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Gigabyte Z490 Vision D (Thunderbolt 3) + i5-10400 + AMD RX 580

Can you change the SN on an already built system, or is it best to create a new system drive with new config and migrate stuff over? As well as the SMBIOS system type?
 
Can you change the SN on an already built system, or is it best to create a new system drive with new config and migrate stuff over? As well as the SMBIOS system type?
We can change the serial number and any other PlatformInfo property on an already-built system. But we should do that as follows:
  • With the original PlatformInfo, log out of iCloud
    • System Preferences --> Apple ID --> Overview --> Sign Out
  • Then change PlatformInfo
  • Reboot
  • Log back in to iCloud
    • System Preferences --> Apple ID --> Overview --> Sign In
 
We can change the serial number and any other PlatformInfo property on an already-built system. But we should do that as follows:
  • With the original PlatformInfo, log out of iCloud
    • System Preferences --> Apple ID --> Overview --> Sign Out
  • Then change PlatformInfo
  • Reboot
  • Log back in to iCloud
    • System Preferences --> Apple ID --> Overview --> Sign In
Casey do you know if this will affect any installed software? Will I need to unregister them and the re-register with new system?

Thanks as always.
 
Casey do you know if this will affect any installed software? Will I need to unregister them and the re-register with new system?

Thanks as always.
Yes, most third party software will need to be re-licensed because they are tied to system serial number and may also be tied to System UUID plus Board Serial Number.
 
A little confused. I thought the idea was to find a SN that is legit but not registered to get iCloud working? Or am I wrong, you need to generate an incorrect none apple SN of a none existing mac?

@bazzevo,

You need to have a S/N that matches the correct syntax/format for the SMBIOS you are using that is unregistered with Apple, use the procedures in the iMessage guide to check that the S/N is valid but unregistered :-


The S/N contains elements of the MLB/Board type so when you change the SMBIOS type you must generate all new system critical ID's (S/N. ROM, MLB, SM-UUID ..etc) all these id's are checked by Apples servers when using the on-line services and if any of them are incorrect then you will not be able to use iMessage, iCloud, App Store .. etc

Cheers
Jay
 
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So after many hours of fussing I have finally managed to install Mojave on my Z490 D.

1. Update OpenCore too 0.6.8. (0.7.2 failed to allow the upgrade).
2. Changed SMBIOS to iMacPro1,1. New SN, ROM, MLB, SM-UUID.
3. Changed
Cpuid1Data to ED060900 00000000 00000000 00000000, and Cpuid1Mask to FFFFFFFF 00000000 00000000 00000000

Once this was all done, the install worked. Very happy with this as I have a bunch of apps no longer supported or in development, which would not run in Catalina. Plus I can still use 32Lives to wrap my old school 32bit to 64bit plugins. Amazing.

Thanks to the forum for suggestions and insight on making this work.
 
Congrats !
It was explained here ;-)
 
Hello,
I installed 11.1 using this thread and the machine seems to be working fine for several months.
I just bought an Apollo Twin but crackles and distortions appear randomly and whatever the program.
Do you have any idea to help me solve this problem?
Thank you very much for all the valuable information found here
 
Hello,
I installed 11.1 using this thread and the machine seems to be working fine for several months.
I just bought an Apollo Twin but crackles and distortions appear randomly and whatever the program.
Do you have any idea to help me solve this problem?
Thank you very much for all the valuable information found here
Plz try to set "CPU Base Clock" to 100.0 MHz or 100.01 MHz, not Auto, and test your Apollo Twin.
CPU Base Clock may affect audio USB devices, in "Auto" BIOS sometimes set it on 99.95 MHz or something like that...
 
Hi! Sorry to bother with this but I´ve been trying to update to OC 7.2 with no results.
I tried downloading the files from the update guide and manually copying all the Platform Info but I can´t get my system to boot. Tried the same thing with HackinDROM but I get the same result. I even tried manually updating OC using dortania´s guide and manually copying my previously working config and still the same.
This is what happens: I boot into the OC picker but when I chose Catalina, the apple logo comes up and suddenly reboots the computer. After that, it goes straight into recovery mode without showing OC boot picker.
This is my first time trying to generate a log so please, let me know if this is enough to help me out. I also attached my current EFI.
My specs are this:
MoBo: z490 vision D
CPU: i7 10700k
RAM: 32 gb steel viper 3200mhz
SSD: 2x Corsair Nvme M.2 Force mp510 500gb
GPU: Gigabyte Radeon rx5600xt
 

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