error 018

IF that error is hardware failure, just not say this:
Check soldering of all Jtag wires" means check whether all wires are soldered according to pinout in Software. and say this
Check soldering of all Jtag wires, make them as short as possible (max 3-5 CM length) and try to connect again. Try to connect with different Jtag speed values. Try to connect with and without fully charged battery.

many box user complaining errror 018 but box maker dont know the right solution.