(soft?) bricked I9000 + broken home button

I will be as clear as possible:
1- bought a used galaxy s I9000 with a broken home button
2- Upgraded with samsung kies from 2.2.1 to official 2.3.6
3- After upgrade complete, got into download mode using Adb command
4- tried to root following this video https://youtu.be/ADiJslCEF3g
5- BRICKED
6- Phone cant get into download mode again using adb command.

please help?