Naming conventions:
Product_type_h/wRevision_s/wRevision_ValidArea_language_datecode.extension
Product_Howto_language_ Theme-with-description.extension 

DES-6500_fw_revAll_350B27_ALL_en_080901.zip		Firmware 3.50B27

DES-6500_fw_revAll_360B07_ALL_en_101008.zip		Firmware 3.60B07