iMac14,N (late 2013) Released

A couple of days ago Apple refreshed the iMac’s (late 2013) with Haswell processors and faster WiFi so it was time for me to have a look at the data. A bit late due to work related stuff (still waiting for a new server to arrive) but luckily it is nothing spectacular.

The first thing that I noticed is the version of OS X, being Mac OS X 10.8.4 (build 12E4022) and thus OS X 10.8.4 can be used with Haswell processors. All you need is the correct version of the mach_kernel and a hand full of kexts. The IGPU requires a couple extra kexts to get it going, but more importantly is device-property AAPL,ig-platform-id to let AppleIntelAzulFramebuffer.kext select the correct frame buffer/connector data. By the way; Apple does not set this device-property in a _DSM (ACPI Device Specific Method) but from their EFI.

Shortly after the iMac refresh Apple made two updates available for new iMac owners. The first one was Mac OS X 10.8.5 (Build 12F37) and then there was this EFI Firmware update (for both models). Something that changed the SMBIOS version to IM141.88Z.0118.B00.1309031248 and IM141.88Z.0118.B00.1309031249 respectively.

We now also have the board-id for both models, being Mac-031B6874CF7F642A and Mac-27ADBB7B4CEE8E61. The only thing that I cannot share with you are the serial numbers, but the rest should help you to change your SMBIOS settings to that of an iMac14,N.

The ACPI tables of the two new iMac models are mostly identical, with the exception of the addition of the GFX0 Method. Of course. There are a couple of other changes, but nothing really spectacular.

Want to have a look for yourself? Ok. First download and run it in a terminal window:

sudo [perl]

Make sure you run it from the folder with the extracted ROM files in it. You can extract the IM141_0118_B00_LOCKED.scap and/or IM142_0118_B00_LOCKED.scap file(s) with help of Andy’s PhoenixTools.

Please note that Sam’s Perl script (thanks to BlackOSX for sharing the link to the original file) only works with the extracted ROM files, but it did extract the following ACPI tables from the .scap files:


You can locate the files in the AML folder, but Sam’s Perl script also decompiles the ACPI tables, automatically, in a DSL folder. This way you can open them straight away. Right after the extracting processes has finished.

Ok folks. This has to be it for now. I may update this blog post at a later date, but now I have work to do (the new server finally arrived).


I already changed Sam’s Perl script a little (now also extracts the DMAR table) but I have changed it even more and added the following (missing) tables to the list: APIC, ECDT, FACP, FACS, HPET, MCFG and SBST.

The problem with the data is that we need to patch it up before we compile it, and even then everything won’t be there. This because the missing address data is unknown until the EFI startup process.

Running a new updated version of Sam’s Perl script did extract all tables, but it also showed me that some of the available tools, notably IOJones, still fail to extract some essential ACPI tables. Which is too bad for such a nice tool, but using IOJones to extract the tables from newly released hardware, especially when you are looking for the data to patch your ACPI tables for power management… that won’t get extracted. Luckily we can put the data together with both tools. A bit of work, but it works.

I haven’t checked Darwin Dumper myself, but if you used it to extract data on a new MacBookAir and/or iMac then please share your results so that I can check it. Thanks!


The latest version of is available for download here.

6 thoughts on “iMac14,N (late 2013) Released

  1. Nothing really groundbreaking in terms of new ACPI tables, as you say… frankly, I’ve expected something major… well the only major thing is that apple has finally ditched EHCI, but it wasn’t there on MBA6,x either.
    Most of this SMBIOS data for new iMac could be obtained from primatelabs rankings shortly after machines were released (with up to date ROM versions too!). iMac14,1 has surfaced there on Sept 24th and 14,2 shortly after, on 25th.
    If you have access to these new machines, would you be kind enough to at least share the model code (last 4 characters from the serial number)? It’s not disclosing anything private, just general info about the units. People who are technically inclined to calculate a valid serial would be happy to get the last bit of SMBIOS info missing for iMac14 line up.

    • Sure. I know that people use GeekBench results to obtain SMBIOS data, but there has been so many invalid (read: fake iMac’s) showing up there (too early) that we cannot trust it. Not all of them. This is why I linked to the latest EFI firmware update, so that people know where to get it, how to extract it, and that the data they see here is the real deal.

      I also have a few new/modified (Perl/Bash) scripts that I will release here (dropbox account) soon.

      Sorry. Don’t have (access) to new iMac’s right now (I am in London waiting for a flight to Glasgow). We do have some at work, but sharing data from them is a no-go (coworkers are reading my blog to see if what I do is acceptable) so nope. No can’t do. Sorry.

  2. Yeah, I’ve got the numbers in a well .. had some time playing with
    curl -o – “”

    F8J2 – iMac14,1 base iris model
    F8J3 – iMac14,1 nvidia model
    F8J4 – iMac14,2 base model
    F8JC – iMac14,2 higher config model

  3. Pingback: Apple Serial Numbers Ending With F000-FZZZ | Pike's Universum

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s