VirtueMart_allinone Update

[teobgeno]

Although i download com_virtuemart.2.0.4_ext_aio.zip  VirtueMart_allinone in admin panel was 2.0.3 and prompt me for an update.
I change at /administrator/components/com_virtuemart_allinone/install.xml 
the tag <version status="final">2.0.3</version> 

at <version status="final">2.0.4</version> 

This value must be forgotten when the version changed.Correct me if i am wrong

[oshells]

I tryed to update, but got this error:

        Failed loading XML file
        /home/domain_path/tmp/com_virtuemart_update/virtuemart.xml
        XML: Document is empty
        XML: Start tag expected, '<' not found
        JInstaller: :Install: Cannot find Joomla XML setup file

        Invalid package type. The update can not proceed.

[Studio 42]

I tryed to update, but got this error:

        Failed loading XML file
        /home/domain_path/tmp/com_virtuemart_update/virtuemart.xml
        XML: Document is empty
        XML: Start tag expected, '<' not found
        JInstaller: :Install: Cannot find Joomla XML setup file

        Invalid package type. The update can not proceed.

IN general case this is because you dont unzipped the files and installed the full package.
the file to install are
com_virtuemart.2.0.4.zip
com_virtuemart.2.0.4_ext_aio.zip