Thread: IMEI changing problem

any can explain this clue about imei changing:

3.24 updateflashimei(ufi)
-------------------------

From A50/C55 on there's another IMEI in the OTP protection registers
of the flash chip. Theis register is locked to prevent further updates.
Apart from this, you might want to set this IMEI as well when - for
example - replacing the flash chip.
Please note that because of the OTP behaviour of the protection
register, it means that you can only write (theoretically) once the
contetn of the register. To be exact it means that you might write the
register as many times as many times you wish (if it's not locked),
but you can only make 1 to 0 transitions in the IMEI mask.
So it might turn out that you end-up with a different IMEI (different
from the one you requested to set).
This command is only a flag indicating that the flash IMEI shall be
updated after a successful unlocking. Please note that you might
"reunlock" with the "adjusted" flash IMEI (because of 1 to 0 transitions
only).


how can apply this concept?

and the otp check is in fw or in the boot of the phone??

@Andrew911
Right - OTP IMEI is only for service checking. Phone registered to network with copied to RAM EEPROM stored IMEI.
BTW - have you progress with M55 patch? If yes - let me know!
WBR - DebeliaMark, BG. Mailto:[email protected]

please enter to this web page, i don't understand it but maybe could help us with our problem
http://motp.dyndns.org/

To be sure, You may try it
On my C55 v.24 phone it work - *#06# -> I see new "IMEI" (ANY string from address 0x0B6590 instead of IMEI from EEPROM or OTP)

On C55 You must disable CRC check before applying any patches to fullflash:

;C55v24 - disable first CRC check
;(c) avkiev
109BAE: DA90B894 CC00CC00
;C55v24 - disable second CRC check
145BEC: 2D 0D

or after patching fullflash Your phone will be locked - not turning on.
If so - restore original EEPROM or unlock phone, but without "disabled CRC check" phone will be locked again. For patching Use V-Klay. Nothing more to add.

So regarding point 6...

It is the solution for making phones work!, why changing IC to repair ORIGINAL IMEI??

@myjames.

Wich soft are you using.

I appreciate your info.....


Best Regards.

A55...

OK fellow GSM researchers... here is the deal : the most common thing to happen when you try to disable the lock in the otp area is that ur set die... i had this problem a cluple times ad have sien it al around.... but is there any way to disabe the lok using a diferent set's firmware and epprom??? when freia is asking you to use a new imei it shoud be because u can chage it is any one there that actually know how to to this operation using freia??????


best regards

Jay

Anyone knows if there is any patch for SL55? or where can I find more info?

Thx in advance & B/R

I have a C56 (American 850/1900) i can apply this patches?

any know about this patches??