hi, I am using samsung i7500. my device is also upgraded. the configuration is following: Firmware version: 1.6 baseband version: I7500XXJB2 kernel version: 2.6.29 root@sep-53 #1 build number: Donut.XXJB6 now i want to unlock my device. i want to access root. when i type su on the shell the following error appears su: permission denied help me! how can i solve it.