"Unable to request SHSH" error in 3uTools typically occurs during the flashing process (often at the 9% mark) when the software cannot get a digital signature from Apple's servers to authorize the firmware installation. Core Fixes for the SHSH Error Update 3uTools to the Latest Version
In this detailed guide, we will break down exactly what SHSH blobs are, why 3uTools fails with new firmware, and step-by-step solutions to resolve the error—even if Apple has just stopped signing the previous version.
However, if you have a jailbroken device, you can (blobs currently on your device) using: