TechTool Pro 4.5.3 Updater

Version 4.5.3
File Size 25.6 MB
Release Date: 7/18/2007

This updater will ONLY update TechTool Pro 4.5.1, 4.5.2 to version 4.5.3. This updater is capable of updating the TechTool Pro 4 application that resides on the eDrive volume.
Current owners of TechTool Pro 4 can purchase the TechTool Pro 8 Upgrade for $39.99 from our online store or by contacting our sales department at 707-304-5993.


  • Updated Volume Structures and Optimization routines.
  • Updated Volume Journaling feature for Intel-based Macs.
  • Integration of the TechTool Pro 4 Security Patch.
  • Added compatibility for new Macintosh models up through June 2007.
  • Other minor changes and feature enhancements.

Version 4.5.1 and above requires Mac OS X 10.4.x.

For complete change list, see the ReadMe file.