Lol b4 u even open the 360 look at the case there is ALWAYS a plug for the cable that goes to your computer if it is JTagged. if so then open it to make sure there are those wires soldered to those points and do lead to that plug. u can also turn it on and on a jtagged xbox the way it starts is most likely differant then a normal. if the jtag has an xex menu or ur using freeboot. ull know for sure.