Okay. Not saying you're wrong. Just trying to understand because you can only write to 504 bytes on the ntag215 even if the data is 540 bytes in the bin file of the amiibo backup, because you cannot change the data that contains the manufacture data. My guess is that your writing the 540 bytes to the free 888 bytes on the ntag216 giving it an actual 1:1 copy plus the bytes your locking and the original manufacturer data.
I received this directly from NXP the creator of the NTAG's
Who provided you with the explanation? Did you mean 384 bytes? That is the difference in user memory from NTAG215 to NTAG216.
Creating a partition must be something related to your specific program. Both tag types are read and written with the same low level commands, the difference is the available user space and the page addresses for the dynamic lock bytes and configuration pages. See the details in Section 8.5 Memory organization in the datasheet:
http://cache.nxp.com/documents/data_sheet/NTAG213_215_216.pdf
So, you need to know more about the program itself or ask your colleague what he means by creating partitions. The specification for Type 2 tags is available directly from the NFC Forum page:
http://nfc-forum.org/product-category/specification/page/2/
Regards!
Basically there's no such thing as a partition and if you lock the last 384 bytes with FF's and then write with tagmo, it should work. I'll try it in a bit. The program I use to write to the cards is not user friendly whatsoever.
Edit:
FF3F7FBD on page 226 (the dynamic lock) of ntag216 would lock the pages 16-224 and then block 16-225
However:
The ntag215 has 01000FBD written to its page 132 (the dynamic lock) which means:
16-31 are locked (not everything)
16-129 are blocked (everything)
Perhaps what we need is 01007FBD written to 216
16-31 locked (not everything)
16-225 blocked (everything)
Edit again:
I found an anomaly
on the successfully written 215's there's a page 135 (that according to the datasheet, does not exist)
Where is this extra ghost page coming from?
Last edited by KingOfTaurus,