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It is a pretty old thread, but just adding update as this one gets listed part of google search results towards the top ... Hoping it would help someone in need ...Initially I too had little tough time in locating the firmware update. But just go to DLink site and change the Country to relevant option ... here it is India ...There I could find the page for DIR 600M and firmware is listed on Support tabhttp://www.dlink.co.in/products/?pid=675Latest Firmware as of 20170309: ftp://support.dlink.co.in/firmware/DIR/DIR-600M.zip