Fixing iMessage and other services with OpenCore

This page is for those having iMessage and other iServices issues, this is a very basic guide so will not go as in-depth into the issues as some other guides. This specific guide is a translation and reinterpretation of the AppleLife Guide on fixing iServices: Как завести сервисы Apple - iMessage, FaceTime, iCloudopen in new window.

Your Apple ID is the single most influential factor in using iServices.

If you have existing Apple products in your account, such as an iPhone, you should have no issues whatsoever using a generated serial set. However, if you recently created an account, that does not have any existing Apple hardware or App Store purchases, you may be required to call Apple once you have attemped logging in.

The following items will be created below and are required to use iServices:

  • MLB
  • ROM*
  • SystemProductName
  • SystemSerialNumber
  • SystemUUID

*for ROM, we use the MAC Address of the network interface, lowercase, and without :.


You and you alone are responsible for your AppleID, read the guide carefully and take full responsibility if you screw up. Dortania and other guides are not held accountable for what you do.


Download GenSMBIOSopen in new window and select option 1 to download MacSerial and next option 3 to generate some new serials. What we're looking for is a valid serial that currently has no registered purchase date.

Tip: iMacPro1,1 10 will print 10 serials, this will save you some time on generating

Using macserial

This is for Linux users and an alternative to using GenSMBIOS.

Generate a new Serial and Board Serial (MLB) for your model.

To generate this you will need macserial.

You can download the latest release of OpenCorePkg from in new window

Or compile the development macserialopen in new window from source.

git clone --depth 1
cd ./OpenCorePkg/Utilities/macserial/
chmod +x ./macserial

Find your SystemProductName in your config.plist file. That is your model number.

Replace "iMacPro1,1" below with SystemProductName in your config.plist.

./macserial --num 1 --model "iMacPro1,1" 

Example output:

$ ./macserial \
        --model "iMacPro1,1" 
Warning: arc4random is not available!
C02V7UYGHX87 | C02733401J9JG36A8

The value on the left is your Serial number. The value on the right is your Board Serial (MLB).

Choose a MAC Address

Select a MAC Address with an Organizationally Unique Identifier (OUI) that corresponds to a real Apple, Inc. interface.

See the following list: in new window

For example:

00:16:CB    Apple   Apple, Inc.

Make up the last 3 octets.

For example:


Derive the corresponding ROM Value

ROM is calculated from your MAC Address.

Lowercase your MAC Address, and remove each colon : between the octets.

For example:

MAC: 00:16:CB:00:11:22

ROM: 0016cb001122

Generate an UUID

Type uuidgen in Terminal

$ uuidgen

Then simply replace those values in your config.plist:

Mac Address00:16:CB:00:11:22

It should look something like this:


NOTE: If you have trouble using the App Store, you may need to fix En0, depending on your hardware setup.

Brand new Apple ID's will almost certainly not work. Having other real devices in your account almost always works.

If you see a support warning, see below.

Serial Number Validity

Now enter the serial into the Apple Check Coverage pageopen in new window, you will get 1 of 3 responses:

We’re sorry, but this serial number isn’t validValid Purchase datePurchase Date not Validated

This last one is what we're after, as we want something genuine but currently not in use by anyone. Now we can translate the rest of the values into our config.plist -> PlatformInfo -> Generic:

  • Type = SystemProductName
  • Serial = SystemSerialNumber
  • Board Serial = MLB
  • SmUUID = SystemUUID

Note: "We’re sorry, but this serial number isn’t valid. Please check your information and try again." works for many users as well, do note though if you've had a bad track record with Apple/iServices you many need one that's "Purchase Date not Validated". Otherwise there may be suspicion

Note 2: Using a "Purchase Date not Validated:" can cause issues down the line if another machine of the same serial ever gets activated, for initial setup it can help alleviate issues with your account but in the long run an invalid serial can be a safer choice.

Note 3: Checking too many serials may result in you being ratelimited. To bypass this limitation you can try clearing your cookies or changing your IP.

Fixing En0

To start, grab Hackintoolopen in new window (Github linkopen in new window) and head to System -> Peripherals (Info -> Misc on older versions of Hackintool)

Here under Network Interfaces (network card icon), look for en0 under BSD and check whether the device has a check mark under Builtin. If there is a check mark, skip to Fixing ROM section otherwise continue reading.

