“Secret” Firmware lets Late ’08 MacBooks use 8GB.
Every once in a while, a blip on the radar comes up, letting us know that there’s something not quite right in our little corner of the Mac Universe. This time around, it came in the form of Tweets directed to us, as well as in posting in popular Mac forums.
As it turns out, several other memory vendors—along with some Late 08 MacBook/MacBook Pro users—have laid claim to these machines working with 8GB of RAM. This was contradictory to our testing in December 2009 which quite clearly showed that while these models recognized a full 8GB, if an application addressed more than 6GB, the system would slow down significantly.
Not being the type to just let these sorts of claims to go unchallenged, we went back to our testing lab, grabbed the affected model machines, running 10.6.6. and dropped an 8GB upgrade kit in them.
Related: Now is the time to upgrade your memory with OWC!
The results were exactly the same as in 2009, lending credence to our conclusions, but the sheer number of claims to the contrary led us to continue searching—and the trail ended at Apple.
In late 2009, an EFI Firmware Update was released to address the buzzing noises coming from the optical drive. However, it seems that somewhere along the line, Apple changed this update without notating it anywhere.
Whether any other elements were affected by this change is undetermined, but it did change memory addressing; with the later version of the update installed, you could address a full 8GB in Snow Leopard. Unfortunately, Software Update doesn’t show this version as being different from the previous one, so users wouldn’t be notified if they had already updated their firmware to the older version.
The practical upshot of all this is that if you installed the EFI Update when it first came out, like we did, you would have gotten the old code, which meant your computer would only address 6GB properly. Those who didn’t upgrade until after Apple changed the updater got the newer firmware, which allowed proper addressing of 8GB.
Once we manually installed the “updated” version of the EFI Firmware in our test machines, they were able to address 8GB normally, without any crashing or slowdowns.
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 model w/ExpressCard Slot
- MacBook Pro 15″ 2.53GHz model w/ExpressCard Slot
- MacBook Pro 15″ 2.66GHz model w/ExpressCard Slot
- MacBook Pro 15″ 2.8GHz model w/ExpressCard Slot
- MacBook Pro 15″ 2.93GHz model w/ExpressCard Slot
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.
- **IMPORTANT NOTE: EFI Firmware Update 2.8 was released on February 28, 2012 for the Later 2008 MacBook Pro. If you have installed that update, your Boot ROM version will be MBP51.007E.B06. If you have this update installed, you’re already able to install the 8GB without any problems and don’t need to perform further updates to install more RAM.
If your Boot ROM version does not match the numbers above, download the appropriate firmware updater for your model machine and install according to the instructions:
- For MacBook Pros (MacBookPro5,1)
MacBook Pro EFI Firmware Update 1.8 - For MacBooks (MacBook5,1)
MacBook EFI Firmware Update 1.4
Once you have ensured that the Boot ROM is the correct version, make sure your Operating System is updated to OSX 10.6.6. You must be running Snow Leopard or later to address 8GB on these systems, and our testing was done with 10.6.6, which is the earliest version we’re currently supporting for this.
Pardon us for our initial skepticism on this larger memory capacity finding. We had some pretty good reasons for it. First, this is the first time in our recollection that an EFI update and a dot version OS update both combined to affect memory addressing. Secondly, this reminded us of when after we were the first to qualify 2007-2009 Core 2 Duo MacBook Pro and MacBook models supporting 6GB max without experiencing a dramatic system slowdown, certain memory resellers pushed the same idea about 8GB compatibility.
Or in other shorter words, if we can’t prove either benchmark performance gains and/or system stability, we’re just not going to market a memory upgrade just to pad our MaxRAM credentials.
Your trust in us is more important than any other objective here.
UPDATE – FURTHER CLARIFICATION
Judging by the sheer number of comments, there seems to be some confusion as to which MacBooks and MacBook Pros this update applies to. We’ve created a simple flowchart that should help clear up some of the confusion.
UPDATE: FEBRUARY 2012
EFI Firmware Update 2.8 was released on February 28, 2012 for the MacBook Pro, to resolve graphics issues. It does not disable the 8GB compatibility the previous firmware revision granted.
Hello. I want to upgrade my mac to 8gb ram. I have macbook pro 5,1 late 2008 with Boot ROM Version: MBP51.007E.B05 so far is ok. I have 2x 2 GB Type: DDR3 Speed:1067 MHz instaled.Can I upgrade to 2 x 4.0GB PC8500 DDR3 1066MHz 204 Pin? There is little speed difference 1067mhz- 1066mhz, is it important? Any suggestion?
