The most common trigger is low battery voltage or a degraded battery that fails the restoration verification check.
Open the newly installed 3uTools, go to , and click Repair Driver to guarantee your Windows environment can communicate natively with Apple's restore protocols. 3. Erase and Reformat via External IPSW Package 3utools error unable to restore idevice--75-
Connect your device to the computer in or DFU Mode . The most common trigger is low battery voltage
If you are trying to downgrade (e.g., moving from iOS 17 back to iOS 16) or upgrade to a specific version, you check if Apple is still signing that version. Erase and Reformat via External IPSW Package Connect
: Use 3uTools to "Refresh iDevice Info" and check available space. If it's too full, you may need to perform a full flash rather than a standard update. Connection and Drivers