ios12.3beta2

So you’veinstalled the iOS 12 betaand, well, you’re experiencing some bugs. That’s okay, because you canquickly downgrade to the stable iOS 11.4.1.

因此，您已經安裝了iOS 12 beta ，而且，您遇到了一些錯誤。 沒關係，因為您可以快速降級到穩定的iOS 11.4.1。

讓我們從一些警告開始 (Let’s Start with a Few Warnings)

Downgrading will completely wipe your iPhone or iPad, and that can present a problem. Let’s say you didn’t follow our advice to do a full backup before installing the iOS 12 beta. In that case, if you downgrade to iOS 11, you’re looking at a full device wipe and any data you don’t have backed up in another way (like photos copied to your computer outside of iTunesor iCloud) will be erased.

降級將完全擦除您的iPhone或iPad，這可能會帶來問題。 假設您在安裝iOS 12 Beta之前沒有遵循我們的建議進行完整備份。 在這種情況下，如果您降級到iOS 11，則意味著正在擦除整個裝置，並且您沒有以其他方式備份的所有資料(例如複製到iTunes或iCloud之外的計算機上的照片)都將被刪除。

And, even if you did back up your device while it was on iOS 11,any changes made or data created on your phone between the iOS 12 beta update and the rollback will be lost.

而且，即使您確實在iOS 11上備份裝置時，在iOS 12 Beta更新和回滾之間所做的任何更改或在手機上建立的資料也將丟失。

If you were just playing around with the iOS 12 beta on a spare device, that’s not a big problem. If you installed the iOS 12 beta on your primary deviceandyou didn’t back it up first, however, you might want to consider just sticking with iOS 12 to save yourself the lost data. It should get more and more stable as Apple releases new beta updates, anyway.

如果您只是在備用裝置上玩iOS 12 Beta，那不是什麼大問題。 如果您安裝在主裝置上iOS的12 beta和你沒有備份了第一，但是，您可能要考慮只與iOS堅持12儲存自己丟失的資料。 無論如何，隨著Apple釋出新的Beta更新，它應該變得越來越穩定。

Lastly, this tutorial will only help you downgrade from the iOS 12betato iOS 11 and it will only work up until the public release of iOS 12. After that, Apple will stop signing older iOS firmware versionsand you will not be able todowngrade from iOS 12.

最後，本教程將僅幫助您從iOS 12 beta降級到iOS 11，並且僅在iOS 12公開發布之前可用。在那之後，Apple將停止對較舊的iOS韌體版本進行簽名，並且您將無法降級。從iOS 12。

Those cautionsaside, let’s jump right into the pretty easy rollback process.

除了這些警告，讓我們直接進入非常簡單的回滾過程。

你需要什麼 (What You Need)

To follow along today, you need just a few things. You’ll need your device, a USB data cable for said device, an up-to-date copy of iTunes, and you’ll need to download the appropriate iPSW file for your device. For the unfamiliar, iPSW files are the firmware files for iOS devices. Using an iPSW file to reset or restore your device is like performing a complete factory reset.

要跟隨今天，您只需要注意幾件事。 您將需要您的裝置，用於該裝置的USB資料線，iTunes的最新副本，並且需要為該裝置下載適當的iPSW檔案。 對於不熟悉的人，iPSW檔案是iOS裝置的韌體檔案。 使用iPSW檔案重置或還原裝置就像執行完整的出廠重置一樣。

You can get the latest iPSW file for your device on a website like IPSW.me. This website links to the actual iPSW files on Apple’s servers, so you know your download is coming straight from Apple. Just select your device, and then download the latest signed iPSW file for it. You can only use signed iPSW files. At the time of writing, the latest version was iOS 11.4.1.

您可以在類似IPSW.me的網站上獲取裝置的最新iPSW檔案。 該網站連結到Apple伺服器上的實際iPSW檔案，因此您知道您的下載直接來自Apple。 只需選擇您的裝置，然後為其下載最新的簽名iPSW檔案。 您只能使用簽名的iPSW檔案。 在撰寫本文時，最新版本是iOS 11.4.1。

Unsure exactly which device you have? Check the model number on the case and usethis iOS device listto make sure.

不確定到底擁有哪種裝置？ 檢查機殼上的型號並使用此iOS裝置列表進行確認。

After carefully confirming which iPSW file you need for your device, download the file to your computer and head on to the next section.

