Dec 25, 2024 • Filed to: Mobile Repair Solutions • Proven solutions
For iPhone users, Apple's iOS continues to evolve with new features and enhancements. It enriches the overall user experience and makes iPhones more appealing. However, with each iOS update, certain older devices may experience performance issues. Thus, many users have sought a way to revert to previous iOS versions. This process is referred to as "Downgrading the iOS Version."
Apple, however, typically allows the installation of the latest iOS version. It leaves little room for users to explore earlier firmware. In this comprehensive guide, we will explore the world of SHSH blobs. It will also discuss how they can be utilized to downgrade your iPhone's operating system.
SHSH blobs, short for Signature HaSH blobs, are digital signatures generated by Apple. Apple uses them to authenticate and validate the installation of specific iOS versions on its devices. They play a crucial role in the device's firmware verification process. It is used during the update or restore procedure. When a user begins a software update or restore through iTunes/Finder, a specific process takes place.
The Apple servers come into play during this process. They sign the particular iOS version being updated or restored with a unique SHSH blob. That blob is specific to the user's device and the requested firmware. This signature is encrypted and stored on Apple's servers, as well as locally on the device itself. The primary purpose of SHSH blobs is to prevent users from downgrading to older iOS versions.
It ensures that the latest and most secure software is running on compatible devices. Apple's signing window is usually open for a limited time after the release of a new iOS version. During which users can freely update or restore to that specific firmware. However, once Apple stops signing that version, attempting to install it on a device will result in an error through official means.
When it comes to saving SHSH blobs, there are several methods you can use. This ensures the safety and future usability of your iOS device's firmware. These methods are essential for users who wish to downgrade to specific iOS versions. Below are four methods to save SHSH blobs:
One of the simplest ways to download SHSH blobs is by using the TSS Saver website. Follow these straightforward step-by-step instructions:
RedSn0w is a popular jailbreaking tool for iOS devices and SHSH saver. You can use this tool to save SHSH blobs for your iPhone. Here are the steps to save SHSH blobs via RedSn0w:
Instructions: Use an Apple-certified USB cable to connect your device to the Mac. Hold the Power button and use the slider to power off your device. Click "Next" in the RedSn0w app. Follow the on-screen timer and instructions to enter DFU (device firmware update) mode.
shshd is a convenient tweak designed for automatic blob saving. Once installed, it relieves you of the need to manually save blobs. It takes care of the entire process in the background. It's important to note that shshd requires your device to be jailbroken to function. Here are the steps for saving blobs via shshd:
Instructions: Launch your package manager and look for the "shshd" package using the search feature. Proceed to download and install the package. Tap "Done" when prompted to finish the installation process. This will automatically save the blobs every time you jailbreak the iPhone, and you can retrieve them from the TTS saver website by entering the ECID number.
For older iPhone models, iFaith can be a valuable tool for downgrading. It is compatible with iOS devices running up to iOS 5.0.1. Moreover, the tool is also Windows only. Use the following steps to save SHSH blobs via iFaith:
Wondering about how to downgrade an iOS device with SHSH blobs? Once you have SHSH blobs of your desired iOS version, you can use a tool called FutureRestore. Along with the tool, you need the desired unsigned IPSW file. Once you have all three items, move them to a folder and use the following steps:
SHSH blobs are not the only way to downgrade your iOS device to your desired iOS version. There are many third-party tools available that allow you to downgrade your iOS device. The best tool in this regard is Dr.Fone - System Repair (iOS). This comprehensive tool lets you upgrade/downgrade your iOS device without jailbreaking. It also lets you upgrade your iOS device to the latest beta versions.
Wondershare Dr.Fone is also a complete system repair package to keep your iOS device fully functional. It can resolve over 150 iOS system issues without data loss. Here are the straightforward steps to downgrade your device with Wondershare Dr.Fone:
Upgrade and Downgrade iOS Without iTunes
After installing and launching Wondershare Dr.Fone, access "System Repair" through its "Toolbox." Now choose "iOS" and click "iOS Upgrade/Downgrade" on the following screen.
It is time to connect your iOS device to your computer. Use the original or Apple-certified cable to avoid complications. Once Wondershare Dr.Fone has detected the device, proceed with the "Downgrade" option. It will show the list of available firmware. Click "Download" to get your desired firmware.
Wait for the firmware download to complete. When it is completed, click "Repair Now" to begin the downgrading process. This process will take some time, and when it is done, click "Done."
To conclude, we embarked on a journey into the world of iOS downgrading using SHSH blobs. It is an ingenious method that allows users to explore older iOS versions on their devices. This guide discussed and provided different ways to save SHSH blobs. It also taught you how to downgrade the iOS version using SHSH blobs via a tool called FutureRestore.
If you don't have access to SHSH blobs or find the process too advanced, an easy solution is Wondershare Dr.Fone. This versatile tool proved to be a promising option for those seeking to explore older iOS versions without the reliance on saved SHSH blobs. With Dr.Fone's System Repair feature, users can downgrade their iOS devices with ease.
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