How to restHow to restore the initial password of the M1 card?ore the initial password of the M1 card?

When you receive the newly issued M1 card from the card factory, all sector passwords are the default initial password of 12 F. If you have any operations to rewrite the password on the card at this time, be sure to remember the password. If you do not remember, you will not be able to recover the initial password of the M1 card.

The recovery method can be achieved by downloading the SDK development document for the corresponding model of our reader/writer, opening the DEMO testing software, communicating with the reader/writer, selecting the password to load, and then reading all M1 card sectors. When the interface reads all sectors from 0 to 15, it indicates that the card password has not been changed to the default initial password of 12 F. When the interface shows that a certain sector cannot be read, it indicates that the password for that sector has been changed, So it is necessary to write the changed password in the corresponding sector in order to enter the read mode. After entering, you can also change the password to the default initial password of 12 F in the corresponding sector, which means the initial password has been restored.