Well I guess it might interest some people here too, I tried upgrading from the 2230N to a 6300N, which worked flawlessly, too.
Unfortunately, I had to remove the Wireless Card first and then upgrade and put it back in but that was worth the try. Now I have 5Ghz Wifi, much more reliable and stable than ever before.
Thanks!
EDIT: What I forgot. If you disable the Wifi in BIOS, you can upgrade the BIOS without removing the already built in 3rd party card. Then just re-enable after upgrading to the modded bios and you're fine