Good news! PCMTuner team has updated the pcmtuner smart dongle. They have removed the encrypted chip, no overheat issue anymore.
The old dongle can get hot, but it is normal because it is LED.
Check the new usb dongle
pcmtuner dongle that comes with pcmtuner device (Item Number SE157)
pcmtuner usb dongle (SE157-S)
What is the difference between PCMtuner and PCMtuner Dongle?
Pcmtuner is a complete hardware device with future expandability linked to the pcmtuner software suite. The dongle allows you to run the pcm flash modules etc.