xBT reporting 42.5 C

Hey guys.

I installed the xBT yesterday and my Halo scanner had just arrived. It’s reporting my body temperature is 42.5c which would kill me. :joy: Is this normal? Is there a way to calibrate this?

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 :face_with_crossed_out_eyes:

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.

Where is your xBT located?

Is it consistently reading 42.5⁰C?

Have you tried reading at different clothing layer levels?
Will be hotter if you have been wearing an Artic style jacket vs a “wife beater”.

I would suggest you give it a few more days to heal and if you can, try another reader, or test your reader on another chip if possible.

Here some light reading whilst you heal

Hope that helped…

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Thanks for your response. I have the xBT installed just below the armpit in the recommended location. It’s currently reading 43c at the moment, but I have tried the reading with no shirt on for a little while and it didn’t really move. I don’t currently have another reader that can display the temperature.

My worry here is this chip has the casing around it to bond itself to the tissue and if this one is bunk I’d like to get it out before that starts to happen!

I was hoping I could find someone who has experienced this shortly after install, hoping it would be an issue with swelling but it doesn’t seem likely.

Would be super annoying to have installed a faulty chip but I guess that comes with the territory. :open_mouth:

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Do you have an xEM or product with a T5577 and a way to program it like a proxmark? You can program it to emulate an FDX-B chip with temperature data like the xBT and find out if it’s the chip or the Halo reader. Likely the chip but also nice to test.

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I can certainly get one of my NExT’s and reprogram it for testing. If the chip is faulty, how would I go about getting a replacement?

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I would suggest you get your testing done first and wait a few more days of healing

THEN, only if unsuccessful
go to

Hit the help :help: bottom right
create a ticket
Link to this thread

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I’ve got a Proxmark 3 and a T5577 card, but it’s the emulating part that leaves me stumped… Is it easy to do? Time to start digging.

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Try
lf fdxb clone --country 999 --national 1337 --animal

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you are a star. I was able to emulate the card with the additional –extended parameter which got the Halo reader to scan the card and provide a temp reading.

I then ran “lf fdxb reader -@” and held it against my armpit until I got a reading back. I then kept the reader in place and ran “lf fdxb reader” and it’s reporting

[+] Bio-Thermo detected

[=] temperature… 93.4 F / 34.1 C

And the Halo reader is reporting 42C!

So I think we can safely say it’s the Halo reader itself!!

I can’t thank you enough for your help so far - looks like I’ll return this Halo reader and just get a Flipper Zero lol! (need one anyway!)

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that’s what we are here for.

Good decision.

Thats what I use to read my xBT.

Super handy tool

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Just fyi the Halo people are very helpful and could probably supply a firmware fix if you engaged them. They provided another forum user with a custom firmware update one time for a personal project they were working on.

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I have seen how great they are to us in the forums before! Super cool to see a team who is willing to help. In this case, I needed a flipper zero anyway and it’s much smaller to carry around. Didn’t expect the Halo to be so big!

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