The file is a specialized firmware rescue tool used to recover HTC Vive Base Station 2.0 units that have suffered from internal software errors, typically signaled by a blinking red light or a failed firmware update. Overview of Calibration Rescue
This file is strictly for 2.0 (curved-faced) base stations. Using it on 1.0 (flat-faced) base stations can cause permanent hardware damage. Where to Find the File
C:\Program Files (x86)\Steam\steamapps\common\SteamVR\tools\lighthouse\firmware\lighthouse_tx\archive\htc_2.0 Recovery Procedure
If your base station is blinking red or not detected, follow these steps to use the rescue file: One of the Base Station for HTC Vive is blinking red
The rescue file is typically included with your installation. You can locate it by navigating to the following directory on your PC: