flexDF [DESFire EV1 8k] lock

Is there any way to lock or password protect tags on the flexDF [DESFire EV1 8k]? All the android apps I’ve been using to wite to it won’t let me protect the tags from being a overwritten.

yes but it requires altering keys and key permissions. have you tried this app?

https://play.google.com/store/apps/details?id=com.skjolberg.mifare.desfiretool