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i want to upgrade my ram from 4 to 8gb.

993 Views 4 Replies Latest reply: Apr 30, 2012 1:55 PM by NeonNocturne RSS
corfromrotterdam Calculating status...
Currently Being Moderated
Jun 10, 2011 9:01 PM

i want to upgrade from 4gb ram to 8gb on my mac mini early 2009.

For this i need the update 2.1 but it won't let me.

than they told me if i have the boot rom MM31.0081.B06 than i don,t need to,but i have MM31.00AD.B00.

How to change this,or is this okay?

Mac mini, Mac OS X (10.6.7), 4 gb ram Runcore ssd 64gb
  • ekokkoris Level 1 Level 1 (0 points)
    Currently Being Moderated
    Sep 13, 2011 11:48 PM (in response to corfromrotterdam)

    Bumping this, as I am faced with the same challenge.


    A salesperson from OWC suggested that the 8GB memory upgrade kit needs an udpate. I started with downloading Mac mini EFI Firmware Update 1.2 which refused to install.


    Upon further lookup I noticed that the update is meant for

    Mac mini (Early 2009)

    whilst mine is a Late 2009 one. Here is the info from System Profiler:


    Model Identifier:          Macmini3,1

    Boot ROM Version:          MM31.00AD.B00

    SMC Version (system):          1.35f1


    Any ideas on how to proceed?

  • NeonNocturne Calculating status...
    Currently Being Moderated
    Apr 29, 2012 4:12 PM (in response to ekokkoris)

    I'm bumping your bump as well. I have a late 2009 MM as well and in order to fully utilize the 8GB as stated on a few memory sales sites (OWC,Crucial, etc) I need the MM31.0081.B06 (obtained with the EFI 2.1 Firmware upgrade). Some users in this forum as well as mac rumors, and OWC have said that if you have a Late 2009 model Mac Mini that it may have come preinstalled with the latest firmware and even though it shows MM31.00AD.B00 , it is set to use 8GB's fully without issue of slowdown/crashing after what Apple recommends (4GB). The firmware update list does not list the Late 2009 model Mac Mini as needing an update but I still haven't heard a clear answer if we are limited to 4GB/6GB or not.


  • mooblie Level 4 Level 4 (1,915 points)
    Currently Being Moderated
    Apr 30, 2012 7:45 AM (in response to NeonNocturne)

    FWIW, I have a Late 2009 mini - with 8GB RAM installed (as recommended by Crucial) as follows:

    mini ram.jpg


    Seems to work fine to me.

  • NeonNocturne Level 1 Level 1 (0 points)
    Currently Being Moderated
    Apr 30, 2012 1:55 PM (in response to mooblie)

    YES! This is the confirmation that I was looking for. I saw this earlier on my phone and apprisheate this so much! Picked up the ram locally and will install tonight. Again many thanks!


    PS: That image needs to be posted on quite a few forums hahaa


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