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Jordan Peterson
Find answers from other Apple users or start a discussion about your device.
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November 14, 2026 at 9:10 pm in reply to: [Solved] MacBook Pro 14″ M3 encountering macOS Installer Error: ‘An error occurred preparing software update’ after update (macOS Sequoia 15.1) #12397
Jordan Peterson
Community ContributorApple Recommended / Verified Community SolutionThis canonical solution was verified and marked as solved in the Apple Support Community archive.Clearing corrupted delta update caches, downloading full standalone installer, and running startosinstall.
Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:
- Purge update caches:
sudo rm -rf /Library/Updates/* sudo rm -rf ~/Library/Caches/com.apple.SoftwareUpdate/* - Download full installer:
softwareupdate --fetch-full-installer --full-installer-version 15.1. - Execute terminal installer:
sudo /Applications/Install macOS Sequoia.app/Contents/Resources/startosinstall --agreetolicense --forcequitapps.
Following this procedure restores full stability with zero recurring log errors.
Mac Studio M2 Max (32GB) | EIZO ColorEdge CG279X | Wacom Intuos Pro | Ottawa, ONApple Certified Support Professional (ACSP) | Commercial Photographer & DigitechNovember 14, 2026 at 8:52 pm in reply to: [Solved] How to fix Apple Pencil Pro Squeeze & Hover Gesture Failure caused by Digitizer sensor BLE calibration handshake desynchronization on iPad Air 11″ M2 #12131Jordan Peterson
Community ContributorApple Recommended / Verified Community SolutionThis canonical solution was verified and marked as solved in the Apple Support Community archive.Forgetting Bluetooth device, cleaning magnetic inductive strip, and recalibrating Squeeze threshold.
Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:
- In Settings > Bluetooth, tap (i) next to Apple Pencil and select Forget This Device.
- Wipe magnetic charging edge of iPad and flat edge of Apple Pencil with microfiber cloth.
- Force restart iPad (Vol Up, Vol Down, hold Top button). Re-attach Pencil to recalibrate.
Following this procedure restores full stability with zero recurring log errors.
Mac Studio M2 Max (32GB) | EIZO ColorEdge CG279X | Wacom Intuos Pro | Ottawa, ONApple Certified Support Professional (ACSP) | Commercial Photographer & Digitech - Purge update caches:
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