How do I upgrade my wireless software on my Macbook Pro?

I asked this question a few days ago and got some great responses.

Now my problem may be with my wireless hardware/software on my Macbook Pro?  I'm not really sure where to start or what to check.  I have an airport extreme router and there are no issues or dropped connections, but how do I know if my card is up to date?

Macbook Pro (15-inch, Mid 2012)
2.3GHz Intel Core i7
16GB 1600 MHz DDR3
LVL 19
Kyle SantosQuality AssuranceAsked:
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Just check for updates and if you have not the latest driver/firmware, they will be installed. When your computer is up-to-date, you can be sure for 2 things:

1. You have the latest available version for every software installed on your computer which is related with your computer components

2. You have the latest version of every software installed from AppStore.

Best regards!
Kyle SantosQuality AssuranceAuthor Commented:
Apple made it that easy huh?  (former Windows user here so I'm still skeptical in regards to things like this.)  I guess I just need the re-assurance haha.
Eoin OSullivanConsultantCommented:
Just to confirm. Apple DOES NOT issue separate updates for different components of hardware.
If you're running the very latest version of OSX that can be installed on your device then you can be sure that the firmware for all the components are also included.
As Apple manufactures all the hardware .. it has a relatively small number of components to support and so can cover all updates in the OSX updates itself.  Periodically they may discover a particular issue with a certain laptop or desktop and may issue a specific update but the OSX Software Update process will check your Mac against such a list and will always present any applicable updates.
As Microsoft do not manufacture PCs .. the sheer number of components makes inclusion in core Windows installer impossible and necessitates users checking against several sources for hardware updates.

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Kyle SantosQuality AssuranceAuthor Commented:
I did not know Apple made their own components.

Thank you for your comments!
I wish to add the comment that starting with windows 7 and windows 2008 server, windows updates has a dedicated section "hardware updates".

Also, for some printers/scaners/faxes or other usb or network devices, it is better sometime to search for the latest MacOS driver on the producer site.

All the best!
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