How to Update to iOS 15
Як абнавіць iOS 15
iOS 15 Update Problem
Праблемы з абнаўленнем iOS 15
How to Downgrade
Як панізіць

Пераход да iOS 15: як гэта зрабіць лёгка і бяспечна

• Падрыхтоўка да паніжэння
• Як паменшыць версію iOS 15
• Выбар інструмента для пераўтварэння iOS 15
• Выпраўленні праблем з паніжэннем
• Частыя пытанні аб вяртанні iOS 15

Частка 1. Ці добра вы падрыхтаваныя да iOS 15 downgrade?

Апошняе абнаўленне iOS было выпушчана, але карыстальнікі ўжо скардзяцца на некаторыя збоі. Каб пераадолець гэтыя праблемы, вы можаце падумаць аб паверсе iOS 15. Аднак вам варта зрабіць крок назад і зразумець яго наступствы. Напрыклад, паніжэнне можа сцерці ўсе існуючыя даныя на вашым тэлефоне, уключаючы фатаграфіі, праграмы, кантакты і г.д. Такім чынам, важна прыняць неабходныя меры засцярогі, перш чым адмяняць абнаўленне iOS 15 на iPhone.

1.1 Зрабіце рэзервовую копію прылады

Гэта самае важнае, пра што вы павінны паклапаціцца, перш чым панізіць iOS 15 да папярэдняй стабільнай версіі. Калі мы паніжаем версію прылады iOS, яна можа скончыць выдаленнем усіх захаваных на ім даных. Ад мультымедыйных файлаў да даных прыкладанняў - у выніку вы можаце страціць увесь існуючы кантэнт на вашым тэлефоне. Такім чынам, лепшы спосаб даведацца, як перайсці з iOS 15 на стабільную версію, - гэта зрабіць рэзервовую копію вашага тэлефона. Такім чынам, пасля заканчэння паніжэння, вы можаце лёгка вярнуць важныя даныя, аднавіўшы іх рэзервовую копію.
Рэзервовае капіраванне iDevice з Dr.Fone
  • 1Падключыце свой iPhone або iPad да кампутара.
  • 2Выберыце тып даных або абярыце ўсе.
  • 3Націсніце на кнопку «Рэзервовае капіраванне», каб лакальна капіраваць дадзеныя прылады.
Унікальныя асаблівасці:
  • •Рэзервовае капіраванне ўсёй прылады iOS, уключаючы яго кантакты, журналы выклікаў, паведамленні, фатаграфіі, відэа і г.д.
  • •Рэзервовае капіраванне і аднаўленне вашых даных з адной прылады на іншую (або з адной версіі iOS на іншую) без праблем з сумяшчальнасцю.
  • •Вымайце існуючую рэзервовую копію iCloud або iTunes і аднавіце яе на прыладзе па нашым выбары.
  • •Папярэдні прагляд даных з файла рэзервовай копіі, каб аднавіць іх выбарачна. Існуючыя даныя будуць захаваны падчас аднаўлення рэзервовай копіі.
Спампаваць Спампаваць

Рэзервовае капіраванне iDevice з дапамогай iTunes

  • 1Запусціце абноўленую версію iTunes і падключыце да яе прыладу iOS.
  • 2Перайдзіце на ўкладку «Зводка» і знайдзіце адпаведны варыянт на ўкладцы «Рэзервовыя копіі».
  • 3Націсніце на кнопку «Створыць рэзервовую копію зараз», каб захаваць рэзервовую копію вашага прылады.
Варта адзначыць:
  • •iTunes не можа аднавіць рэзервовую копію больш высокай версіі ніжняй версіі. Такім чынам, вы павінны зрабіць рэзервовую копію вашага прылады, перш чым абнавіць яго да iOS 15.
  • •Няма магчымасці для папярэдняга прагляду даных і выбарачнага іх аднаўлення.
  • •iTunes выдаляе існуючыя даныя на вашым iPhone, аднаўляючы рэзервовую копію.
Атрымаць iTunes зараз

1.2 Зразумейце ліміт часу для пераўтварэння iOS

Увесь працэс паніжэння версіі iOS адчувальны да часу, пра што многія карыстальнікі не ведаюць. Пагаворым пра гэта падрабязна.

