[Q] Help!!! Flash F400K dll file to D855, no network!!

i use LGflash tool and i accidently flash whith f400k.dll file when i have D855 phone (i dont have any idea way or who it's let my to do that, bat it's happen...).
now my phone modell is 855RE and when i use the flash tool whith the D855 dll file it's say i have diffrent modle (d855RE not D855).
please help my, i dont have any network!!!