MappleCare Community
Mary Miller
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November 14, 2026 at 11:31 pm in reply to: [Solved] iMac 24″ M3 encountering macOS Installer Error: ‘An error occurred preparing software update’ after update (macOS Sonoma 14.6) #14608
Mary Miller
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 Ultra (192GB) | Universal Audio Apollo x8p | Logic Pro 11 | Salt Lake City, UTApple Certified Support Professional (ACSP) | Logic Pro Audio Producer & Mixing EngineerNovember 14, 2026 at 10:24 pm in reply to: [Solved] Local LLM / MLX Framework Unified Memory Allocation Out-of-Memory Panic on macOS Sequoia 15.1: Diagnostic steps and permanent fix #13432Mary Miller
Community ContributorApple Recommended / Verified Community SolutionThis canonical solution was verified and marked as solved in the Apple Support Community archive.Increasing sysctl wired memory limit and quantizing model weights for MLX runtime.
Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:
- Increase sysctl wired unified memory limit:
sudo sysctl iogpu.wired_mem_limit=180000 - Load models using 4-bit or 8-bit quantization (e.g.
mlx-lm.generate --model mlx-community/Llama-3-70B-4bit). - Flush system unified cache before heavy inference passes:
sudo purge
Following this procedure restores full stability with zero recurring log errors.
Mac Studio M2 Ultra (192GB) | Universal Audio Apollo x8p | Logic Pro 11 | Salt Lake City, UTApple Certified Support Professional (ACSP) | Logic Pro Audio Producer & Mixing EngineerNovember 14, 2026 at 9:01 pm in reply to: [Solved] HomePod 2nd Gen Hub encountering HomeKit Location Automations ‘When Anyone Arrives’ Failing to Trigger after update (iOS 18.1) #12293Mary Miller
Community ContributorApple Recommended / Verified Community SolutionThis canonical solution was verified and marked as solved in the Apple Support Community archive.Re-authorizing HomeKit location services and setting Find My primary device.
Here is the exact step-by-step diagnostic and remediation procedure verified by Apple Certified Support Professionals:
- On iPhone, navigate to Settings > Privacy & Security > Location Services > System Services and ensure HomeKit is enabled.
- In Settings > [Your Name] > Find My, confirm My Location says ‘This Device’.
- In Home app, tap Home Settings > Location Services and toggle off, wait 10 seconds, and toggle back on.
Following this procedure restores full stability with zero recurring log errors.
Mac Studio M2 Ultra (192GB) | Universal Audio Apollo x8p | Logic Pro 11 | Salt Lake City, UTApple Certified Support Professional (ACSP) | Logic Pro Audio Producer & Mixing Engineer - Purge update caches:
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