Hi,I am using MIFARE CLASSIC EV1 for my vending machines but I can't write to sector 3 because it is read only. I have already made sure that the keys are correct.
how can I write to it? Thanks.
unfortunately if you set the sector trailer to this, there is no way to modify it, since you set the Key A or B can only be used to read, please be careful with this and this is very strange because when a key is being used when you read the trailer it should return 0s.
and I see the card is answering with the key values, can you share more information of where you got the cards and things like that ? please send me a direct message.
Have a great day !
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