Unable to emulate mifare classic 1k

[mindbreaker2]

I tried to emulate a mifare classic 1k and it did not work. I've checked the dumps and they are identical.

The chameleon ultra is up to date and sending the correct data so I don't get it.

[xianglin1998]

Update your device firmware.

[mindbreaker2]

I've updated it but still no luck. The flipper zero does not work either so I think my reader is doing something to be sure it's a real tag.

As soon as the cu communicates with the reader, a red solid led turns on on the reader.

[Nikotine1]

I'm having the same issue. The CU has been able to emulate anything I wanted it to until now (both HF and LF). I installed an NFC lock for my mailbox and it works with the HF tags it came with. I took a dump of the tag and confirmed the dumps are exactly the same with NFC tool diff function. Yet, the CU doesn't work on the lock. I can't image such a simple lock has checks for cloned tags, but if it has, which options should I enable (Gen1A magic mode, Gen2 magic mode, Use UID/SAK/ATQA from 0 block or any write mode)?

[mindbreaker2]

Nothing's wrong with the emulation, the issue is that some readers use non standard protocol.
I've tried every mode of the cu nothing seems to be working with my reader.

I tried sniffing the traffic to understand the difference between real and emulated tag but I don't have enough knowledge to figure it out.

[Nikotine1]

Hmm strange. FYI, it's a Sporgo NFC lock (Amazon).
Yet another reason to get me a Proxmark3 :)