Failed to update macOS Big Sur from 11.5.2 to 11.6
I got my MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports) running 11.5.2 and tried to update to the latest version 11.6 and it failed. The GUI didn't give much information, so I tried to do it from the command line and got the following error message:
softwareupdate -i -a
Software Update Tool
Finding available software
Downloading macOS Big Sur 11.6
Downloading: 100.00%
Failed to download & prepare update: Error Domain=SUMacControllerError Code=7740 "[SUMacControllerErrorPrepareFailed=7740] Failed to perform Prepare operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_BRIDGEOS_PERSONALIZATION_FAILURE(44)_1_OSPErrorDomain:201_2_AuthInstallErrorDomain:14]" UserInfo={NSUnderlyingError=0x7f9b73b0c9c0 {Error Domain=MobileSoftwareUpdateErrorDomain Code=44 "bridgeOS personalization failed" UserInfo={target_update=20G165, NSLocalizedDescription=bridgeOS personalization failed, NSUnderlyingError=0x7f9b73b0bb90 {Error Domain=OSPErrorDomain Code=201 "An error occurred during personalization." UserInfo={NSLocalizedDescription=An error occurred during personalization., NSUnderlyingError=0x7f9b73b0bf90 {Error Domain=AuthInstallErrorDomain Code=14 "(null)"}}}}}, SUMacControllerErrorIndicationsMask=0, NSDebugDescription=[SUMacControllerErrorPrepareFailed=7740] Failed to perform Prepare operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_BRIDGEOS_PERSONALIZATION_FAILURE(44)_1_OSPErrorDomain:201_2_AuthInstallErrorDomain:14], NSLocalizedDescription=Failed to prepare the software update. Please try again.}
This is not my first time that I got an issue to update macOS Big Sur.
Actually I did upgrade macOS from 11.3.1 to 11.5.2 last week and I faced a similar issue with following an error message:
softwareupdate -i -a
Software Update Tool
Finding available software
Downloading macOS Big Sur 11.5.2
Downloading: 100.00%
Failed to download & prepare update: Error Domain=SUMacControllerError Code=7740 "[SUMacControllerErrorPrepareFailed=7740] Failed to perform Prepare operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_BRIDGEOS_PERSONALIZATION_FAILURE(44)_1_OSPErrorDomain:201_2_AuthInstallErrorDomain:14]" UserInfo={NSUnderlyingError=0x7faf1860e7d0 {Error Domain=MobileSoftwareUpdateErrorDomain Code=44 "bridgeOS personalization failed" UserInfo={target_update=20G95, NSLocalizedDescription=bridgeOS personalization failed, NSUnderlyingError=0x7faf1860ad20 {Error Domain=OSPErrorDomain Code=201 "An error occurred during personalization." UserInfo={NSLocalizedDescription=An error occurred during personalization., NSUnderlyingError=0x7faf18610b00 {Error Domain=AuthInstallErrorDomain Code=14 "(null)"}}}}}, SUMacControllerErrorIndicationsMask=0, NSDebugDescription=[SUMacControllerErrorPrepareFailed=7740] Failed to perform Prepare operation: [MobileSoftwareUpdateErrorDomain(MSU):MSU_ERR_BRIDGEOS_PERSONALIZATION_FAILURE(44)_1_OSPErrorDomain:201_2_AuthInstallErrorDomain:14], NSLocalizedDescription=Failed to prepare the software update. Please try again.}.
I cannot not do anything else but backing up data, wiping out my hard drive and did the fresh full installation of macOS 11.5.2 by rebooting and press "Command (⌘)-R" to re-install Macbook from the Internet then I could get v11.5.2 installed and then restored my data from the backup and re-installed the rest of apps which is obviously far from practical solutions to do it every single update like this....
If I understood correctly, the macOS 11.6 won't provide a full installation yet as of now. At least, I found macOS Big Sur from the Mac App Store is still 11.5.2; finding out from the Internet and it has been discussed that only delta update of 11.6 is available because it's intended to be security update...
1) Anyone has got any similar issue as me?
2) If so, did you find any way how to fix this issue ?
Regards,
Sunsern
MacBook Pro (2020 and later)