在仔細確認裝置所需的iPSW檔案之後，將檔案下載到計算機上並轉到下一部分。

如何將裝置回滾到iOS 11 (How to Roll Your Device Back to iOS 11)

First,if you’ve enabledthe “Find My iPhone” featurefor your iPhone or iPad, you will need to turn that feature off. You must do this from the iPhone or iPad itself.Head to Settings > [Your Name] > iCloud > Find My iPhone (or Find My iPad) and make sure the feature is turned off.

首先，如果您為iPhone或iPad啟用了“查詢我的iPhone”功能，則需要關閉該功能。 您必須從iPhone或iPad本身執行此操作。 轉到設定> [您的名稱]> iCloud>查詢我的iPhone(或查詢我的iPad)，並確保該功能已關閉。

With the iPSW file in hand, plug your iOS device into your PC or Mac with the USB cable, and then fire up iTunes. Inside iTunes, click on the device icon (located in the upper left corner and highlighted in the screenshot below).

手持iPSW檔案後，使用USB電纜將iOS裝置插入PC或Mac，然後啟動iTunes。 在iTunes中，單擊裝置圖示(位於左上角，並在下面的螢幕快照中突出顯示)。

Within the device’s “Summary” page (the default view), locate the “Restore [Device Name]” button. Pressand hold the Optionkey (Mac) or Shift key (Windows) and click the button. Youmustpress the keyboard key while clicking the button in order to load the file browserto select a custom restore file. If you don’t, iTunes will only allow you to select from local backups you’ve made.

在裝置的“摘要”頁面(預設檢視)中，找到“恢復[裝置名稱]”按鈕。 按住Option鍵(Mac)或Shift鍵(Windows)，然後單擊按鈕。 您必須在單擊按鈕的同時按下鍵盤鍵，才能載入檔案瀏覽器以選擇自定義還原檔案。 如果您不這樣做，iTunes將僅允許您從製作的本地備份中進行選擇。

When you click the Restore button, youwon’tbe prompted to back up your device, get any data off it, or warned in any fashion. The presumption is that, because you know thissuper secret key combination, you know what you’re doing.

單擊“還原”按鈕時，不會提示您備份裝置，獲取任何資料或以任何方式發出警告。 假設是，因為您知道此超級金鑰組合，所以您知道自己在做什麼。

In the file browserthat pops up, navigate to the iPSW file for your device in the location you saved the download. Select it (if you have multiple devices, make sure you select the correct one for the device you’re currently wiping and restoring), and then click“Open” to start the process.

在彈出的檔案瀏覽器中，在儲存下載的位置導航到裝置的iPSW檔案。 選擇它(如果有多個裝置，請確保為當前要擦除和還原的裝置選擇正確的裝置)，然後單擊“開啟”以開始該過程。

Click “Restore” to continue and erase the contents of your iPhone or iPad.

單擊“還原”以繼續並擦除iPhone或iPad的內容。

If you see an error message instead, you probably downloaded the wrong iPSW file for your device.

如果看到錯誤訊息，則可能是裝置下載了錯誤的iPSW檔案。

Once you click that “Restore” button, it’s go time: your iOS device will be wiped and the iOS software will be downgraded from iOS 12 Beta to the latest version of iOS 11. When the process is finished, your device will boot back up as if you’d just turned it on for the first time—welcome screen and all. At that point, you can either start with a totally fresh copy of iOS 11or you can copy your old iOS 11backup (if you made one) from iTunes or iCloud.

單擊該“恢復”按鈕後，就可以了：您的iOS裝置將被擦除，iOS軟體將從iOS 12 Beta降級到最新版本的iOS11。完成該過程後，您的裝置將重新啟動就像您是第一次開啟它一樣-歡迎螢幕以及所有功能。 此時，您可以從全新的iOS 11副本開始，也可以從iTunes或iCloud複製舊的iOS 11備份(如果已建立)。

If you made a backup in iTunes, iTunes will ask you if you want to restore that backup to your device right after it finishes installing iOS 11. Select the backup and click “Continue” to do so.

如果您在iTunes中進行了備份，iTunes將在完成安裝iOS 11後詢問您是否要將備份還原到裝置上。選擇備份，然後單擊“繼續”。

At this point, be it with a fresh install or your old iOS 11 backup restored, you’re back on iOS 11 and can stay there as long as you want. However, you’ll probably want to upgrade to iOS 12 when the final, stable version is released later in 2018.

此時，無論是全新安裝還是還原了舊的iOS 11備份，您都可以使用iOS 11，並可以在其中停留任意長時間。 但是，您可能要在2018年晚些時候釋出最終的穩定版本時升級到iOS 12。

翻譯自: https://www.howtogeek.com/359773/how-to-roll-back-to-ios-11-if-you’re-using-the-ios-12-beta/

ios12.3beta2