: Loose or damaged USB cables, or faulty USB ports on the PC.
: Always use an official Apple MFi-certified Lightning or USB-C cable.
Antivirus programs can misinterpret the flashing process as a security threat, cutting the connection. 3utools error unable to restore idevice--75-
: Open 3uTools and click Check Update in the bottom-right corner to ensure you have the latest bug fixes.
Software mismatches between 3uTools and the Windows driver environment can trigger error -75. : Loose or damaged USB cables, or faulty USB ports on the PC
Check your to ensure no Apple servers (like gs.apple.com ) are being redirected. 5. Rule Out Hardware Failure
Most "Unable to restore" errors are fixed by ensuring a stable path for data. : Open 3uTools and click Check Update in
: If using a desktop, plug the cable into the rear USB ports directly on the motherboard. Avoid using USB hubs or front-panel ports, which often provide lower power and less stability. 2. Refresh Drivers and Software