The most common fix for permission-based folder errors is granting the app full system rights. Close 3uTools completely. Right-click the . Select "Run as administrator" . Try the operation (flash or backup) again. 2. Change the Firmware/Backup Path
Follow the prompts to reinstall or repair the Apple Mobile Device Support drivers. 5. Verify Disk Space 3utools failed to access folder error code 13 new
If you continue to see specifically during the 20%–21% mark of a flash, it may transition into a hardware-related signaling issue. In these cases, try: How to fix 3utools error codes on any iOS device The most common fix for permission-based folder errors
The target drive (usually C:) lacks sufficient space to "unpack" the firmware or temporary files. Step-by-Step Fixes for "Failed to Access Folder" 1. Run as Administrator 3utools failed to access folder error code 13 new
