2100 change imei

[b18c]

after i flash my 2100 i cant change the imei,how to change it?i use rolis to change but it said imei write failed

[danwood76]

You need to flash a virgin eeprom to ure fone you will be able to find it on the forum just search 2100 virgin eeprom, I posted one a while ago!
You need to flash it seperate to the mcu+ppm!

Unfortunatley you will loose any ringtones, pics, and personal settings!

[b18c]

sorry im little bit dumb,can u explain more throughly how to flash it?

i have downloaded the virgin eeprom and flash it to the phone but i still cant change the imei

[danwood76]

First of all you need the software and cable which I assume you already have,
the best software to use is rollis flasher.
You need to flash the virgin eeprom to the correct address on the flash file, I am unsure of the correct address but you will be able to find out if you search for the 8210 conversion to 2100 thread as I posted the address and the file on there.

Just flash it to the address and it should work, you may also need to flash a software upgrade aswell!

Flashing is covered in the newbies FAQ so search there if you need more help!

[b18c]

any idea?i have did all things but still change the imei

pls help

[2100]

the problem is the eeprom of the 2100, somehow differennt from the previous eeprom. these 2100 imei in the eeprom is only been able to change once and that it!!! you can't change them the second time. This eeprom data somehow making the phone recognise it only once (One Time Programming).

As they mentione in the forum, u can change the imei again if you try to change the flash chip of the 8210 or 8250, but for me, althought the flash chip is changed, it only allows us to change one time also and that it!!!

IT ONLY ALLOWS US TO CHANGE ONCE!!!!!!
THIS IS THE PROB!!!

ALREADY TESTED ON THE 8250 phone, (i didn't change the chip but try to change the imei, since they said 8210 or 8250 flash chip can let us change the imei.


Unless they hack this eeprom!!! (SOME HOW ENCRYPTED)

[PhoneGeek]

dct3 phones can have the imei changed by the click of a button, unfortunately dct4 phones use a once programable chip, which needs to be changed and then written with the appropiate software, this takes a very skilled solderer

[andre128]

use nokia tool 1.8. i've try many time... 100% working

[Ming]

Same. I tested most of the software. Noktool 1.8, 1.9 and even others I forgotten the names. It won't work. It can only REPAIR Imei and not CHANGE Imei. Cos when you read your phone with the tools, it will give 2 diff Imei. 1)Imei and 2)Original Imei. I cant change the original Imei. It only changeable to the same as the IMEI. Hope sum1 gets a solution for this soon.

[diego]

try nok tool by jordik or this one

[CooCkieXP]

Have tried changing IMEI, so far successfull...

But notice 1 unit...tried with all IMEI changing Programs but still no luck...

Check Flash IC, if flash IC is a Sharp made... This are the chips that's hard to change IMEI...

Tested by me...

Hope somebody can release a Program that can do the Job...

Good Luck!

[b18c]

Originally posted by diego
try nok tool by jordik or this one

m8,tried but still cant

thanks

[qasdfdsaq]

Guys,

The new phones no longer use EEPROMS for the IMEI area, just PROMS. Therefore, they are just ROMS once you get them, theres no way to reprogram, nomatter what sofware you use or how. The chip is physically unable to be modified after manufacture.

So no matter how long you wait, its not gonna happen.

[danwood76]

@qasdfdsaq

The nokia 2100 is a dct3 phone and so has a full eeprom and the IMEI is stored in it so it is possible to change it!
I have done it many times with no problems!
Obviously there are some eeprom versions out there that act strangly when it is changed through the data cable rather than being edited in a hex based editor!

@ anybody with problems changing the IMEI

Download a hex editor off the net that works in both hexadecimal and text, open up a full 2100 flash (inc eeprom) search for the IMEI number of that flash file in the text area it should find it at least twice!
Change this to the required IMEI and reflash on to your phone!

hope that helps!

[mumilho]

use nokia tool 1.8. i've try many time... 100% working

This file is infected with virus !!! Please remove !!

[Ming]

@qasdfdsaq

The nokia 2100 is a dct3 phone and so has a full eeprom and the IMEI is stored in it so it is possible to change it!
I have done it many times with no problems!
Obviously there are some eeprom versions out there that act strangly when it is changed through the data cable rather than being edited in a hex based editor!

