XCPUScalar trial editions only has been released as shareware. You are free to try it out, but to support the developer community and this project, Immiersoft recommends you register for a small fee to get bug fixes and enhancements from the following link below.
Download from here, registered and trial versions:
From Handango
XCPUScalar 2007 Version 3.03 for all 195, 312, 400, 416, 520 and 624MHz XScale or OMAP Pocket PC's
XCPUScalar Version 2.32 for Samsung i700 phone
XCPUScalar Version 2.3 for iPaq 1910, 1915, 1920
From PocketGear
XCPUScalar 2007 Version 3.03 for all 195, 312, 400, 416, 520, and 624MHz XScale or OMAP Pocket PC's
XCPUScalar Version 2.88 for PC2002 XScale Pocket PC's
XCPUScalar Version 2.32 for Samsung i700 phone