world first: 2nd sim prob solved

[bamogil]

I just repaired my 2nd sim problem in cect T689. fisrt of all it was easy for this model because rxa/txa for first cpu and rxb/txb for 2nd cpu are all under the label ( look under battery cos the label is there). I did a normal complete format for the first cpu and then a normal complete format for 2nd cpu using rxb/txb. what I have noticed in the 2 gsm phone is this: they have 2 cpu but the 2 cpu does not start at the same time. when the first cpu finishes start up the 2nd cpu does its own. consequently when u want to format the 2nd cpu u will wait untill phone starts up and then software will detect the 2nd cpu and start the job( hope u get it).to be more clear when u want to format 2nd cpu u must connect cable wires to rxb/txb and gnd (gnd is alwasy same for the 2 cpu) and then when u press power on instead of software to detect phone ur phone will start up. at this point don't be discourage because this start up is for 1rst cpu. after phone is start up software will now detect 2nd cpu and start the format job.
after the 2 cpu are formated the phone imei will chenge. just power on phone and restore imei using rxa/txa for 1rst cpu imei and then restart phone and restore 2nd cpu imei (I use same imei like 1st cpu) using rxb/txb. now after this process ur phone is ok but when u check the imei u will see 2 imeis displayed but all 2 sims will work perfectly.
questions now: in my case I use the same imei for the 2 cpu but it works because I used 2 simcards from 2 differents operator but could not test 2 simcard from same operator because csutomer hapilly took back his phone quickly. I don't know if it will work in case I use 2 simcard from same operator??? but u can simply put different imei in the 2nd cpu to solve this).
now I think it is more clear. the new direction of our job now must be how to get the second cpu pinout for all other phone knowing that all our cables are only built for the first cpu access.
big thanks from Burkina Faso to infinity team

[tsarkh]

great info here my friend but i have one Q:
for TXb and RXb do they have connection to the phone's connector or u have to connect them on board??

[Kanwalgee]

Read this man he write this.

fisrt of all it was easy for this model because rxa/txa for first cpu and rxb/txb for 2nd cpu are all under the label ( look under battery cos the label is there).

[ndre]

Originally Posted by bamogil

I just repaired my 2nd sim problem in cect T689. fisrt of all it was easy for this model because rxa/txa for first cpu and rxb/txb for 2nd cpu are all under the label ( look under battery cos the label is there). I did a normal complete format for the first cpu and then a normal complete format for 2nd cpu using rxb/txb. what I have noticed in the 2 gsm phone is this: they have 2 cpu but the 2 cpu does not start at the same time. when the first cpu finishes start up the 2nd cpu does its own. consequently when u want to format the 2nd cpu u will wait untill phone starts up and then software will detect the 2nd cpu and start the job( hope u get it).to be more clear when u want to format 2nd cpu u must connect cable wires to rxb/txb and gnd (gnd is alwasy same for the 2 cpu) and then when u press power on instead of software to detect phone ur phone will start up. at this point don't be discourage because this start up is for 1rst cpu. after phone is start up software will now detect 2nd cpu and start the format job.
after the 2 cpu are formated the phone imei will chenge. just power on phone and restore imei using rxa/txa for 1rst cpu imei and then restart phone and restore 2nd cpu imei (I use same imei like 1st cpu) using rxb/txb. now after this process ur phone is ok but when u check the imei u will see 2 imeis displayed but all 2 sims will work perfectly.
questions now: in my case I use the same imei for the 2 cpu but it works because I used 2 simcards from 2 differents operator but could not test 2 simcard from same operator because csutomer hapilly took back his phone quickly. I don't know if it will work in case I use 2 simcard from same operator??? but u can simply put different imei in the 2nd cpu to solve this).
now I think it is more clear. the new direction of our job now must be how to get the second cpu pinout for all other phone knowing that all our cables are only built for the first cpu access.
big thanks from Burkina Faso to infinity team

First in the world??? ha ha read around then make foolish posts...

[snsoftkiller]

Originally Posted by bamogil

I just repaired my 2nd sim problem in cect T689. fisrt of all it was easy for this model because rxa/txa for first cpu and rxb/txb for 2nd cpu are all under the label ( look under battery cos the label is there). I did a normal complete format for the first cpu and then a normal complete format for 2nd cpu using rxb/txb. what I have noticed in the 2 gsm phone is this: they have 2 cpu but the 2 cpu does not start at the same time. when the first cpu finishes start up the 2nd cpu does its own. consequently when u want to format the 2nd cpu u will wait untill phone starts up and then software will detect the 2nd cpu and start the job( hope u get it).to be more clear when u want to format 2nd cpu u must connect cable wires to rxb/txb and gnd (gnd is alwasy same for the 2 cpu) and then when u press power on instead of software to detect phone ur phone will start up. at this point don't be discourage because this start up is for 1rst cpu. after phone is start up software will now detect 2nd cpu and start the format job.
after the 2 cpu are formated the phone imei will chenge. just power on phone and restore imei using rxa/txa for 1rst cpu imei and then restart phone and restore 2nd cpu imei (I use same imei like 1st cpu) using rxb/txb. now after this process ur phone is ok but when u check the imei u will see 2 imeis displayed but all 2 sims will work perfectly.
questions now: in my case I use the same imei for the 2 cpu but it works because I used 2 simcards from 2 differents operator but could not test 2 simcard from same operator because csutomer hapilly took back his phone quickly. I don't know if it will work in case I use 2 simcard from same operator??? but u can simply put different imei in the 2nd cpu to solve this).
now I think it is more clear. the new direction of our job now must be how to get the second cpu pinout for all other phone knowing that all our cables are only built for the first cpu access.
big thanks from Burkina Faso to infinity team

