I restored Iphone 4G with wrong SHS now it is stuck in DFU mood

[future-gate]

Hi every one
i gut an " locked " iphone 4G works with gevey sim
it was running on ipsw 4.2.1 just fine
i wanted to restore the iphone with the same IPSW " 4.2.1 "
i used tiny umbrella and saved SHSH
after i maked a custume firmware with i faith using the saved shsh and restored the phone it stucked on DFU mood " just a black screen
i cant even power of the phone and it dont even show recovery itunes icone and cant do nothing
i tried to restore many other ISPW but still the same
i recognized after a wile that i used the wrong SHSH
i hade another i phone wich is i saved it`s shsh once
and when i tride to save the new one shsh i pressed save all shsh so didnt see at once that all have shown was for the old one
so:
i restored my iphone with another iphone`s SHSH
and my iphone now restore with stok ISPW with errors and dont boot
stuck in DFU mood
and if try to restore with NO-BB ISPW it compleats but didnt reboot
only DFU mood too
plz help me
thanx for all