Hi , I ordered a simtrace and found the problem written in know issue, the host can't split ATR and APDU but only report detect ATR. Could you please tell me where I can find the firmware and how to update it? Best Regards Ma Yue <para>For some cards the firmware does not send an USB message at57 <http://code.metager.de/source/xref/osmocom/simtrace/docs/chapters/using_sniff.xml#57> the end of the ATR. The ATR and first APDU will be send in one message58 <http://code.metager.de/source/xref/osmocom/simtrace/docs/chapters/using_sniff.xml#58> and the host utility fails to split APDUs and nothing will be traced.59 <http://code.metager.de/source/xref/osmocom/simtrace/docs/chapters/using_sniff.xml#59> A band-aid for the firmware exists and can be found on the mailinglist.60 <http://code.metager.de/source/xref/osmocom/simtrace/docs/chapters/using_sniff.xml#60> </para>