Memory upgrade to 8GB on unibody MacBook

Memory upgrade to 8GB on unibody MacBook I bought the 13" unibody MacBook one month prior to it's upgrade to become the new improved 13" unibody MacBook Pro (with unopenable battery compartment, extra 3 hours of battery life, more color gammut, SD slot, firewire 800 port, and a new 8Gb memory limit).
Asked by: Guest \| Views: 284

Total answers/comments: 3

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Guest [Entry]

"I just found that there IS a way to get the late 2008 macbooks up to 8GB RAM. Apparently Apple released a firmware upgrade to fix a problem with the optical drive that also expanded the memory limit to 8GB. Check out this posting on 9to5mac.

In case the link is down, here is a summary of what to do.
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. 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"

Guest [Entry]

The October 2009 unibody aluminium Macbooks supports 6GB (4+2) of RAM without any problems. 8GB doesn't work, though.

Guest [Entry]

"I've discovered through experimentation that my white 13"" MacBook Unibody Late 2009 A1342 updated to OS X 10.11.6 (El Capitan) can now run 8 GB (2×4 GB) of DDR3 1333 SODIMM taken from my Lenovo Y570 laptop. I had previously been running it on 4 GB (2×2 GB DDR3 1066).

Here are some screenshots from the MacBook:

Hopefully any brand of 2×4 GB DDR3 1333 SODIMM will work for you, but I suspect that the OEM SODIMMs from when I bought the Lenovo new several years ago
are 1.5 V so I have my doubts that 1.35 V RAM will work.
Anyways, the old ""4 GB 1066"" rules for this particular MacBook are now gone. :)"