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Update firmware of MFRC522 based RFID card reader ?

Question asked by Davinder Singh on Aug 28, 2017
Latest reply on Aug 30, 2017 by Davinder Singh

I bought 100 pieces of RFID reader from a vendor for cheap. Now I got to know it is not compatible with our code which works fine with RFID readers with firmware Version: 0x92 =v2.0. 


The RFID reader I bought have firmware version 0x12=(unknown). 


RFID reader based on MFRC522


How can I update the firmware of my RFID card reader ? If it is possible then how can I do it ? what tools and software will I need to update the firmware on these RFID reader.  Please guide me NXP community.