I have a Mid2014 Retina MacbookPro. I’ve been running Sonoma since October and it’s been great aside from a few minor quirks. Recently the battery died and after putting it on charge and restarting, only one external monitor would work and the graphics seemed to lag. I tried to reapply the post-install patch and that lead me down a road where my Mac can no longer get past the post-login progress bar. I’ve tried to reinstall MacOS but the installer says “this version of MacOS cannot be downgraded” this is even after creating a new installer.
I cannot access the recovery on my MBP but I can use Terminal through the start up disk. I am able run the two commands to revert the EFI snapshot and then I can get safe mode to work. Its only then that I can I remove the two additional kexts that are in the extensions folder. This action gets it to boot but the graphics are slow and resolution is too high. I've tried numerous post-install patches from October's OCLP installer, even rebuilding and reinstalling OCLP but I find myself back to square one after reboot.
I'm at a loss here as I have a somewhat-functional machine now that was great just a week ago. I feel like I can recover this but am also willing to reinstall. Any suggestions before I completely wipe and start afresh?
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