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Can't install Mac OS 11.2 update

After download updating and checking update I have message download error. How to fix this?

MacBook Pro Retina

Posted on Feb 6, 2021 12:23 AM

Reply
6 replies

Feb 6, 2021 3:04 AM in response to Greyisf

Same procedure shut down and this time Command + r immediately at startup. Recovery mode presents option and choose Reinstall macOS. This will attempt to download the Full Installer and install. It should not remove anything just update the files from Big Sur 11.1 to 11.2. ( I presume Empty Space Requirements are available - https://support.apple.com/en-ca/HT201475 )

Question - is FileVault enabled? If so make sure it as finished decrypting the drive before attempting.


Strongly suggest doing to Time Machine Backup first and if possible doing a Tested Clone to external drive - insurance.

Feb 9, 2021 9:23 PM in response to PRP_53

It looks like problem not in network. I have tried update from console. And receive following message:


softwareupdate -i macOS Big Sur-20D74 --verbose
Software Update Tool

Finding available software
Downloading macOS Big Sur
Downloading: 100.00%
Failed to download & prepare update: Error Domain=SUMacControllerError Code=7740 "[SUMacControllerErrorPrepareFailed=7740] Failed to perform Prepare operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_FILESYSTEM_DOESNT_VERIFY(3)_1_MobileSoftwareUpdateBOMErrorDomain:1|FullReplacementRequired|]" UserInfo={SUMacControllerErrorIndicationsSummary=|FullReplacementRequired|, SUMacControllerErrorIndicationsMask=2, SUMacControllerErrorIndicationsDescription=-> Full replacement is required [as opposed to incremental patch]., NSUnderlyingError=0x7f81a7806610 {Error Domain=MobileSoftwareUpdateErrorDomain Code=3 "'./System/Library/dyld/dyld_shared_cache_x86_64' did not verify and is not on the exception list." UserInfo={target_update=20D74, NSLocalizedDescription='./System/Library/dyld/dyld_shared_cache_x86_64' did not verify and is not on the exception list., NSUnderlyingError=0x7f81a7806690 {Error Domain=MobileSoftwareUpdateBOMErrorDomain Code=1 "contents of '/System/Volumes/Update/mnt1/System/Library/dyld/dyld_shared_cache_x86_64' don't match bom (29684074 vs f48e5f3e)" UserInfo={NSLocalizedDescription=contents of '/System/Volumes/Update/mnt1/System/Library/dyld/dyld_shared_cache_x86_64' don't match bom (29684074 vs f48e5f3e)}}, MSUFullReplacementRecommened=true}}, NSDebugDescription=[SUMacControllerErrorPrepareFailed=7740] Failed to perform Prepare operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_FILESYSTEM_DOESNT_VERIFY(3)_1_MobileSoftwareUpdateBOMErrorDomain:1|FullReplacementRequired|], NSLocalizedDescription=Не удалось подготовить обновление ПО. Повторите попытку.}

Can't install Mac OS 11.2 update

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