Atty Lock only works in Temperature Protection mode, with Ni200 wire (or possibly Ti, if you set it up in Escribe properly; Steam Engine could assist with the values). If you can apply Atty Lock, you are in Temp Protect mode and you need to lock the device, hold the up and down buttons until you can change temp value and then press "UP" until the value displayed goes past 600 and to OFF. Once temp protect is "OFF", you can set the wattage and the output of the device won't change. At that point, it's a regulated Mod without Temp Protect and without Atty Lock.