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Hello!
I'am using Proxmark3 Easy and I am trying to program the em4237 chip with ISO13569.
The problem is that after the login command (E4), the device disables the hf field and the chip resets to normal mode.
Any custom command requires entering secure mode which is impossible in that case.
However, help to the RAW command describes -k option "keep signal field ON after receive" but it doesn't work. The results are the same.
Interestingly, with the hf14a this option works which is indicated by a constant blue light on the device.
Is there anything I can do? Is there an option to make changes to the firmware to make this feature work?
Best regards, Rafał
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