INTRODUCTION Need to make perfect clones of MIFARE Classic® 4K 7-Byte UID cards and tags ? Our UID Modifiable "Magic" MIFARE Classic® Compatible 4K Direct Write tags are what you need. Our UID Modifiable "Magic" MIFARE Classic® Compatible 4K Direct Write tags are designed for users who need to create perfect clones with changeable UIDs. These tags offer reliable performance and compatibility with all major RFID tools and platforms. Technical Specifications Feature Information Notes Chipset MIFARE Classic® Compatible Memory Size 4K UID Size 7 Byte UID Modifiable ✔️ Multiple times Chip Generation Gen 2 Chipset Generation Guide Write Method DirectWrite Write Capabilities UID Modifiable Unlock Required DirectWrite / Block 0 One Time Write Notes ✔️ ✔️ Device Compatibility Compatibility UID R/W Config Notes Flipper Zero ✔️ ✔️ ✔️ Proxmark / iCopy-X ✔️ ✔️ ✔️ Android & iOS ✔️ ✔️ ✔️ MTools Recommended LibNFC ✔️ ✔️ ✔️ ChameleonUltra ✔️ ✔️ Requires Mtools Premium Hands on: See the card in action LibNFC - change UID To update the UID of the badge, simply write the dump contents to the badge. nfc-mfclassic w a u /tmp/4K.dmp Proxmark - change UID To update the UID of the badge, simply write the dump contents to the badge. When using wrbl - you are directly modifiying the card's configuration. Ensure that all data is correct including BCC - otherwise you will brick your card. hf mf wrbl --blk 0 -k FFFFFFFFFFFF -d 04112233445566184200626364656667 # Where 04112233445566 is the UID Live Demonstration Unbricking "Soft-bricking" refers to when a magic card has been configured in a way that prevents it from being detected. Ways of soft-bricking tags include: Incorrect BCC Incorrect SAK Incorrect ATQA Incorrect ATS Incorrect ACL (Access Control) Values IMPORTANT: Lab401 cannot provide refunds under any circumstances for cards that were 'bricked' due to incorrect configurations.
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