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Last edited: 19 Aug 2019 For those who would still encounter issues with CMOS writes and subsequent BIOS resets or long BIOS POST at reboot, the attached pre-patched AppleRTC kexts should cure things. As indicated at InsanelyMac and other places, the patch consists of the following binary modification of the kext binary file: Find: 75 2E 0F B6 Replace by: EB 2E 0F B6 From Mavericks 10.9 to Mojave 10.14, AppleRTC shows a version v2.0. The patched kext can be used "as is" and, because version is up'ed to 92.0, will take precedence over the vanilla kext once placed in /S/L/E, in /L/E or injected through the bootloader from /E/E/ or E/C/k/10.x or E/C/k/Other folders. Patched_10.9_AppleRTC.kext.zip Patched_10.10_AppleRTC.kext.zip Patched_10.11_AppleRTC.kext.zip Patched_10.12_AppleRTC.kext.zip Patched_10.13_AppleRTC.kext.zip Patched_AppleRTC_10.14.3.kext.zip

Just another 1-2 weeks, and you will have updates from me sure. I am working on it as I have some issues with my dev environment right now to finish. Thanks for the patience.

There is no update yet. Unfortunately I did not update to latest OS X yet due to my work requirments, and also been away from OS X for long time. Just recently began to get back on my projects and working on them, but I have nothing to share yet. I will post updates too my projects as soon as I have something, and hoping its very soon (if my life gives me some room). Thanks and please wait for some time. PS: I will try to take a quick look by this month end if its simple fix, so keep turned to my thread and remind me in a week or two

Make sure you don't have Legacy Option ROMs enable in the BIOS, if you do disable it. Follow instructions from here to debug issue gen_debug -sysprofile