TechTool Pro 2.5.4 to 2.5.5 Updater

Version 2.5.5
File Size 2.1 MB
Release Date: 8/10/2000

Description: This update will update version 2.5.4 of TechTool Pro to version 2.5.5. You MUST have version 2.5.4 of TechTool Pro 2 installed in order to apply this updater. If you have an earlier version of the program, you will need to download and apply one of the TechTool Pro 2.5.4 updaters first. TechTool Pro 2 owners are eligible for upgrade pricing to the current version of TechTool Pro by contacting our sales department by email to


  • Improved detection and repair routines for Volume Structures.
  • Fixed Optimization date bug for HFS and HFS+ volumes.
  • Fixed AutoPilot Suite crash on Mac OS 8.1 or earlier.
  • Fixed “OTUtilityLib” issue on Mac OS 8.1 or earlier.
  • Fixed SCSI scanner detection bug.
  • Updated DNA file.

For complete change list, see the ReadMe file.

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