TechSpace Knowledgebase
Search:     Advanced search
Browse by category:
Contact Us

How to Downgrade to an Older Version of iOS on an iPhone or iPad

Views: 263
Votes: 0
Posted: 02 May, 2016
by:
Updated: 03 May, 2016
by:

Apple wants to keep your iPhone and iPad up-to-date. But you may want to go back to an older operating system. This is especially true if you’re trying out a beta version of iOS on your iPhone or iPad.

When a new stable version of iOS comes out, it’s usually only possible to downgrade back to the old version for a few days, although there’s a trick you can use. It’s easier to downgrade to the current stable version if you’re trying out a beta version of iOS.

Downgrade From Beta to Stable

If you’re using a beta, or preview, release of iOS on your phone or tablet, downgrading is easy. This process will erase everything on your iPhone or iPad, however. Device backups created using the beta version of iOS won’t restore to the old version of iOS, so you’ll need to either restore an old backup or set things up from scratch afterwards.

To restore your device to the stable version of iOS, you’ll need a Mac or PC running iTunes and a cable to connect your iPhone or iPad to that computer. Turn off your iPhone or iPad by holding down the Sleep/Wake (Power) button until the Power switch appears and sliding it to the right. Plug the cable into the computer, but not the iPhone or iPad. Press and hold the Home button on your iPhone or iPad — and keep holding it down. Plug the cable into your iPhone or iPad and keep holding the Home button down until the “Connect to iTunes” screen appears. You’ll see a cable pointing at an iTunes icon.

Launch iTunes if it doesn’t automatically appear. iTunes will inform you that there’s a problem with your device. Click the “Restore,” button and then click “Restore and Update.” iTunes will wipe the data stored on your iPhone or iPad and reinstall the current stable version of iOS rather than the preview version of the iOS software is was previously running.

If you have a backup created prior to installing the beta version of iOS, you can click “Restore Backup” from the device’s screen in iTunes to restore it onto the device after iTunes finishes restoring its operating system.

Restore Using an IPSW

Apple only allows you to load “signed” firmware images, or versions of iOS, onto its devices. Apple generally stops signing the previous version of iOS a few days after a new version is released.

This means that it’s often possible to downgrade back to your previous version of iOS for a few days after you upgrade — assuming the latest version was just released and you upgraded to it quickly.

To do this, you’ll need an .ipsw file. These may be stored on your computer if you used iTunes to upgrade to them, but they’re regularly deleted to free up space. You’ll probably need to download the IPSW file from a website like IPSW.me. Remember: You can only restore iOS images marked as signed. If the version of iOS you want to restore is marked as unsigned, you just can’t restore it.

Once it’s downloaded, connect your iPhone or iPad to your computer and open iTunes. Click over to the device’s page in iTunes.

On a Mac, hold down the Option key and click the “Restore iPhone” or “Restore iPad” button. On a Windows PC, hold down the Shift key and click the “Restore iPhone” or “Restore iPad” button. You’ll see a file browser dialog — browse to the downloaded .ipsw file and double-click it to restore that specific version of iOS to your device.

Save SHSH Blobs So You Can Restore Later

Those are the only two official ways to downgrade to previous versions of iOS. You can either downgrade from a beta version to a stable version, or downgrade to the previous stable version during a short window where the old IPSW files are still signed by Apple.

But, if a version of iOS is signed by Apple, you can use a tool to capture that “authorization” to run the previous version of iOS — in the form of “SHSH blob” files. These are device-specific digital signature files that control which versions of iOS can run on a device. Once you’ve received that authorization for your device, you can keep those files and restore that old version of iOS at any point.

For example, if you’re using an older version of iOS with a jailbreak available but you want to play with the current version, you’d want to get local copies of those SHSH blobs before upgrading to the current version. This way, you can then downgrade to the older, unsigned version and continue using your jailbroken software.

You can use TinyUmbrella — and possibly other tools — to create local copies of these SHSH blobs. Afterwards, you can use it to force iTunes to restore older IPSW files.

