samsung i747AT&T Resurrect problem

[yasir ali]

Hello sir,

Open serial port...OK
Connecting to the RIFF Box...OK
Firmware Version: 1.37, JTAG Manager Version: 1.56
Selected Resurrector: [Samsung I747 V1.0.5095.46594]

Connecting to the dead body...OK
Detected dead body ID: 0x706B50E1 - CORRECT!
Set I/O Voltage reads as 1.81V, TCK Frequency is RTCK
Adaptive Clocking RTCK Sampling is: [Sample at MAX]

Resurrection sequence started.
Establish communication with the phone...FAILED
ERROR(0x44): Communication is not established. Terminating.

plz help me