Is my 17 inch macbook pro compatible with 8 gb ram?
Model Name: MacBook Pro
Model Identifier: MacBookPro4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.5 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP41.00C1.B03
SMC Version (system): 1.28f3
and if not, what would be a good way to upgrade it so it can process my editing programs better?
According to our MaxRAM Memory Certification, your Early 2007 17″ MacBook Pro is capable of supporting up to 6GB of memory. This is a limitation of the memory controller itself and cannot be changed.
For better performance, installing a Mercury EXTREME Pro 3G SSD may give you the boost you need. For further tips I suggest you check out the Mac Performance Guide, as many tips there can also help get the most out of your Mac.
Thank you! So in theory 2 3gb ram cards would work? any brands you would recommend?
Why yes Jordan….we recommend OWC brand with it’s lifetime warranty. And it’s a 4GB and 2GB module set you would choose:
http://eshop.macsales.com/item/Other%20World%20Computing/5300DDR2S6GP/
thank you! Out of curiosity, would it be more beneficial to me and what I use my computer for, which is design, photo editing, and film editing, to just get a new macbook? or can my current macbook continue to serve my uses? I’m just curious what you think the best thing to do is here, I am a student in school and I need something cost effective, but if upgrading this machine isn’t going to last me in the long run, I’d rather upgrade. What do you think?
If it was just just photo editing, the 6.0GB should do just fine for you – I used Photoshop CS5 for a considerable time on 4GB in my Late 08 Macbook Pro with no major problems. With film, however – especially if you do a lot for school – jumping up to one of the newer MBPs may be better for you in the long run.
Even if you do that, though, you’re still going to want to maximize your RAM and hard drive. If you do that through the factory, it’ll cost you an arm and a leg. A similar amount of RAM purchased through OWC is almost always less expensive initially, and we even offer a rebate on the RAM.
An added benefit to a newer machine is that you could also take advantage of our Data Doubler, which would allow you to install an SSD for your OS and apps (giving you another nice speed boost), and use your platter-based drive for data.
Hi!
I would like to upgrade my Macbook Pro 5.1 to 8 Gigs.
You mentioned only 2.53 and 2.8Ghz models, but I have 2.66. Is it also upgradable?
Here is my configuration:
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.66 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.007E.B05
SMC Version (system): 1.41f2
Serial Number (system): W890912571A
Hardware UUID: 201FE0D3-BC07-5C1D-9B7C-5E5CF808B0DF
Sudden Motion Sensor:
State: Enabled
Is it possible to upgrade it to 8 Gigs?
yes – your model is 8GB capable.
Allright so I’m running a MacBook Pro with a Model ID of MacBookPro5,1 and Boot ROM Version of MBP51.007E.B05.
so far so good…
I like how you guys are legit on tests, the blog is organized and the lifetime warranty really got my attention, so I’m planning on upgrading my RAM, I did found a cheaper one from kingston on amazon tough… besides the lifetime warranty what could you tell me to convince me to buy from OWC? Is your memory actually better than kingston’s?
btw Im comparing this one: Kingston ValueRAM 4GB 1066MHz PC3-8500 DDR3 SO-DIMM Notebook Memory (KVR1066D3S7/4G)
and this one: 8.0GB OWC Memory Upgrade 2 x 4.0GB PC8500 DDR3 1066MHz 204 Pin
thanks..
Why Buy OWC Brand Memory?
All OWC memory meets or exceeds manufacturer specifications.
All OWC memory is rigorously in-house lab tested to ensure superior quality, compatibility and reliability.
All OWC memory is backed by an industry leading lifetime advanced replacement. If you need your OWC memory replaced, we will ship to you same day.
We’ll even buy back your old memory and show you how to install it in your Mac.
Hmm.. and I did found out that the ValueRAM from kingston is not guaranteed to work… is made of a poorer quality than the others.. and now that you said that you can do the rebate on my old RAM it all sounded convincing enough =D… I’m buying OWC.. thank you
Prior to installing my 2 4GB chips from OWC, System profiler showed:
Model Name: MacBook
Model Identifier: MacBook5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 2 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MB51.007D.B03
SMC Version (system): 1.32f8
Serial Number (system): W88501YU1AQ
Hardware UUID: 118412F0-732E-50DA-82FF-6ECE4CEDBFB3
Sudden Motion Sensor:
State: Enabled
I attempted to install the EFI upgrade but it said I didn’t need it.
