Mifare Classic Tool 2.3.1 [updated] -

After reading a tag, you can save the data as a "Dump" file. The editor allows you to modify the hex values offline before writing them back to a card. Security and Ethical Considerations

Always create a full dump of a card before attempting to write data. Writing incorrect data to the "Trailer Block" (the last block of any sector) can permanently lock that sector if the keys are overwritten with unknown values. mifare classic tool 2.3.1

For a phone to run MCT, it must possess an NXP NFC controller. Many modern devices use Broadcom controllers, which are physically incapable of communicating with the proprietary MIFARE Classic protocol. If your device is compatible, MCT 2.3.1 unlocks a deep level of control over RFID cards used in transit, access control, and loyalty programs. Key Features and Functionalities After reading a tag, you can save the data as a "Dump" file