As you try to update to macOS Big Sur, you'll find there are a mess of macOS update stuck problems that stop you from moving on.
— Connect your iPad to a PC (Windows or Mac) with iTunes installed, via USB and your sync/charge cable. If you are prompted immediately to update your iOS software you should choose to Cancel and not do that right away. — Make sure you have backed up or synced all your important data, photos, music, contacts etc. Jan 19, 2020 If the update does not complete, your computer may seem stuck or frozen, for an extended time, try to restart your computer by pressing and holding the power button on your Mac for up to 10 seconds. If you have any external hard drives or peripherals connected to your Mac, try removing them. And try to update now. Feb 02, 2021 Useful Solutions to 'Mac Won’t Restart After Mac Update' If your Mac powered device isn’t booting up after a recent update, there might be some issues with the device or the update. If Mac stuck on restart after update make sure you follow the solutions mentioned below before you take it to an engineer or service center-Solution 1. If you have a problem with your Mac's latest update, chances are the problems are going to show up when you try to boot up the computer. You may get a message that reads 'A critical software update is required for your Mac, but an error was encountered while installing this update. Your Mac can't be used until this update is installed.'
Each time a new Mac desktop operating system updates, a flood of Mac users would rush to download and install the macOS. There is no exception for macOS Big Sur, which has just been released as a free upgrade for users. It features with many significant changes or redesigns in Big Sur compared to Catalina, including the new design, Messages new features, faster Safari, enhanced apps, etc.
Many users reported that macOS download stuck, installation failed, an error occurred while installing this update, installation stuck on grey/space screen or failed issue when they attempt to get it upgraded. Concerning such miscellaneous macOS Big Sur update stuck issues, this article covers a collection of macOS Big Sur update failed problems and solutions.
Read more: macOS Big Sur update guide and quick fixes to any Big Sur update problem.
Lest Mac Update Stuck, Back Up Your Mac Data Now!
To prevent the unexpected macOS Big Sur update problems, you're suggested to back up your Mac files with MacX MediaTrans
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What Should do Before Upgrading to macOS Big Sur?
Although the every new macOS upgrade comes with certain exciting features, you need to know if your Mac computer can safely be updated (take Big Sur as an example). If you pay no attention to the details, macOS Big Sur update problems come with you for sure, probably your Mac update stuck or Mac failed update won't boot. Here are some of the things that you should look for before you upgrade to the new update.
1.Check compatibility. Big Sur requires any of the following Mac models: iMac; MacBook Pro; MacBook Air; MacBook; Mac Pro; Mac Mini.
2.Check minimum software and hardware requirements. You should have OS X Mountain Lion 10.8 or later. It requires at least 35.5GB of storage space to perform the Big Sur upgrade from macOS Sierra or later, 44.5GB from an earlier release.
3.Backup your Mac. To avoid any possible macOS Big Sur update problems, making a backup of your Mac comes essential. You can backup Mac with Time Backup Machine, iCloud, iTunes, or any other third-party Mac backup tools like MacX MediaTrans.
Common macOS Big Sur Update Stuck Problems & How to Fix Them
1. Big Sur Update Download Stuck
As you attempt to download macOS Big Sur installer, you may be noticed that 'Installation requires downloading important content. That content can't be downloaded at this time. Try again later.', or 'An error has occurred.' Big Sur download times are slow this year and are always failing. It's exceedingly annoying, but there is no way to bypass this step for macOS update.

