PM3 Commands Reference (Iceman Firmware):

Updated: January 2025

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Current command:
hf mfu setpwd --help

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Set the 3DES key on MIFARE Ultralight-C tag. 

usage:
    hf mfu setpwd [-k <hex>]

options:
    -h, --help                     This help
    -k, --key <hex>                New key (16 hex bytes)

examples/notes:
    hf mfu setpwd --key 000102030405060708090a0b0c0d0e0f