Cr. http://www.howtogeek.com

Others in this Category
document How to make a self extracting archive that runs your setup.exe with 7zip -sfx switch
document How To Make UEFI Bootable USB Flash Drive to Install Windows 8
document How to set up an Internet email account in Outlook 2013 or 2016
document How to back up notes in OneNote 2016 for Windows
document Introducing Send Email in Access 2013 web apps
document How to Stop Microsoft Office Updates
document 16 Terminal commands every user should know
document MS Office : View my options and settings in the Trust Center
document How Can I Secure My Microsoft Office Files?
document Google Drive : Change your sync settings
document How to Jailbreak iOS 9.2
document How to USB boot : Windows PE KKD v.7
document Getting Started With Skype for Business for Windows
document What is Lync Basic?
document Getting Started With Lync 2010/2013 For Windows
document Getting Started With Lync for Mac
document How Do I Fix Credential Issues In Lync?
document Troubleshooting Skype for Business/Lync Secure Chat And Conferencing
document How Do I Clear Skype for Business/Lync Cache?
document Lync Mobile 2013 For Windows Phone 8
document Lync Mobile 2013 For iOS devices
document Lync Mobile 2013 For Android
document Lync Mobile Auto-Detect Server Feature
document Getting Started With Lync Mobile 2010 For iOS
document Getting Started With Lync Mobile 2010 For Windows Phone
document How Do I Enable Skype for Business/Lync Logging?
document How to always pop-out an email window in Outlook 2013
document Tutorial: Outlook signature image with hyperlink
document Fix for Outlook: “Contacting the server for information”
document Outlook 2013 max file limit: “The file you’re attaching is bigger than the server allows.”
document Outlook hangs on loading profile? Solutions
document Message stuck in Outbox
document Is your Windows 10 PC slowing you down, and the SFC utility is unable to fix the problem? Then use DISM to repair the Windows image to enable SFC to do its job.
document How to make a full backup of a Windows 10 or Windows 8.1 PC
document How to create a System Restore Point in Windows 10 with a simple double-click
document How to properly remove the Windows.old folder on Windows 10
document How to use Bing images within Office and Edge on Windows 10 PC.
document Use Windows Defender Offline to remove tough viruses from your Windows 10 PC
document How to use Storage Spaces in Windows 10
document GOOGLE ANALYTICS JUST GOT A NEW AI TOOL TO HELP FIND INSIGHTS FASTER
document Change Window 7 and Window 10 Password Without Knowing old Password from Command Prompt
document Find Out If Someone Stealing Your WiFi network from your Android Mobile or iPhone
document Instructions for Sharing Data Between Two Computers/Laptop Using Minishare Software
document Shareit: Transfer Data between two or more laptop without WiFi Connection
document Access your Shared PC Drives and Folders from Android Mobile
document Monitor Internet Data Usage in Window PC [Real-Time]
document Unlock Window Computer from Android/iPhone Smrtphone (Two Way Authentication)
document Most Amazing Notepad Tricks that Works in Your PC
document How to Change the Color of Window 7 and Windows 8 Folder
document How to opt out of WhatsApp data sharing
document Sponsored: MobiKin Doctor for Android
document 10 Photoshop Tricks to Fix Your Worst Photos
document The Easiest Ways to Upgrade Your Computer Yourself
document How to fix Outlook Not Responding Error
document How to Install Drivers
document How to Find Drivers for Devices Using a Hardware ID
document How to Outlook 2010 - Rebuild the index file
document How To Fix Outlook 2016 Search Problems
document How to Delete a Facebook Fan Page
document How to HP Printers - USB Printer Setup (Windows)
document How to require a password for shared printers in OS X
document Why Does 64-Bit Windows Need Two Program Files Folders?
document How to manually add a print server port?
document How to Force a Blue Screen in Windows
document How To Repair HDD with DLC 2015
document How to change XAMPP apache server port?
document How to use Rufus to create a bootable USB drive to install (almost) any OS
document How to install Bitdefender 2017 on Windows devices
document How to use Bitdefender File Shredder



RSS