Ios 9

iOS 9 marked the first major version of the iPhone & iPad software that Apple opened up for public beta testing after a similar trial run with iOS 8.3 last year. As many users have sầu noticed, Apple’s public beta program is continuing with the upcoming iOS 9.1 release available as an OTA (over-the-air) update for non-developer testers, but many users will surely want lớn hop off the beta train & onlớn the stable release cycle with today’s iOS 9.0 release.

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Several readers have already asked about downgrading from the iOS 9.1 public beta to today’s iOS 9.0 release, & while it’s possible it does come at a cost: potentially losing some important data. If moving from iOS 9.1 public or even dev beta lớn today’s official iOS 9.0 release is worth it for you, read on for a detailed guide for doing just that.

Step 1: Ensure iCloud Is Backing Up and Syncing

While there doesn’t seem to lớn be an official path from iOS 9.1 public beta to today’s iOS 9.0 release that keeps all of your data intact, iCloud is mostly version-agnostic in that it usually syncs & backs up important data like contacts & notes for use on older versions of iOS. Using the iOS device that you plan khổng lồ downgrade, go lớn the Settings ứng dụng then iCloud pane to ensure important information lượt thích Contacts, Reminders, và Notes are all toggled on if you plan on keeping this information.


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Likely due to privacy concerns, Apple has not enabled syncing data from the Health and Activity apps through iCloud so expect khổng lồ chiến bại this information if downgrading. Backing up to iCloud does preserve sầu Health and Activity, but you won’t be able to lớn restore lớn iOS 9.0 using your iOS 9.1 backup unfortunately. Still, I recommkết thúc creating a full iCloud backup just in case you have sầu second thoughts after moving down khổng lồ iOS 9.0 and want to lớn recover your data with iOS 9.1. While connected to lớn power và on a Wi-Fi Internet connection, go to lớn Settings > iCloud > Backup and ensure iCloud Backup is toggled on. Then tap Bachồng Up Now to begin a full backup lớn iCloud.

Step 2: Disable Find My iPhone/iPad/iPod touch

While you’re in Settings > iCloud, you’ll want to disable Activation Lock in iOS 9.1 lớn save some time when restoring khổng lồ iOS 9.0. Do this by going to Settings > iCloud > Find My iPhone/iPad/iPod touch (depending on which device you’re using) and toggling off Find My iPhone/iPad/iPod touch which should prompt you for your Apple ID và password used for iCloud.

Note: this may differ from your App Store password if you use a separate account for iCloud & purchases.

Step 3: Backup Purchases and Data lớn iTunes

Now that we have a few safety nets in place, it’s time to connect your iOS device to iTunes on your Mac or PC using your charging cable và put up a few more before downgrading from iOS 9.1 to iOS 9.0. After plugging in your iOS device, you may have to give sầu your computer và device permission lớn “trust” each other, then clichồng the icon in the top left corner of iTunes for managing your device.

From here you can create a local backup khổng lồ iTunes & transfer any purchases not already saved to your computer. Even if your device is phối khổng lồ backup lớn iCloud, you can still choose to lớn bởi vì a manual backup here. If you opt lớn encrypt your backup và protect that tệp tin with a password, most passwords from iOS will remain intact if you decide to restore khổng lồ your iOS 9.1 backup in the future.

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This process may take several minutes, especially if you opt lớn transfer any purchases from your iOS device to lớn your Mac or PC using iTunes. Note that iTunes will need khổng lồ be authorized with the same tài khoản used on your iOS device before transferring purchases.

Step 4: Put iOS Device in Recovery Mode

Now that you have a couple backups in place in case anything goes wrong, it’s time khổng lồ downgrade from iOS 9.1 to lớn iOS 9.0. iTunes doesn’t allow devices to lớn easily rollbaông chồng from a higher version of iOS khổng lồ a previous release, so you’ll need to first put your device into recovery mode. Apple offers a guide for putting a device into lớn recovery mode, but it boils down lớn four steps:

Turn off your device & leave it off.Plug in your device’s USB cable khổng lồ a computer with iTunes.Hold down the Home button on your device as you connect the USB cable. Keep holding down the trang chủ button until you see the Connect to iTunes screen.When you see , release the Home button. If you don’t see this screen, try steps 1 through 3 again.

Step 5: Restore iOS Device khổng lồ Factory Settings

Once your device is in Recovery Mode và connected to lớn iTunes, you should see a prompt to Restore & Update. Following this prompt will show you the lademo official version of iOS, specifically iOS 9.0 in this case, then begin downloading the full operating system after you follow the on-screen prompts.

You can follow the download progress in the upper right hvà corner for an estimated time before the install begins.

Once iOS has finished downloading, your iOS device will begin installing the operating system. You’ll notice a progress bar beneath the Apple logo on your device’s display while iTunes says Restoring iPhone/iPad/iPod touch Software/Firmware.

Next you’ll notice iTunes no longer displays your device as it completes one more cycle of fulfilling a progress bar after a restart. Upon rebooting, iTunes may still prompt you khổng lồ activate your device

Step 6: Restore iOS Device From Non-iOS 9.1 Backup or Set Up As New

Once your iOS device is wiped clean và restored to iOS 9.0, you can either choose to thiết lập your device as new or restore nội dung và settings from an iTunes or iCloud backup saved from iOS 9.0 or earlier. Welcome back to iOS 9.0.

Backups from iOS 9.1 will not be compatible và are only used for returning lớn iOS 9.1. Using your computer, iTunes will offer the option to lớn restore khổng lồ a previous backup, or you can start the setup process on your device lớn choose restoring through iCloud if you have sầu a compatible backup.

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Whichever route you take, restoring or starting clean, you can still sign in with iCloud to bring back the information it syncs including contacts và notes. The downside here is that not restoring will erase any Health and Activity data not present in an older backup or completely if you start fresh. chú ý also that many apps including some games will đại bại data when setting up as new or using an older backup.

Alternatively: Await Official iOS 9.1 Release Later This Fall

If you’ve sầu already updated to iOS 9.1 public beta và decide that losing data isn’t worth the hassle, Apple’s official path for public beta testers seems to lớn be this: continue to lớn thử nghiệm future iOS 9.1 releases on your device, then update khổng lồ iOS 9.1’s official release when it comes later this fall. There’s no exact date for when iOS 9.1 will be available, but it’s likely it will arrive with the ipad Pro which is shipping sometime in November. Have sầu anything khổng lồ add lớn this tutorial? Let us know below in the comments!


Chuyên mục: Công Nghệ 4.0