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Terry Cox
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November 14, 2026 at 10:16 pm in reply to: [Solved] Restore Error {err} in Finder / iTunes on iOS 18.0.1: Diagnostic steps and permanent fix #13284
Terry Cox
Certified Tech (Lvl 5)Apple Recommended / Verified Community SolutionThis canonical solution was verified and marked as solved in the Apple Support Community archive.Direct Thunderbolt connection, forcing true DFU mode, and executing an in-place software update or Configurator revive.
Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:
- Never select ‘Restore’ if data is unbacked-up; always select Update.
- Use an authentic Apple USB-C 60W/240W cable connected directly to Mac ports (no hubs).
- Enter true black-screen DFU mode and execute an Apple Configurator Revive Device pass.
Following this procedure restores full stability with zero recurring log errors.
Apple Vision Pro (512GB) | MacBook Pro 16″ M3 Max | Magic Trackpad | Paris, FRApple Certified Support Professional (ACSP) | visionOS Spatial Computing DeveloperTerry Cox
Certified Tech (Lvl 5)Apple Recommended / Verified Community SolutionThis canonical solution was verified and marked as solved in the Apple Support Community archive.Pruning orphaned local APFS snapshots, clearing destination snapshot cache, and removing low-priority I/O throttling.
Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:
- Stop backup daemon:
sudo tmutil stopbackup && sudo killall -9 backupd. - Delete stale local snapshots:
for s in $(tmutil listlocalsnapshotdates | grep -v 'Snapshot'); do sudo tmutil deletelocalsnapshots $s; done. - Disable CPU throttle during sync:
sudo sysctl debug.lowpri_throttle_enabled=0.
Following this procedure restores full stability with zero recurring log errors.
Apple Vision Pro (512GB) | MacBook Pro 16″ M3 Max | Magic Trackpad | Paris, FRApple Certified Support Professional (ACSP) | visionOS Spatial Computing Developer -
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