Skip To Main Content

Toggle Close Container

Mobile Main Nav

Header Holder

Header Mobile Sticky

Toggle Menu Container

Toggle Schools Container - Mobile

Header Top

Header Right Column

More Languages

Header Right Bottom

Toggle Schools Container - Desktop

Header Sticky - Desktop

District Canvas Container

Close District Canvas

Desktop District Tabs

Mobile District Nav

Breadcrumb

A: Possibly yes. Error 13 often surfaces when users attempt to downgrade their iPhone software to an older version (using an older .ipsw file) that Apple is no longer "signing." Because the firmware is not authorized, the process fails with an error. Ensure you are installing a version of iOS that is still being signed by Apple.

Click and select a simple directory directly on your C: or D: drive (e.g., C:\3uToolsBackup ).

Temporarily disable your antivirus or add 3uTools to the in your security settings. 6. Hardware Check

Documented based on user reports and Windows system behavior as of 2025. For persistent issues, consult the official 3uTools support forum.

A loose data connection can cause mid-transfer drops, prompting 3uTools to lose its directory path and throw an access error.

Before we dive into the solutions, it's essential to understand the possible causes of the error. Some of the common causes include:

Sometimes the restriction is on the iPhone or iPad side, not the PC. your iOS device screen. Unplug the USB cable and plug it back in. Look for the "Trust This Computer?" pop-up on your device. Tap Trust and enter your passcode.

Ensure your PC’s destination drive has enough free space to hold the files you are transferring.