description updated to match with the wsdl

Author: sujithhanwha

doc/Core.xml

@@ -5007,21 +5007,25 @@ onvif://www.onvif.org/name/ARV-453
       </section>
       <section xml:id="_Ref276040130">
         <title>GetAvailableFirmwares</title>
-        <para>This operation retrieves a list of available firmware versions for the device. A device may support firmware list retrieval through the GetAvailableFirmwares command.</para>
-        <para>The returned list contains firmware information including name, description, and optional download URL. The firmware names returned can be used with firmware upgrade operations.</para>
+        <para>This operation retrieves a list of available firmware versions for the device.</para>
+        <para>The returned list contains firmware information including name, description, and optional information about release date, whether its official one and whether its a bridge firmware essential for upgrade or downgrade. The firmware names returned can be used with firmware upgrade operations.</para>
         <variablelist role="op">
           <varlistentry>
             <term>request</term>
             <listitem>
               <para role="param">OnlyOfficial - optional [xs:boolean]</para>
               <para role="text">Optional flag to filter only official firmware versions. If not specified or set to false, all available firmware versions are returned.</para>
             </listitem>
+            <listitem>
+              <para role="param">IncludePreviousVersions - optional [xs:boolean]</para>
+              <para role="text">Optional flag to include previous firmware versions in the response. If not specified or set to false, only the latest versions are returned.</para>
+            </listitem>
           </varlistentry>
           <varlistentry>
             <term>response</term>
             <listitem>
               <para role="param">FirmwareInfo [tds:FirmwareInfo] optional unbounded</para>
-              <para role="text">List of available firmware versions. Each FirmwareInfo contains:</para>
+              <para role="text">List of available firmware versions.</para>
             </listitem>
           </varlistentry>
           <varlistentry>