TechTool Pro 2.5.3 to 2.5.4 Updater

Version 2.5.4
File Size 3.5 MB
Release Date: 4/3/2000

Description: This file will update TechTool Pro 2.5.3 to version 2.5.4. It will NOT update earlier versions. If you have a version earlier to 2.5.3, use the TechTool Pro 2.5.4 Universal Updater. TechTool Pro 2 owners are eligible for upgrade pricing to the current version of TechTool Pro by contacting our sales department by email to


  • Enhanced detection and repair routines in Volume Structure.
  • Improvements in TechTool Protection control panel.
  • Improved Finder Info testing.
  • New Mac model compatibility.
  • Mac OS 9.0.4 compatibility.

For complete change list, see the ReadMe file. 

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