mifare

PN532 in Emulation mode Authentication failure

Hi all, I am trying to configure PN532 in to Mifare emulation mode. I am using "ACR122U" reader for Mifare Emulation and "OMNIKEY CardMan 5x21-CL" as reader. I configured ACR122 as Mifare successfully. I got ATR and UID which i have set through program. But while i am trying to load key to the reader, exception has occured. In ACR122U, ...

How can I edit the content of my smart card?

Can you tell me please how can I edit the content of my smart card? How should I use APDU commands in order to edit the content? Lets say I have something like this on a smart card: 00 00 05 00 00 00 00 00 00 00 00 FF FF FF 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 and I want it to be : 00 00 06 00 00 00 00 00 00 00 00 FF FF FF 00...