As title says, when entering a new key on Dallas 01 formmat there should be an option to calculate or warning about wrong checksum.
Work-arround if one doesn’t know how to calculate the checksum is to cretae a key, write it to a physical button, read it, get a warning from flipper stating the correct expected checksum and correct it on the created key.
This can be of use to people using flipper to generate random keys.
For example i have "master"keys and i want to insert user keys so instead of buying read only keys i can make random keys on rw buttons and add those to the system as user keys. Creating keys with wrong checksum will not work.