Current command:
hf mf csetblk --help
Set block data on a magic gen1a card usage: hf mf csetblk [-hw] -b <dec> [-d <hex>] options: -h, --help This help -b, --blk <dec> block number -d, --data <hex> bytes to write, 16 hex bytes -w, --wipe wipes card with backdoor cmd before writing examples/notes: hf mf csetblk --blk 1 -d 000102030405060708090a0b0c0d0e0f