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#1 2020-07-10 23:08:46

cloversf
Contributor
Registered: 2020-07-10
Posts: 3

hf 15 info * does not find tag on a second read

Hi All,

I am experiencing a strange problem. Any guidance would be deeply appreciated. I’m using rdv4.01 from hackers warehouse and using rrg/iceman for windows compiled July 9, 2020. The firmware has been updated and driver installed. The precompiled binaries would give the same result.

In running the command “hf 15 info *” the tag would be found and identified if it is the first time. However, running the exact same command a second time, the result is "tag not found".  Resetting the hw “hw reset” and connect to pm again using “hw connect p com5” would allow the tag to be found again but not a second time.

The session is copied and pasted below.  Any insights would be appreciated. Thank you!

One more note.  PM3 official version works correctly.

Clover


[usb] pm3 --> hw ver

[ Proxmark3 RFID instrument ]

[ CLIENT ]
  client: RRG/Iceman/master/release (git)
  compiled with MinGW-w64 10.1.0 OS:Windows (64b) ARCH:x86_64

[ PROXMARK3 RDV4 ]
  external flash:                  present
  smartcard reader:                present

[ PROXMARK3 RDV4 Extras ]
  FPC USART for BT add-on support: absent

[ ARM ]
  bootrom: RRG/Iceman/master/v4.9237-593-g8934fd52 2020-07-09 13:16:14
       os: RRG/Iceman/master/v4.9237-593-g8934fd52 2020-07-09 13:16:21
  compiled with GCC 9.2.1 20191025 (release) [ARM/arm-9-branch revision 277599]

[ FPGA ]
  LF image built for 2s30vq100 on 2020-02-22 at 12:51:14
  HF image built for 2s30vq100 on 2020-01-12 at 15:31:16

[ Hardware ]
  --= uC: AT91SAM7S512 Rev A
  --= Embedded Processor: ARM7TDMI
  --= Nonvolatile Program Memory Size: 512K bytes, Used: 259680 bytes (50%) Free: 264608 bytes (50%)
  --= Second Nonvolatile Program Memory Size: None
  --= Internal SRAM Size: 64K bytes
  --= Architecture Identifier: AT91SAM7Sxx Series
  --= Nonvolatile Program Memory Type: Embedded Flash Memory

[usb] pm3 --> hf search
[|]No known/supported 13.56 MHz tags found
[usb] pm3 --> hf 15 info *
[+] Detected UID E0 07 A0 00 60 CF 03 3F
[!] iso15693 card doesn't answer to systeminfo command
[usb] pm3 --> hf 15 info *
[!] No tag found
[usb] pm3 -->

Last edited by cloversf (2020-07-10 23:19:08)

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#2 2020-07-11 10:05:11

fazer
Contributor
Registered: 2019-03-02
Posts: 69

Re: hf 15 info * does not find tag on a second read

Hi Cloversf, I noticed the same problem as you recently, sometimes he finds me the tag with the cmd hf search, sometimes he does not find it, I tried with several different cards same problem, hf 15 info * , reply as you tag not found. I'm on Ubuntu, I did the last update on Friday, my proxmark3 & 4.0 version, I checked antenna lf ok, hf ok I don't know why. Other people would have to try to see.
Have a good day.

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#3 2020-07-11 10:57:19

iceman
Administrator
Registered: 2013-04-25
Posts: 6,654
Website

Re: hf 15 info * does not find tag on a second read

Try some distance between tag and antenna.

I am middle in the process of merging the fpga changes from offical repo,  which gives much better stability for ISO15693 & iCLASS tech.


If you feel the love,  https://www.patreon.com/iceman1001

modhex(hkhehghthbhudcfcdchkigiehgduiehg)

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#4 2020-07-11 18:39:20

fazer
Contributor
Registered: 2019-03-02
Posts: 69

Re: hf 15 info * does not find tag on a second read

Hi Iceman, ok many thanks .
Good-evening.

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#5 2020-07-13 00:20:46

cloversf
Contributor
Registered: 2020-07-10
Posts: 3

Re: hf 15 info * does not find tag on a second read

Thanks Iceman!

I have also tried 0-3" without success.  Thanks for your help.


iceman wrote:

Try some distance between tag and antenna.

I am middle in the process of merging the fpga changes from offical repo,  which gives much better stability for ISO15693 & iCLASS tech.

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#6 2020-08-17 18:16:08

fazer
Contributor
Registered: 2019-03-02
Posts: 69

Re: hf 15 info * does not find tag on a second read

Hello Iceman, thank you very much for the work, for me everything is ok now as before.
Good night.

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#7 2020-08-17 19:09:58

iceman
Administrator
Registered: 2013-04-25
Posts: 6,654
Website

Re: hf 15 info * does not find tag on a second read

Good thing it works.


If you feel the love,  https://www.patreon.com/iceman1001

modhex(hkhehghthbhudcfcdchkigiehgduiehg)

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