U3 Windows 7 update now available!

I have a Memorex Mini flash drive that came with U3 version 1, 0, 5, 17 preinstalled.  It ran great on Win XP but now I need to upgrade for my new PC running Win7.  I go to the update site and download the updater to my XP computer and plug in the flash drive, but when I run the installer it says the flash drive isn’t U3 compatible and I can’t load the software onto it.  How do I get the program to recognize the drive is U3 compatible and install the updated version?