当您决定继续使用OTA时。iPhone 上的（无线）iOS 更新，您可以期待它完成而不会出现任何重大问题。苹果(Apple)值得称赞。但很少，您会遇到拒绝越过终点线的奇怪更新。
如果您遇到了卡住的 iPhone 更新，那么接下来的修复列表应该（希望）帮助您解决这个问题。
下载时iPhone更新卡住(Update Stuck)
启动 iOS 更新后，您的 iPhone 开始下载安装更新所需的系统软件文件。您将在下载过程中看到多个阶段 - 已请求(Requested)更新(Update) 、正在下载(Downloading)、准备更新(Update)和验证更新(Verifying Update)。
但是，它可能会在这些阶段的任何一个阶段卡住。发生这种情况时，至少以下修复之一应该可以帮助您重新开始。
1. 等等
iOS 更新通常需要很长时间才能下载。例如，如果您在发布日安装主要的 iOS 更新，那么考虑到 Apple 服务器上的巨大负载，您应该可以预料到这一点。再忍耐(Stay)一会儿，你可能会看到一些进展。
2. 开启/关闭飞行模式
在 iPhone 上切换飞行模式(Airplane Mode on the iPhone)然后再次关闭可以消除随机网络相关问题，并且是对大多数卡住的系统软件下载的快速修复。
只需打开iPhone 上的控制中心，然后点击(Control Center)飞行模式(Airplane Mode )图标即可将其打开。等待(Wait)至少 5 秒钟，然后再次点击将其关闭(OFF)。
3. 插入电源
即使您的 iPhone 剩余电量很多，将设备连接到电源仍然是一个好主意。这应该可以修复卡住的 iOS 更新，特别是如果它一直在努力超越下载过程的准备更新(Preparing Update)阶段。
您还应该禁用低功耗模式(disable Low Power Mode)（如果它处于活动状态），因为该功能可能会阻止您的 iPhone 以最佳方式工作。
4.更改互联网连接
卡住的 iPhone 系统软件下载可能只是 Wi-Fi 连接不稳定的结果。如果您在使用 iPhone（或连接到同一网络的其他设备）上的其他应用程序时遇到网速缓慢的问题，您可以执行以下操作：
- 续订 Wi-Fi 租约(Renew the Wi-Fi Lease)。转到设置(Settings )> Wi-Fi，然后点击Wi-Fi 连接旁边的信息图标。(Info )然后，点击续租(Renew Lease)。
- 重置 Wi-Fi 路由器(Reset the Wi-Fi router)。
- 禁用(Disable the Low Data Mode setting)Wi-Fi 连接的低数据模式设置。
- 切换到其他 Wi-Fi 网络。
5.重启iPhone
重新启动 iPhone 是解决大多数问题的常见故障排除方法，其中包括 iOS 下载卡住。通过同时按住降低音量(Volume Down)和侧面(Side )按钮（或仅在具有Touch ID的设备上的(Touch ID)侧面(Side )按钮）并关闭 设备，调出幻灯片以关闭电源提示。(slide to power off )
等待(Wait)30 秒并再次按住侧边(Side )按钮以重新启动 iPhone。然后，转到设置(Settings )>常规(General )>软件更新(Software Update)并继续更新。
6.删除更新并重新下载
有时，修复卡住的 iPhone 更新的最佳方法是删除它并重新开始。前往“设置”(Settings ) > “通用(General )” > “ iPhone 存储(iPhone Storage)” 。在显示的应用程序列表中，您应该会看到部分下载的更新文件（例如iOS 14.5）。点击它，然后点击删除更新(Delete Update)。
之后，重新访问软件更新(Software Update)屏幕以重新启动系统软件下载。
7. 使用蜂窝数据(Data)而不是Wi-Fi
如果您使用 iPhone 12 或更新机型，您可以放弃Wi-Fi并使用 5G 蜂窝数据下载 iOS 更新。转到设置(Settings )>蜂窝网络(Cellular )>蜂窝数据选项(Cellular Data Options)>数据模式(Data Mode)，然后选择允许 5G 上的更多数据(Allow More Data on 5G)。
8.释放一些空间
如果您的 iPhone 即将耗尽存储空间，您应该释放一些空间，以便更新有更多空间正常工作。
前往“设置”(Settings ) > “通用(General )” > “ iPhone 存储(iPhone Storage)”并使用屏幕中列出的建议来回收存储空间。(Recommendations )您还可以利用卸载(Offload)功能。点击(Tap)一个应用程序并选择卸载应用程序(Offload App)以删除应用程序而不删除任何相关数据或文档。此外，您可以尝试减少 iPhone 的“其他”存储空间(reducing your iPhone’s “Other” storage)。
9.重置网络设置
重置 iPhone 上的网络设置是另一个可以帮助卡住 iOS 更新的修复程序。转到设置(Settings )>常规(General )>重置(Reset )，然后选择重置网络设置(Reset Network Settings)。您必须在重置过程后手动重新连接到Wi-Fi 。
10. 通过 Finder/iTunes 更新
如果上述修复均无效，则应停止OTA。使用 Mac 上的 Finder(using Finder on a Mac)或PC 上的 iTunes(iTunes on the PC)更新和应用它。
