: Use the Repair Driver utility in the 3uTools "Toolbox" tab to ensure your PC communicates correctly with your device.
: This is the most effective solution. Outdated versions of 3uTools often lose compatibility with updated Apple server protocols. You can update by clicking Check Update at the bottom right of the 3uTools interface.
How to Fix "Unable to Request SHSH" Errors in 3uTools If you are trying to save your SHSH blobs to downgrade or preserve your iOS version and keep hitting the "Unable to request SHSH" error in 3uTools, you aren't alone. This is a common hurdle for jailbreakers and enthusiasts. Usually, this happens because Apple has stopped "signing" the firmware you're targeting, but there are several other technical bottlenecks that could be the culprit.
Ensure your computer's hosts file isn't redirecting Apple's server requests (common if you've used other jailbreak tools). 5. Use External SHSH Sources (Advanced)
: You can only flash iOS versions that Apple is currently "signing". Green checkmark in 3uTools: Signed and flashable.
Click "Check for Updates" in the bottom right corner of the 3uTools interface. Developers frequently release patches specifically to fix SHSH retrieval bugs when Apple changes their server protocols. 5. Use "Fetch Normal Mode SHSH" vs. "Query SHSH" 3uTools has different methods for grabbing blobs.