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I send these raw commands:
AUTH TAG ( with default password )
nfc.transceive('1B FF FF FF FF')CHANGE DEFAULT PASSWORD
nfc.transceive('A2 85 AA BB CC DD')SET PACK
nfc.transceive('A2 86 EE FF 00 00')PROTECT ADDRESS 04 TO 81
nfc.transceive('A2 84 80 00 00 00')now how i can remove this password to back card can write ?
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