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Some Huge Sur customers are unable to replace macOS as a consequence of an MDM bug



Some Big Sur users are unable to update macOS due to an MDM bug


Earlier this week, varied macOS sysadmins started reporting that some Apple gadgets had been failing to improve to Huge Sur model 11.1. Affected customers might briefly see the 11.1 improve, however then it disappears from the replace UI and from the command line softwareupdate device regardless of not having been put in.

Faulty replace request

Developer Victor Vrantchan, of the open supply MicroMDM mission, says he is discovered the issue. Some Macs are erroneously requesting 11.0.1 as a substitute of 11.1 from Apple’s replace server—which replace is then rejected if the machine in query is already operating 11.0.1 or newer, as most such are.

Apple's update servers don't like it when you ask for a system update that's older than your currently installed version.
Enlarge / Apple’s replace servers do not prefer it whenever you ask for a system replace that is older than your at the moment put in model.

Whereas the misguided requests themselves are clear sufficient, the breaking situation is much less so. In accordance with Vrantchan, making the misguided request “in some way corrupts the state of the software program replace course of,” leading to a system that not presents the replace as an choice in System Preferences in any respect.

Restarting the affected system will make the replace seen once more—however that will or might not assist; if the subsequent try to put in 11.1 generates the identical misguided 11.0.1 request, the issue conduct will merely repeat itself.

Eradicating the MDM profile—for you non-Mac people and non-sysadmins, that is Apple’s misleadingly named Cellular System Administration service, which permits schooling and enterprise orgs to handle and “supervise” fleets of macOS and iOS gadgets—additionally makes the replace seen. That mentioned, mortals shouldn’t do that workaround evenly; messing with MDM has doubtlessly extreme impacts on system safety, and there is not any assure that re-enrolling the Mac in its office will go easily, both.

Can I simply obtain the 11.1 replace manually?

One seemingly apparent workaround could be to simply straight obtain and manually apply the replace package deal for Huge Sur 11.1. Sadly, Apple has deprecated combo replace packages—there is no handbook package deal to obtain or set up.

As of macOS Huge Sur, the format of the updates has modified—and so they can not be put in with out Web entry. Replace packages should come straight from Apple, and so they have to be managed by the softwareupdate course of itself. It is not even potential to make use of a customized URL for softwareupdate anymore.

How—or when—can I repair this?

Till we’ve extra concrete info on the situation inflicting softwareupdate to erroneously request 11.0.1 as a substitute of 11.1, there is not any assured method to repair the difficulty. Many customers are reporting that after rebooting and making an attempt to improve once more—in some instances, after rebooting and making an attempt a number of instances—the improve does undergo correctly.

Different customers report that eradicating the MDM profile fastened the difficulty fully—although we might nonetheless take into account {that a} very dangerous, Hail Mary play.

With no capacity to manually obtain and set up system updates as user-installed packages in Huge Sur, getting the bug patched could be tough. The bug won’t manifest when the system requests a unique model quantity, so maybe an replace to 11.2 will bypass the buggy requests and due to this fact be capable of repair the bug in 11.2 with out intervention. It could even be potential—if extraordinarily hacky—for Apple to sideload the replace into an unrelated patch that does not have an effect on the OS model quantity.

All else failing, a whole reinstall of Huge Sur from the App Retailer ought to get you to 11.1—though it is a 12.6GB download, and as with every main OS set up, you have to be completely sure you’ve got acquired good backups of all of your information previous to the try.

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