I am having an strange issue that I can`t solve.
I have an NFC tag NT3H2111, which I could originaly write and modify totally throught the NFC mobile application, but I have modified the user registers via I2C with a microcontroller and now I can't modify those registers with the NFC.
I can write with NFC to the others registers but the group of registers modified with the microcontroler now can just be modified with the microcontroller.
How could I solve it so I can modify them again with the NFC mobile application?
Thanks in adavance.