I am using NXP QN9080SIP-DK board and I was able to flash this example for NFC tag update from this link https://www.nxp.com/docs/en/application-note-software/AN12319SW.zip and it was working fine and even I was able to update the NFC tag. Then I integrated NFC related code to a qn9080 heart rate sensor example and i2c write was failing to write on to the NFC tag. so I re-flash the working NFC example on the board, even in that case now I was not able to update the NFC tag.
it seems like i2c write is returning an error. how to factory reset the complete board.