This is the UID changeable Mifare Ultralight Card.
The UID can be modified ONLY with an external device (PN532 BLE, ACR122U, Proxmark3 RDV4, Proxmark3 X, or iCopy-XS).
The UID cannot be changed with NFC on Android or iOS devices.
Windows Program Download Link: PCSC_Mifare_Secure.
Notice: Google Drive may recognize the PCSC Mifare Secure program as a virus cause it can detect the USB devices which it’s necessary to connect the reader. Absolutely it’s a clean and powerful program. Download the zip file with the browser on PC.
Change UID with Proxmark3 X and iCopy-XS
Command hf mfu setuid --uid xxxxxxxxxxxxxx
Change UID with PN532 or PCR532
➜ ~ nfc-mfultralight -h Usage: nfc-mfultralight r|w <dump.mfd> [OPTIONS] Arguments: r|w - Perform read or write <dump.mfd> - MiFare Dump (MFD) used to write (card to MFD) or (MFD to card) Options: --otp - Don't prompt for OTP Bytes writing (Assume yes) --lock - Don't prompt for Lock Bytes (OTP) writing (Assume yes) --dynlock - Don't prompt for Dynamic Lock Bytes writing (Assume yes) --uid - Don't prompt for UID writing (Assume yes) --full - Assume full card write (UID + OTP + Lockbytes + Dynamic Lockbytes) --with-uid <UID> - Specify UID to read/write from --pw <PWD> - Specify 8 HEX digit PASSWORD for EV1 --partial - Allow source data size to be other than tag capacity
I am very satisfied with it.With libnfc it works perfectly on a linux operating system.I can also make clones with it, not just modify its uid.
Commands:
1.nfc-mfultralight -h
2.nfc-mfultralight r original.dmp (original card)
3.nfc-mfultralight w original.dmp –full (magic card)
4.nfc-mfultralight r copy.dmp (magic card)
5.diff original.dmp copy.dmp
Excellent. The UID can be changed by Proxmark3 with hf gen3uid command.