That's always been a good question when it comes to
Saitek.... They have NEVER provided a Readme file to describe what has been changed from one version of their software to the next.
Suffice it to say that something was added, fixed or changed and 1.7 is the latest and greatest version. Also keep in mind that because the SGE software supports several different
Saitek controllers the changes may or maynot actually have anything to do with the controller you are using.
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Ron Hunt
saitekhelp.simhq.com