Always use an Apple-certified MFi cable. Third-party cables often fail during the heavy data load of a restore.
The -75 error is typically a communication breakdown between your computer and the iOS device, often triggered by hardware interruptions, driver issues, or faulty USB connections. Here is a step-by-step guide to troubleshooting and fixing the link. 1. Check Your USB Connection (The Most Common Culprit) 3utools error unable to restore idevice75 link
A corrupted firmware download can cause the restore to hang and time out. Always use an Apple-certified MFi cable
Alternatively, download the IPSW file directly from a trusted source like ipsw.me and use the button in 3uTools to select it manually. 6. Update 3uTools and iTunes often triggered by hardware interruptions