Good morning!
It becomes better every night:
During this night
@internetzel,
@NOTNlCE and me did a lot of tests and we are pretty confident that the stock EFI folders generated by the latest
OCLP version are sufficient to use Mojave, Catalina, and of course Big Sur (all tests made on iMac11,1 and iMac11,3 and iMac12,2).
You will have to do new installations with Mojave and Catalina to get there! You can do an update with Big Sur with the next full installer available. It is not possible to change an existing
@dosdude1 patched installation. Backup, new installation, restore. The really
big advantage even for Catalina and Mojave: OTA upgrades are working again without 20 step post patching and rebooting.
So you all need to learn how to use OCLP - it is not that difficult.
Some expert hints:
- Mojave and older needs SecureBootModel to be Disabled in Misc->Security - this can be done within the OCLP patcher program.
- FakeSMC and EFICheckDisabler have to be added manually. This change is a manual edit of the config.plist and to the EFI/Kexts folder by adding the files.
- setting PlatformInfo->SystemProductName to iMacPro1,1 (modifying the spoofing) will enable to use the macOS installer programs directly called from the Finder, i.e. you can startup the Catalina installation from a High Sierra system in the very same way as on fully supported systems. Of course Apple allows only upgrades, i.e. you cannot start an Catalina installation from a Big Sur system. This change is a manual edit of the config.plist.
Notes: Will delete the 0.6.8 EFI folder and have already rewritten some posts and docs.
A marvellous achievement for iMac 2009-2011 users with metal GPU upgrade !
I tried the latest OC 0.6.8 EFI you posted on my iMac 2010 running BS 11.2.3 patched previously with iMac micropatcher.
Firstly, I prepared the OCLP Loader SD card with OC 0.6.8.
Secondly, with gibMacOS-master, I downloaded Big Sur 11.2.3 and ran the InstallAssistant.pkg to reconstitute the Install macOS Big Sur app in Applications folder.
Thirdly, I ran the createinstallmedia in the Resources folder of the Install macOS Big Sur app to create a bootable Big Sur Install USB thumb drive in GUID partition and Mac OS Extended (Journaled) format.
Fourthly, while the Big Sur USB Installer is not directly bootable in our unsupported iMac without patching, by booting from the OCLP Loader (after PRAM resetting) I can select the Install macOS Big Sur USB thumb drive to secondarily boot and start the Big Sur installation. I had it directly install over my prior Big Sur 11.2.3 again. That took over 30 minutes with multiple reboots with no need of user intervention. At some stage it may seem it was hanging with no visual changes but it would go through finally. Just be patient.
Finally I was greeted with the Big Sur login screen again. All my data and accounts are preserved. Everything works without any further patching. The only visual difference is the spoofed Mac identity of iMac Pro as compared to before.
Audio (Internal speaker), Bluetooth (4.2), Ethernet (build-in), Graphics/Display (RX480), and WiFi all work.
My internal USB3 modification still works.
Brightness control and Night Shift are enabled.
Hardware graphics and video acceleration are also fully enabled for my AMD GPU.
Even Apple TV+ works flawlessly.
There is no problem with Sleep and Waking.
No OpenGL performance drop in first Start, that requires Sleeping once to amend.
However, Macs Fan Control is confused by the spoofed Mac ID with changed fans labelling, and iStat Menu that I used to monitor the power consumption also gets a much reduced list of sensors reading.
Despite these minor glitches, Kudos to
Ausdauersportler and other developers here 👍