TechTool Pro 16.0.4 Released

Version 16.0.4
File Size 296.2 MB
Release Date: 2/23/2023

How to apply this update: To perform this version update, launch an installed copy of the TechTool Pro 16 application and select the Check for Update… option located under the TechTool Pro 16 menu. To update an existing eDrive, boot to the eDrive and perform the Check for Update. Users who have purchased from this site may login to their account to download up-to-date versions of TechTool Pro, other users may access a direct download by registering their serial number.


  • Fixed Volume Structures test to prevent failed result if drive would fail to unmount quickly enough.
  • Fixed Volume Structures test to correctly verify and repair APFS formatted Time Machine volumes.
  • Fixed a soft crash in the TechTool Monitor system daemon.
  • Updated TechTool Monitor to display correctly in System Preferences for macOS 12 Monterey and earlier.
  • Updates to French, German, Italian, Japanese and Chinese (Simplified) localization.
  • Updated Bonjour manufacturer database for the Local Network tool.
  • Added model identification strings for the Check Computer configuration panel.
  • Other minor fixes and enhancements.

For complete change list, see the ReadMe file.

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