galaxy eyes photon ruling question

ok,
1.i have GEPD on the field atk a facedown mon and activate GEPD eff,thus the facedown mon going back to field facedown or face up?
2.if i atk ryko or any mon that got eff when got atk,thus GEPD eff come first or my opp eff first?
3.GEPD vs traps like mirror force d.prison..
4.GEPD VS utopia..

thanks in advanced,find me in DN meazurali89

1. It's banished Face-Down and returns face-down

2. GEPD Removes before Monsters that are attacked are Flipped Face-up

3. You can chain GEPD to any card that is activated in response of the attack during Battle Step.

4. You can chain GEPD to Utopia and remove them.

1. Card should be banished face down since GEPD's quick effect happans before the damage step (where the set monster would be flipped)
2. Ryko doesn't flip based on the above and it would really help if you got more specific here.
3. GEPD can chain to dprison or mirror force. Dprison or mirror force can chain to GEPD. And if they do, you can chain GEPD again in the same chain.
4. you can chain GEPD to utopia's effect. GEPD only gains attack x the number of materials detatched by its banishing effect, so if utopia had to materials and used its effect, detatching is a cost, so it would have lost 1 material when banished, so gepd would gain only 500 attack and not 1000.