INTRODUCTION MIFARE Classic® Compatible 1K tag - UID Changeable Please note: Sold in a pack of 5 Need to make perfect clones of MIFARE Classic® Compatible 1K cards and tags ? Our UID Modifiable "Magic" MIFARE Classic® Compatible 1K tags are what you need. Technical Specifications Feature Information Notes Chipset MIFARE Classic® Compatible Memory Size 1K UID Size 4-bytes UID Modifiable ✔️ Multiple times Chip Generation Gen 1a Chipset Generation Guide Packaging 5 per pack Delivered in an anti-static bag Write Capabilities UID Modifiable Unlock Required DirectWrite / Block 0 One Time Write Notes ✔️ ✔️ Supports "unlocked" read/write Device Compatibility Compatibility UID R/W Config Notes Flipper Zero ✔️ ✔️ ✔️ Proxmark / iCopy-X ✔️ ✔️ ✔️ Android & iOS ✔️ Non-Block0 writing supported by all devices LibNFC ✔️ ✔️ ✔️ ChameleonUltra ✔️ ✔️ ✔️ Writing via MTOOLS Hands on: See the card in action See the MIFARE Classic® Compatible 1K UID Modifiable's functionality : Unlocked Read, Unlocked Write and UID Modification in LibNFC LibNFC - change UID nfc-mfsetuid 00000000 -f # Replace 00000000 with the UID LibNFC - Unlocked Read This chipset supports "unlocked reading" - reading the badge contents without knowing the sector keys nfc-mfclassic R a u /tmp/1k.dmp LibNFC - Unlocked Write This chipset supports "unlocked writing" - writing the badge contents without knowing the sector keys nfc-mfclassic W a u /tmp/1k.dmp Proxmark / iCopy-X hf mf csetuid 00000000 # Replace 00000000 with the UID 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 Classic® Compatible 1K UID Modifiable is "soft-bricked", you can try recovering it with the following methods: With Proxmark / iCopy-X hf mf csetuid --uid 11223344 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.