INTRODUCTION Need to make perfect clones of MIFARE Ultralight-C® cards and tags ? Our UID Modifiable "Magic" MIFARE Ultralight-C® Compatible tags are what you need. The tag will function as a standard MIFARE Ultralight-C® compatible tag. Despite their advanced functionality, they have perfectly tuned antennas for optimised performance. Technical Specifications Feature Information Notes Chipset MIFARE Ultralight-C ® Compatible Memory Size 148 Bytes UID Size 7 Byte UID Modifiable ✔️ Multiple times Chip Generation Gen 1a Chipset Generation Guide Packaging 1 Card per Pack 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-C® Compatible UID Modifiable can be used with several tools: LibNFC - change UID To change the UID of your Ultralight-C® Compatible 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-C® 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 LibNFC - 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 Some "soft-brick" situations can be resolved with special commands. If your MIFARE Ultralight-C® 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.
