It is possible to roll back to previous version operating system, for which jailbreak tools are available. Apple traditionally leaves this option for a short time after the release of a new OS. A day after the update was released, the company is still issuing certificates for iOS 8.4.
Released on August 13, iOS 8.4.1 is a technical update aimed at eliminating bugs in the previous version. The problem is that in addition to troubleshooting Apple Music This release closes vulnerabilities that are necessary for the operation of the TaiG jailbreak utility. Anyone hoping to use Cydia in the future should install iOS 8.4 as soon as possible.
Right now, owners of iPhone and iPad with iOS 8.4.1 have the opportunity to perform a downgrade procedure - rollback to the previous stable version of the OS. It's about only about iOS 8.4 - for it Apple issues digital signatures. It is worth remembering that the situation can change at any moment.
Requirements:
Step 1: Upload file iOS firmware 8.4 in IPSW format at this link.
Step 2: Make sure you are using the latest version of iTunes. You can download iTunes 12.2.2 on this page.
Step 3: Create backup copy information on the device. This can be done by going to settings in iCloud -> Backup–> Create a backup copy, or by connecting your iPhone or iPad to your computer and saving the backup using iTunes.
Step 4: Disable Touch ID/Password in the main settings section.
Step 5: Disable the Find My iPhone service in Settings -> iCloud.
Step 6: Connect to iPhone computer or iPad with iOS 8.4.1 installed.
Step 7: Launch iTunes and select the icon of your gadget in the top panel of the program.
Step 8: Hold Shift on your keyboard (or Alt on OS X) and click the “Restore” button.
Step 9: In the program window, specify the iOS 8.4 firmware file for your iPhone or iPad.
Step 10: Wait for the procedure to complete, the OS recovery process will take 5 to 10 minutes. You can now use your device with iOS 8.4.
Now, after switching to iOS 8.4, you can jailbreak according to the instructions (for Windows) or (for Mac).
On iPhone and iPad, many users had a desire to roll back to the previous, faster and more stable firmware. Even though Apple covered the possibility of a rollback, folk craftsmen concocted a utility OdysseusOTA2, which brings back the ability to downgrade on some iOS devices. On what devices is this possible, what is needed for this and how to do it - read in this material.
Rollback to iOS 8.4.1. is only possible because Apple is still signing OTAblobs for iOS 8.4.1. A prerequisite for downgrade is the presence of .
Unfortunately, the utility OdysseusOTA2 allows you to rollback not on all iOS devices. The lucky ones were iPhone owners 5, iPhone 5c, iPhone 4s, iPad 3 and iPad 2, which can downgrade from iOS 9.0, 9.0.1, 9.0.2 to iOS 8.4.1 without having certificates. Also OdysseusOTA2 allows users of these iPhones and iPads to upgrade from iOS 7 to iOS 8.4.1.
1 . for your device model. Place the firmware file on your desktop.
2 . Download the downgrade utility OdysseusOTA2 from here.
3 . Open " Terminal" and enter the following commands sequentially:
cd to the directory
cd odysseusOTA2
cd macos
After each of them press the key Return(Enter).
Attention! Examples of all commands are in the file “README.txt”, which is located in the “odysseusOTA2” folder.
./ipsw ~/Desktop/.ipsw custom_downgrade.ipsw -bbupdate
where instead of indicate the name of the firmware, for example:
./ipsw ~/Desktop/iPhone5,2_8.4.1_12H321_Restore.ipsw custom_downgrade.ipsw -bbupdate
Wait for the process to complete (the message “ Done»).
5
. Download SHSH Blobs by entering the following command in Terminal:
./idevicerestore -t custom_downgrade.ipsw
6 . Unpack pwnediBSS by entering the following command in Terminal:
./xpwntool `unzip -j custom_downgrade.ipsw ‘Firmware/dfu/iBSS*’ | awk ‘/inflating/(print $2)’` pwnediBSS
7 . Open Cydia on your iPhone or iPad.
8
. Go to the section " Search».
9
. In the search bar enter " OpenSSH", select the utility and click the " Install».
10
. Click on the button " Return to Cydia».
11
. Connect your iPhone or iPad to the same network as your Mac.
12
. Open Settings → WiFi→ select active connection to the network and remember the IP address.
13
. IN " Terminal» enter the following command, thanks to which the received files will be copied to the iPhone or iPad:
scp pwnediBSS ../kloader root@IP_OF_DEVICE:
where instead of IP_OF_DEVICE
scp pwnediBSS ../kloader [email protected]:
Attention! After entering the IP address, do not forget to include a colon!
14
. Confirm your actions by entering the command "Yes".
15
. For password enter "alpine"(without quotes).
16
. IN " Terminal» open a new tab and enter the following command:
ssh root@IP_OF_DEVICE
where instead of IP_OF_DEVICE enter the IP address of your device, for example:
17 . To message "Terminal" ~root# enter the following command:
./kloader pwnediBSS
18
. When iPhone display or the iPad turns black, close it "Terminal" current tab with ssh session.
19
. Enter the following command in the main window "Terminal":
./idevicerestore -w ./custom_downgrade.ipsw
Wait for the process to complete, during which your iPhone or iPad will restart several times. At the end of the process, a window with the primary iOS setup 8.4.1.
Ready!
It is possible to roll back to a previous version of the operating system. Apple traditionally leaves this option for a short time after the release of each new OS. A day after the update was released, the company is still issuing certificates for iOS 8.4.1.
Released September 16 iOS update 9 is a major software release with a large list of changes and improvements. However, many iPhone and iPad owners report problems with their devices. The failures began at the stage of downloading the update, when people could not receive the promised distribution due to the unavailability of Apple services.
Owners of iOS devices complain about incorrect Wi-Fi work, missing menu items in settings, graphic artifacts when displaying the interface, freezing of the operating system. Among the innovations in iOS 9 are improved power consumption algorithms, but in reality, the gadgets’ battery loses charge too rapidly.
Probably, subsequent updates to iOS 9 will fix these problems, but until then, it makes sense to perform a downgrade procedure - rollback to iOS 8 firmware. We are only talking about version iOS 8.4.1 - Apple still issues digital signatures for it. It is worth remembering that the situation can change at any moment.
Requirements:
Step 1: Download iOS 8.4.1 IPSW file from this link.
Step 2: Check that you have installed latest version iTunes. You can download iTunes 12.3.
Step 3: Make a backup of the data on the device. This can be done by going to iCloud settings -> Backup -> Create a backup, or by connecting your iPhone or iPad to your computer and saving a backup using iTunes.
Step 4: Disable Touch ID/Password in the main settings section.
Step 5: Turn off Find My iPhone in Settings -> iCloud.
Step 6: Connect your iPhone or iPad with iOS 9.0 on board to your computer.
Step 7: Open iTunes and select the icon of your gadget in the top bar of the program.
Step 8: Hold Shift on your keyboard (or Alt on OS X) and click the “Restore” button.
Step 9: In the program window, specify the iOS 8.4.1 firmware file downloaded in step 1.
Step 10: Wait for the procedure to complete, the OS recovery process will take some time. You can now use your device with iOS 8.4.1.
Everyone has it Android updates and iOS have their advantages. However, sometimes it happens that latest version the system has some critical flaws that are not corrected by the developer for a long time. Or a situation may arise when a new update simply loads the mobile device terribly and slows down. One of these failed updates version became iOS 9.3.5. And everything would be fine, I left a new version, which would correct existing shortcomings, but this update was the last for a number of devices based on the A5 processor, and more specifically:
First of all, we need to use an exploit that will allow us to jailbreak. The list of devices on which it can be used is as follows:
