Changes
→Check for file version: new section
Exactly!
:: So do it! ;)
== Check for file version ==
Why are you having it check for the existence of the uninstaller? Checking firefox.exe's version would be more convenient. Obviously, firefox.exe's version number does not represent the Firefox version (e.g. 3.0.4), but the Gecko version (e.g. 1.9.0.3224).
So instead of
<code><check type="uninstall" condition="exists" path="Mozilla Firefox (3.0.4)" /></code>
we could have
<code><check type="file" condition="versiongreaterorequal" path="%PROGRAMFILES%\Mozilla Firefox\firefox.exe" value="1.9.0.3224"/></code>