PM3 Commands Reference (Iceman Firmware):

Updated: January 2025

Main Help

Up One Level

---

Current command:
lf pcf7931 write --help

---

This command tries to write a PCF7931 tag.

usage:
    lf pcf7931 write [-h] -b <dec> -i <dec> -d <hex>

options:
    -h, --help                     This help
    -b, --blk <dec>                [0-7] block number
    -i, --idx <dec>                [0-15] index of byte inside block
    -d, --data <hex>               one byte to be written

examples/notes:
    lf pcf7931 write --blk 2 --idx 1 -d FF      -> Write 0xFF to block 2, index 1