I installed the two 4GB chips. Now system profiler shows:
Model Name: MacBook
Model Identifier: MacBook5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MB51.007D.B03
SMC Version (system): 1.32f8
Serial Number (system): W88501YU1AQ
Hardware UUID: 118412F0-732E-50DA-82FF-6ECE4CEDBFB3
Sudden Motion Sensor:
State: Enabled
Note – it shows 4GB, not 8GB. What gives?
Like your initial experience, do i have an early version of the EFI and need to force the upgrade?
if so, how?
hi is my machine upgradeable to 8gb ram
model id macbook pro 4.1
2.5ghz
boot rom version mbp41.00c1.b03
Sorry to inform you Robert but looks like 6GB max according to our testing and page:
http://eshop.macsales.com/shop/memory/MacBook/Pro/Core2/
still…more memory always equals a faster Mac….so you’ll still see gains by adding the max
thanks grant
Hi!
I tried the 2 firmware updates:
http://support.apple.com/kb/DL975
and
http://support.apple.com/downloads/MacBook_Pro_15_inch_SMC_Firmware_Update_1_2
but i keep getting that my macbook does not need this update??
Modelnaam: MacBook Pro
Modelaanduiding: MacBookPro7,1
Processornaam: Intel Core 2 Duo
Processorsnelheid: 2,4 GHz
Aantal processors: 1
Totaal aantal cores: 2
L2-cache: 3 MB
Geheugen: 6 GB
Bussnelheid: 1,07 GHz
Opstart-ROM-versie: MBP71.0039.B0B
SMC-versie (systeem): 1.62f5
That update is for the Late 2008 model macBook Pro 15″ machines only. You have an Early 2010 model. The firmware update does not apply to your machine.
So why can’t i upgrade to 8gb?
You should be able to upgrade to 8GB of memory as that is the amount Apple supports on your model.
When i mount the 8gb, my macbookpro7,1 stops during booting. I get the white screen with the gray apple and the little circle stops turning. Even after 10 minutes the macbook has not booted….
Try each 4GB module individually and see if you still have the same issues. It may be one of the modules has failed. Luckily, all OWC memory comes with a Lifetime warranty and can be replaced if that is the case. If each module boots individually though, please contact our Technical Support department for assistance in further troubleshooting.
So this is me…
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 2 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.007E.B05
I want to update my RAM, but not quite sure if I can use 8GB, I don’t have much experience with these things, so can you please tell me if I can use 8GB? Thanks!
Yes you can.
Hi sorry to ask but i have a Macobook Pro and want to uy 8gb but i have Lion this is for snow leopard or can install 8 with lion ??
As long as the firmware has been updated and the Operating System is updated to OSX 10.6.6 or later (that includes Lion) the 8GB is possible.
Dear,
I would like to ask if the next models are also compatible:
Kingston 2 GB SO-DIMM (link to other Web site removed)
Kingston 4 GB SO-DIMM (link to other Web site removed)
I understand that you also shell your own components, but if could please help me..
Thanks,
Joseph
Unfortunately, we cannot comment on the compatibility of any memory modules other than those sold by Other World Computing. We have not tested them ourselves, and therefore cannot offer a recommendation either way.
If I could be clearer with my question: How do I update to Boot ROM version MBP51.007E.B05 from version MBP51.0067.B00 when attempting to manually install MacBook Pro EFI Firmware Update 1.8 I get the message “This computer does not need this update”?
I am following the instructions of this article so that I may enable my machine to support 8GB of RAM. How do I successfully achieve this?
Original post:
“Hi, I have a late 2008 MBPro 15″ 2.53GHz (w/express card slot) and Model ID MacBookPro5,1. Boot ROM version MBP51.0067.B00 running OSX 10.6.8. When I try to manually install the MacBook Pro EFI Firmware Update 1.8 I get the message “This computer does not need this update” and I am not allowed to continue the install/update. Please help as I am very interested in purchasing and upgrading my RAM from 2GB to 8GB. Thank you!”
Any ideas?
1. Download the firmware update from http://support.apple.com/kb/DL975
2. Run the updater.
One thing to check if it isn’t working for you is whether or not the SMC firmware is up to date as well.
http://support.apple.com/downloads/MacBook_Pro_15_inch_SMC_Firmware_Update_1_2
If still experiencing and issue, please contact our Technical Support Team and they would be happy to assist in troubleshooting.
