XCTU ver. 5.2.8.6 installer Last old-gen version of XCTU: Contains features from previous versions, plus adds support for XBee Wi-Fi modules, Compatible with Windows 2000, XP, 2003, Vista, 7. Does not support the Digi XLR PRO.
XCTU ver. 5.1.0.0 installer This older version of X-CTU is required for XStream Ethernet RF modems, as well as XCite RF modules and modems.
X-CTU 5.1.0.0 is compatible with Windows 2000, XP, 2003 only.