Question [Q] [Help] Hardbirck I9152

Hello everyone
I have a galaxy mega 5.8 i9152..i want to root it... after i flash the root file using odin after that the phone is dead
i can't turn it on or i can get it on download mode or recovery mode... i try to use the jig method but not working..
I read some info that you can debrick it using a sdcard and special debrick file
Please help!!!!!!!!!!!!!
sorry for my bad English...
Thanks