Hi I have a MacBook Pro
Model Identifier: MacBookPro4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 2 GB
Bus Speed: 800 MHz
Boot ROM Version: MBP41.00C1.B00
I just upgraded to OSX 10.6.8 and would like to boost the memory to 8GB as this computer is used in the field for video editing. It is a DDS 2 memory. Is 8GB possible for my set up? Thanks in advance PS: Just purchased a new MBP 17″ built out and received it only to find out LION will not support final cut studio 2 HD.
Your MacBookPro4,1 is OWC MaxRAM Certified to use up to 6.0GB of memory.
Hi, I have a late 2008 MBPro 15″ 2.53GHz (w/express card slot) and Model ID MacBookPro5,1. Boot ROM version MBP51.0067.B00 running OSX 10.6.8. When I try to manually install the MacBook Pro EFI Firmware Update 1.8 I get the message “This computer does not need this update” and I am not allowed to continue the install/update. Please help as I am very interested in purchasing and upgrading my RAM from 2GB to 8GB. Thank you!
What if you upgraded your MBP 5,1 as soon as the update came out? That is to say before the “secret” add-on of the 8 GB addressing capability? Would you still have the same version number but without the ability to utilize 8 GB of RAM? If so, how would one override the update version check?
Keep on tankin!
The “secret” part was more that it was an unannounced / unadvertised firmware update. If you updated anyway, you should be good to go and upgrade to 8GB.
i have upgrded 8 gb ram of kingston hoping for better speed in my mac pro 2009 13 ” as it was slow but not much changes and still slow
please advise proper steps for me as i am not so computer tech savy
regards
Dr srinivas
The MacBook Pro 13-inch Mid 2009 models are supported by Apple for up to 8GB of memory. Our benchmarking shows that when 8GB of our OWC brand memory is installed, it resulted in up to 50% faster runtimes of our Photoshop Action Test. Unfortunately OWC neither sells nor supports the Kingston brand. You may wish to contact Kingston customer support to discuss your situation.
Dear sir,
I am using a 13″ 2.0 gHz cpu which is one of the listed model.
I am runninig bootcamp with windows. One question is : can wondows 7 64 bits able to detect 8G RAM in this case?
Thanks.
As already answered in the comments… “As long as you’re running the 64-bit version of Windows 7, there shouldn’t be any issue in recognition.”
Hi there
Great article
From what i’m reading, my Macbook Pro 15″ Late 2009, now running Lion, will work fine if I upgrade my memory from 2GB to 8GB.
Just wondering if anyone has any recommendations for brands or models of memory to go for?
Any help very welcome!
Other World Computing, of course! This is the memory you’re looking for.
I have the following:
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.53 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.007E.B05
It is running Mac OS X Lion 10.7.1 and i currently have 2 x 2 GB 1067 MHz DDR3. Will I be able to upgrade to 2 x 4 GB RAM? – Which brand is recommended?
Other World Computing, of course! This is the memory you’re looking for and, yes, we do ship worldwide!
Yeah, but to do ship to Denmark from some place inside EU? – Elsewise it will be quite expensive because of taxes and fees.
All our products ship from our headquarters in Woodstock, IL, USA.
Oh, okay – Thanks a lot for the answer. I would have to pay nearly double to get it to Denmark, so I’ll contemplate a bit more.
finally my MBP late 2008 is running with 8GB ram and 1 TB hard disk! Thanks OWC! I just got the items 2 days ago and so far everything is working ok, my Aperture 3 gain speed and I am happy I took the upgrade!
Awesome. Received OWC package today, installed it less than 5 min and now I am enjoying the 8gb memory on my late 2008 MB unibody 5,1. Thinking of removing optical drive and put a SSD in the near future. Thanks OWC.
Hey guys, I have a late 2010 macbook
MB71.0039.B0B
Model Identifier: MacBook7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Could i upgrade to 8gb ram without the EFI firmware change? Or will it even work if i update the EFI?
I am also running 10.6.8
The EFI update does not apply to your machine. The MacBook7,1 can accept up to 8GB of memory.
Yea i went to apple.com and searched EFI update.. im up to date and hoping this little upgrade to 8gb will work :D
Thanks!!!
I am running OS X 10.7.1. My MacBook configuration is given below. I was wondering if I can use 8 GB of RAM total. I appreciate your help in providing clarifications
Hardware Overview:
Model Name: MacBook
Model Identifier: MacBook6,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.26 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 3 MB
Memory: 2 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MB61.00C8.B00
Yes, the MacBook6,1 is capable of using 8GB of RAM.
