D-Link → Dlink DSL-G624T doesn't respond after firmware downgrade!!

Please help!I tried to downgrade yesterday the firmware of this router and after restart it doesn't respond!!The status light keeps blinking and the power light is on.No other light except from the lan if i connect it to the computer.I doesn't make hard reset,it does acutally NOTHING when i press the reset button.I tried to follow the recovery guide that dlink offers but nothing again.My pc receives an i p starting like that 169.254.....I don't know the ip of the router!Please give me yours lights!