Note down your device's or EID number from the 3uTools device information page.
: Ensure the iOS version you are trying to install is still being "signed" by Apple. You cannot request SHSH for versions Apple has closed.
If you have ever used third-party modification tools or older jailbreak software, your computer's network configuration might be misdirecting requests meant for Apple's servers.
Ensure your PC has a completely stable, wired internet connection rather than erratic Wi-Fi to keep the cryptographic stream from timing out. Alternative Solutions If 3uTools Fails how to fix error unable to request shsh on 3utools when new
: Brand new iPhone models have advanced hardware security. 3uTools often requires a few weeks to release software patches that support SHSH fetching for newly released phone generations. To help narrow down the cause, let me know: What iPhone or iPad model are you using? What iOS version are you trying to flash? Are you trying to upgrade or downgrade the firmware?
For advanced users, this script-based tool supports saving blobs even for unsigned versions if you have a jailbreak that allows setting a boot nonce.
Connect your device to your computer and follow the on-screen instructions in 3uTools to put it into DFU (Device Firmware Update) mode. The screen will remain black, but 3uTools will recognize it. Note down your device's or EID number from
The error "Unable to request SHSH" means 3uTools failed to get a valid signature. For a or new iOS version , this is almost always due to Apple no longer signing the iOS version you’re trying to install .
Before trying any technical fixes, you must ensure Apple is still signing the firmware you want to install. Apple only signs the latest one or two iOS versions.
Ensure your PC is connected to a stable internet connection (a wired Ethernet connection is preferred over Wi-Fi during a device flash). 5. Flash the Device in DFU Mode If you have ever used third-party modification tools
By following the fixes in this guide—updating the software, checking signing status, changing request sources, or using alternative tools like TSS Saver—you can successfully save SHSH blobs for any still-signed iOS version.
I can provide the specific steps or alternative tools for your exact device setup. Share public link
(like an iPhone 15 or 16 series), 3uTools may need a specific update to support the newest chipsets' SHSH request protocols. Always ensure you are on the latest version (V3.11 or higher as of 2026). ⚠️ A Note on Downgrading