Give my salutation to people from Ouaga 2000 and avenue Kwame Krumah !!!
Thanks for the solution !!!!

@ndre
1st to post may be the step by step solution

[GAZZUZZ]

Originally Posted by bamogil

I just repaired my 2nd sim problem in cect T689. fisrt of all it was easy for this model because rxa/txa for first cpu and rxb/txb for 2nd cpu are all under the label ( look under battery cos the label is there). I did a normal complete format for the first cpu and then a normal complete format for 2nd cpu using rxb/txb. what I have noticed in the 2 gsm phone is this: they have 2 cpu but the 2 cpu does not start at the same time. when the first cpu finishes start up the 2nd cpu does its own. consequently when u want to format the 2nd cpu u will wait untill phone starts up and then software will detect the 2nd cpu and start the job( hope u get it).to be more clear when u want to format 2nd cpu u must connect cable wires to rxb/txb and gnd (gnd is alwasy same for the 2 cpu) and then when u press power on instead of software to detect phone ur phone will start up. at this point don't be discourage because this start up is for 1rst cpu. after phone is start up software will now detect 2nd cpu and start the format job.
after the 2 cpu are formated the phone imei will chenge. just power on phone and restore imei using rxa/txa for 1rst cpu imei and then restart phone and restore 2nd cpu imei (I use same imei like 1st cpu) using rxb/txb. now after this process ur phone is ok but when u check the imei u will see 2 imeis displayed but all 2 sims will work perfectly.
questions now: in my case I use the same imei for the 2 cpu but it works because I used 2 simcards from 2 differents operator but could not test 2 simcard from same operator because csutomer hapilly took back his phone quickly. I don't know if it will work in case I use 2 simcard from same operator??? but u can simply put different imei in the 2nd cpu to solve this).
now I think it is more clear. the new direction of our job now must be how to get the second cpu pinout for all other phone knowing that all our cables are only built for the first cpu access.
big thanks from Burkina Faso to infinity team

SO YOU THINK UR THE FIRST IN THE WORLD???????

[bamogil]

not me first in the world but infinity first in the world. sorry for bad title...

[bamogil]

Originally Posted by SNSOFTKILLER

Give my salutation to people from Ouaga 2000 and avenue Kwame Krumah !!!
Thanks for the solution !!!!

@ndre
1st to post may be the step by step solution

hello big man. Welcome. whenever u are passing by please call me.

[InfinityHelp]

hello bamogil!

thank you for sharing this step by step discription!!!
i am sure it will save other people many time, i am adding this tread to FAQ section.
regarding duble IMEI in same netowk- this can be different in different countrys.
some countrys (like russia) do not check for double imei, some- check.
you can get to know only by testing in own network

[BoOzer665]

can u give us a pic to show where this txb/rxb under the bat ... d i have to remove lable to see them

pic can be better idea

[BoOzer665]

and another Q . ... if i want to flash the second cpu , are flash files available at support .. or its just the same flashfile for cpu 1 ....
this thread start to be for step by step discuttion ... hope we find usefull information on..

[InfinitySupport]

Originally Posted by BoOzer665

and another Q . ... if i want to flash the second cpu , are flash files available at support .. or its just the same flashfile for cpu 1 ....
this thread start to be for step by step discuttion ... hope we find usefull information on..

We have no flash files for 2nd CPU in support area yet for many models, only B889 model has flash files for both CPU.
Firmware for 1st and 2nd CPU has difference due to in most cases first CPU is 6226 (6227) and 2nd CPU is 6205.
So, backup files from 2nd CPU always welcome: [email protected]

@bamogil
Thank you very much !
Your instruction is very good and for sure it's really First In The World really good and clear description how to make this kind of work.

[akhil_bbsr]

rxa/txa for first cpu and rxb/txb for 2nd cpu must be used for backup ...this is a nice solution appricate ur hard work

[Faisal_Computer]

i already know any way thanks

Br

Faisal_Computer

[stivubicco]

for me i have been recieving many 2sim card with txa and rxa, txb and rxb but always i have been using txa and rxa and all work fine was i doing wrong coz after formatting all do fine and customer a happy again was i doing wrong