Vista beta builds simply cannot be updated, or it's more simply to say no one update created for vista rtm cannot be installed on any beta build.~The name of the topic was changed~
Old name was:
Vista RC2 (Beta builds) Force Updating
It's that absolutely true - the answer is NO!
Here on my new project I want to show you some samples:
Windows Installer 4.5 (final rtm build) for vista installed on RC2 build 5840.
Windows Internet Explorer 9 (final rtw build) for vista installed on RC2 build 5840.
Next are Ultimate Extras+
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UPDATE 1:
Windows Internet Explorer 9 (final rtw build) for Windows 7 installed on Pre-M1 build 6469.
I'm pretty sure for the following:
Windows Internet Explorer 9 on Vista Beta Builds and Windows 7 Beta Builds is not allowed to install because that will be bad commercial for Microsoft.
However I'm also pretty sure that I can make IE 9 Custom Setup, so All of you can test it on different Vista/7 Betas.
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Update 2:
Also Windows Installer 4.5 (RTM) will be re-packed to Custom setup for Vista Beta builds.