[Q] Help Please galaxy s wifi 5.0 soft brick after flashing custom kernel topic

Hi everyone

First I am sorry for my poor English, it's not my first language :p

I was about to update kernel to rj's custom kernel through odin but it failed. So i rebooted the divice and got this image

i1290.photobucket.com/albums/b525/jigarmehta006/Samsung_Galaxy_S_Black_Screen_of_Death_zps9403e7af .jpg (sorry i can't post a image)

Now i can't even go to download mode.

I tried One click unbrick but it keep show the Unspecified error message: " Is your phone plugged in? Is it in download/soft brick mode? ..." (I installed heimdall and driver in the instruction)

Can you guys please tell me how to fix it. :)

My device is Samsung S wifi 5.0 YP-G70CW with physical home button, stock rom 2.3.6 and it isn't root.