To fix the "Unable to Request SHSH" error (often occurring at 9% during a flash) on 3uTools, you must primarily ensure you are using the latest version of the software and that Apple is still signing the firmware you are attempting to install. Common Fixes
The error "Unable to request SHSH" means 3uTools could not establish a connection with Apple’s servers to get that digital signature. This is typically caused by: How To Fix Error Unable To Request Shsh On 3utools When
Steps:
Update 3uToolsMany SHSH errors are fixed by software updates. Open 3uTools, click Check Update at the bottom right, and install the newest version. To fix the "Unable to Request SHSH" error
Additional Tips and Tricks