Set icon for custom extension using wix

I have read a tons of materials on this subject, but still I can't do it. I'am enclosing relevant info from my .wxs file.

<?xml version="1.0" encoding="UTF-8"?>
<Wix xmlns="http://ift.tt/1cKQ1oM"
     xmlns:util="http://ift.tt/18LfQpH"
     xmlns:netfx="http://ift.tt/1fbCTwJ"
     xmlns:bal="http://ift.tt/1iVN5Yd">

     <?include Some.wxi ?>

  <Product Id="*" Name="Product" Language="1033" Codepage='1252' Version="$(var.PluginVersion)"  UpgradeCode="SomeCode">  

    <Feature Id="ProductFeature" Title="SomeTitle" Level="1" Description="SomeDescription" ConfigurableDirectory='INSTALLFOLDER'>      
      <ComponentRef Id="MYICON.ico"/>
    </Feature>

  <DirectoryRef Id="INSTALLFOLDER">
    <Component Id="MYICON.ico" Guid="*">
        <File Id="MYICON.ico" KeyPath="yes" Checksum="yes"/>
    </Component>    
  </DirectoryRef>

  <Icon Id="MYICON.ico" SourceFile="MYICON.ico" />

  <ComponentGroup Id="ProductComponents">         
      <Component Id="_CmpId_00002_x86" Directory="INSTALLFOLDER"  Win64="no">       
        <!-- Registry -->
        <RegistryKey Root="HKLM" Key="Some key" ForceCreateOnInstall="yes" ForceDeleteOnUninstall="yes">
          <RegistryValue Name="Description" Value="The addin allows Excel to interact with server" Type="string" />
          <RegistryValue Name="FriendlyName" Value="Some Name" Type="string" />
          <RegistryValue Name="LoadBehavior" Value="3" Type="integer" />
          <RegistryValue Name="Manifest" Value="[INSTALLFOLDER]Some.vsto|vstolocal" Type="string" KeyPath="yes" />
          <RegistryValue Name="InstallationFolder" Value="[INSTALLFOLDER]" Type="string" />
        </RegistryKey>

        <ProgId Id="FileType" Description="File type for viewer" Icon='MYICON.ico'>
          <Extension Id="exte" ContentType="application/x-some">
            <Verb Id="open" Command="open" TargetFile="someBat.bat" Argument="&quot;%1&quot;"/>
          </Extension>
        </ProgId>
      </Component>
    </ComponentGroup>  

  </Product>
  </Wix>

Relevant information are related to MYICON.ico file. Installer is created successfuly, I also manage to install it but no effect on icon. When i create file with .exte, still no icon is assigned to it. Any idea what to do?