Cannot update and install latest macOS Sierra 10.12.1 in your Mac computer? Don't worry. Here in this article, we'll offer you effective methods to assist you fixing complex macOS Sierra update error such as fail to download or update stuck issue in Mac. You can simply follow below offered steps and solutions to fix this issue with ease now.
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Now let's follow to update and install macOS Sierra 10.12.1 in Mac computer without any obstacles or losing any data now.
Step 1. Backup important Mac data in advance
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In order to avoid unexpected data loss error or problems while installing new macOS Sierra in Mac, it's highly necessary to create data backups in advance.
You may directly apply Time Machine as a free tool to full backup your important Mac data with simple clicks.
If you don't have a backups and lost some data while installing new macOS Sierra update, you can try professional Mac data recovery software to get all lost data back. Step 2. Fix macOS Sierra fail to download or 'An error has occurred' issue
If your Mac shows a error message that 'An error has occurred' or 'Failed to Download' while you are trying to downloading a new update for macOS Sierra. And this has become a common issue that many users have to face while upgrading Mac to a new operating system. And you may follow below tips to fix this issue:
Reboot Mac and retry to download a new macOS Sierra update 10.12.1:
Then the new update of macOS Sierra 10.12.1 will be downloaded automatically for you. Then you can try to install the latest macOS update in Mac computer now. If you get stuck or frozen while installing macOS Sierra 10.12.1, you can jump to Step 3 to find solution.
Step 3. Solve macOS Sierra update stuck issue or install freeze error
If your Mac computer gets stuck or freezes up while installing macOS Sierra 10.12.1, don't worry. You may try below tips to fix this issue with ease now:
Hold Power till Mac shuts down > Turn Mac on and hold Shift key > Release Shift when Apple logo appears > Then Mac shall be booted into the Safe Mode.
Step 4. Download and install macOS Sierra 10.12.1 update
Now you can continue to download and install macOS Sierra 10.12.1 in Mac.
How? You can try to get a update in Mac by the follow clicks:
Click Apple Menu > Select App Store > Click Update next to macOS Sierra in the Update section.
Aug 14, 2020. Aug 12, 2020. Aug 31, 2020. Sep 05, 2020. Parallels desktop 10 for mac. Feb 19, 2014.
Or you can directly download it by click below link:
Download macOS Sierra 10.12.1 Update
Then you can run macOS Sierra 10.12.1 update and follow the on-screen instruction to install the new update in Mac computer with ease now.
And don't worry about losing any data if you have created backups in Step 1. If you don't have any backups and lose data while installing macOS Sierra 10.12.1, don't worry. Next we'll offer you effective tip to restore lost data due to macOS Sierra 10.12.1 update. Tip: Restore lost data after macOS Sierra 10.12.1 update
Here we'd like to recommend you try professional Mac data recovery software - EaseUS Data Recovery Wizard for Mac which fully supports all macOS systems including the newest macOS Sierra 10.12.1, El Capitan, Yosemite etc. It allows you to restore all lost data due to macOS update or other reasons within 3 steps.
Just apply this software and follow this tutorial to restore files on Mac now.
Available only on Mac computers that have the Apple T2 Security Chip, Startup Security Utility offers three features to help secure your Mac against unauthorized access: Firmware password protection, Secure Boot, and External Boot.
To open Startup Security Utility:
Firmware password protectionWebsite Is Not Secure Error
Use a firmware password to prevent anyone who doesn't have the password from starting up from a disk other than your designated startup disk. To set a firmware password, click Turn On Firmware Password, then follow the onscreen instructions. Learn more about firmware passwords.
You can also use External Boot to prevent even those who know the firmware password from starting up from external media.
![]() Secure Boot
Use this feature to make sure that your Mac starts up only from a legitimate, trusted operating system. Learn more about Secure Boot.
External Boot
Use this feature to control whether your Mac can start up from an external hard drive, thumb drive, or other external media. The default and most secure setting is ”Disallow booting from external media.” When this setting is selected, your Mac can't be made to start up from any external media:
Secure Download Manager Mac Error Windows 7
To allow your Mac to use an external startup disk:
Secure Download Manager Mac Error Windows 10
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