The KC chips made breaking changes to some configuration registers, but v2.3.1 of the ST25 Tag Editor has no option for the KC variant, so some configuration registers are read/written incorrectly.

I opened a ticket in the ST online support system and was pointed to this forum for support.I have a device that uses the ST25DV64K and I'm talking to it using the ST25R3911B-DISCO board and the corresponding Discovery GUI from ST. The documentation ...