Totally normal for 42.5⁰C to kill you because the high heat denatures proteins and cell membranes causing widespread cellular damage, including the brain, kidneys, liver, and heart plus your blood will clot stopping blood flow to those vital organs…so yeah, totally normal to kill you.
In medical terms you would be fucked
This might be of interest
Sorry, just fucking with you.
No you cant physically / firmware calibrate the xBT, though that would be nice.
They are not super accurate, but not normally that far out as yours.
That MIGHT be the reason for reading so high.
I haven’t personally heard of any reading that high.
I would expect the results to be within a couple of ⁰ of normal.