Model Name: MacBook Pro
Model Identifier: MacBookPro4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.5 GHz
Number of Processors: 1
Total Number of Cores: 2
L2 Cache: 6 MB
Memory: 4 GB
Bus Speed: 800 MHz
Software Mac OS X Lion 10.7.1
Memory 4 GB 667 MHz DDR2 SDRAM
Questions
1) I know it’s upgradable to 6GB but do we need any extra firmware or software to update after installing to 6GB?
2) What’s the significant differance after the additional upgrade from 4GB to 6GB
Main use, Phototshop CS5 photo editing.
When opening a few apps at the same time now, the whole computer slows down. I am not able to play 720p and 1080p videos as it becomes jumpy and slows down. iTunes songs keeps slowing down too whenever I scroll or open new pages.
I should not have upgraded to Lion……!!!!
1. No additional firmware is needed.
2. You can see the performance differences yourself in our memory benchmarks.
In short, more memory is always better when running Photoshop CS5.
i have a late 2008 macbook… but its is has the components of a macbook pro 2.4 processor and 2gb memory. will i experience any problems using the firmware update provided…any long term affects? and since i have the components of a macbook pro should i download the firmware for the macbook pro?? please help
Open up System Profiler and check the Model Identifier (here are some instructions, if you don’t know how).
Hey Guys i have macbook 5,1 late 2008 2.53ghz model (with expresscard slot), and i’m currently running Lion 10.7.1 will i still be able to adress the 8GB memory ? or it’s a 10.6.6 only thing ?
Cheers,
Tiago
Still works – It’s a 10.6.6 or later thing :-)
The MacBook 5.2 (mid 2009) can use 2x 4GB! I have installed it on my wifes MB! It’s the last white MB befor the white unibody.
I have to ask because I don’t think anyone else has yet… but what of the MacBookPro3,1?
Am I crazy to think it may support 8 gigs, or will I need to be satisfied with 6 gigs?
When I bought this thing I loaded it as fully as I possibly could have with apple certs, so i’m hoping I can still squeeze a few years out of it before purchasing another one! This was a late 2007 model I believe, a 2.4ghz core 2 duo with stock 4 gigs of ram… i’m definitely IMMENSLY curious if I can update or not to 8! Anyone with the information, I would be very appreciative to have it relayed to me!
Looks like a few others have asked, I stand corrected, but still no answer. Also Lion is out now so i’m curious if this changes anything at all!
The MacBookPro3,1 has been OWC MaxRAM Certified to use up to 6GB of memory.
Wonderful article. I currently have a macbook (late 2008) 2.4 ghz with 4GB of ram running Lion. Under the system profile it’s listed as a macbook 4,1. I haven’t seen anything here or online that says that a macbook 4,1 can do more than 6 gigs of ram. I am wondering, based on your results, if I can indeed go ahead and use 8 gigs. Any information would be appreciated.
The MacBook4,1 models have been OWC MaxRAM certified up to 6GB of memory.
Any news on if the ram will be recognized by WIndows 7 through bootcamp?
As long as you’re running the 64-bit version of Windows 7, there shouldn’t be any issue in recognition.
Hi, great review! At last, my macbook pro has some easter egg feature in it. hahaha.
Do you (OWC) have representative in Indonesia? I want to upgrade my late 2008 mbp RAM to 8gb, but i’m afraid the other brand won’t be compatible (since OWC is the one make this research, and worked flawlessly).
Hope to hear from you soon. Thanks.
We do ship worldwide, but we are located in Woodstock, IL, USA.
WIll my late 2008 macbook pro compatible with PC10600 1333 MHz 8GB DDR3?
I use PC3-8500 1066 MHz 4GB DDR3 (2x2GB) right now.
Thanks a lot,
Stephen Gunawan
Hi Stephen…nothing to be gained by using that as well as not listed as compatible with your MBP….visit this page for the options recommended for your machine:
http://eshop.macsales.com/shop/memory/Apple_MacBook_MacBook_Pro/Upgrade/DDR3
Thank you so much. You are really helping. Appreciate it so much. One more thing to ask. As you may know, there is new firmware EFI 1.8 update. Will it change anything? Will it compatible with 8GB RAM? Is it ok to update? Thanks.
Best Regards,
Stephen Gunawan
The original point of this post is that EFI firmware update 1.8 was released for the MacBookPro5,1 models and that after applying the firmware update, those machines were able to address up to 8GB of memory instead of the previous maximum of 6GB of memory when running OS X version 10.6.6 or later.
