: Confirm the IPSW file you downloaded matches your exact device model.
: Ensure your computer has a stable internet connection, as 3uTools must communicate with Apple's servers to request the SHSH file. Repair Drivers : If updating doesn't work, go to the tab in 3uTools and use the iTunes Utility Repair Driver Use iTunes Flash Mode how to fix error unable to request shsh on 3utools when top
Instead of letting 3uTools request SHSH on the fly, you can manually fetch your device's SHSH blobs and save them locally. : Confirm the IPSW file you downloaded matches
However, if you meant you are trying to save SHSH blobs for downgrades (using the "Save SHSH" feature): how to fix error unable to request shsh on 3utools when top