Re: i bricked mi 47 dj!!!! i think
The drive will be bricked, Jungleflasher did the same to my 47! it dumped the original firmware without any issues but it froze when flashing ixtreme.
I went by the book and I still managed to brick it!!
I sent it to a guy but he couldn't fix it, your best bet as said above is to buy a new drive and use the key from the hitachi to spoof the new drive.
I have flashed many Samsung's MS25/28 and had no issues using iprep.
The hitachi's are right sodds to do! avoid them if you can.