Modify CWI & BWI on A22CR?

[jeroen]

Hi all,

I working on a simple EMV test/example card. I'm using a modified openEMV implementation.

I've instaled everything on a A22CR card using global platform pro with default settings.

When I use the pyAPDU tool to send individual commands to the card everything works perfectly as expected. But when I use an EMV compliant test terminal it fails to even get to the application selection step.

The issue appears to be that the ATR does not respond in a way as expected by EMV book 1. It seems TB3=9F, and the maximum value is 45. Is there a way to change the CWI and BWI of the A22CR? And if yes, how do I do this?

Thanks!

[JavaCardOS]

Just to confirm, would you please tell us where you bought the A22CR card?
If from our store, please provide paypal Unique Transaction ID!

Meanwhile, we will contact our card provider FEITIAN to confirm if we can provide the related way to change card ATR.
If we have any further news, we will let you know at once!