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J3D081 default applet deleted

Posted: Sat Dec 02, 2017 5:15 pm
by cdosrun
Hello,

I should be really grateful for some pointers. I bought a J3D081 as a first javacard and tried a number of applets. However, I think I managed to delete the default applet off the card (the only thing showing in response to gp -l is the ISD). The ATR of the card is now 3B80800101

Is this recoverable? I cannot find where to obtain the default applet from or how to change the ATR.


Thank you,

Andrew

Re: J3D081 default applet deleted

Posted: Thu Dec 07, 2017 11:01 pm
by jennyvenus
You can use snooper.exe to see the packages and instances inside the card

http://www.microissuer.com/download_en.html

Re: J3D081 default applet deleted

Posted: Thu Dec 07, 2017 11:08 pm
by jennyvenus

Select a card reader in the list


Click the Java Card Manager icon on the left toolbar


Fill in the corresponding key, such as 40-4f, then read the card status, or something else