Patch-kexts.sh now has a new -iMac command line option that adds the necessary kext patches for (2011) iMacs which have been upgraded with Metal GPUs. When it is time to update to the next Big Sur build, make sure not to skip steps 7 or 9, especially on Late 2013 iMacs. Most existing users do not urgently need the improvements or bug fixes in this release and can wait until the next Big Sur beta (or GM) before updating. There are many changes in this release, mostly small changes I suppose, but different changes will be very important to different groups of users. LegacyUSBInjector.kext has been updated to account for a USB-related kernel change that happened in Big Sur beta 3.(As a side effect, LegacyUSBInjector.kext may no longer work properly on beta 4-9. A patch-kexts.sh bug has been fixed that could, under some circumstances, cause kernel panics during boot on Big Sur beta 10 (and probably subsequent releases) on 2011 or earlier Macs.In the process, error checking was improved considerably and several minor bugs were fixed. patch-kexts.sh has undergone some code refactoring.(My implementation of this feature is not 100% identical, but it is highly similar and based on Ausdauersportler's.) Thanks to Ausdauersportler for creating the initial implementation of this feature. patch-kexts.sh now automatically detects whether the Mac has an 802.11ac WiFi card and, if so, skips installation of the WiFi patch.As a neat effect of the increased code reuse, kext unpatching no longer requires booting from the installer USB first. This way, the unpatching can now reuse as much of the patching code as possible. unpatch-kexts.sh has been replaced by a -u option for patch-kexts.sh.If you have already installed Big Sur successfully using a previous version of Big Sur Micropatcher, you do not need to update immediately, but I would suggest updating the patcher before upgrading to any future Big Sur betas or releases.
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