The usbkey returned status word 0x6300 represent verification failed.but in iso7816.c file, the error table "sc_card_error iso7816_errors[]"，I don't know why status word 0x6300 represent "State of non-volatile memory changed"?  Bcoz In ISO7816-4 7.5.1 last paragraph shows "In this group of commands, SW1-SW2 set to '6300' or '63CX' indicates that the verification failed ". 

can anyone give me the answer ?

regards