  • Калі ў вас усталявана бэта-версія iOS, вы можаце панізіць бэта-версію iOS да папярэдняй стабільнай версіі ў любы час (да выхаду афіцыйнай агульнадаступнай версіі iOS).
  • Пасля выпуску стабільнай агульнадаступнай версіі iOS у вас ёсць толькі 14 дзён, каб перайсці на папярэднюю версію iOS.

1.3 Выберыце правільную версію для вяртання з iOS 15

У ідэале вы можаце панізіць iOS 15 толькі да папярэдняй стабільнай версіі. Напрыклад, калі вы хочаце панізіць iOS 15, вы можаце вярнуцца толькі да папярэдняй стабільнай версіі, падпісанай Apple. Вы можаце наведаць IPSW.me , каб праверыць, ці даступная сумяшчальная прашыўка.

1.4 Ведаць, як перайсці да версіі, якая больш не падпісаная Apple (пры неабходнасці)

Як вы ведаеце, каб паменшыць версію iOS 15, вам трэба зрабіць неабходныя крокі на працягу 14 дзён пасля яе афіцыйнага выпуску. Таксама карыстальнікі могуць адкатвацца толькі да папярэдняй стабільнай версіі. Аднак, калі вы прайшлі 14-дзённы тэрмін і хочаце перайсці да версіі, якая больш не падпісаная Apple, вам трэба выкарыстоўваць інструмент трэцяга боку. Скарыстаўшыся дапамогай такіх інструментаў, як TinyUmbrella або TaigOne Downgrader, вы можаце ўсталяваць любую версію iOS, якая падтрымліваецца на прыладзе. Яны імітуюць подпіс Apple, дазваляючы нам усталёўваць персаналізаваную прашыўку (версія iOS) на iDevices.

Хоць увесь працэс быў бы даволі тэхнічным, і ён можа не прынесці станоўчых вынікаў. Паколькі гэтыя інструменты іншых вытворцаў не падтрымліваюцца Apple, вам трэба зрабіць джейлбрейк на прыладзе, каб зрабіць гэта. Гэта не рэкамендуецца, бо гэта паўплывае на гарантыю вашай прылады, і вы больш не будзеце мець доступу да афіцыйных рэлізаў iOS. Акрамя таго, гэта зробіць вашу прыладу ўразлівай для непажаданых пагроз бяспекі.

Частка 2. Як бяспечна панізіць iOS 15?

Цяпер, калі вы ведаеце пра ўсе неабходныя ўмовы для паніжэння версіі iOS 15, вы можаце лёгка задаволіць свае патрабаванні. У ідэале вы можаце скарыстацца дапамогай iTunes або любога іншага інструмента трэцяга боку, каб даведацца, як перайсці на наступную версію з iOS 15. У любым выпадку пераканайцеся, што рэзервовая копія вашай прылады захоўваецца загадзя. Каб палегчыць вам справу, мы прадставілі два рашэнні для пераходу на iOS 15.

2.1 Рашэнне ў адзін клік для вяртання iOS 15

Крокі для абнаўлення да iOS 15:
  • Падключыце прыладу iOS да ПК і запусціце Dr.Fone.
  • Націсніце на модуль «Рамонт» і перайдзіце да варыянту аднаўлення iOS.
  • Выберыце любы рэжым і пацвердзіце свой выбар, выбраўшы паказаную версію iOS і націсніце кнопку «Пуск».
  • Сядзьце і пачакайце некаторы час, бо прыкладанне пачне спампоўваць сумяшчальную прашыўку для вашага прылады iOS.

