Originally Posted by wassupadi
I took a sony xperia nfc tag from my friend to use it but by mistake I enabled write protection white writing a text on it. And now the nfc tag is of no use. Please help me to make change the code in the nfc tag so I can use it again for another tasks.
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Hmm, bad luck, but I´m not aware of any possibility to change the data on a write protected tag.
Depending on the content you have written to the tag, you could use NFC ReTag to start activities. But this depends, in your special case, highly on the written data. Some text message, should be no problem, but if you have written some Android Application Record to open a specific app, android background dispatching will always route you to the specified app (or google play if it´s not installed).