Proxmark3, paradox C704

So i have tried multiple different methods off and on this website and I’m at a loss. I’m trying to not only copy the full raw info but the FC number, and others. everything. to the exact same type of fob c704, any input would be appreciated. Thank you in advanced.

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What kind of chip are you trying to write to?

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The Paradox c704, same type. i just realized maybe its not writable but im not 100% sure, cant find alot of info on it.

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I don’t think you can write to a C704 fob would you mind posting the output of

lf search
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yep one sec

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Paradox - ID: 000214c66 FC: 33 Card: 19558, Checksum: cc, Raw: 0f55555595665a56969a5a5a

[+] Valid Paradox ID found!

[+] Chipset detection: T55xx

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You appear to have a T55XX chip on your hands is this the fob you want to clone or the fob you want to clone to?

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that would be the one im trying to copy too, they are the exact same physically. other then the data on them. ive went through t55xx commands aswell, if there is a way to edit ID, FC, Card, i feel that would be a major step ahead for me.
although ive read somwhere that the id fc and card are specific too the raw. thank you for the help my dude.

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You could try:

lf paradox clone --fc <FC> --cn <CN>

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Gotcha, I think I understand where you’re going wrong, the Proxmark3 Client has the cloning commands included underneath the type of chip, so you would want to try lf paradox clone --fc xxxx--cn xxxx you could also do lf paradox clone -r whateverrawdatayouhave. No problem, everyone has to learn.

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tried it brotha, i end up with

[usb] pm3 → lf paradox clone --cn 19668
[=] Preparing to clone Paradox to T55x7 with raw hex
[+] Blk | Data
[+] ----±-----------
[+] 00 | 00107060
[+] 01 | 0F555555
[+] 02 | 55565A5A
[+] 03 | 665AA55A
[+] Done!
[?] Hint: try lf paradox read to verify
[usb] pm3 → lf paradox read
[=] Paradox - ID: 000214c66 FC: 33 Card: 19558, Checksum: cc, Raw: 0f55555595665a56969a5a5a

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faulty proxmark? how would i go about showing you my device specifics? i haven’t tried any other types of cards

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You need to specify a facility code with the --fc flag.

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[usb] pm3 → lf paradox clone --fc 44
[=] Preparing to clone Paradox to T55x7 with raw hex
[+] Blk | Data
[+] ----±-----------
[+] 00 | 00107060
[+] 01 | 0F555555
[+] 02 | 9A555555
[+] 03 | 55596A5A
[+] Done!
[?] Hint: try lf paradox read to verify
[usb] pm3 → lf paradox read
[=] Paradox - ID: 000214c66 FC: 33 Card: 19558, Checksum: cc, Raw: 0f55555595665a56969a5a5a

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see why im stuck lol, seems like it just doesnt want to write. could be it isnt writable but i havent found anything on the net stating otherwise. bit of a pickle

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You need to do it all in the same command lf paradox clone --fc 44 --cn 19668

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You have a T55xx chip on your hands, it’s entire purpose in life is getting written to, that’s why I have one in my hand.

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[usb] pm3 → lf paradox clone --fc 44 --cn 19668
[=] Preparing to clone Paradox to T55x7 with raw hex
[+] Blk | Data
[+] ----±-----------
[+] 00 | 00107060
[+] 01 | 0F555555
[+] 02 | 9A565A5A
[+] 03 | 665599AA
[+] Done!
[?] Hint: try lf paradox read to verify
[usb] pm3 → lf paradox read
[=] Paradox - ID: 000214c66 FC: 33 Card: 19558, Checksum: cc, Raw: 0f55555595665a56969a5a5a

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Odd, did you buy this chip as a T55xx chip or as a Paradox chip? I just sanity checked myself and wrote it to my NExT and it worked right.

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i apologize if this is frustrating you, i am new to this. i hit my cap for a new account for replys.
i bought it as a paradox chip from the manufacturer

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it must take a lil bit to load for that upgrade, thank you though Pilgrimsmaster.

ill double check my antenna info and report back to you

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[!] Contradicting measures seem to indicate you’re running a PM3_RDV4 firmware on a generic device

i double checked with hw tune

this anything of concern?

lf t5 detect came up

could not detect modulation automatically.

and jpfeif29 ill double check with the password stuff, thank you very much for your guys help. and thank you for a bit of history on it.

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uhh win 10…

Iceman/master/v4.19552-399-g66b1a4853-suspect

compiled with…MinGW-w64 13.2.0

FW: rdv4

i dont believe this is a rdv4 device my dudes.

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yep i installed with proxspace

command prompt, i really couldn’t tell you more i sorta winged it with a youtube video and a guide from a website. once i saw i got this far i was ecstatic…

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running those commands as i type this

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Got it updated, thank you brother.
going to fiddle with password stuff,
you guys know how i would check full hex info?

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lf t55xx detect
still hits me with
could not detect modulation automatically. could try lf t55xx config?

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lf t5 config

=] — current t55xx config --------------------------
[=] Chip type… T55x7
[=] Modulation… ASK
[=] Bit rate… 0 - RF/8
[=] Inverted… No
[=] Offset… 0
[=] Seq. terminator… No
[=] Block0… 00000000 (n/a)
[=] Downlink mode… default/fixed bit length
[=] Password set… No

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