RFID ring not writing properly [SOLVED]

According to the results of the “lf tune” I seem to have the ring in the proper place. This placement of the ring gives the best results. Bellow is me trying to wipe and then rewrite again.

┌──(motoko㉿iwakura)-[~]
└─$ pm3
[=] Session log /home/motoko/.proxmark3/logs/log_20210719.txt
[+] loaded from JSON file /home/motoko/.proxmark3/preferences.json
[=] Using UART port /dev/ttyACM0
[=] Communicating with PM3 over USB-CDC

██████╗ ███╗ ███╗█████╗
██╔══██╗████╗ ████║╚═══██╗
██████╔╝██╔████╔██║ ████╔╝
██╔═══╝ ██║╚██╔╝██║ ╚══██╗
██║ ██║ ╚═╝ ██║█████╔╝ Iceman :coffee:
╚═╝ ╚═╝ ╚═╝╚════╝ :snowflake: bleeding edge

GitHub - RfidResearchGroup/proxmark3: RRG / Iceman repo, the most totally wicked repo around if you are into Proxmark3 and RFID hacking

[ Proxmark3 RFID instrument ]

[ CLIENT ]
client: RRG/Iceman/master/v4.9237-3969-gc45331e1e 2021-05-31 18:40:07
compiled with GCC 10.2.1 20210110 OS:Linux ARCH:x86_64

[ PROXMARK3 ]
device… RDV4
firmware… RDV4
external flash… present
smartcard reader… present
FPC USART for BT add-on… absent

[ ARM ]
bootrom: RRG/Iceman/master/v4.9237-3969-gc45331e1e 2021-05-31 18:40:33
os: RRG/Iceman/master/v4.9237-3969-gc45331e1e 2021-05-31 18:40:46
compiled with GCC 8.3.1 20190703 (release) [gcc-8-branch revision 273027]

[ FPGA ]
LF image built for 2s30vq100 on 2020-07-08 at 23:08:07
HF image built for 2s30vq100 on 2020-07-08 at 23:08:19
HF FeliCa image built for 2s30vq100 on 2020-07-08 at 23:08:30

[ Hardware ]
–= uC: AT91SAM7S512 Rev A
–= Embedded Processor: ARM7TDMI
–= Internal SRAM size: 64K bytes
–= Architecture identifier: AT91SAM7Sxx Series
–= Embedded flash memory 512K bytes ( 59% used )

[usb] pm3 → lf t5 wipe
[=] Target T55x7 tag
[=] Default configuration block 000880E0

[=] Begin wiping…
[=] Writing page 0 block: 00 data: 0x000880E0
[=] Writing page 0 block: 01 data: 0x00000000
[=] Writing page 0 block: 02 data: 0x00000000
[=] Writing page 0 block: 03 data: 0x00000000
[=] Writing page 0 block: 04 data: 0x00000000
[=] Writing page 0 block: 05 data: 0x00000000
[=] Writing page 0 block: 06 data: 0x00000000
[=] Writing page 0 block: 07 data: 0x00000000
[usb] pm3 → lf search

[=] NOTE: some demods output possible binary
[=] if it finds something that looks like a tag
[=] False Positives ARE possible
[=]
[=] Checking for known tags…
[=]
[+] EM 410x ID 2021020023
[+] EM410x ( RF/64 )
[=] -------- Possible de-scramble patterns ---------
[+] Unique TAG ID : 04844000C4
[=] HoneyWell IdentKey
[+] DEZ 8 : 00131107
[+] DEZ 10 : 0553779235
[+] DEZ 5.5 : 08450.00035
[+] DEZ 3.5A : 032.00035
[+] DEZ 3.5B : 033.00035
[+] DEZ 3.5C : 002.00035
[+] DEZ 14/IK2 : 00137992732707
[+] DEZ 15/IK3 : 000019398656196
[+] DEZ 20/ZK : 00040804040000001204
[=]
[+] Other : 00035_002_00131107
[+] Pattern Paxton : 538328611 [0x20163E23]
[+] Pattern 1 : 526880 [0x80A20]
[+] Pattern Sebury : 35 2 131107 [0x23 0x2 0x20023]
[=] ------------------------------------------------

[+] Valid EM410x ID found!

[=] Couldn’t identify a chipset
[usb] pm3 → lf search

[=] NOTE: some demods output possible binary
[=] if it finds something that looks like a tag
[=] False Positives ARE possible
[=]
[=] Checking for known tags…
[=]
[+] [H10301 ] HID H10301 26-bit FC: 206 CN: 20128 parity ( ok )
[+] [ind26 ] Indala 26-bit FC: 3300 CN: 3744 parity ( ok )
[=] found 2 matching formats
[+] DemodBuffer:
[+] 1D555955556696A596A66555

[=] raw: 0000000000000020059c9d40

[+] Valid HID Prox ID found!

[=] Couldn’t identify a chipset
[usb] pm3 → lf hid clone -r 20059c9d40
[=] Preparing to clone HID tag using raw 20059c9d40
[=] Done
[?] Hint: try lf hid reader to verify
[usb] pm3 → lf search

[=] NOTE: some demods output possible binary
[=] if it finds something that looks like a tag
[=] False Positives ARE possible
[=]
[=] Checking for known tags…
[=]
[+] EM 410x ID 2021020023
[+] EM410x ( RF/64 )
[=] -------- Possible de-scramble patterns ---------
[+] Unique TAG ID : 04844000C4
[=] HoneyWell IdentKey
[+] DEZ 8 : 00131107
[+] DEZ 10 : 0553779235
[+] DEZ 5.5 : 08450.00035
[+] DEZ 3.5A : 032.00035
[+] DEZ 3.5B : 033.00035
[+] DEZ 3.5C : 002.00035
[+] DEZ 14/IK2 : 00137992732707
[+] DEZ 15/IK3 : 000019398656196
[+] DEZ 20/ZK : 00040804040000001204
[=]
[+] Other : 00035_002_00131107
[+] Pattern Paxton : 538328611 [0x20163E23]
[+] Pattern 1 : 526880 [0x80A20]
[+] Pattern Sebury : 35 2 131107 [0x23 0x2 0x20023]
[=] ------------------------------------------------

[+] Valid EM410x ID found!

[=] Couldn’t identify a chipset
[usb] pm3 →

OMG, it works now! Thank you guys SO much! I just kept doing the “lf t5 wipe” over and over and then it finally worked!

Y’all are lifesavers!

Sorry for being stupid - I can’t thank you all enough! I owe you both a drink! <3

@amal & @Zwack

1 Like

Next time you might also try switching the Q factor on the LF antenna… certain coupling challenges can be resolved by adjusting the Q factor of the antenna.

1 Like

You are welcome. It definitely sounds like a coupling issue. A different antenna might work better.

1 Like

Y’all legends! <3