The iCopy‑XS with the new firmware based on the latest Proxmark3. I spent some time fine‑tuning the settings to ensure full compatibility with Hitag2 fobs, especially Paxton, because the iCopy‑XS uses a different LF antenna than the original Proxmark3. Everything now works correctly. For reliable operation, you only need to attach a small strip of aluminum foil to the back cover of the device. There is also, of course, a plugin that enables cloning Hitag2 fobs.
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Does any of those changes improve the generic / rdv4 too?
I’ve been experimenting with the settings for reading Paxton Bullet on the iCopy‑XS. I had to attach a strip of aluminum foil to the back of the device (the foil strip can also be placed inside the device enclosure). At first I managed to get the Paxton UID to read — once it showed PCF7936 and the next time PCF7961, which was obviously incorrect. After adjusting the settings further, I finally got the block reading working properly. I tested both read and write — no errors at all. I think the device is now really solid when combined with your repository and the latest Proxmark3 updates. Thank you very much for your time and for all the work you’ve put into improving Proxmark3.
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Another modification — the aluminum foil strip is no longer needed.