Mifare PLUS SL1 to SL3 using ACR1222L

[djordjerackov]

Hi All,

I'm stuck with this.

We're using ACR1222L.

We have NDA with Mifare, and I read the docs bunch of times, but I can't figure out how to go into ISO 14443-4 MODE and send commands for authent when the SAK bit 6 is 0 for SL1?

When I try to send command, in current state I always get 6300 as response from ACR which basically means FAILED and says nothing useful.

Who can I contact for help? Or can someone contact me? Thank you

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