INTRODUCTION Need to make perfect clones of MIFARE Ultralight® cards and tags ? Our UID Modifiable "Magic" MIFARE Ultralight® Compatible Direct Write tags are what you need. Technical Specifications Feature Information Notes Chipset MIFARE Ultralight® Compatible Memory Size User Writable: 48 Byte / 20 pages UID Size 7 Byte UID Modifiable ✔️ Multiple times Chip Generation Gen 2 Chipset Generation Guide Packaging 1 Card 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 or MIFARE++ Ultralight LibNFC ✔️ ✔️ ✔️ ChameleonUltra ✔️ ✔️ ✔️ Requires MTools Hands on: See the card in action The Ultralight® Compatible Direct Write UID Modifiable can be used with several tools: LibNFC - change UID To change the UID of your Ultralight® Compatible DirectWrite UID Modifiable tag with LibNFC, write a full tag dump to the tag, with the UID and BCC set appropriately. Do not use the nfc-mfsetuid tool to change the UID. This tool is built for MIFARE Classic® Chipsets, not MIFARE Ultralight® Chipsets - using the tool will permanently brick your tag. nfc-mfultralight w /tmp/ul.dmp --full # Replace ul.dmp with your FULL dump Proxmark / iCopy-X hf mfu setuid –uid 11223344556677 # Replace 11223344556677 with the UID Live Demonstration : LibNFC 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 Some "soft-brick" situations can be resolved with special commands. If your MIFARE Ultralight® Compatible UID Modifiable is "soft-bricked", you can try recovering it with the following methods: Via external reader/writer and MTOOLS Select the "UID Changer" function in MTools, select "bricked" and run the task IMPORTANT: Lab401 cannot provide refunds under any circumstances for cards that were 'bricked' due to incorrect configurations.