@ anybody with problems changing the IMEI

Download a hex editor off the net that works in both hexadecimal and text, open up a full 2100 flash (inc eeprom) search for the IMEI number of that flash file in the text area it should find it at least twice!
Change this to the required IMEI and reflash on to your phone!

hope that helps!

How do I find the imei? By just simply key in the 1st 14 digits and search with hex or text, I cant find it. Can you explain the procedure? I come across many ppl saying that 2100 imei cannot be change and some say its possible and gave the solutions but I tried them all still the same. The most is I am able to change it once thats all.

[danwood76]

If you do a full backup of your 2100 fls file, zip it and send it to me I will change the IMEI for you and send it back!
PM me if you want to do this!

You should be able to find the IMEI quite easily! try to search just a small part of the IMEI, just remember that it has to be the same IMEI that the file already has and not the IMEI you want the file to have!
also remember that the last digit of the IMEI is calculated and is actually a spare number so don't include that in your search!

[Vinny]

@ anybody with problems changing the IMEI

Download a hex editor off the net that works in both hexadecimal and text, open up a full 2100 flash (inc eeprom) search for the IMEI number of that flash file in the text area it should find it at least twice!
Change this to the required IMEI and reflash on to your phone!

hope that helps!

First of all when you search for the IMEI in the EEPROM area, you will only find 1 occurance of the text/plain imei. for example 35012601597385 in text search will only occur once. In order to get the Original IMEI (2nd imei) so that you can also change it you'll need to XOR each byte by 65.

example
Plain Text IMEI 350126015973852 (not a real imei i just use as an example)
35 XOR 65 = 50
01 XOR 65 = 64
26 XOR 65 = 43
01 XOR 65 = 64
59 XOR 65 = 3C
73 XOR 65 = 16
85 XOR 65 = E0

20 XOR 65 = 45 (being the last digit in the imei)

so 506443643C16E045 is the Original IMEI for 350126015973852

however changing the values in a hex editor for the imei and original imei will result in a sim not valid or (simcard not accepted) state, so you'll still need to use noktool1.8 to read the phone then after reading just click on change imei or use this (http://www.neb.gsmservis.com/GSM/Nokia/DCT3RPv3.0F.zip) then read the phone then click on repair. (actually there are eeprom checksums that need to be computed but the programs like noktool1.8 etc.. will do it for us)

Additional info:

2100 imei text/plain is found in 0000C032 to 0000C038 (14 digit imei) or 7 bytes (in a 65536 bytes size file)
2100 original imei (HEX) is found in 0000C182 to 0000C189 (in a 65536 bytes size file)



Hope this helps.

[Ming]

erm.... can anyone explain abit of XOR? I dun quite understand what it means. The only thing i can do is changing decimal to Hexadecimal and no more than that. So hope you guys can help me with it. thanks in advance! Cheers!

[StRanger]

Additional info:

2100 imei text/plain is found in 0000C032 to 0000C038 (14 digit imei) or 7 bytes (in a 65536 bytes size file)
2100 original imei (HEX) is found in 0000C182 to 0000C189 (in a 65536 bytes size file)

Hope this helps.

yes, at 0x0c182 is xor'ed original imei. but i have a bunch of eeproms from working phones and oops - there's only 7 bytes of FF at 0x0c182 :(

and i can change original imei with any m2bus soft or patch eeprom - no problem. the problem is - where second imei stored?...

and one more - just erased whole flash and checked it - it was empty. then flashed full from another phone - yes, it's worked. but original imei is new and second imei is old. any flash with any imei doing the same - second imei always remains the same. where it stored, if i see EMPTY FLASH FILLED WITH FF??? in ram? in something like UEM at dct4? but this imei NOT MATCHED with sticker....

