重新格式化MIFARE DESFire（MF3ICD40）NFC标签
[英]Reformat MIFARE DESFire (MF3ICD40) NFC tags
问题描述
I have a few MIFARE DESFire (MF3ICD40) NFC cards that were once bus/train passes. 
我有一些曾经通过公交/火车通行的MIFARE DESFire（MF3ICD40）NFC卡。 I am trying to reformat the card. 我正在尝试重新格式化卡。 I do not care if I loose the information already on the card, or if I am only able to add more information to the card, if there is any free space. 我不在乎是否丢失卡上已有的信息，或者如果有可用空间，是否只能向卡中添加更多信息。 I am aware that there are apps that store commands within the app/cloud and just reads the NFC serial number, but I am looking to write these cards to be used by people other than just myself. 我知道有些应用程序将命令存储在应用程序/云中，并且仅读取NFC序列号，但是我希望编写这些卡以供非我本人使用。
Click here for the NFC TagInfo by NXP's information on one of the cards. 单击此处以其中一张卡上的NXP信息获取NFC TagInfo。
1 个解决方案
解决方案1
0 2013-11-19 10:24:28
You need to have the key of the master application in order to erase the memory or add further applications. 您需要具有主应用程序的密钥才能擦除内存或添加其他应用程序。 Similarly, if you want to add files to the existing application (AppID 0x000001) you would need a key for that application. 同样，如果要将文件添加到现有应用程序（AppID 0x000001），则需要该应用程序的密钥。
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