A stable connection is required to reach Apple's verification servers.
If you’ve tried all eight methods and still see "Unable to request SHSH on 3uTools when top," you are likely facing a hardware or iOS limitation: how to fix error unable to request shsh on 3utools when top
Sometimes, standard mode is not enough for 3uTools to read the device's ECID correctly, especially if the iOS is glitching. While usually saving SHSH doesn't require DFU mode, forcing the device into a different state can refresh the USB connection logic. A stable connection is required to reach Apple's
Temporary disable Windows Defender or third-party antivirus software that may flag 3uTools as suspicious. how to fix error unable to request shsh on 3utools when top
Before anything else, ensure the iOS version you want is still being signed.