  • Note: en0 can be either Wifi, ethernet or even Thunderbolt.

What if I don't have En0 at all?!?

Well, we'll want to reset macOS so it can build the interfaces fresh, open terminal and run the following:

sudo rm /Library/Preferences/SystemConfiguration/NetworkInterfaces.plist
sudo rm /Library/Preferences/SystemConfiguration/preferences.plist

Once done reboot and check again.

If this doesn't work, add NullEthernet.kextopen in new window and ssdt-rmne.amlopen in new window to your EFI and config.plist under Kernel -> Add and ACPI -> Add respectively. The SSDT is precompiled so no extra work needed, reminder compiled files have a .aml extension and .dsl can be seen as source code.

Find if set as Built-in

Now head under the PCI tab of Hackintool and export your PCI DeviceProperties, this will create a pcidevices.plist on your desktop

Export PCI address

Now search through the pcidevices.plist and find the PciRoot of your ethernet controller. For us, this would be PciRoot(0x0)/Pci(0x1f,0x6)

Copy PciRoot

Now with the PciRoot, go into your config.plist -> DeviceProperties -> Add and apply the property of built-in with type Data and value 01

Add to config.plist

Fixing ROM

This is a section many may have forgotten about but this is found in your config.plist under PlatformInfo -> generic -> ROM

To find your actual MAC Address/ROM value, you can find in a couple places:

  • BIOS

  • macOS: System Preferences -> Network -> Ethernet -> Advanced -> Hardware -> MAC Address

  • Windows: Settings -> Network & Internet -> Ethernet -> Ethernet -> Physical MAC Address

  • Note: en0 can be either Wifi, ethernet or even Thunderbolt, adapt the above example to your situation.

Some users have even gone as far as using real Apple MAC Address dumps for their config, for this guide we'll be using our real MAC Address but note that this is another option.

When adding this to your config, c0:7e:bf:c3:af:ff should be converted to c07ebfc3afff as the Data type cannot accept colons(:).

Verifying NVRAM

Something that many forget about iServices is that NVRAM is crucial to getting it working correctly, the reason being is that iMessage keys and such are stored in NVRAM. Without NVRAM, iMessage can neither see nor store keys.

So we'll need to verify NVRAM works, regardless if "it should work" as some firmwares can be more of a pain than others.

Please refer to the Emulated NVRAM section of the OpenCore Guide for both testing if you have working NVRAM and emulating it if you don't.

Clean out old attempts

This is important for those who've tried setting up iMessage but failed, to start make sure your NVRAM has been cleared. You can enable the option in the boot picker in your config under config.plist -> Misc -> Security -> AllowNvramReset.

Next open terminal and run the following:

sudo rm -rf ~/Library/Caches/*
sudo rm -rf ~/Library/Caches/*
sudo rm -rf ~/Library/Caches/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Preferences/*
sudo rm -rf ~/Library/Messages

Verifying your work one last time

Grab macserial from the latest OpenCore releaseopen in new window and run the following:

path/to/macserial -s

This will provide us with a full rundown of our system, verify that what is presented matches up with your work.

Cleaning up your AppleID

ids: identity-rsa-key-pair-signature-v1
ids: identity-rsa-private-key
ids: identity-rsa-public-key
ids: message-protection-key
ids: message-protection-public-data-registered
ids: personal-public-key-cache
iMessage Encryption Key
iMessage Signing Key registrationV1
etc ...

And a final layer of precaution is to make a new AppleID to play with, this makes sure that if you do end up blacklisting your account that it's not your main.

Tip: Adding a payment card to the account and having a decent amount of purchases can also help. While not concrete, you can think of an AppleID as a credit score where the better an Apple customer you are the more likely they won't have activation issues or get an easier pass with AppleSupport

Customer Code error

Well mate, you've done it. You blacklisted your AppleID. The fix is simple but not pretty, you MUST call Appleopen in new window. Otherwise, there is no proceeding besides using a new account. Adding a payment card before calling can help legitimize the account so it doesn't seem as much like a bot.

  • For Apple contacting, there are 2 methods