernel-source (it returned error). Anyway, my wireless now works thanks to binarylife.

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