So you will want to apply the EFI firmware update 1.8 (if it hasn’t already been updated) and make sure you are running OS X 10.6.6 or later (yes, that includes Lion) to be able to install two 4GB memory modules for a total of 8GB of memory.
I can confirm that PC10600 1333 MHz 8GB DDR3 memory will work in a MacBookPro5,1. I’ve been using it for over 6 months.
While some people may have success with other types and sizes, we STRONGLY recommend against using any other confirguation than what we have tested and confirmed for proper operation.
I just received my (2) 4GB sticks and thanks to this blog, I didn’t go buy a new MacBook. I need the memory for graphics projects and VMWare Fusion – and 2GB is painful. Memory is so low-cost that the price is barely a consideration any more!
Thanks tremendously OWC! You saved me at least $1300.
p.s. it was an upgrade from 2GB! Btw, OS X Lion runs like a dream now. Prior to the memory upgrade I was regretting the OS upgrade due to system slow-down and boot-time.
Hey Jeff-
So you CAN run Lion with 8 gigs of memory on a 2.4ghz Late 2008 MBP? I’m desperately trying to find out. Thanks!
-Colby
Yes, The 2.4GHz MacBook Pro released October 2008 (model ID: MacBookPro5,1) can use 8GB of memory. OS X Lion, while it requires 2GB of memory to run, 4GB or more is recommended for optimum performance.
Hi Michael,
with the following specifications, is it possible for me to upgrade to 8 GB DDR2 800Mhz? Thank you very much.
MacBook5,2
Intel Core 2 Duo 2.13 Ghz
MacOS 10.6.8
Memory 2GB
Boot ROM MB52.0088.B06
SMC Version 1.38f5
mathias, your MacBook can accept up to 6GB of memory.
thank you
Actually, my own experience is that this MacBook model does work with 8GB RAM. I tried it after I found this reference: “https://discussions.apple.com/thread/3008609”, burning it in with memtest86+ for four full passes, no errors, It’s been running on 10.6.7 for a week now, no problems. Like the Apple poster, my EFI firmware ends in B05, not B06, so I don’t know if that makes a difference.
Has anyone tired doing the EFI 1.8 update when using 10.7 (Lion)? I’m getting the message that I do not require the update. I don’t think I did it while I was running 10.6. I have the MBP51.007E.B05 firmware currently. Thanks
We don’t have a machine left that wasn’t updated to MBP51.007E.B05 prior to Lion’s release. However, you have the correct version of the firmware update already so you’re good to go!
Confirmed this works just fine, running on 10.7. Upgraded my MacBook5,1 from 4GB to 8GB, after reading a zillion articles claiming “does not” and another zillion claiming “it does”. :)
Boot ROM Version: MB51.007D.B03
Used two standard Kingston 4GB modules, 34€ each.
Any news if the 8GB upgrades work on Lion? I am thinking of upgrading my MacBook 5,1 with 1.4 EFI updated but the article addresses Snow Leopard only. Any help appreciated, thanks!
No issues in Lion whatsoever.
I am very curious about this topic. Not only I heard that with the update you can get those 8GB to work, but also you can use the same DIMM from later models.
https://discussions.apple.com/thread/2768756?start=0&tstart=0
I want to buy the latest Mac Mini server to unload many tasks I usually do on my MacBook. I wanted to use the DIMMs from the macmini (4GB) with my old macbook and upgrade the server to 8GB
Our macbooks have DDR3-8500 RAM and the mac mini DDR3-10600 RAM. According that person the 10600 modules DID work on his late 2008 macbook.
Does anyone knows about it? I am really concerned about messing up my macbook
I can confirm that PC10600 1333 MHz 8GB DDR3 memory will work in a MacBookPro5,1. I’ve been using it for over 6 months.
While some people may have success with other types and sizes, we STRONGLY recommend against using any other confirguation than what we have tested and confirmed for proper operation.
macbook 2ghz intel core 2 duo, 2 gb 1067 Mhz DDR3
Macbook5,1 2008 edition
I just installed 8GB of RAM in my 5.1 Macbook unibody with a 2.4Ghz C2D.
It’s working flawlessly and is recognized by OSX Lion. I am now running a memtest to be sure everything is fine, but by the looks of it it is.
