How to Prepare for Big Sur

[email2011]

I am also looking to move away from my iMac 13,2 definition which has worked wonderfully up till now. Any hint on what I should try with my older system?

 

[Sniki]

From my experience there are only two values that allow you to properly sign in and use iMessage without getting a single error code.

MLB (Board Serial Number) and ROM, if you take those two values from a real mac hardware that is either discontinued or damaged, generate your own unique(unused) serial number according to the SMBIOS that you want to use and your own UUID, paste the MLB and ROM taken from that Mac, you have 100% successful sign-in rate and never get any error.

Newer AppleID(s) no matter if all values are correctly generated and properly match, you won't be able to ever sign in to iMessage, you will get the error with customer code and have to call Apple, even that route didn't work on my case and simply gave up, grabbed a few old non usable MLB and ROM pairs for my devices and use that way.

 

[tom111]

Did a fresh install from an USB-Installer.
OpenCore 0.6.3, updated Kext.
Installation process was very slow, although I have a very fast Hackintosh.
Ethernet was not working. I had to set DisableIOMapper to yes, in order to make it work.

 

[kazz3m]

Hi!

Is this option still valid on 11.0.1 - https://medium.com/@andv/making-wif...d-macs-with-failed-with-66-error-36c98e3f7965 ? I need to modify IO (BT and WiFi for 94360) kexts in /System/Library/Extensions. It ends with restart to recovery on boot :/. How I should create and apply precompiled kernels or is there another option?

 

[rcampillo1]

boot verbose so you can get an idea of the issue, make sure you added the new config.plist entries

Hello there !!! ... Finally I managed to install Clover 5123.1 and it is working fine in my Catalina 10.15.7 OS !!! ... I have modified my config.plist file to include the "Quirks" ... and I started the Big Sur update !!! ... In the first reboot ... the computer goes into the installation but it NEVER does something beyond the Apple Sign !!! ... It stays there as waiting for something !!! ... As you mentioned ... I rebooted in verbose but I have no idea about what is happening !!! ... Here I include a screen capture of the last screen when it stops ... And ... I also include the actual config.plist which is being use !!! ... I appreciate your time and any help you can give me !!! ... THKSM ...

 

[Gerard71]

Hello there !!! ... Finally I managed to install Clover 5123.1 and it is working fine in my Catalina 10.15.7 OS !!! ... I have modified my config.plist file to include the "Quirks" ... and I started the Big Sur update !!! ... In the first reboot ... the computer goes into the installation but it NEVER does something beyond the Apple Sign !!! ... It stays there as waiting for something !!! ... As you mentioned ... I rebooted in verbose but I have no idea about what is happening !!! ... Here I include a screen capture of the last screen when it stops ... And ... I also include the actual config.plist which is being use !!! ... I appreciate your time and any help you can give me !!! ... THKSM ...

hi it is the quirks which are badly set for your cpu, the settings change depending on the cpu generation and the version of clover, macOS version
it will be easier to use this tool to make a basic EFI opencore the name of this program is OC GEN-X

once your installation is done you can finalize by following the guide
https://dortania.github.io/OpenCore-Install-Guide/config.plist/haswell.html#deviceproperties

you can check your config.plist opencore at

OpenCore config.plist Sanity Checker

Sanity check your OpenCore config.plist

opencore.slowgeek.com

 

[rcampillo1]

hi it is the quirks which are badly set for your cpu, the settings change depending on the cpu generation and the version of clover, macOS version
it will be easier to use this tool to make a basic EFI opencore the name of this program is OC GEN-X

once your installation is done you can finalize by following the guide
https://dortania.github.io/OpenCore-Install-Guide/config.plist/haswell.html#deviceproperties

you can check your config.plist opencore at

OpenCore config.plist Sanity Checker

Sanity check your OpenCore config.plist

opencore.slowgeek.com

THKSM Gerard71 ... I will read ... and try !!!

 

[JustTweeting]

I updated to VirtualSMC but it says "keys not found" while booting.
How do I fix that?

 

[JustTweeting]

I updated to VirtualSMC but it says "keys not found" while booting.
How do I fix that?

Clover r5126 btw

 

[benjenq]

I am also looking to move away from my imac 13,2 definition which has worked wonderfully up till now. Any hint on what I should try with my older system?

I've tried Big Sur beta 5 before. I changed from iMac 13,2 (Clover 5117) to iMacPro1,1 (OpenCore 0.6.1) , and it works well.