hmm, it's always possible for me to get the router in that special rescue state.
Just by unplugging the power cord - waiting few seconds - pluging it in in the same time the EZ-Setup button is pressed and releasing it as soon as the ready led shines. Then the remaining leds also begin to shine.
If you couldn't get in that state you won't be able to reflash your device due to the mising connectivity.
Sry ;(
Perhaps your device has some kind of defect that even made the first flash impossible.