hi I've got this DLink DIR-615 with the Firmware version 3.01 from "Wed, 10, Sep, 2008" obviously outdated, but when pressing the "Check Now" button for an update it says it's already updated, is there a way to get the latest firmware update, or an open source one? thanks

Dear customer,

could you please provide a screenshot from the Summary section
of the web interface of your router
(where hardware/firmware versions and build time are displayed)?

PS. We do not provide an open source version