Problem settingg uid XM1+


#1

Hi,

I have a problem in setting the uid on my XM1+.
I’am trying to set the uid with my Proxmark3 RDV2.

proxmark3> hf search

UID : 00 00 00 00
ATQA : 00 04
SAK : 08 [2]
TYPE : NXP MIFARE CLASSIC 1k | Plus 2k SL1
proprietary non iso14443-4 card found, RATS not supported
Chinese magic backdoor commands (GEN 1a) detected
Prng detection: WEAK

Valid ISO14443A Tag Found - Quiting Search

proxmark3> hf mf csetuid deadbeef
uid:de ad be ef
Chinese magic backdoor commands (GEN 1a) detected
#db# read block send command error
Couldn’t get old data. Will write over the last bytes of Block 0.
new block 0: de ad be ef 22 00 00 00 00 00 00 00 00 00 00 00
#db# write block send data error
Can’t set block 0. Error: 2
Can’t set UID. Error=2

I have set the uid before to allezero’s before implanting the chip without a problem.

Any idea what is wrong here? It is one of the XM1+ Gen1 implants I which has been checked by DT.

Greetz,
Karl


#2

What version proxmark3 firmware you running?

Also, my hunch is that this is a coupling error… the default antennas on proxmarks are just terrible and writing takes some… finesse… especially with chinese mifare knock-off chips. Can you play with the antenna alignment?