: A faulty cable or port can cause the data transfer to hang at the 9% mark. Use an original Apple Lightning or USB-C cable and try a different USB port on your computer. Alternative Tools

Above the shelf, he taped a sticky note that read:

Red versions are unsigned; attempting to force these via standard modes without local, historically saved SHSH blobs will fail at the 9% mark. 3. Shift from "Easy Flash" to "iTunes Flash" mode

Some users find success by copying the device's EID and pasting it into the target device field on sites like shsh.host to check for available tickets.

If you are on an early build of v9.0, perform a clean reinstall. Sometimes the update process corrupts the communication driver (Apple Mobile Device Support). 3. Disable Firewalls and Antivirus

Is your goal to , downgrade , or factory reset a boot-looped device? Share public link

If 3utools isn't working, you might consider trying other tools or methods to request SHSH blobs, such as:

Selecting the wrong firmware file (iPSW) for your specific iPhone model.

Swap out generic accessories for a certified, high-grade lightning or USB-C line.