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Wifi and Brightness control not working - Sony VAIO

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Hi, I'm new to Mac OS X, I am a GNU/Linux user and programmer.


This is my pc:


Sony VAIO Fit 15E

intel core i5 i3337U 2.7 GHZ


nVidia G750M


I installed Yosemite and solved problems with Ethernet, battery indicator and everything works fine (already installed Xcode, etc).


But... I have two problems:


1. I can't manage to use the Wifi:

Broadcom BCM43142

Yosemite detects is as 07:00.0 Network controller: Broadcom Corporation Device 4365 (rev 01)


Anybody knows where to find a kext? Maybe a guide to install it properly?


2. I can't control the brightness of the screen and that's a little problem as it drains my battery and destroys my eyes. Tried googling but found some patches... really I don't know how to install it or go on.


Thank so much to anybody will help me!

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