Pretty simple really, first you just need to make sure that TAP + SEND is enabled. Once you’ve done that.
Just install NFC Tag Writer and open the app, just select what you want to write to the tag. Just enter the information you want, hold the tag to the phone (ignore any questions about adding things from the tag). The “write TAG” lights up and you just tap it and it’s done.
What is MTP then? it’s simply what’s been used in One S, One X and One X+ that’s running 4.1.1 (jelly bean). Stands for Media Transfer Protocol and is developed by Microsoft, and as you would guess it works very well on more recent versions of Windows. But, you need an additional download on Windows XP to get it to work. Forget it on xp. And on mac? Sure, you can get it to work if you download the file needed for it.