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Apology my stupid :):). The version of MacOS is Monetery. EFI as attach.

Hi Guys I resolved the issues that mentioned above (AppleKeyStore ... Operation failed) by upgrade kext to last version. But there are new issues now, the boot process was freeze as attach, the CPU fan is in high speed (CPU is running). Any suggestion ?

Did anyone could share how long did you take when the system upgrade from Big Sur to Monetery ?

Still running ... ... a lot of "AppleKeyStore ... Operation failed" ... Should I wait it finish:?: ?

Should I turn the SIP off before the upgrading start?

Thx your reply :) . I will try it. Hope everything will ok :)

It still running :)

I am trying to upgrade to Monterey, but encountered some problem. After running Monterey Installer, and reboot several times, the boot process become slow and generated a lot "AppleKeyStore: 11114:537: operation failed". Is that normal ?

Thx your kindly reply. So, it did not need add the iGPU patch (.kext) in installation USB, right ? Just used the Opencore Legacy patcher app added the path after the installation done ?

Thx your kindly help :) .

Thx your reply :). I am using Big Sur now. So, Your meaning is does not suggest me to use Monterey on IveBridge architecture laptop, just keep using Big Sur, eight ?

I using the Ivy Bridge architecture laptop, and the iGPU (HD4000) did not support Monterey any more. The Monterey did not need patch to support dropped hardware ?

Hi Guys :) I have some problem when installing Monterey. I made a USB boot device with OpenCore Legacy Patcher (v1.0.1), and used it to try installing OS. When I click the Monterey installer in OCLP boot picker, it will take a black screen a little while and go back the boot picker, the...

Hi :) I have a laptop (Ivy Bridge CPU), I would like install Monterey with OpenCore 0.9.1, Did I need install OS by OpenCore-Legacy-Patcher if I using OpenCore 0.9.1 :) ?

It is all my fault, I did not found the problem is coming from my hardware. Reset BIOS resolving this issue.

HI I used BrightnessKeys.kext (with OC 0.6.8) to fix keyboard key map. When I installed it first times, it works very will. But when I modified something (maybe) the BrightnessKeys.kext did not work, and I cannot recognized which modifications caused it workless. I try turn debug arguments...

Thanks your kindly reply. It did resolved my problem.

It works for me ^^. Thanks so much.

HI I am a newbie of opencore. I have installed the Big Sur with opencore 0.6.8 in my laptop (HP Pavilion dv6 7017tx), every seems fine except battery. For fixing this issues, i try builded hotpatch SSDT by myself, but it is failed, the SSD did not worked. Did any one can help ? Below is the...