Sometimes your computer caches bad routing paths or malicious tools have altered your hosts file to block Apple. Open as an Administrator. Type ipconfig /flushdns and press Enter .
If you are getting the error while the phone is in "Normal" mode, try putting the device into before clicking Flash. 3uTools provides a guide on how to enter DFU mode based on your specific iPhone model. Can you flash "Unsigned" firmware?
Is the iOS version still green on IPSW.me? Update: Are you on the latest version of 3uTools? Connection: Did you disable your VPN and Firewall? 3utools Error Unable To Request Shsh
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This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Sometimes your computer caches bad routing paths or
: Apple responds by sending back a signed validation certificate (an APTicket or SHSH blob).
This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. If you are getting the error while the
Understanding why this digital handshake breaks down can help you isolate the fix quickly:
When using 3uTools to flash, upgrade, or downgrade your iOS device, encountering the error is frustrating. This error typically halts the flashing process at around 9% or 10%, leaving your iPhone or iPad unable to complete the iOS installation.
If it is marked with a , Apple has stopped signing this version. You cannot flash it using standard methods unless you have locally saved SHSH blobs from the past. 2. Update 3uTools and iTunes Drivers
If you are flashing an iPhone 4, 3uTools includes a "Force Downgrade" safety net. When the Unable to Request SHSH error appears, the software will prompt you: "Do you want to perform a forced downgrade?" You must click "Yes." However, be warned that if you force downgrade an iPhone 4 without blobs, the phone will lack cellular service (baseband) and will require a "Tethered Boot" every time it powers off, meaning you must connect it to a computer to restart it.