I’m currently using the 8GB upgrade kit on my MacBookPro5,1 with OS X 10.6.8 and it’s working perfectly. I’m thinking about upgrading to Lion but I’m hoping to confirm that I will have no issues when I do. Here’s my current configuration from the System Profiler…
Model Name: MacBook Pro
Model Identifier: MacBookPro5,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 8 GB
Bus Speed: 1.07 GHz
Boot ROM Version: MBP51.007E.B05
SMC Version (system): 1.33f8
Yes…MacBook Pros with a Model ID of MacBookPro5,1 should have a Boot ROM Version of MBP51.007E.B05.
Do you mean there is no updated Boot ROM for OS X 10.7 Lion and the Boot ROM is working the same as with 10.6.8 and the 8GB continues to work?
If I’m reading this right, at some undetermined point, Apple changed the code of this EFI update (which was originally released on December 8, 2009) without changing the the revision name. In my case, I have the MBP51.007E.B05, but I performed the update the day it was released. Is it correct that a second revision of MBP51.007E.B05 was released at a later point (of which we do not know) and therefore there is no way to distinguish which firmware update is actually capable of handling 8GB? I’m running Lion on my 2.53GHz and I’ll be attempting an 8GB installation tomorrow. The OWC article states that they had to manually run the “same” update again to take advantage of the 8 gigs. If my upgrade doesn’t work, how can I reinstall the “new” EFI update manually like these guys did?
I can confidently say that a Late 2008 15″ MBP, 2.53GHz running OS X 10.7 Lion with the EFI firmware update MBP51.007E.B05 (which was installed the day it came out) works flawlessly on my machine with the newly installed 8GB of RAM. I opened just about every application on my machine and didn’t get a single kernel panic. I then performed an extensive memory test, which pegged the RAM usage at 99% for over an hour, with all tests coming back perfect. I’m glad I risked the upgrade. I’ll report back if I run into any problems, but for now, I’m running 8GB without any problems. Thanks for figuring this out OWC!
Hello Japsser, did everything work well after the memory test? I have the same laptop and am planning the 8 gb upgrade while running lion.
Ok thanks for the info. I’m trying to follow along and just want to make sure that I am indeed capable of upgrading to 8gb or ram. I have the following setup:
MacBook Pro 15″ 2.8GHz model w/ExpressCard Slot (Late 2008)
MacBookPro5,1
MBP51.007E.B05
Running the updated OSX Lion 10.7
Should I update to EFI firmware 1.8 or am I go to go ahead and increase to 8gb of memory?
Please respond when you have a chance.
You have the updated firmware – your system should be good to go!
How about a Macbook 5,2 (2.13)? It has boot firmware MB52.0088.B06 and was just upgraded to Lion? If so, what part number do I need to buy for 8GB?
Super article…very helpful. Question: If I upgrade to 8Gb, will it work with Lion?
Hi Ed…we’ll be confirming all memory configs just as soon as Lion is made publicly available.
It’s out! Has anyone tried it?
Hi there- great article.
I’ve got a late ’08 macbook pro and would really like to stick in 8gb memory (i use a lot of video editing and 3d rendering programs etc)
I’ve just updated to OS X Lion today, so it would be great to know if this 8GB is going to work with Lion without issue.
Many Thanks
Hi David…no issues at all…install 8GB and enjoy Lion.
What about my 2.66 GhZ late 2008 15″ MBP? My firmware is the one mentioned, and I have Snow Leopard. Will 8GB work?
If your MacBook:
has a Model ID of MacBook5,1
has a Boot ROM version of MB51.007D.B03
is running Mac OS X 10.6.6 or later
you should be able to address the full 8GB without the previously-found significant system slow down 8GB presented before this update.
i have a late 2008 unibody 2.4 macbook pro. the model identifer is 5.1 and the BOOT rom is MBP51.007E.B05. am i good to go up to 8gb. and if so, is this okay?
non-OWC brand memory link removed by editor
THANKS in advance!
Yes, your machine fits the qualifications.
One key factor to keep in mind is that OWC Brand memory meets or exceeds Apple’s specifications. As such, we are not stating that all brands of memory are included in this discovery, simply that OWC RAM has been tested and certified to work.
That said, the links to the compatible memory can be found in the post.
Hi, I have the MacBook Pro (15-inch, Late 2008), where the Boot ROM Version reads MBP51.007E.B05 but am running OS X 10.6.8. You mentioned that for the 8GB to work it has to be running on 10.6.6. Dumb question, but with the updates and eventual move to Lion, will the 8GB RAM still work?
10.6.7 & 10.6.8 have both shown no issues. When Lion comes out, there should be no issues with the full 8GB of memory being accessed either.