Usually Mac update download failed error is originated that you download the package from somewhere other than Mac App Store or you just downloaded the Beta version. So you need to go to Mac App Store and download the official macOS Big Sur instead to fix it. Overloaded Apple's server is also a main cause.
2. macOS Big Sur Installation Failed, An Error Occurred
Installation failed, an error occurred while installing this update while upgrading to Big Sur. It got to about 10% or halfway and failed, some users cannot even reconnect. Many users are getting the same error. The macOS Big Sur installation failed error is properly caused by overloaded Apple's server, there are tons of users rushing to download now. You can check on the status on Apple's support system status page. Wait for a while and try again.
Apple resolved the issue, however, some users still get macOS Big Sur installation stuck message. Read more: What to Do If macOS Big Sur Installation Stuck/Frozen/Slow
3. Failed to Update macOS Owing to Insufficient Storage
You know, Big Sur update requires at least 2GB RAM and 14.3GB available storage. So if your Mac computer almost ran out of the storage space, your macOS update stuck at the beginning for sure. To make sure how much space your Mac has left, from the Apple menu, select About This Mac >More Info >Storage.
If your Mac update failed definitely owing to the storage space, the only thing you need to do is to free up the space on Mac. Just make it done by uninstalling unused applications and app caches, deleting old devices backups, deleting unnecessary media files from iTunes, emptying trash can, clearing temporary files, compressing large files to smaller size and so on.
4. macOS Big Sur Update Freezes on Firmware Confirmation
The inability to verify firmware error is the mainly reported macOS update problems. Many users said as they try to update to Big Sur, the installer noticed that there is an error checking the firmware. Actually, it turns out to be a corrupted EFI partition. It's an MS-DOS formatted little slice that's needed when updating the computer firmware.
You can boot into rescue mode, checked the partitions with 'diskutil list' and 'verifydisk' (terminal), and fixed the EFI partition 'diskutil repairdisk (your EFI disk/partition) '.
5. Big Sur Update Installation Stuck with DiskManagement Error
After downloading the new macOS for my MacBook pro (mid-2012) with HDD, the computer restarted but continues to fail during the installation. The error I keep getting is . I completed a disk repair but no errors popped up there, so I assume nothing is wrong with the drive. I tried to reinstall macOS from recovery mode, but I continue getting this same error. Does anybody know how to fix this problem? - Apple Support
As the DiskManagement Error happens, you can try to fix it within the following steps: 1. Start in recovery with ALT+CMD+R > 2. Go to disk utility > 3. Convert the volume to APFS > 4. Restart the installation
6. Big Sur Update Stuck on Gray Screen
Software Update Not Showing Up On Mac Computer
It's not always a gray screen, as strange as that may sound. The 'gray screen' problem can also manifest itself as a black screen, space screen with Apple logo, a spinning gear, a spinning globe, or a prohibitory sign. Mac update stuck on gray screen problem can occue right after you start or restart your Mac. It may be caused by a bad peripheral or peripheral cable, RAM issue, Drive issue or whatever.
Before you start to fix the macOS update stuck on gray screen problem, you need make sure what's the cause. Then you can disconnect all external peripherals, remove all but the minimum amount of RAM from your Mac, use Single-User mode to repair a Startup Drive. I think the problem will be fixed.

After you have fixed the macOS Big Sur update stuck problem, you can enjoy the salient new features of Big Sur. But at the same time, some new troubles might trouble you as well, such as like macOS Big Sur running slow, some apps get damaged or non-Apple Apps cannot be opened, Safari crashed, Mac gets overheated, or the Big Sur keeps logging you out etc. So think twice before you upgrade to macOS Big Sur, and if you encounter any Big Sur update problems, pick the macOS update problems and fixes as a reference.
Make A Backup of Your Mac with MacX MediaTrans!
MacX MediaTrans, an awesome data transfer tool between Mac and iOS, allowing you to transfer significant Mac files, like video, 4k photos, music files, videos, ringtone etc. so as to make a backup of Mac data and free up more space on MacBook Pro/Air, iMac etc.
Part 2: How to Update to iOS 14 on iPhone iPad Easily and Quickly

* First, this guide has two parts: how to upgrade to iOS 14 and how to fix iOS 14 update problems of any kind. If you already know the process but encounter problems, check Part 1. Otherwise, stay with this part and check Part 1 if you unfortunately get any iOS 14 update errors.
* To avoid any unnecessary problems, first check if iOS 14 is available for your device, namely you need an iPhone 6S or later.
Software Update Not Showing Up On Mac Laptop
Step 1: iOS 14 Update - Backup iOS Data
To backup data on iPhone, iPad and iPod for iOS 14 updating, there are three ways:
* iCloud backup: backup camera roll, accounts, documents, and settings and won't cover jailbreak tweaks and apps. If your live photos or 4K pictures are larger than 5GB, you need to pay for extra storage.
* iTunes backup: make a full copy on computer. It won't backup non-iTunes purchased media and takes quite a long time to perform the full backup.

* Third-party backup tool: e.g. MacX MediaTrans, it freely backups music, photos, videos, movies, TV shows, books, iTunes DRM-protected purchases and more (including jailbroken files) by drag and drop. Backup whatever you think important in a flash.
Get the one-click backup tool:
Free download Mac version
Free download Windows version
Step 2: Upgrade to iOS 14- Download and Install iOS 14
After you backup iPhone to Mac to avoid data loss problem, now let's see how to download and install iOS 14 on iPhone without errors. Of course, you can skip this part if you have the experience to download and install iOS 13, similar.
* 1 Update iDevices Over-the-air
Plug in iDevices and connect to Wi-Fi. Tap Settings > General > Software Update > Download and Install. Note: 1, this way is easier; 2, iOS 14 OTA update may take a long time as it requires Wi-Fi internet; 3, there are users reporting iDevices bricking problems during iOS 14 update OTA; 4, jailbroken iPhone can't follow this way.
* 2 How to upgrade to iOS 14 via iTunes
Connect iPhone iPad to computer > open iTunes on computer > click device icon > Check for Update > Download and Update> Agree the Terms and Conditions. This way is faster than iTunes 12 OTA update and apply to jailbroken iPhone iPad.
Author: Abby Poole | Updated on June 19, 2020