Where do I find default .kext files? Specifically IONetworkingFamily.kext?

[Pngwyn]

So I was trying to find my mac address, so I followed these random steps, and installed a new IONetworkingFamily.kext without backing up the old one. So, yeah, I know that's now how you find out your Mac Address now.

More importantly, my internet doesn't work now, and I feel like it's because I need a new .kext. Now the only thing I can think of is reformatting, but I have a ton of stuff on my computer..

It's 10.5.5, late 2008 Macbook Pro. Anyone have any idea on how I can go about fixing it?

 

[Pngwyn]

Noone knows? Can someone with the same Macbook Pro 10.5.5 upload their .kext and PM it to me? I'm in such a bind.. I've looked everywhere and can't find a fix!

 

[MBPDiva]

Where did you get the new IONetworkingFamily.kext from? The old file should be on your disc that came with your macbook. Click this link https://forums.macrumors.com/threads/314488/