: Most SHSH request failures are caused by outdated software that lacks compatibility with newer iOS versions or Apple server changes. Downloading the Latest Version of 3uTools is the most frequent fix for devices like the iPhone 15 Pro.

Remember: SHSH blobs are your ticket to downgrading or restoring custom firmwares in the future. Investing a few minutes to understand and fix this error will pay off the next time Apple forces an update you don’t want.

This can bypass certain temporary Apple-side restrictions, but only for still-signed firmwares.

He took a deep breath. He right-clicked on the SHSH2 button again.