New Post: Adobe Flash Plugin stays in 'Not Installed'

I created a update package for Adobe Flash Player 32-bit/64-bit Plugin 18.0.0.209 released this week and deployed it to some client computers. On creating the package I followed the procedure the pdf manual in the documentation section of this site. Then I tried to search any update at the client computer but couldn't find any update. Next I check updated plugins with Firefox, it says Adobe Flash Player is old(18.0.0.203, which I also installed with WSUS successfully). WSUS packager says the update is "not installed" to the computer. I have tried detect and report to two computers for several times but results were same.

What should I try next time?

*My environment
Client Computers: Windows 7 Enterprise & Professional SP1
Server OS: Windows 2008 R2 Standard
WSUS: 3.2.7600.226
WSUS Packager: 1.3.1504.15

*Package XML
<?xml version="1.0"?>

-<sdp:SoftwareDistributionPackage SchemaVersion="1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:drv="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/Installers/WindowsDriver.xsd" xmlns:usp="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/UpdateServicesPackage.xsd" xmlns:uei="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/Installers/UpdateExeInstallation.xsd" xmlns:sdp="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/SoftwareDistributionPackage.xsd" xmlns:msp="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/Installers/MspInstallation.xsd" xmlns:msiar="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/MsiApplicabilityRules.xsd" xmlns:msi="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/Installers/MsiInstallation.xsd" xmlns:lar="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/LogicalApplicabilityRules.xsd" xmlns:cmd="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/Installers/CommandLineInstallation.xsd" xmlns:bt="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/BaseTypes.xsd" xmlns:bar="http://schemas.microsoft.com/wsus/2005/04/CorporatePublishing/BaseApplicabilityRules.xsd" xmlns="http://www.w3.org/2001/XMLSchema">


-<sdp:Properties UpdateType="Software" CanSourceBeRequired="false" PublicationState="Published" VendorName="Adobe Systems, Inc." CreationDate="2015-07-12T06:43:57.499Z" PackageID="78162659-32ee-4c4d-a2eb-c5e9c8f5f8b8">

<sdp:MoreInfoUrl>http://helpx.adobe.com/security/products/flash-player/apsb15-18.html>

<sdp:SupportUrl>http://www.adobe.com/support/flashplayer/>

<sdp:ProductName>Adobe Flash Player</sdp:ProductName>

</sdp:Properties>


-<sdp:LocalizedProperties>

<sdp:Language>en</sdp:Language>

<sdp:Title>Adobe Flash Player 32-bit/64-bit Plugin 18.0.0.209</sdp:Title>

<sdp:Description>Adobe Flash Player 18 is the latest release of the Flash Player client runtime. This release also includes bug fixes and security enhancements. For more information about Flash Player 18, please visit the product page at http://www.adobe.com/products/flashplayer and the release notes at http://www.adobe.com/go/flashplayer_releasenotes>

</sdp:LocalizedProperties>


-<sdp:UpdateSpecificData UpdateClassification="Security Updates" MsrcSeverity="Important">

<sdp:SecurityBulletinID>APSB15-18</sdp:SecurityBulletinID>

<sdp:KBArticleID>APSB15-18</sdp:KBArticleID>

</sdp:UpdateSpecificData>


-<sdp:InstallableItem ID="93e5942e-a48a-4037-9a44-6a7152da03a5">


-<sdp:ApplicabilityRules>


-<sdp:IsInstalled>

<bar:RegSzToVersion RegType32="true" Data="18.0.0.209" Comparison="EqualTo" Value="Version" Subkey="Software\Macromedia\FlashPlayerPlugin" Key="HKEY_LOCAL_MACHINE"/>

</sdp:IsInstalled>


-<sdp:IsInstallable>


-<lar:And>

<bar:RegSzToVersion RegType32="true" Data="18.0.0.209" Comparison="LessThan" Value="Version" Subkey="Software\Macromedia\FlashPlayerPlugin" Key="HKEY_LOCAL_MACHINE"/>

<bar:RegKeyExists RegType32="true" Subkey="Software\Macromedia\FlashPlayerPlugin" Key="HKEY_LOCAL_MACHINE"/>

</lar:And>

</sdp:IsInstallable>

</sdp:ApplicabilityRules>

<sdp:InstallProperties RebootBehavior="NeverReboots" Impact="Normal" RequiresNetworkConnectivity="false" CanRequestUserInput="false"/>

<msi:MsiInstallerData MsiFile="install_flash_player_18_plugin.msi" ProductCode="{448d7dec-36f1-4091-b419-c5487bdeb867}"/>

<sdp:OriginFile OriginUri="https://fpdownload.macromedia.com/pub/flashplayer/current/licensing/win/install_flash_player_18_plugin.msi" Modified="2015-07-12T06:43:56.921Z" Size="19702272" FileName="install_flash_player_18_plugin.msi" Digest="96wg6NUZ8hRKHq818AA6BBmGL2g="/>

</sdp:InstallableItem>

</sdp:SoftwareDistributionPackage>

*Excerpt from WindowsUpdate.log

2015-07-15 10:09:43:149 1152 17d0 AU >>## RESUMED ## AU: Search for updates [CallId = {78E41070-8304-4711-9482-5A62E3B4FF09}]
2015-07-15 10:09:43:149 1152 17d0 AU # 0 updates detected