iPhone Tips

How to Downgrade iOS without SHSH Blobs [Tutorial]

by Sophie Green   Updated on 2024-04-02 / Update for  Downgrade

The newer updates sometimes bring unnecessary changes or update bugs that might hinder the user's experience, and they would look forward to downgrading iOS. If you’re also in such a situation, you must have come across the SHSH blobs. If you want to downgrade iOS but don’t want to deal with the SHSH blobs, this is the ultimate guide to help you install unsigned IPSW without shsh blobs.

Part 1: Can You Install Unsigned IPSW without SHSH Blobs?

Whenever you install any update from Apple on your iPhone, it comes tailored with a signature code. It’s in encrypted form and stored on your iPhone. It’s on your iPhone by Apple to prevent you from downgrading the iOS version.

Apple encourages users to use the latest iOS version on the iPhone and avoid moving to the older iOS version. Thus, Apple unsigned the older version of iOS. In other words, they’re no longer supported by Apple, and you’re left with the option to downgrade unsigned iOS.

Apple unsigns the previous iOS as the newer updates are rolled out. As soon as the latest update is released, the older version of the iOS is unsigned and unavailable for the device. This makes it a tricky and challenging task to downgrade iOS on an iPhone.

The SHSH Blobs come in handy to rescue iPhone users who are opting to downgrade to the iOS version. It’s a tricky process, consisting of downloading the blobs for your iPhone from the 3rd party website and installing the downgraded iOS version on the iPhone.

This is a technical process requiring much concentration because of its complexity. If you’re also in a situation where you need to downgrade the iOS version on your iPhone, your preference would be to install the iOS unsigned IPSW without SHSH blobs.

The answer to “Can you install unsigned IPSW without SHSH Blobs?” is a big yes. There’s a method that supports installing the unsigned IPSW without SHSH blobs. It’s simple, straightforward, and less time-consuming than the SHSHS blobs.

Part 2: How to Install Unsigned IPSW without SHSH Blobs

Installing an unsigned IPSW without SHSh Blogs isn’t a big deal as long as you have the right tool. Tenorshare ReiBoot is the professional that allows you to downgrade your iPhone to unsigned IPSW without using the SHSH Blobs.

Tenorshare ReIBoot is designed for iPhone/iPad users to fix iOS-related issues, such as an iPhone stuck on the Apple logo or an iPhone black screen, or to update bugs or glitches. It can fix up to 150+ issues with a one-click process.

One of the best things about the Tenorshare ReiBoot is you don’t need to indulge in a complex process to install the unsigned iOS without the SHSH blobs. It lets you downgrade or upgrade the iOS on your iPhone with a one-click process without requiring any technical knowledge.

Follow the steps below to install the unsigned IPSW without SHSH blobs:

  • Download and install the Tenorshare ReiBoot on your computer. Launch it and connect your iPhone to the computer using a compatible cable.

    launch reiboot
  • Click on the Upgrade/Downgrade option on the home screen. Select the Downgrade option, then click on the Downgrade button to proceed.

     advanced mode
  • The next step is to download the firmware to which the tool will downgrade your iPhone. Select the iOS firmware package, and hit on the Download button.

    download firmware
  • Once the firmware is downloaded, it’s ready to downgrade your iPhone. Click on the initiate Downgrade button to initiate the process.

    start downgrade

    Wait for the progress bar to complete, and don’t disconnect your iPhone. Your iPhone will automatically reboot once iOS is downgraded.

    downgrade completed

Part 3: FAQs about Install Unsigned IPSW

1. Can jailbreaking my iPhone or iPad let me install unsigned iOS versions on it without SHSH blobs?

Jailbreaking your iPhone or iPad allows the user to access the system files, customize the settings, and tweak the features and apps that stock iOS doesn't allow. However, jailbreaking can't help the users install unsigned iOS versions without SHSH blobs.

2. What happens if you downgrade to an unsigned iOS?

Installing the unsigned iOS version can bring multiple risks, such as security risks, exposing your device to vulnerabilities, stealing data, and installing malware. Plus, the apps might need to be fixed due to the outdated iOS version.

3. Is it possible to downgrade iOS without any tools?

No, it’s not possible to downgrade iOS without the tools. Downgrading the iOS version on iPhone includes restoring the devices and installing a firmware file via a tool. Tenorshare ReiBoot is the ultimate tool for downgrading/upgrading iOS without hassle.


Upgrading the iOS on the iPhone is necessary; one should install them immediately as soon as they’re rolled out. However, sometimes, a buggy update or customization with unnecessary features can frustrate the users, making them regret installing the update.

In this situation, iPhone users can downgrade the iOS version to eliminate the issues with the latest iOS version. This guide discusses the ultimate way to install unsigned IPSW without SHSH blobs. You can also read downgrade iPhone via SHSH Blobs or save SHSH2 Blbos before iOS 17 update for future downgrade or jailbreak.