    • Заўвага: калі ласка, праверце на https://ipsw.me/product/iPhone , каб пераканацца, што сумяшчальная прашыўка даступная перад паніжэннем.

drfone android box
Dr.Fone - Рамонт сістэмы (iOS)
  • Абнавіце да iOS, прашыўшы папярэднюю прашыўку.
  • Таксама можна абнавіць iOS на вашых iDevices.
  • Няма залежнасці ад iTunes.
  • Выпраўце ўсе сістэмныя праблемы iOS, такія як зависание iOS, белы лагатып Apple і г.д.
Атрымаць для ПК Атрымаць для Mac

2.2 Панізіць iOS 15 з дапамогай iTunes

Though, there are a lot of users who wish to take the assistance of iTunes to do the same. While you can perform iOS 15 downgrade with iTunes, it has its own cons. For instance, you might end up losing the existing data on your phone as it would restore your device to its factory settings. The process is also a bit technical, and you might end up damaging your device in the process.

What you need:
  • The latest version of iTunes
  • IPSW file you wish to install
Steps to downgrade iOS 15 with iTunes
  • Beforehand, Find my iPhone service on your device should be turned off. To do this, unlock it and go to its iCloud Settings > Find my iPhone to disable it. You need to enter your Apple ID and password to confirm this.
  • Now, connect your iOS device to the system and launch an updated version of iTunes on it. Click on the device icon and select your iPhone/iPad.
  • Go to its “Summary” tab and hold the Option Key (on Mac) or the Shift Key (on Windows) while clicking on the “Update” button.
  • This will open a browser window, letting you go to the location where the downloaded IPSW file is saved.
  • Select and load the IPSW file on iTunes and confirm your choice to forcefully update the connected device. Wait for a while and let iTunes complete the iOS 15 downgrade.
operate with itunes

Part 3. Best iOS 15 Downgrading Tools

As you can see, sometimes it can be tough to undo an iOS 15 update on iPhone or iPad. To make the entire process simpler, there are tons of third-party tools that you can try. Not only will they let you downgrade iOS version without losing data, but they would also yield better results. Also, if you have a jailbroken device, then you can even downgrade it to any previous iOS version. Let’s get to know more about the features and flexibility of some of these readily available tools.

3.1 Downgrading Tools for Common People (Fast & Easy to Use)

If you are a beginner and do not have a lot of technical knowledge about iOS downgrading, then consider picking either of the following tools.

3.2 Downgrading Tools for Tech-savvy Users (Complex But Can Achieve More)

If you want more flexibility with your device and have decent technical experience, then you can also explore some of these options too.

tips

What are SHSH blobs for iPhone?

Both SHSH and SHSH2 blobs are referred to digital signatures deployed by Apple on respective IPSW files. This protects the authenticity of the IPSW files and only signed software would be installed on the device. When Apple releases a new iOS version, it stops signing the previous version. In this way, users need to upgrade to the latest public iOS version. This is where previously saved SHSH blobs are used to forge these signatures in order to downgrade our devices.

Part 4. iOS 15 Downgrading Troubleshooting

4.1 iOS 15 Downgrade Failed Many Times

This is one of the most common issues that users face while downgrading their iOS devices. The chances are that while downgrading your device, the process would stop in between unexpectedly.

It happens when we try to downgrade the device to an incompatible iOS version. A faulty internet connection or low free space on the device can also trigger it.

Quick Fixes:
  • Check the iOS version: Needless to say, if you are trying to downgrade your device to an iOS version it no longer supports, then you might face unwanted issues. Ideally, you should try to downgrade iOS 15 to a previous version and not any other existing one.
  • Have a stable internet connection: An inconsistent internet connection is another prominent cause for this error. It happens when the download of the iOS update is halted in between (due to a poor connection). Therefore, make sure that the device stays connected to a working and fast internet connection for a seamless downgrading. You can go to your phone’s WiFi settings to further diagnose this.

4.2 iOS Stuck in Recovery/DFU Mode/Apple Logo

While downgrading your device, your phone might get stuck in the recovery mode, Apple logo, or the DFU mode screen. The situation might seem a bit tedious, but you can try to resolve it by forcefully restarting your phone in most of the cases.

Downgrading from an unstable version, the download process of the firmware update has been halted in between, or any other firmware related issue.

Quick Fixes:
  • Forcefully restart your device: By applying the correct key combinations, we can forcefully restart an iOS device and resolve this issue. Since it resets the current power cycle of the device, it is also known as a soft reset. If you own an iPhone 6s or an older generation phone, then long press the Power and Home button for at least 10 seconds. Users with an iPhone 7 or iPhone 7 Plus can press the Power and the Volume Down button. Keep pressing them until your phone restarts. For iPhone 8 and newer versions, you need to quick-press the Volume Up button first. Let it go and quick-press the Volume Down button. Subsequently, hold the Side button and let it go once the phone restarts.
  • Connect it to iTunes: In case if your phone is stuck in recovery or DFU mode, and you haven’t connected it to iTunes, then do the same. In no time, iTunes will automatically detect that your device is in the recovery mode and display the following prompt. Just confirm your choice and restore your device to factory settings to fix this.

4.3 iOS 15 Downgrade stuck on “Attempting data recovery”

The final step in the downgrading process is when the existing data on the device is recovered. Though, while doing so, the device might get stuck in the process and end up in the same loop.

An incompatible iOS version, loose connections, jailbroken device, lack of free storage, or any other related issue.

Quick Fixes:
  • Check whether your iPhone is jailbroken: Mostly, users get this error while performing iOS 15 downgrade on a jailbroken device. If your device is jailbroken, then you should not use iTunes to downgrade it. Instead, use a readily available tool like iFaith or TinyUmbrella to do the same.
  • Boot your iPhone in Recovery Mode: You can also take the assistance of iTunes and boot your device in the Recovery Mode to resolve this problem. To do this, just launch iTunes on your system and connect your phone to it. Now, using the correct key combinations, forcefully restart your device (already listed above). Subsequently, iTunes will detect as soon as your phone boots in the Recovery Mode. When you get the following prompt, click on the “Restore” button to reset your device.

4.4 iOS 15 Downgrade with iTunes won’t work

Most of the users take the assistance of iTunes (and an IPSW file) to downgrade iOS 15. Though, if there is a problem with the file, your device, or iTunes, then the process might not work.

An unsupported version of iTunes, corrupt IPSW file, or conflict with the device itself can result in this error.

Quick Fixes:
  • Check the IPSW file: Firstly, make sure that you have downloaded the correct IPSW file from a trusted source. Also, the IPSW file should be compatible with your iOS device else you might face this issue.
  • Disable Find my iPhone: Before you connect your device to iTunes, make sure that the Find my iPhone feature is disabled in it. To do this, go to its iCloud Settings > Find my iPhone and simply turn off this feature. This will not cause any conflict when you undo an iOS 15 update on iPhone.
  • Update iTunes: Needless to say, you should use an updated version of iTunes to downgrade iOS 15. Just launch iTunes on your system and go to Help > Check for Updates. This will make iTunes check for any available update. After finishing the update, you can restart your system and reconnect your device.

4.5 iPhone stuck in a loop trying to restore during downgrade

While restoring the device during the downgrading process, your device might get stuck. For instance, it can get stuck in a restart loop, not letting you access the device.

Lack of free space on the device, corrupt storage, incomplete update, bad IPSW file use, or any other compatibility issue.

Quick Fixes:
  • Force restart your device: This will reset the present power cycle of your device and will let you fix any minor issue related to it. To do this, you need to press certain keys on your device. We have already listed the correct key combinations to force restart a device in the previous sections.
  • Restart the process: If the downgrading process has been halted in between and your phone keeps restarting, then force restart it first. Now, connect it to iTunes or use any other third-party tool to undo an iOS 15 update on iPhone all over again.
  • Use a 3rd party tool: If nothing else seems to work, then consider using a dedicated iOS repairing tool like Dr.Fone - System Repair (iOS). It can fix all kinds of iOS and iTunes related issues without causing any harm to your device. Just launch the application and follow a simple click-through process to put your phone out of the loop and downgrade it to a stable iOS version.

4.6 iOS 15 Downgrade won’t work using SHSH

SHSH Blobs are Apple signatures that are needed to downgrade iOS 15 in a timely manner. Their absence or a wrong SHSH entity can tamper with the downgrading process.

Wrong SHSH blob, corrupt unit by a third-party dump, or an expired SHSH blob can be some of the major reasons for this.