[Vinny]

example
Plain Text IMEI 350126015973851 (not a real imei i just use as an example)
35 XOR 65 = 50
01 XOR 65 = 64
26 XOR 65 = 43
01 XOR 65 = 64
59 XOR 65 = 3C
73 XOR 65 = 16
85 XOR 65 = E0

10 XOR 65 = 75 (being the last digit in the imei)

search your eeprom for the XORED value in order to get the 2nd IMEI, in this case the 2nd IMEI XORED is 506443643C16E075 so if i'll look thru the eeprom area of the example then search for the hex value 506443643C16E075. To change the example's imei from 350126015973851 to 350126013501266 all i have to do is xor the value again

35 XOR 65 = 50
01 XOR 65 = 64
26 XOR 65 = 43
01 XOR 65 = 64
35 XOR 65 = 50
01 XOR 65 = 64
26 XOR 65 = 43

60 XOR 65 = 05

btw the last digit can be generated by the attached program. Just click IMEI then choose check/repair

example:

Your IMEI: 350126013501262
Repaired IMEI: 350126013501266
and it will say that your imei is damaged ... then use the repaired imei. then just add 0 to the last digit for xor

[Ming]

I have figure out about "Xor" and now I m facing the problem same as StRanger. I can change the original Imei but the 1st Imei I cannot find where it is. Im using noktool1.8. Where is the 1st imei stored? Why the program can read and we cant find in hex? I guess the person who wrote noktool (Rolis) will know where it is located.

[StRanger]

this 1st imei stored at OTP memory, beyond 0x00400000. just read with geoflasher area from 3F0000 to 4F0000 and take a look with hex editor. you'll see 2 copyes of EEPROM and that XORed imei in first copy is different. yes, you can change it in flash, but can't write to mobile 'cause this area is OTP. i speak about 2100 with LRS13A1 combo FLASH+SDRAM.

and i think that MCU can be patched to point at usually used in DCT3 imei's place, because if i flash 8210 full at 2100, i can change BOTH imei.
but don't know how :(

but at servicemanual i see that LRS1341 can be installed. anybody have datasheet at this chip? i can't found it at net. has it combo OTP area?

BTW, if you fill EEPROM (not PMM) area with FF, phone will restore it from OTP :) just make 16 kbytes empty (filled with FF) file and write it at phone from 3FC000... so, we need not any "virgin" eeprom since it stored at otp...

[reo]

HI

Forgive me for my ignorance but is there a certain amount of 2100 that can b done directly via Mbus and voila imei changed i.e not the original but the second all important 1, and is there a certain amount that require some other method or has there been no further developements in this area i.e the sharp chips?

Or am i wrong completely and there is no way possible to chane imei on the 2100 ?

regards
reo

[phobos]

pls help me.
i had org. imei and sec. one
i started to "Check and Fix IMEI" from knok.
now i heva CS on my 2100 8(
what to do?
working soft from another phone gives CS!
eeprom reflash gives CS!

[danwood76]

Try to reset the IMEI etc. again but instead of having phone on just plug in the charger!
This will sometimes correct eeprom CS!

[phobos]

2 danwood76:
what is correct eeprom adress in 2100(i already tryed 3 add.)

[phobos]

big thanx!!!!
2 diego: for DCT3RPv3.0F.exe!
now i have fixed eeprom checksums via mbus.
2 danwood76: for advice!

now i'll try to change imei :smile:

[gulastugan]

I thought IMEI codes was hardcoded, like macadresses on a networkcard. Guess I was wrong. Is it possible to change IMEI on all phones?

[danwood76]

You can change the IMEI on dct3 nokias but dct4 have the IMEI stored on a chip called the UEM!

[doradora]

might be a dumb question, but what's the benefit of changing the phone's imei?
:-?

[HONGXING]

If a stolen phone is barred by IMEI (usually in UK), you can use it again.

[2100]

If a stolen phone is barred by IMEI (usually in UK), you can use it again.

Change the flash ic and then flash anew FUBU to it and change the desired imei u want which id unbarred, then the phone can be use

[danwood76]

No need to change the flash IC!
Only on dct4 fones is that needed!

[shaw]

try to change your combo ic, or we call it flash ic, then after you change you flash ic...try to flash it by using geoflasher,with your 2100 full flash....i have try it and it works.....


good luck....more power to you all....... :)

[boedi_w]

hi,
i just wondering is it work 100% for nokia 2100 with sharp IC without changing this flash IC?

what i have to do is to change the both IMEI

i have tried many way but nothing can flash the second IMEI???


anyone have idea???

please help me...

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