: Apple stops "signing" older iOS versions shortly after new updates. If you are trying to downgrade to an unsigned version, the SHSH request will fail because Apple's servers will not authorize the install.

. This provides a deeper level of communication that can sometimes bypass query failures. Check USB Connection

The "Unable to request SHSH" error in 3uTools typically occurs at the 9% mark during the flashing or restoring process

If you're behind a firewall or using a proxy, try disabling it temporarily to see if it's interfering with your request.

He tried again. Same error. He switched USB ports. Restarted his PC. Disabled his firewall. Used a VPN to spoof a US connection. Nothing.