About the use of NFC 3320 reader to change the DESfire Light card read/write key, can you help to answer the question:
When the DESfire Light card is modified using NFC 3320 reader, the read/write key of the light card can only be changed from all 0 (the default value) to 1. The read/write key of the light card cannot be changed from 1 to 2 or all 0 (the default value).
However, this is not the case when changing the master key. You can change the master key from the default value to the value 1, or change the value 1 to the default value.
What could possibly be the reason for this?
