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  • Re: Reply To: How to write and read data blocks

    12. February 2018 at 23:20     in reply to: How to write and read data blocks

    yocki yocki
    The error messages are only that. There are no additional clues what cause the error.
    I am using mifare 1K and ACR Reader by ACS. i also have supplied the authentication required (using KeyA). I am able to write to another block (Sector 2 Block 1) and succesfully read what i have been written.
    But, when i write to Sector 3 Block 3, it fails. Moreover, the Sector cant be accessed again. I tried with 10 cards and all give the same result.
    Whats wrong with Sector 3 ?
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    Re: Reply To: How to write and read data blocks

    12. February 2018 at 10:29     in reply to: How to write and read data blocks

    yocki yocki
    Hi,

    I am trying to develop an app that store value into the card. I am using VB6 Sample Code supplied by the ACS reader.

    I write a value (number) into Sector 3 Block 3. The write is not succesfull , there is error
    "Unknown Reader Error : 3040"
    . After that, i can not login into the Sector 3 anymore. There is error
    "Operation Failed : -3030"
    .

    Why this is happening ?
    Which Sector is safe / recommended to write, which is not ?
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