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Not sure of the difference between artisan and the RoastLogger I run but I've run IDE 1.6.12 on one of my TC4's and reads the thermocouples just fine. I've also run aArtisanQ_PID 6.2 with the Android Bluetooth app and had no problem reading the thermocouples.
Now, the TC4 I mainly use on my regular roaster is the IDE right after they made that big change, something like 1.6.3 and the updated programs to run with that. I have made no updates or changes to that one since those changes came about a year or so ago. That one is dialed in so precise, I try not taking any chances on changing anything with updates unless it becomes absolutely necessary. It even has a dedicated laptop that I only use to run RoastLogger on. To try and help ensure nothing happens to that setup.