: Writing Engineering Change Announcement (ECA) or rework numbers and box build dates to the EEPROM.
The tool originally existed as a floppy disk image but is now commonly converted into a bootable USB drive. Thinkpad Hardware Maintenance Diskette Version 1.76
: For many older models, you must mash the Esc key several times during the initial splash screen to temporarily disable write protection on the EEPROM, allowing you to save changes. Critical Commands and Syntax : Writing Engineering Change Announcement (ECA) or rework
: Writing the 20-digit Machine Type, Model, and Serial Number (S/N) into the system's EEPROM. Thinkpad Hardware Maintenance Diskette Version 1.76
: Testing features like audio or erasing the Predesktop Area. Creating and Booting the Utility