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#1 2019-07-20 21:17:11

batman192
Contributor
Registered: 2019-07-16
Posts: 22

[SOLVED] Question about unbricking PM3 RDV2 with buspirate

I'm following this guide: https://github.com/Proxmark/proxmark3/wiki/Debricking-Proxmark3-with-buspirate as well as this one: https://scund00r.com/all/rfid/2018/05/18/debrick-proxmark.html to de-brick my PM3 RDV2. However, whenever I try to run OpenOCD, I get the following output:
Info : Buspirate JTAG Interface ready!
Info : This adapter doesn't support configurable speed
Error: JTAG scan chain interrogation failed: all zeroes
Error: Check JTAG interface, timings, target power, etc.
Error: Trying to use configured scan chain anyway...
Error: sam7x.cpu: IR capture error; saw 0x00 not 0x01
Warn : Bypassing JTAG setup events due to errors
Info : Embedded ICE version 0
Error: unknown EmbeddedICE version (comms ctrl: 0x00000000)
Info : sam7x.cpu: hardware has 2 breakpoint/watchpoint units


I inserted a 6-pin header into the proxmark, and connected the SparkFun cable to each pin. I didn't solder the pin header to the Proxmark3, I only inserted the header pins through the holes, then connected the sparkfun cable onto the pins protruding now..

EDIT: I tried this as well with disconnecting the 3v3 white wire and powering the proxmark over USB, still nothing.

No matter if I follow the pin instructions from the official guide or scund00r's guide, I get a similar message. The only difference is, when I use scund00r's pin layout for the RDv2 I get "Error: JTAG scan chain interrogation failed: all ones" instead of all zeroes.

Can anyone provide some pointers/recommendations as to what I should do to try and talk to the proxmark?

Last edited by batman192 (2019-08-12 22:15:41)

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#2 2019-07-21 12:02:02

fazer
Contributor
Registered: 2019-03-02
Posts: 42

Re: [SOLVED] Question about unbricking PM3 RDV2 with buspirate

Hello Batman192, what and version of the pirate bus because with the 4 not possible.Good Sunday
3 may be .

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#3 2019-07-21 16:16:56

batman192
Contributor
Registered: 2019-07-16
Posts: 22

Re: [SOLVED] Question about unbricking PM3 RDV2 with buspirate

fazer wrote:

Hello Batman192, what and version of the pirate bus because with the 4 not possible.Good Sunday
3 may be .

i should have clarified- I followed scund00r's tutorial when buying a Bus Pirate as well, I have a version 3b Bus Pirate with 6.0 firmware flashed onto it that contains OpenOCD support.

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#4 2019-07-21 19:03:33

fazer
Contributor
Registered: 2019-03-02
Posts: 42

Re: [SOLVED] Question about unbricking PM3 RDV2 with buspirate

Good evening batman192, normally the pirate bus V3 & ok for the procedure jtag, good-evening.

Re, in / proxmark3 / tools / jtag_openocd have you check the two necessary files, interface bus pirate check settings & in chip-at91sam7s.cfg. Good luck for my part I had to also do a jtag I ordered at lab401 equipment, have a pirate bus V4 but it does not & also Ulink2 ditto not the job.

Last edited by fazer (2019-07-21 19:25:22)

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#5 2019-07-24 22:06:07

batman192
Contributor
Registered: 2019-07-16
Posts: 22

Re: [SOLVED] Question about unbricking PM3 RDV2 with buspirate

THIS HAS BEEN FIXED!

The pinout diagrams available online were not valid for my RDv2. I worked with someone to identify the proper pinout diagram. The default configuration was a-okay.

KEY NOTES:
-The pin header does NOT have to be soldered onto the Proxmark, BUT it's recommended since the fullimage flash takes a while and you'll need stable contact with the pin header and Proxmark.
-I recommend a curved pin header, easier to understand what cable goes where


I'll be putting together a guide and videos hopefully for how to do this yourself and how to identify pins yourself as well, going from zero to unbricked Proxmark.

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#6 2019-07-25 08:12:18

Mackwa
Contributor
Registered: 2016-06-10
Posts: 51

Re: [SOLVED] Question about unbricking PM3 RDV2 with buspirate

great that you managed to unbrick your RDV2.
I also unbricked an old proxmark3 (green PCB) with bus pirate some years ago smile

//edit: a (video) tutorial would be great, I'm interested smile

Last edited by Mackwa (2019-07-25 08:12:54)

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#7 2019-08-12 22:07:25

batman192
Contributor
Registered: 2019-07-16
Posts: 22

Re: [SOLVED] Question about unbricking PM3 RDV2 with buspirate

@Mackwa It's not quite a video tutorial BUT I did put together a step-by-step guide on how to un-brick an RDV2 here: https://b4cktr4ck2.github.io/De-Brickify-Pm3-RDV2/

I'll also reply to the sticky with my guide.

Last edited by batman192 (2019-08-12 22:14:59)

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