Resolving the "Error Unable to Request SHSH 3utools 9 Updated" Issue: A Comprehensive Guide
Check Device Connection: Ensure that your iOS device is properly connected to your computer and recognized by 3uTools. Try using a different USB port or cable if necessary.
If you are specifically trying to flash or downgrade to iOS 9, it is almost certainly no longer signed
Solution 4: Use a Different DNS Server
The most common reason for this error is that Apple has simply stopped signing the iOS version you are trying to save blobs for.
Solution 3: Verify Device Information