What about the Big Sur 11.6.1 full installer?ġst test – 11.6 installed = 11.6.1 Full InstallerĪfter using the 11.6.1 Full installer, macOS recovery will be updated to Monterey 12.0.1Ģnd test – 11.6 installed – 11.6.2 Beta Update We now know that installing the 11.6.1 update will update recoveryOS to Monterey. Howard Oakley wrote an excellent article on Fallback Recovery if you would like to learn more.Į/0/m1-macs-have-another-hidden-boot-mode/ More Testing Once in Fallback recovery, I attempted to modify the Startup Security Utility and got the message above. M1 Mac on 11.6.1 booted to Fallback Recovery Mode How can you confirm that you are booted to FBR? From the Apple Security Guide, you should not be able to modify system security. So I booted into FBR and it was on 12.0.1 Monterey. This a great troubleshooting tool that you could use if you installed an update but something went wrong. The idea here is FBR is a 2nd copy of recoveryOS that is one version behind. However, LLB doesn’t lock an indication into the Boot Progress Register saying it is going into recoveryOS, and therefore the fallback recovery OS doesn’t have the capability to change the system security state. The same process as recoveryOS boot, except that it boots to a second copy of recoveryOS that is kept for resiliency. If you are not familiar with FBR this is what Apple says about it.įallback Recovery = From a shutdown state, double- press and hold the power button. MacOS recovery is now on 12.0.1 Monterey after installing the 11.6.1 update on an M1 Mac. I then booted into recovery and found this. When the update was complete, the OS was on 11.6.1. I then installed the 11.6.1 update in System Preferences > Software Update. The version was 11.6 because I used AC2 and the 11.6 IPSW to restore. Then I booted into fallback recovery and it was on 11.6. I Booted into recovery, and recovery OS was on 11.6. I decided to test on my M1 that was on 11.6. I started talking with someone who knows the recovery system very well. You are offered the 11.5.2 or 11.6 update, you will also get Monterey Recovery. The Big Sur 11.6.1 update changed the normal process.ĮDIT: This happens with ANY Big Sur update!Įxample: You have a Software Update deferral in place. This was not what happened in Nathaniel’s situation. You can restore macOS and Recovery back to Big Sur with the 11.6 IPSW. The only way to fix this is to use Apple Configurator 2 + DFU mode. You now have an M1 Mac with Big Sur OS and Monterey Recovery.Boot to recovery with Big Sur USB Installer.There is one way you can get into this situation. How could you have an M1 Mac with Big Sur installed but Monterey as the recovery OS? What’s the equivalent to this on Apple silicon? If I’m not ready to move to Monterey, but recovery is only offering Monterey, what can I do? nstrauss The OS that shipped with your Mac vs the latest available supported version. MacAdmin first reported something strange last week. Normally when you install a macOS update, recovery gets updated so it matches the OS version.Įxample: You have an M1 Mac that has Big Sur 11.5.2 on it. If you installed the Big Sur 11.6.1 Update, Recovery OS will be upgraded Monterey on your M1 Mac.
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