Mifare mulitple tags cannot check keys

[Pilgrimsmaster]

@amal

flash the firmware by running ./pm3-flash-all to keep your firmware consistent with your client version.

@Iceman

May I suggest
make -j

it will allow for parallel compiling and goes faster

cd proxmark3

git pull

make clean && make all

make -j

./pm3-flash-bootrom

./pm3-flash-fullimage

pm3