Whenever a new iOS version comes out that you might want later, use 3uTools to save its SHSH blobs immediately. It's quick and easy. You can find the option in and then hit the save button.
Understanding why this error happens and knowing how to troubleshoot it can save you hours of frustration. Below is a comprehensive guide to diagnosing and fixing this common 3uTools issue. Understanding the "Unable to Request SHSH" Error
The "Unable to request SHSH" error in 3uTools typically occurs at the