Rooting Docomo S3 (SC-O6D) I can't seem to find a way to root my android device. I have tried every rooting method that I can find on the Internet for the SC-O6D, everyone of them after flashing are supposed to reboot the phone back into Android with root. But everyone I flash the phone reboots and no root? Anyone think they know what is going on?
There is a binary in /system/bin which continuously  checks for root and immediately remves it again, as soon as root is detected. Chainfire root tools used to have an automated removal tool affecting this security binary. You can also do it by hand.

I do not know it by hard, the name of the binary. But you could extract the auto-root in the link below and you will know it.
Or you can simply use it.

http://download.chainfire.eu/248/CF-Root/CF-Auto-Root/CF-Auto-Root-d2dcm-sc06d.zip

Have fun!