首先将 iPhone 连接到计算机并打开Finder或 iTunes。从iTunes(Follow)窗口的左上角或Finder边栏中选择您的 iPhone。然后，选择检查更新(Check for Update)。
这应该会提示 iTunes/Finder 将最新的 iOS 更新下载到您的Mac或 PC。然后它将很快将更新安装到您的 iPhone。
安装时iPhone更新卡住(Update Stuck)
除了下载(Download)问题，您的 iPhone 在安装 iOS 更新时也可能会卡住。如果您现在正在经历这种情况，那么您必须这样做。
11. 再等等
iOS 更新往往需要很长时间才能安装。这适用于每个主要系统软件更新和大多数次要（或点）更新。
您可能已经等待了一段时间，但即使进度条出现卡住，后台也很可能有很多活动。理想情况下，您应该再等待至少 30 分钟，然后再进行下一个修复。
12. 强制重启设备
如果您等待但仍然没有看到任何进展，您应该强制重启您的 iPhone。通常，这应该会提示 iOS 更新从卡住的地方恢复。
iPhone 8 系列及更新机型(iPhone 8 Series and Newer)
一个接一个地快速按下并释放提高音量( Volume Up)按钮和降低音量(Volume Down)按钮。然后，快速按住侧边(Side )按钮。继续(Keep)按住直到屏幕变暗并且您再次看到Apple标志。
iPhone 7 系列(iPhone 7 Series)
同时按住降低音量(Volume Down)和侧面(Side )按钮。一直(Keep)按住直到设备重新启动，然后您再次看到Apple标志。
iPhone 6 系列及更早机型(iPhone 6 Series and Older)
按住主屏幕(Home )和侧边(Side )按钮。一直(Keep)按住直到Apple标志消失并再次出现。
13.进入恢复模式
如果强制重启没有帮助，并且您一直看到Apple标志（有或没有进度条），您应该强制重启您的 iPhone 并进入恢复模式(force restart your iPhone and enter Recovery Mode)。
然后，您可以使用更新(Update )选项重新安装最新版本的 iOS，而不会丢失任何数据。如果失败（可能是由于文件损坏），请选择恢复(Restore )以将设备重置为出厂设置。您将丢失 iPhone 上的所有数据，但您可以稍后通过 iCloud 或 iTunes/Finder 备份取回这些数据。
你已经更新了 iOS
卡住(Stuck)的 iPhone 更新很痛苦，但您通常可以通过一些故障排除来解决它们。在大多数情况下，只需稍等片刻即可！如果没有，上面的其他修复肯定会让那些轮子转动。
iPhone Updates Stuck? 13 Ways to Fix It
When you decide to go ahead with an O.T.A. (over-the-air) iOS update on the iPhone, you can expect it to complete without any significant issues. Apple deserves credit for that. But rarelу, you’ll come across the odd update that refuses to go over the finish line.
If you’ve come face to face with a stuck iPhone update, then the list of fixes that follow should—hopefully—help you sort that out.
iPhone Update Stuck While Downloading
After initiating an iOS update, your iPhone starts downloading the system software file needed to install the update. You’ll see multiple stages during the download process—Update Requested, Downloading, Preparing Update, and Verifying Update.
However, it can get stuck during any one of those phases. When that happens, at least one of the fixes below should help you get things moving again.
1. Just Wait
iOS updates often take a long time to download. If you’re installing a major iOS update on release day, for example, that’s something you should expect given the massive load on Apple’s servers. Stay patient for a while longer and you may see some progress.
2. Toggle Airplane Mode ON/OFF
Toggling Airplane Mode on the iPhone on and then off again eliminates random network-related issues and is a fast fix to most stuck system software downloads.
