This patch is for older XTi amps that cannot communicate with Band Manager or System Architect.
Detach, unzip and run the EXE file, then upload whichever file it asks for (the S file or the HEX file). After the upgrade, Band Manager/System Architect will be able to see the amp and complete the firmware upgrade to the most current version. Make sure you are using the most current version of BM/SA to ensure you are getting the latest firmware.
IMPORTANT NOTE: the CLoader.exe application will not run properly on Windows 7.