XYZprinting Open Source NFC key calculator online: www.nfckey.xyz (Page 7 of 8)

Not that it is very complicated it has to be with some friend who travels or I think that DHL Express works but in the same way I can not send money either

I bought it from a friend of a friend who brought it when he traveled to the United States a year and a half ago

Hi, I have used the key calculator and was able to read all pages on my NFC card but when I am trying now the key is not working for the second time reading do you know why it happens? printer model is davinchi mini w and after reding printer doesn't like the filament it says it is not original brand.

Hello, I executed the commands as MTWallet describes at 2017-05-02.
I Used the NFC tool by Nilezon to get the UID and KEY and PACK code.
UID 04 3B B3 2A B4 42 80 KEY 99 76 5C BF and PACK 5B 64

First of all i see only till page 2B, so page 2C is not visible.
The app says key is masked behind page =>0x2B 99 76 5C BF

These are the bytes of the pages
00 -043BB304
01 -2AB44280
02 -5C480580
03 -E1101200
04 -0103A00C
05 -340300FE
06 -00000000
07 -00000000
08 -5A504B00
09 -00354257
0A -400D0300
0B -400D0300
0C -D2002D00
0D -54484742
0E -30373633
0F -00000000
10 -00000000
11 -34000000
12 -00000000
13 -00000000
14 -400D0300
15 -EED83354
16 -3EF6E1CE
17 -B8254876
18 -00000000
19 -00000000
20 -00000000
21 -00000000
22 -00000000
23 -00000000
24 -00000000
25 -00000000
26 -00000000
27 -00000000
28 -000000BD
29 -07000008
2A -80050000
2B -00000000

I modified page 0A, 0B and 14 all to 400D0300 to "reset" the length to 200m.
I wrote the key in 2B (app is telling me it was succesfull) and i wrote the PACK in 2C with 2 times 00 so, i wrote 5B640000 in 2C. App is again telling me it was succesfull.
When i read again the NFFC chip, it is only listed to 2B and 2B is 00000000 and 2C is "hidden"

When installing the chip in the XYZ junior, it tells me in spool stats "Unidentified Spool"
What am i missing here?

Hope somebody can help me out.
Regards Denniske

I think from your previous message that you are using an original NFC tag, not one of the blank paper tags. To reset these, I don't think you need to write any lines other than 0A, 0B & 14.  You may also need to add 1 to line 09 each time you reset the chip. You definitely don't need to write the passwork and pack lines (2B & 2C). I will double check my notes when I get home tonight, I think I usually write the checksum values that a new spool would have also, but I'm not sure if those lines are necessary.

None of this will work however if you do not have firmware lower than 2.2.7 in your printer.

No It was the first time i had 100m left and read the NFC for the first time for changing the length. then i hade somthing to do and left it without writing or changing anything on NFC. i came back tried it again but this thime passwor was not correct.

Hello Newbii here

So ive gone through the thread and havent really found anyone with the sane issue I'm having, I have the UID and Key as well as the pack but when I try to authenticate with the NTAG it says unable please help

hi all, just wondering where the info i get from nfckey.xyz
is supposed to be entered, im new at this and all the reading im doing is doing my head in, all i want to do is use 3rd party filament.

cheers in advance,

i have the same problem

t

I know it is out there, but I can’t seem to find it. Is there a link to a site that explains what uid and all the other data is (for those like me who are clueless on NFC chips)? To be honest NFC, UID, and page are all Greek to me.

Is it a used tag?
Was it run down to 0m?

It has been known for the printer to lock the card when it is down to 0m.
I can't say for sure that this is what has been done - but if it is then it is irrecoverable.