New implant, proxmark not seeing anything

hi, I just got my implant today and while nfc-tools can see the nfc chip, writing is failing. tagwriter is saying that it needs to be formatted but i’m not sure exactly how to do that or if I risk bricking it.

in addition, I can not get the proxmark3 to detect anything on either hf or lf. i’ve tested the proxmark and I know that it works, just not finding anything with the NeXt v2.

i did just get my implant like 2 hours ago so is it just that it needs to heal more before being usable? the end goal is to clone my 26 bit hid 10301 card to it and use it for our fob readers at work.

am i just being impatient or am I missing an important part of setup?

Yes absolutely healing time is critical.

Also you might consider a booster board if your proxmark is an easy model from us and HF is being annoying after 3-4 weeks of healing. Typically you’ll start to see improved performance after 1-2 weeks but it might take double that for some people.

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Hi Amal,

my implant is reading much better now and i’ve been able to set up the lf side for a weigand hid fob, as well as setting up the hf side for an nfc tag, but i’m still having trouble with the proxmark3. I got a booster board, but after i installed it, hw tune is saying that the hf antenna is unusable. it still works with the original antenna though. my friend has one as well with a booster and that one also said unusable. switched it back to the original antenna and it works again. any advice?

screenshot of hw tune and firmware versions attached

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If your PM3 has the antenna in the middle board, I think it may not be compatible with the booster boards, they’re intended for the PM3 variants with the HF antenna in the main board as I understand it

It’s supposed to be used in conjunction with the stock HF antenna, not replace it

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sorry, I meant the mid-board. I did the same thing as amal’s video here https://www.youtube.com/watch?v=oyQCFYT8eJ0

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Can you post some pictures of both sides of the stock mid-board?

Some PM3 variations have the HF antenna there

If your PM3 is from DT then that shouldn’t be the case I believe

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The problem is that the firmware code that analyzes the antenna performance is not designed to accommodate the booster board, so it gets erroneous readings. A similar effect would happen if you placed a transponder on the antenna when trying to get tuning data.

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was just about to update, I didn’t realize that the hw tune would fail with the booster board and it seems to be working fine

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We’ll put a better notice on the booster board product page about this… but it’s important to also point out that hw tune does not “tune” the antennas… it does not change or adjust performance at all, it simply tells you the performance characteristics of the antennas installed. Because some models can swap out or literally switch (with a small switch) antenna characteristics, this is an important firmware feature… but also open source hardware being mass manufactured by a maelstrom of faceless unknown factories across China means they (and you) need a solid way to verify performance of these notoriously picky components, particularly in troubleshooting situations.

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thank you for all the help!

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