If you want, I can draft a concise support message including logs and exact reproduction steps to send to 3uTools—tell me the diagnostic details and error text/screenshot.
If you are trying to downgrade to an older iOS version (for example, moving from iOS 17.0 to iOS 16.5) and you save SHSH blobs for that specific version while Apple was still signing it, you cannot fix this error. i unable to request shsh 3utools fix install
can help narrow down if the version you want is still signed by Apple. If you want, I can draft a concise
Update 3uTools to the latest version immediately to resolve the "Unable to request SHSH" error, as outdated versions often fail to communicate with Apple's verification servers. This error typically occurs when the firmware version you are trying to install is no longer "signed" by Apple, meaning they have stopped authorizing its installation. Troubleshooting Steps Verify Firmware Signing Status Update 3uTools to the latest version immediately to
When attempting to request SHSH blobs using 3uTools, users may encounter an error message or a situation where the tool fails to retrieve or save the necessary files. This issue can occur due to various reasons, including: