salute
this guy posted "my sgs is bricked!"

not long after that, his JIG is created, by any chance you are in electronic engineering field?

hi bestfol, try to look at this guide, hope it helps

IF ERROR: In case Odin does not start flashing and shows an error, your phone might go into the "download error" mode:



DON'T PANIC. This happens sometimes when there is a USB connection error.

First disconnect the USB cable from your phone.
Next shutdown your phone, by either: Press and hold the power button for about 30 seconds. The phone will power off. If it does not, just take out the battery and put it back in.


link to guide