Quick Fixes:
  • Use an SHSH blobs dumper: There are tons of readily available third-party SHSH dumpers (like iFaith) that you can try. Though, most of these applications will require a jailbroken device. You can simply connect your device or provide its model to obtain an ideal SHSH blob.
  • Obtain your device’s SHSH blob: You can connect your iPhone/iPad to the system and launch iTunes on it. Select your device and go to its Summary. Click on the “Serial Number” field a few times, till it displays the ECID number. Now, copy the ECID code and go to any online source to convert it into hexadecimal code.

4.7 Lost all data after iOS 15 Downgrade

This is one of the worst nightmares for any iOS user. After completing the downgrade, the chances are that you might end up losing all the saved photos, videos, contacts, messages, and other important files from your phone.

The process could be halted in between, a corrupt device, bad firmware, and so on. An upgrade to an unstable release of iOS can also cause data loss on your device.

Quick Fixes:
  • Use a data recovery tool ASAP: If you have suffered from an unwanted data loss on your device, then take the assistance of an iOS data recovery program . A part of the Dr.Fone toolkit, it is one of the first and the most successful data recovery tools for iOS devices. All you need to do is connect your device and launch the application. Follow a simple click-through process to extract all kinds of lost or deleted data from your device. The application will let you preview the extracted data, letting you selectively save it to the location of your choice.

4.8 Backup cannot be restored after iOS 15 downgrade

Even after losing their data while downgrading an iOS device, users try to restore an existing backup. Sadly, there are times when the previous iTunes or iCloud backup ceases to restore on the downgraded device.

The problem usually occurs due to a compatibility issue among various iOS versions. For instance, you could have taken the backup of your device when it was running on another iOS version and now you are trying to restore it on an unsupported iOS version.

Quick Fixes:
  • You can load a previous iTunes or iCloud backup using a iOS restoring tool and even preview its data on its interface. For instance, to restore an iCloud backup, you simply need to log-in to your iCloud account. The application will list the available backup files for you pick an ideal option. In this way, you can easily restore your data without erasing the existing content on your device.

Part 5. FAQs about iOS 15 Downgrade

Yes, you can downgrade iOS to a previous version signed by Apple. Users get 14 days after a public official release to do it. If you have upgraded your device to a version, then you can downgrade to a stable version easily (until 14 days after the release of its stable version).

There are all kinds of ways to undo an iOS 15 update on iPhone. If you want, you can take the assistance of iTunes to do the same. Though, to downgrade iOS 15 without losing data, consider using a more sophisticated tool like Dr.Fone - System Repair (iOS). In case if you have a jailbroken device, then you can even give tools like TinyUmbrella a go.

When we install an iOS version on the device, the Apple server asks for a digital signature to authenticate it. A signed IPSW file would have a verified signature issued by Apple, letting us upgrade/downgrade the device without any hassle. Therefore, if an IPSW file is not signed by Apple, then it will not be recognized by the server and the upgrading/downgrading process won’t be completed.

There are all kinds of SHSH dumps and readily available third-party tools that can help us force Apple’s signature and create SHSH blobs even after Apple stops signing them. Though, you should know that Apple might revoke the authentication of such SHSH blobs anytime. To do this, you need to have a jailbroken device and use a dedicated tool like iFaith or FutureRestore.

The Apple Software Program lets us test the releases of iOS before the public availability. You can join or leave the program anytime you want without spending anything. If you want to leave it, then go to the Unenroll section of the website.

apple beta program

Ideally, you can’t downgrade your device to an unsigned iOS version. This is because the Apple server won’t authenticate your downloading request without a valid SHSH blob. That is why users take the assistance of a previously saved SHSH blob to do the same. You can also use a third-party downgrading tool to do it as well.

After downgrading an iOS update, you might find an existing software profile on your device storage. To remove this, just go to your device’s Settings > General > Profile and select the iOS profile from here. Tap on the “Delete Profile” option and confirm your choice to remove it.

You can restore a previously stored SHSH blob from your device or forge Apple’s signature. There are a few third-party tools like FutureRestore that can help you do the same. You can also choose to dump your SHSH blobs in order to use them afterward. Though, in most of the cases, users have to jailbreak their device in order to do it.