Late 2008 MacBook Pros accepts 8GB RAM with correct Boot ROM

Discussion in 'MacBook Pro' started by MIDI_EVIL, Mar 6, 2011.

  1. MIDI_EVIL, Mar 6, 2011
    Last edited: Mar 9, 2011

    MIDI_EVIL macrumors 65816


    Jan 23, 2006

    9to5Mac reports that MacSales has discovered that with an EFI update, older MacBook Pro Unibodies can accept full 8GB of RAM. I'm delighted with this news. This is discussed in another thread, but I thought it would delight other older MBP owners hoping to get a bit more from their previously 'crippled to 4GB RAM machines'.

    How do you ensure your Late ‘08 MacBook/MacBook Pro can address 8GB of RAM?
    First, you want to make sure you have one of the affected models:

    MacBook 13.3″ 2.0GHz and 2.4GHz
    MacBook Pro 15″ 2.4GHz (All)
    MacBook Pro 15″ 2.53GHz model w/ExpressCard Slot (Late 2008)
    MacBook Pro 15″ 2.8GHz model w/ExpressCard Slot (Late 2008)
    Next, check the Boot ROM Version in your System Profiler.

    MacBook Pros with a Model ID of MacBookPro5,1 should have a Boot ROM Version of MBP51.007E.B05.
    MacBooks with a Model ID of MacBook5,1 should have a Boot ROM version of MB51.007D.B03
    Machines with other Model IDs are not affected and don’t need an update.


    Crucial UK sell this 8GB kit for £71.99.
  2. MIDI_EVIL thread starter macrumors 65816


    Jan 23, 2006
    I know it's a bit of a dead thread, but if it's any use to anyone... following the discovery by OWC, I've had 8GB of RAM in a 2.53 Core2Duo MacBook Pro for 1 week. It's running flawlessly.

  3. cjoy macrumors member

    Oct 24, 2008
    to revive this ol' thread...

    it says all 2.4 Ghz support 8GB with the right boot rom, yet in the title above it says "late 2008". What about the early 2008 MBP model with the 2.4Ghz Penryn?

    Can someone enlight me as to wether an upgrade to Snow Leopard and 8GB will work here?

    Model: MacBookPro4,1 - C2D Penryn 2.4 Ghz
    Boot-ROM: MBP41.00C1.B03

    thanks a bunch,
  4. Potatochobit macrumors regular

    Apr 2, 2011
    I believe yours would be MacBook Pro 15″ 2.4GHz (All)

    now, I'm not sure about your model exactly as i have yet to do this myself, but make sure your computer has DDR3 and you will need snow leopard
    if you don't really need to use the RAM you might also wait since the new OS is coming supposedly this summer
  5. Crimo macrumors newbie

    Apr 17, 2011
    Will this 8gb Apple kit work with my macbook pro 17 2.5 ghz intel core 2 duo?

    I have a 4 gb ddr2 sdram kit, but i see this one is ddr3 right? will it work? i need help im so noob in this =(
  6. Crimo, Apr 17, 2011
    Last edited: Apr 17, 2011

    Crimo macrumors newbie

    Apr 17, 2011
    I used MacTracker and it says i can put max 6gb RAM... is because im on leopard or is it a harware limit? Do you know the model of this ram so i can search for a good price on the web? thanks.

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