Got again my iPhone 4 stuck,I restored it few ago and then it didn't came on the emergency only screen,so I can activate it.It appears the Apple logo for few time and turns off automatically,Do it like 4 times in a minute when the iPhone is plugged in.Tried Greenpois0n and Redsn0w also but still doesn't work,Anyone mind help me out?Woudl appreciate.
First you need to give more specific info. What do you mean restore? Were you doing itunes restore or on the iphone menu "reset all settings and contents" thing? what fw on it? Was it jailbroken? If it was jailbroken did you have shsh for any fw?
Put in dfu mode and connect to itunes an restore it again. You should be fine. If it keeps giving same problem, take it to the apple store they will replace your iphone.
OP problem is that his i4 was unlocked before. Now he did a restore and his Baseband is updated so he is locked to a official carrier. Also OP just use GreenPosi0n to jailbreak. You don't need to use redsn0w.