To calculate SPKC in zte phones as x760, etc

[[Shadab_M]]

Hi All!

Here is my ZTE NCK and SPCK Calculator in PHP.

I am not going to publish code FREE anywhere. Bcoz I dont want to kill market.

So, to let people check out if it work fine, I have uploaded on my website.

Just type in browser http://www.hardnsoft.biz/zte/zte.php?imei=xxxxxxxxxxxx where xxxxxx is last 12 digit of IMEI.

ZTE NCK/SPCK Calculator by shadab_a4u
IMEI: 873022388655
---------------------
NCK : 277338726619
SPCK:723111946987

Thanks to eccapitel and y3kt.

Br,
Shadab Ahmad

[slawekw]

Many,many thanks to elcapitel, y3kt and all ,who participated in this thread.
It was for me a perfect puzzle for 3 days, everything else went to the side. Thanks to you I decided to learn programming and write a calculator myself hahahaha. 30 years ago, I learned to program in Basic(with ZX Spectrum ), but today, despite the desire to succeed I do not write anything meaningful. I got stuck on the imei string breaking on the number.(but all rest,looking good) Thanks again friends,for a great thread, which spent a happy days of my life.
Best regards.
slawekw
Sorry for my english.

[elcapitel]

Correct my friend, only a detail, is "elcapitel" not "eccapitel"


br
elcapitel

Originally Posted by shadab_a4u

Hi All!

Here is my ZTE NCK and SPCK Calculator in PHP.

I am not going to publish code FREE anywhere. Bcoz I dont want to kill market.

So, to let people check out if it work fine, I have uploaded on my website.

Just type in browser http://www.hardnsoft.biz/zte/zte.php?imei=xxxxxxxxxxxx where xxxxxx is last 12 digit of IMEI.

ZTE NCK/SPCK Calculator by shadab_a4u
IMEI: 873022388655
---------------------
NCK : 277338726619
SPCK:723111946987

Thanks to eccapitel and y3kt.

Br,
Shadab Ahmad

[sergeymkl]

Originally Posted by shadab_a4u

Hi All!

Here is my ZTE NCK and SPCK Calculator in PHP.

I am not going to publish code FREE anywhere. Bcoz I dont want to kill market.

...

Well done

Can i take a look at your code, maybe you implemented different way?
(i already have myself done)

[sergeymkl]

Originally Posted by slawekw

Many,many thanks to elcapitel, y3kt and all ,who participated in this thread.
It was for me a perfect puzzle for 3 days, everything else went to the side. Thanks to you I decided to learn programming and write a calculator myself hahahaha. 30 years ago, I learned to program in Basic(with ZX Spectrum ), but today, despite the desire to succeed I do not write anything meaningful. I got stuck on the imei string breaking on the number.(but all rest,looking good) Thanks again friends,for a great thread, which spent a happy days of my life.
Best regards.
slawekw
Sorry for my english.

Don't give up! Try it again and ask for help in Speccy forums.

Just imagine how you will impress your fellow friends and unlockers:
"Look, I unlock 2009 phones with a 1982 computer!"

[dr_aybyd]

I got stuck here. I am very confused like you said

and now based on the chart we have two make another line based on the digits in the chart which corresponds to the digits on the imei, and inverse the order. it sounds a little confusing but i know you will understand. so for our imei
000002 243814
we have:
284426 600000

[VM_Hacker]

@dr_aybyd

Read again the post of y3kt

B.R,
VM_Hacker

[mneon]

Originally Posted by y3kt

how to calculate nck for zte phones such as x760.
This is based on the whole theory by elcapitel, i have only realized of one little step but most of the work was done by elcapitel, we must thank him for this wonderful research.
Let's begin explaining how it is done, but if you have read this whole thread you should know most of what i am going to explain here.
let's take the following imei (only important 12 digits are used)

000002 243814

our first step will be to sum all digits: 0+0+0+0+0+2+2+4+3+8+1+4=24
then we will calculate a line which is the result of our sum 24 by each digit of imei.

0x24=0
0x24=0
0x24=0
0x24=0
0x24=0
2x24=48
2x24=48
4x24=96
3x24=72
8x24=192
1x24=24
4x24=48

this way we have:
000008 862246

now the second step is based on this chart:

1 ............... 8
2 ............... 6
3 ............... 4
4 ............... 2
5 ............... 0
6 ............... 8
7 ............... 6
8 ............... 4
9 ............... 2
0 ............... 0

but with a little trick, we have to tak our imei and split it in two halves like this:
000002 243814
and now based on the chart we have two make another line based on the digits in the chart which corresponds to the digits on the imei, and inverse the order. it sounds a little confusing but i know you will understand. so for our imei
000002 243814
we have:
284426 600000
pay attention to halves colors so you can understand it better. you can see, for instance, that for the number 2 you get number 6 and so on.

now third step is to use the following line:
688950 000000
which is the magic line you get when you calculate the nck with all 0 in imei.

if we put all three lines in order we get:
000008 862246
284426 600000
688950 000000
we can easily sum digit by digit, and in this case we get this:
862374 462246
which for our surprise will be the nck for the given imei.

so for imei 000002 243814 we get nck 862374 462246 i have tried we a couple of examples and the result is the same, don't have delphi here with me now but sure someone can code this algo and make more tests to see if everything is correct.

this is another test i did:
000012 243814 --> imei sum: 1+2+2+4+3+8+1+4=25
000050 005050 --> firs line
284426 680000 --> second line
688950 000000 --> third line
862326 685050 --> nck

once again thanks for all interested and specially to elcapitel for his hours dedicated to understand this.

luck;

no need conversion table ,, just multiply by 8 it give same result

[Momo_Gsm]

nice notice mate and thanks for sharing.
anyway as we have polar box no need to break head i see its for education only thanks.

[elcapitel]

Yeah is for "Educational purpose"

br
elcapitel

Originally Posted by *****ri

nice notice mate and thanks for sharing.
anyway as we have polar box no need to break head i see its for education only thanks.

[[Shadab_M]]

Originally Posted by elcapitel

Correct my friend, only a detail, is "elcapitel" not "eccapitel"


br
elcapitel

Haha!

Corrected!

Was in hurry, so just a typing mistake!

Thanks again!

Br,
Shadab Ahmad

[elcapitel]

jajaja ok np

br
elcapitel

Originally Posted by shadab_a4u

Haha!

Corrected!

Was in hurry, so just a typing mistake!

Thanks again!

Br,
Shadab Ahmad

[sergeymkl]

Originally Posted by mneon

no need conversion table ,, just multiply by 8 it give same result

good you see that! i didn't see it. thanks for your contribution.
just as note: in MCU probably table is more efficient for code size.

[sergeymkl]

Originally Posted by dr_aybyd

I got stuck here. I am very confused like you said

Hi, read my post then you will understand.

You just read the IMEI from right to left, multiplying by 8 and only using least significant digit or doing a table lookup and write the results from left to right.

By taking only the least significant digit means:
2 * 8 = 16

[elcapitel]

yeah! multiply by 8 and only take the last digit of the result. good idea

br
elcapitel

Originally Posted by mneon

no need conversion table ,, just multiply by 8 it give same result