Just open the Control Center on your iPhone and tap the Airplane Mode icon to turn it ON. Wait for at least 5 seconds, and then tap again to turn it OFF.
3. Plug Into a Power Source
Even if your iPhone has lots of charge remaining, it’s still a good idea to connect the device to a power source. That should fix a stuck iOS update, especially if it keeps struggling to move beyond the Preparing Update phase of the download process.
You should also disable Low Power Mode (if it’s active) since the functionality can stop your iPhone from working optimally.
4. Change Internet Connection
A stuck iPhone system software download could just be the result of a spotty Wi-Fi connection. If you experience slow internet speeds using other apps on your iPhone (or on other devices connected to the same network), then here’s what you can do:
5. Restart iPhone
Rebooting an iPhone is a common troubleshooting fix for most issues, and that includes stuck iOS downloads. Bring up the slide to power off prompt by holding down both the Volume Down and Side buttons (or just the Side button on devices with Touch ID) and shut down the device.
Wait for 30 seconds and hold down the Side button again to restart the iPhone. Then, go to Settings > General > Software Update and resume the update.
6. Delete Update and Redownload
Sometimes, the best way to fix a stuck iPhone update is to delete it and start all over. Go to Settings > General > iPhone Storage. On the list of apps that show up, you should see the partially downloaded update file (e.g., iOS 14.5). Tap it, and then tap Delete Update.
After that, revisit the Software Update screen to re-initiate the system software download.
7. Use Cellular Data Instead of Wi-Fi
If you use an iPhone 12 or newer, you can ditch Wi-Fi and download iOS updates using 5G cellular data. Go to Settings > Cellular > Cellular Data Options > Data Mode and select Allow More Data on 5G.
8. Free Up Some Space
If your iPhone’s close to running out of storage, you should free up some space so that the update has more space to work properly.
Go to Settings > General > iPhone Storage and use the Recommendations listed within the screen to reclaim storage. You can also utilize the Offload functionality. Tap on an app and select Offload App to delete apps without removing any related data or documents. Additionally, you can try reducing your iPhone’s “Other” storage.
9. Reset Network Settings
Resetting the network settings on your iPhone is another fix that can help stuck iOS updates. Go to Settings > General > Reset and select Reset Network Settings. You must manually reconnect to Wi-Fi after the reset procedure.
10. Update via Finder/iTunes
If none of the fixes above worked, you should stop the O.T.A. update and apply it using Finder on a Mac or iTunes on the PC.
Start by connecting your iPhone to your computer and open Finder or iTunes. Follow by selecting your iPhone from the top-left of the iTunes window or the Finder sidebar. Then, select Check for Update.
That should prompt iTunes/Finder to download the latest iOS update to your Mac or PC. It will then install the update to your iPhone soon after.
iPhone Update Stuck While Installing
Download issues aside, your iPhone can also get stuck while installing an iOS update. If you’re experiencing that right now, here’s what you must do.
11. Wait Some More
iOS updates tend to take a long amount of time to install. That applies to every major system software update and for most minor (or point) updates.
You might have already waited for some time, but even though the progress bar appears stuck, there could very well be lots of activity in the background. You should ideally wait it out for at least 30 minutes more before moving on to the next fix.
12. Force-Restart Device
If you waited but still don’t see any progress, you should force-restart your iPhone. Usually, that should prompt the iOS update to resume from where it got stuck.
iPhone 8 Series and Newer
Quickly press and release the Volume Up button and the Volume Down button one after the other. Then, quickly press and hold the Side button. Keep holding until the screen goes dark and you see the Apple logo again.
iPhone 7 Series
Press and hold both the Volume Down and Side buttons. Keep holding until the device reboots, and you see the Apple logo again.
iPhone 6 Series and Older
Press and hold both the Home and Side buttons. Keep holding until the Apple logo disappears and shows up again.
13. Enter Recovery Mode
If force-restarting didn’t help and you keep seeing an Apple logo (with or without a progress bar), you should force restart your iPhone and enter Recovery Mode.
You can then use the Update option to re-install the latest version of iOS without losing any data. If that fails (possibly due to file corruption), select Restore instead to reset the device to factory settings. You will lose all data on the iPhone, but you can get that back later via an iCloud or an iTunes/Finder backup.
You’ve Updated iOS
Stuck iPhone updates are a pain, but you can usually sort them out with a fair bit of troubleshooting. In most cases, simply waiting for a moment longer is all it takes! If not, the other fixes above should definitely get those wheels turning.
