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How to use the NDEF methods with the NT4H (e.g. erase_all_ndef_records) on µFR Nano reader if you get an NDEF_UNSUPPORTED_CARD_TYPE status ?

If you have difficulties with dedicated card emulation and erase_all_ndef_records function, the possible cause may lay in your device firmware version. 

Linear Read/Write is used for reading and storing NDEF data into the tag. If you have difficulties with dedicated card emulation and erase_all_ndef_records function, the possible cause may lay in your device firmware version. 
In firmware version 5.0.44, the NFC tag emulation is replaced with the MCU for Tag Tamper and ECC signature functions. To enable the card emulation function, flash your device with some earlier firmware versions, such as FW 5.0.42 or FW 5.0.45.

We are still working on a new firmware development with TT, ECC and emulation included. Unfortunately, to make more room for new features, some other functions have to be removed, such as internal DES, 3DES encryption, or similar.