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Error 4013 iOS / iPadOS Update & Restore

Apple Finder / iTunes Error 4013 — USB Communication Drop

Reference ID: Error 4013 •
Quick Triage: Choose Update (never Restore) after connecting directly to a rear/side motherboard USB port with an original cable.

Error 4013 indicates the host OS lost connection with the device right after rebooting into restore mode. Common non-hardware causes include unpowered hubs, loose lint inside the port, or under 3 GB free NAND space.

Verification Steps

  1. Remove any Thunderbolt/USB-C hub or monitor pass-through.
  2. Force restart into Recovery Mode and trigger Finder Update twice before considering hardware diagnostics.
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