Users have reported that the "Easy Flash" method sometimes triggers this bug, while the "iTunes Flash" option within 3uTools can bypass it successfully. 4. Network and Hardware Check
3uTools requires the iPhone to be in a predictable state. If your device is in a boot loop, in DFU mode with corrupted drivers, or simply not authenticated properly via USB, the SHSH request will fail.
If you've followed these steps and still receive the "Unable to request SHSH" error, it is likely that the window for that specific iOS version has closed forever. In the world of iOS, timing is everything!
This asks Apple for a signature for the current signed firmware.
The most common reason for this error is trying to flash a version of iOS that Apple no longer supports.
Modified network redirect paths in your Windows Hosts file frequently block Apple server communication—especially if you have used other jailbreak or hacking tools in the past. Press Windows Key + R to open the Run dialog box.
A stable internet connection is the backbone of the SHSH request.
SHSH (Signature HaSH) blobs are small digital signatures that Apple issues when you install iOS. Think of them as a unique handshake between your specific device and Apple's server. When you restore or update your iPhone, iTunes (or Finder) asks Apple, "Is it okay to install this iOS version?" Apple checks if that version is "signed." If yes, it issues a signature—the SHSH blob.
Several factors can contribute to the "unable to request SHSH blobs" error with 3uTools:
The "Unable to request SHSH" error in 3uTools is a gatekeeper, but it's one you can navigate with the right knowledge. Start with the basics: update your software and check your connections. Then, understand that the root cause is often Apple's signing window, not a problem with your computer. For a more reliable and modern experience, tools like and TSS Saver are significantly better options for actually saving and managing your SHSH blobs.
This is a great alternative if you only need to save blobs and want to avoid installing more software. TSS Saver is a free, web-based tool created by developers Conan and tihmstar.
If you are already running an older, unsigned firmware and want to save the blobs for that specific version, you need to use a tool like Dumping blobs (available for older A11 devices and below).
Users have reported that the "Easy Flash" method sometimes triggers this bug, while the "iTunes Flash" option within 3uTools can bypass it successfully. 4. Network and Hardware Check
3uTools requires the iPhone to be in a predictable state. If your device is in a boot loop, in DFU mode with corrupted drivers, or simply not authenticated properly via USB, the SHSH request will fail.
If you've followed these steps and still receive the "Unable to request SHSH" error, it is likely that the window for that specific iOS version has closed forever. In the world of iOS, timing is everything!
This asks Apple for a signature for the current signed firmware.
The most common reason for this error is trying to flash a version of iOS that Apple no longer supports.
Modified network redirect paths in your Windows Hosts file frequently block Apple server communication—especially if you have used other jailbreak or hacking tools in the past. Press Windows Key + R to open the Run dialog box.
A stable internet connection is the backbone of the SHSH request.
SHSH (Signature HaSH) blobs are small digital signatures that Apple issues when you install iOS. Think of them as a unique handshake between your specific device and Apple's server. When you restore or update your iPhone, iTunes (or Finder) asks Apple, "Is it okay to install this iOS version?" Apple checks if that version is "signed." If yes, it issues a signature—the SHSH blob.
Several factors can contribute to the "unable to request SHSH blobs" error with 3uTools:
The "Unable to request SHSH" error in 3uTools is a gatekeeper, but it's one you can navigate with the right knowledge. Start with the basics: update your software and check your connections. Then, understand that the root cause is often Apple's signing window, not a problem with your computer. For a more reliable and modern experience, tools like and TSS Saver are significantly better options for actually saving and managing your SHSH blobs.
This is a great alternative if you only need to save blobs and want to avoid installing more software. TSS Saver is a free, web-based tool created by developers Conan and tihmstar.
If you are already running an older, unsigned firmware and want to save the blobs for that specific version, you need to use a tool like Dumping blobs (available for older A11 devices and below).