Apple wants to proceed your iPhone and iPad up-to-date. Simply you may want to go back to an older operating organization. This is particularly true if you lot’re trying out a beta version of iOS on your iPhone or iPad.
When a new stable version of iOS comes out, it’s normally simply possible to downgrade back to the former version for a few days, although at that place’s a trick you lot tin 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 piece of cake. 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 sometime version of iOS, so you’ll need to either restore an former backup or prepare things up from scratch subsequently.
How to Reset Your iPhone or iPad, Even if it Won’t Boot
To restore your device to the stable version of iOS, y’all’ll demand a Mac or PC running iTunes and a cablevision to connect your iPhone or iPad to that computer. Turn off your iPhone or iPad by belongings downwards the Sleep/Wake (Ability) button until the Power switch appears and sliding information technology to the right. Plug the cable into the reckoner, simply not the iPhone or iPad. Press and hold the Home push on your iPhone or iPad — and keep holding information technology down. Plug the cable into your iPhone or iPad and keep holding the Home push 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 announced. iTunes will inform yous that at that place’s a problem with your device. Click the “Restore,” push and and so click “Restore and Update.” iTunes will wipe the data stored on your iPhone or iPad and reinstall the electric 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 lot to load “signed” firmware images, or versions of iOS, onto its devices. Apple tree generally stops signing the previous version of iOS a few days after a new version is released.
This means that it’southward often possible to downgrade dorsum to your previous version of iOS for a few days afterward you upgrade — assuming the latest version was just released and you upgraded to it apace.
To do this, you’ll demand an .ipsw file. These may be stored on your computer if you lot used iTunes to upgrade to them, but they’re regularly deleted to free upward space. You’ll probably need to download the IPSW file from a website similar IPSW.me.
Remember: Y’all tin only restore iOS images marked as signed. If the version of iOS yous want to restore is marked as unsigned, y’all just can’t restore information technology.
Once it’s downloaded, connect your iPhone or iPad to your figurer and open up iTunes. Click over to the device’s page in iTunes.
On a Mac, concord downwardly the Option cardinal and click the “Restore iPhone” or “Restore iPad” push button. On a Windows PC, hold downwards the Shift cardinal and click the “Restore iPhone” or “Restore iPad” push. 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 After
Those are the only 2 official ways to downgrade to previous versions of iOS. Y’all can either downgrade from a beta version to a stable version, or downgrade to the previous stable version during a curt window where the old IPSW files are withal signed by Apple.
Merely, if a version of iOS is signed by Apple, you tin employ a tool to capture that “potency” to run the previous version of iOS — in the form of “SHSH blob” files. These are device-specific digital signature files that command which versions of iOS can run on a device. Once y’all’ve received that authorization for your device, you lot tin can go on those files and restore that former version of iOS at any signal.
For case, if you’re using an older version of iOS with a jailbreak bachelor but you want to play with the current version, yous’d want to get local copies of those SHSH blobs before upgrading to the electric current version. This way, you can then downgrade to the older, unsigned version and continue using your jailbroken software.
You tin use TinyUmbrella — and perhaps other tools — to create local copies of these SHSH blobs. Afterwards, you can employ it to force iTunes to restore older IPSW files.
Apple doesn’t really desire you running a previous version of iOS on its devices. Apple tree might occasionally permit you downgrade to a previous version of iOS if there’southward a big problem with the latest version, but that’s it.
Yous can cull to sit on the sidelines, if you similar — your iPhone and iPad won’t force you to upgrade. But, after yous do upgrade, it’s non more often than not possible to downgrade again.
Epitome Credit: Olle Eriksson on Flickr