Malware or virus deleted the crucial system files.The update of macOS Big Sur or Catalina brings certain incompatibility problem (between Apple default apps and the OS) or unsolved bugs.Applicable for macOS Big Sur and Catalinaįree Download Why Mac Stuck on Login Screen after Update?.5 recovery modes for different situations.Get back files from mac internal and external hard drive (SD, USB, etc.).Support recovering data in 200+ formats (audio, video, image, docs, etc.).Recover files missing or lost due to system upgrade/downgrade,etc.I did not have to boot into the system with a fresh account to establish ownership. My important note is that the problem is not saved in the backup. Still in the installation interface, I migrated from the backup, and was prompted to enter a secure password, enable FileVault, and allow reset via Apple ID. I did a Time Machine backup to an external drive, erased the SSD Device, and reinstalled the current beta. This kept my account from getting a secure token for the device, preventing me from doing GUI updates, and enabling FileVault. I may have erased each partition individually. I don’t think that I erased the entire drive before I restored. I messed up because Disk Utility now seems to default to Show All Volumes, instead of Show All Devices. When I got the new one, I had to setup, enroll in the beta, and then try to erase and migrate via Thunderbolt.

I wanted to let you know how I resolved my issue with this: Libc++abi: terminating with uncaught exception of type NSException Now Beta 4 comes along and neither works.

Macbook pro os update failed