As answered earlier in the comments, the firmware update unlocked hardware’s ability to address 8GB; think of it like the chicken breaking through the shell of its egg – now that it has hatched into an 8GB chicken it won’t return to its 6GB egg.
there is a new EFI Firmware Update available for the MacBook Pro5,1. Does this affect the 8GB ram situation. You may want to update the article to refer to the new boot ROM version.
Hello Alistair,
According to Apple: http://support.apple.com/kb/HT1237 , the firmware update we refer to in the article is still the most current version.
As far as any searches on Apple’s site have shown, Version 1.8 (released in December of 2009 and linked above) is the latest version designed for the Late 2008 MacBook Pros (MacBookPro5,1).
If there is another such EFI firmware update, please post a link to its corresponding page on Apple’s site and we’ll take a look at it.
I’m receiving kernel panic every now and even having the latest firmware and OS, are others having problems like mine?
MacBook5,1
Intel Core 2 Duo 2 Ghz
MacOS 10.6.7
Memory 8GB
Boot ROM MB51.007D.B03
SMC Version 1.32f8
I tried manually updating using EFI 1.4 but it just say “Computer does not need this update”. Help :(
I have all the requirements for the upgrade on my MacBook 5,1 but I’m having trouble finding the answer to what I feel would be one of the most important questions…
How effective is the upgrade at enhancing performance?
The memory benchmarks have been updated to show the performance gains of 8GB of memory.
Scratch that…
http://eshop.macsales.com/shop/apple/memory/Macbook_Memory_Benchmarks
I seem to always miss the links to the posts that answer my questions until I ask them.
Thanks for all the great resources OWC!
the current EFI update, available on the apple site, was created on16/12/2009.
My MSHWFirmware_2009_12_31_10h27m46s.log (the log file which records the update for the optical drive) is dated the 31/12/2009. – (use console to check)
I think that means 8gig will work for me. – i will report after I receive the ram.
can anyone who updated before the 16/12/2009 tell me if their machine works with 8gig?
Is anyone having problems who updated after 16/12/2009?
OK, I read this today. I own an aluminium MacBook (MacBook 5,1). Your article says that your MacBook was already updated with the superdrive/EFI update and hence you had to re-download and install the newer one. The Boot ROM version of my computer is: MB51.007D.B03, which is what you say it should be. I had installed this update on Dec 9 2009. The current EFI 1.4 updater on Apple’s site updates the EFI to MB51.007D.003.
BTW, I downloaded it and ran the installer, but it quit saying “this computer does not need this update”. So will 8 GB work for me?
Thank you :)
Yes, it is not uncommon for the firmware update to be tweaked down the line to either optimize the update process or resolve minor issues that aren’t deemed widespread enough to merit another firmware update release. MacBook5,1 will update to MB51.007D.003 as the latest build of the updater is completed and 8GB should work without issue at that point.
Thanks for replying :)
I’m sorry I didn’t clearly understand you. My MacBook’s current Boot ROM version is MB51.007D.B03, but it refuses to update to MB51.007D.003. Are you suggesting that Apple is in the process of releasing an updater for this, because this installer is quite old (2009)?
Can I have 8gb with my current boot ROM version?
I think it was I that misunderstood you. If you have the MB51.007D.B03 version of the Boot ROM already, then that is the tested version that we announced this post with.
Yes, your machine can address 8GB of memory.
Thank you :)
I bought and installed the 8GB kit as soon as I read this blog. I have the proper firmware and model id. Everything was working perfectly, until the last security update. Since then, I have experienced dozens of kernel panics, and sometimes the laptop refuses to boot unless I remove one of the 4GB modules. Then it boots normally, and I can shutdown the machine and set the module once again.
Has anyone else experienced this?
I had this issue. Most likely, the RAM was not inserted tightly. Just pull all the RAMS and place them back again one by one and press each RAM stick until it fully inserted.
I don’t change hardware on my MAC often
but shouldnt you clear out the PRAM when doing a memory change?
I know on a PC I would reset the CMOS
Bought this upgrade. It wouldn’t work at first. Then, I switched the slots in which I placed the 4GB sticks and everything worked fine. That is, at first it was stick 1 in bottom slot 1 and stick 2 in top slot. Only one stick showed up as useful. Then, I switched stick 2 in the bottom and stick 1 in the top. It now shows 8GB of RAM total.
Bought this upgrade and tried following all of the directions. One slot says its empty, the other slot reads that it has 4GB of RAM in it. Is that the problem others have?