Download for DSL-520B Product Overview: DSL-520B_Datasheet Firmware Publish Date Language Version Download 05/14/2010 English Modifications and Bug Fixes "*BETA* - Modified ADSL PHY Version - Added Bridge PPPoE Frames feature - Add DlinkDDNS support - Enable DHCP Server in Bridge mode " Publish Date Language Version Download 10/30/2008 English Modifications and Bug Fixes - Enhanced ADSL synchronization- Support TR-069 (without SSL)- Fixed popup with an unknown error message