Broadcom HP530 wireless Linux Mint 17

$ sudo lspci -v
30:00.0 Network controller: Broadcom Corporation BCM4311 802.11a/b/g (rev 01)
        Subsystem: Hewlett-Packard Company Broadcom 802.11a/b/g WLAN
        Flags: bus master, fast devsel, latency 0, IRQ 18
        Memory at c8000000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: [40] Power Management version 2
        Capabilities: [58] MSI: Enable- Count=1/1 Maskable- 64bit-
        Capabilities: [d0] Express Legacy Endpoint, MSI 00
        Capabilities: [100] Advanced Error Reporting
        Capabilities: [13c] Virtual Channel
        Kernel driver in use: b43-pci-bridge
        Kernel modules: ssb
$ sudo lspci -nn
30:00.0 Network controller [0280]: Broadcom Corporation BCM4311 802.11a/b/g [14e4:4312] (rev 01)
My solution
$ sudo apt-get remove --purge bcmwl-kernel-source
$ sudo apt-get install linux-firmware-nonfree
reboot
$ sudo modprobe b43
$ sudo su
# echo "b43" >> /etc/modules
   => NOK
$ sudo apt-get install firmware-b43-installer
$ sudo reboot
  => OK (press the wireless button during restart mint)
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