update xml looks like this when I updated manually a while back:
<?xml version="1.0" encoding="UTF-8"?>
<update_data_list>
<region id="us">
<np level0_system_version="03.600.000" level1_system_version="03.600.000" level2_system_version="03.600.000" map="03.600.000" />
<np_d level0_system_version="03.600.000" level1_system_version="03.600.000" level2_system_version="03.600.000" map="03.600.000" />
<version system_version="03.600.000" label="3.60">
<update_data update_type="full">
<image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
</update_data>
</version>
</region>
</update_data_list>
<?xml version="1.0" encoding="UTF-8"?>
<update_data_list>
<region id="us">
<np level0_system_version="03.600.000" level1_system_version="03.600.000" level2_system_version="03.600.000" map="03.600.000" />
<np_d level0_system_version="03.600.000" level1_system_version="03.600.000" level2_system_version="03.600.000" map="03.600.000" />
<version system_version="03.600.000" label="3.60">
<update_data update_type="full">
<image size="0">http://www.example.com/PSP2UPDAT.PUP</image>
</update_data>
</version>
</region>
</update_data_list>