Released October 2008 / 2.4, 2.53, 2.66, 2.8 or 2.93 GHz Core 2 Duo Processor

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To upgrade to Sierra I need to upgrade WIFI card.

macbook pro 15" early 2008 2.5 core 2 duo 4 1

My Broadcom BCM4321 card type 0x14E4, 0x8C has compatibility issue.

http://dosdude1.com/sierrapatch.html

What would be an upgrade that would function with Sierra

I upgraded to 512 solid state HD and upgraded to 8G (6G recognized) Ram.

I think with WIFI card upgrade I should be able to upgrade to Sierra.

Answer this question I have this problem too

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How did you upgrade to Sierra on a 2008 machine?

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Apple has made it so that your machine will not upgraded by removing support for it.

Disappointedly for some the new macOS will run on less machines than its predecessors including OSX 10.11 El Capitan. Apple has dropped support for any models pre late 2009 for MacBook and iMac. And anything pre 2010 for MacBook Air, MacBook Pro, Mac Mini and Mac Pro.

You’ll still require a 64bit Intel processor, 8GBs of free disk space – if upgrading, as appose to clean install min plus at least 2GB of RAM.

The Macs that will run macOS Sierra

iMac – all models from late 2009, iMac 10,1 – 17,1

MacBook – all models from late 2009, MacBook 6,1 – 9,1

MacBook Pro – all models from 2010, MacBook Pro 7,1 – 11,5

MacBookAir – all models from 2010, MacBook Air 3,1 – 7,2

Mac Mini – all models from 2010, Mac Mini 4,1 – 7,1

Mac Pro – all models from 2010, Mac Pro 5,1 – 6,1

Which means most devices made prior to 2008 won’t be able to run it.

The ones that fall short…

– macOS Sierra won’t run on –

iMac 4,1 – 9,1

MacBook 1,1 – 5,1

MacBook Pro 1,1 – 5,2

MacBookAir 1,1 – 2,1

Mac Mini 1,1 – 3,1

Mac Pro 1,1 – 4,1

Xserve 1,1 – 3,1

UPDATE

Here's how I did it on a 2009 MacPro : EFI and Firmware update from 4,1 to 5,1 for Sierra Upgrade Solved

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I'm aware of the above. The reason Sierra won't run is because of the wifi card. The card I believe is upgradable allowing Sierra to run.

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I'm running Sierra on MacBook Pro early 2008 without using the wifi card.

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I believe I am running the same card:

AirPort Extreme (0x14E4, 0x8E)

Firmware Version: Broadcom BCM43xx 1.0 (5.106.98.100.24)

With Sierra

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Actually Sierra WILL run on the 2008 Mac Pro, but the standard wifi card will not work, but you can install a wifi dongle and it will all work.

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Also Sierra WILL run on the 15" Macbook Pro 5.1, but not on the smaller screen machine, as mine runs Sierra fine! So rather than follow the comments above blindly go and search "install Sierra on older machines"

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I have a Mac Pro 3.1 and as you have found the internal wifi module is not compatible with Sierra, so I use an Edimax EW-7833UAC USB dongle which works well.

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Would you post his you got it install on a 3,1 or did you do a firmware update?

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I am running Sierra successfully on a 2007 24" iMac (7,1) after upgrading the CPU from a T7700 to a T9500 (Penryn) and applying dosdude's Sierra patch. (If your 2008 already has a Penryn chip you don't need to do that part!) Also having the Broadcom wifi incompatibility problem, but I don't really need that on this machine. The unsupported wifi does not prevent Sierra from running. The system just doesn't see any wifi hardware. If I do someday want to replace the wifi hardware, does anyone know what model would work and has the right form factor for this machine?

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Apple MacBook A1342 Bluetooth Board Module 607-7153-a

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Sierra will run on that machine, just the standard wifi card will not work, you can replace the standard Broadcom card with a later card, or buy the upgrade that is sold on Amazon. If you do not want to start taking your Mac Pro apart have a search for a suitable wifi dongle, which is what I did.

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2011 imac

A1311

Wifi card works perfect

Use ch1 & ch2 connections

No messing job done ;)

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How does this answer the posters issue? Your's is a known compatible machine.

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J Liddle will be eternally grateful.
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