What are your temp and watts set to? The device will always display "protection" in VT mode when the coil temperature is higher than the set temperature. This is the whole concept of temperature control
vaping and completely normal. In VW mode, however, it should not display protection under normal operation. I'm still using the stock firmware, so I can't speak for the upgraded firmware devices, but mine definitely doesn't show protection when
vaping in watts mode. Per the Joyetech manual, the only time "protection" should appear is in VT mode. All indications of malfunction display unique error phrases. Like "over 10 s protection", "weak battery", "atomizer low", "atomizer short", and "quit chain
vaping your device is too hot". Okay, so the last one might be partially exaggerated, but you get the idea. "Protection" is meant for VT only, and should not appear in VW mode unless it's a software bug.