what is everyone on about
hf mf cload is for gen1a cards.
for your gen2 implant you need hf mf restore and hf mf wrbl —b 0
run each of them with the -h flag to build your command. you will need to supply the keyfile for the gen2 and the data file of the original. for block 0 writing (the uid block) you need to attach the —force param.