Only firmware versions highlighted in Green are actively being signed. If the version you are trying to flash is in Red , Apple will reject the SHSH request, and you cannot use it. You must download the latest signed firmware instead. 2. Update 3uTools to the Latest Version
The "Easy Flash" method is great for quick restores but may not be robust enough to handle SHSH request errors. how to fix error unable to request shsh on 3utools when new
If your desired version is green, proceed. If it is red, you cannot fix this error , as Apple has stopped signing it. 2. Update 3uTools to the Latest Version Only firmware versions highlighted in Green are actively
Temporarily disable your third-party antivirus software (e.g., Avast, McAfee, Bitdefender). Turn off temporarily. If it is red, you cannot fix this
The error message glowed in the harsh light of the desk lamp: "Unable to request SHSH."
Your version of 3uTools does not recognize the hardware identifier (ECID) of a newly released phone model.