Free tools for restoring unsigned IPSW (iPhone/iPad):
iDevice Restore (formerly iREB/rSLide) – Some older versions allowed restoring with unsigned firmware using kloader or pwned DFU, but support is limited to older devices (iPhone 4s, 5, etc.) and iOS versions.
FutureRestore (by tihmstar) – This is the most well-known free tool, but it requires valid SHSH blobs saved for the unsigned firmware you want to restore to. It works with signed baseband and SEP.
LibiRestore / Restore64 – Open-source tools that can attempt restores, but without blobs or SEP compatibility, they won't succeed on modern devices.
Important warning:
On modern devices (iPhone 6s and newer with iOS 10+), you cannot restore an unsigned IPSW without valid SHSH blobs and a compatible SEP. Even with free tools, the restore will fail because Apple's server signature check is enforced by the device's hardware.
If you don't have saved blobs, there is no free tool that can bypass Apple's signing mechanism on current devices. Any claim otherwise is likely a scam or malware.
Summary:
The ability to restore an unsigned IPSW (iPhone Software) file is highly restricted due to Apple's security protocols. While several third-party tools claim to offer this service for "free," the feasibility depends entirely on your device's hardware and whether you have specific saved files. The Fundamental Challenge
Apple uses a digital signature system to authorize iOS installations. Once a version is "unsigned," Apple’s servers will not issue the required unique digital certificate (SHSH blob) needed to complete the restore process. For most modern devices (iPhone XS and newer), there is currently no reliable free tool
to restore an unsigned IPSW without these previously saved blobs. Legitimate Free Tools & Methods unsigned ipsw restore tool free
For specific older devices or technical users, the following tools are the most recognized: Downgrade and dualboot status of almost all iOS devices
Restoring an iPhone to an unsigned IPSW version is a complex task because Apple uses a signing server to authorize firmware installations. Once a version is "unsigned," official tools like iTunes or Finder will block the process
However, you can still perform this for free using specialized community tools, provided you meet specific technical requirements. Best Free Tools for Unsigned Restores FutureRestore (Highly Recommended) What it is:
A command-line tool specifically designed to restore unsigned firmware. The Catch:
have saved "SHSH blobs" (digital signatures) for the specific iOS version while it was still being signed. Requirement:
Your device usually needs to be in a jailbroken state to set a "nonce generator" that matches your saved blobs. What it is: A popular all-in-one free management tool for Windows. How it works:
It simplifies the "Pro Flash" process, allowing you to import an IPSW file manually. The Catch:
While it has options for unsigned flashing, success depends heavily on your device's chip (A-series) and whether Apple is still signing the "SEP" (Secure Enclave Processor) for that version. Steps to Restore Using FutureRestore To use this tool effectively, follow these general steps: Step 1: Gather Files. Download the FutureRestore executable from , your target from sites like , and your saved SHSH blobs Step 2: Set Nonce.
Use a jailbreak tool to set your device’s nonce to match the one in your blob file. Step 3: Connect & Run. Free tools for restoring unsigned IPSW (iPhone/iPad):
Connect your device to your computer in Recovery Mode. Open your terminal/command prompt and run the FutureRestore command pointing to your IPSW and blob files. Step 4: Completion.
The tool will bypass the standard iTunes check and install the firmware. Note that this erases all data , so back up your device beforehand. Important Limitations Hardware Barriers:
Devices with newer chips (iPhone 11 and later) have much stricter security, making unsigned restores almost impossible without very specific exploits. SEP Compatibility:
Even if you have blobs, the current signed version of iOS must have a "SEP" and "Baseband" that are compatible with the version you are moving to. If they aren't, the restore will fail or break FaceID/TouchID. Data Loss:
Almost all methods for installing unsigned firmware require a full restore, meaning all local data will be wiped. For a safer but more limited option, you can look into methods if the version you want was only recently unsigned. for future iOS versions?
As of 2025, the golden era of unsigned restores is fading. The last great hardware exploit (checkm8) is nearly 7 years old. Only devices with A11 or older chips can be downgraded freely and reliably.
However, developers are working on two promising fronts:
Until then, save your SHSH blobs for every iOS version you might want in the future. Use TSS Saver or Blobsaver (both free). They are your only ticket to downgrade a modern iPhone.
Best for: iPhone 5s – iPhone X (A7–A11)
Price: Free
How it works: Uses the checkm8 bootrom exploit to disable signature checks. FutureRestore (by tihmstar) – This is the most
LeetDown is the most polished unsigned IPSW restore tool free available. It provides a graphical interface to downgrade to any unsigned iOS version that is still compatible with your device’s SEP (Secure Enclave Processor). Because SEP must also be compatible, you cannot go back to iOS 10 on an iPhone X – but you can downgrade to iOS 13 or 14.
Steps to use LeetDown:
Limitations: Only works on macOS. Requires A7–A11 devices.
Vieux is an open-source Python tool that bundles multiple exploits (checkm8, blackbird, alloc8). It can restore any unsigned firmware to any device from iPhone 4s to iPhone X.
Key Features:
Free Download: GitHub – m1stadev/vieux.
Best for: Linux users and developers who want to script mass restores.
An unsigned IPSW restore tool is software designed to bypass Apple's signature verification process (known as SHSH validation) when flashing firmware onto an iOS device.
To understand this, let’s break down the acronyms:
.ipsw file containing the entire operating system.A successful unsigned restore tool exploits one of three things: