If you are moving data into a specific Windows folder and receive Error 13, that folder may be locked down to "Read-Only" status.
This is a more technical but highly effective fix. If the error occurs only when accessing a specific folder (e.g., your Downloads or a specific external drive), you need to take ownership.
: Using a non-MFi certified (counterfeit) or broken USB cable, or a faulty USB port.
Before fixing the problem, it helps to understand the root cause. Error Code 13 in 3uTools generally falls into one of three categories:
In technical terms, this is a permission error (often referred to as or EACCES ), which occurs when an application lacks the necessary credentials to read, write, or execute a specific file or folder path.
Navigate to the or Backup settings tab (depending on whether you are downloading firmware or backing up a device).
If the problem persists after trying these steps, ensure your 3uTools software is updated to the latest version, or try completely reinstalling the utility to repair any broken system paths. To help narrow down the exact cause, tell me:
Try using the default Files app on iPhone or iCloud to manage files temporarily.
