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.
