standalone MEGA 2560

Hi,
I have checked the firmware and it is v1.0.7 (from the device manage - USB\VID_1FFB&PID_0081&REV_0107&MI_04)

I am using the Arduino IDE and I selected Tools->Burn Bootloader and I get this error:

avrdude: stk500v2_command(): command failed
avrdude: initialization failed, rc=-1
Double check connections and try again, or use -F to override
this check.

Is it a hardware wiring connection error? Or my procedure is wrong?