Baseband Unknown IMEI unknown

[Pariki]

Devs,

Please help. My phone says Baseband Unknown IMEI unknown,

It was my fault, I flashed debloated C9000 China Rom on my SM-C900f Indian variant. But my bad. I am totally lost now.

I flashed old, new & latest Stock Indian roms but no luck. Phone crashes & Baseband Unknown IMEI unknown problem. No network & phone restarts automatically.

Someone please help what Should I do.
.. Thank you.

 

[travis82]

Flash stock firmware again via odin.

 

[Pariki]

Flash stock firmware again via odin.

Did that. Been doing it from 2 days.. I have 4 stock roms.
Pls help...

I have a Twrp backup of old Rom when I rooted the phone.
Can that help?

 

[dondeep]

Did that. Been doing it from 2 days.. I have 4 stock roms.
Pls help...

I have a Twrp backup of old Rom when I rooted the phone.
Can that help?

restore EFS back up from your TWRP back up

 

[Pariki]

restore EFS back up from your TWRP back up

I checked the two backup & it has some 5 files. None says efs backup.
When tried to restore the backup, there is only System to restore.

 

[dondeep]

I checked the two backup & it has some 5 files. None says efs backup.
When tried to restore the backup, there is only System to restore.

try this

https://forum.xda-developers.com/galaxy-s2/general/guide-recover-imei-9-steps-t1264021

 

[Pariki]

Nothing worked for me &
I had to send my C9 Pro to Samsung service center.

The Service center guy told the warranty is void as I have rooted the phone & they cannot repair it ( I did flash original stock rom to make it official).
But nothing worked out. My phone is dead now just because I flashed C9000 on C900F.

 

[travis82]

Nothing worked for me &
I had to send my C9 Pro to Samsung service center.

The Service center guy told the warranty is void as I have rooted the phone & they cannot repair it ( I did flash original stock rom to make it official).
But nothing worked out. My phone is dead now just because I flashed C9000 on C900F.

Your phone is dead because you did not backup efs. If you would of done that you never would of had an issue. Where is your mobile now? Maybe donate it to a dev if your can't get it repaired.

 

[Pariki]

Your phone is dead because you did not backup efs. If you would of done that you never would of had an issue. Where is your mobile now? Maybe donate it to a dev if your can't get it repaired.

Hi Travis,

I got my phone repaired at Samsung Service Center for free.
I know someone there.
They changed the whole Motherboard & gave it.
It's working perfectly fine now.

I backed up the EFS partition & rooted the phone & using Xposed framework. The way I want the phone.

Eagerly waiting for Lineage OS for C900F Indian Variant.

:good:

 

[travis82]

Hi Travis,

I got my phone repaired at Samsung Service Center for free.
I know someone there.
They changed the whole Motherboard & gave it.
It's working perfectly fine now.

I backed up the EFS partition & rooted the phone & using Xposed framework. The way I want the phone.

Eagerly waiting for Lineage OS for C900F Indian Variant.

:good:

Right on! Could use a box to do the same without a mobo swap too. Lineage is getting there. Be patient.

 

[Pariki]

Right on! Could use a box to do the same without a mobo swap too. Lineage is getting there. Be patient.

Yes. I first tried to get the phone fixed locally using 2 boxes. But no luck. They told me to take the phone to Service Centre. I took it to Samsung Service Centre & they used the box to fix I. But they could not.
They told me they have to replace the 64 GB part which is on Motherboard & they replaced it.
Will wait patiently for the Lineage OS..
Thanks.. :good:

 

[anwar726]

here is your solution.....

download efs.img file as i have attached ....
download any TWRP for c900f form google.
and put efs.img file into internal or extarnal starage......
now in TWRP use tarminal emulator
and use this command
adb shell
su
dd if=/sdcard/efs.img of=/dev/block/bootdevice/by-name/efs

please dont edit any command
please press thanks for helping:laugh::laugh::laugh::laugh::laugh::angel::angel::angel:

 

[Himchawla]

IMEI Not restored

download efs.img file as i have attached ....
download any TWRP for c900f form google.
and put efs.img file into internal or extarnal starage......
now in TWRP use tarminal emulator
and use this command
adb shell
su
dd if=/sdcard/efs.img of=/dev/block/bootdevice/by-name/efs

please dont edit any command
please press thanks for helping:laugh::laugh::laugh::laugh::laugh::angel::angel::angel:

Well i tried as you said
its not quite working
serial number was restored but not imei and baseband
when i dial *#06# i only see serial number
pls help.

 

[abdullah alotaibi]

by odin install 4 file rom

 

[[email protected]]

download efs.img file as i have attached ....
download any TWRP for c900f form google.
and put efs.img file into internal or extarnal starage......
now in TWRP use tarminal emulator
and use this command
adb shell
su
dd if=/sdcard/efs.img of=/dev/block/bootdevice/by-name/efs

please dont edit any command
please press thanks for helping:laugh::laugh::laugh::laugh::laugh::angel::angel::angel:

i m also falsh c9000 rom and imei lost. please give solutions for us.

 

[[email protected]]

Mine done. I restore efs settings.

 

[Omani1]

i have c9 pro, i forget pin number. can someone help solve it with remove data?

 

[sharjeel57]

c900f

Mine done. I restore efs settings.

how? Plase share the procedure?

 

[raghu0421]

I have the same problem. Can i fix this problem myself! .Is there anyone could help. Please!

 

[mr.mydoom]

I have the same problem. Can i fix this problem myself! .Is there anyone could help. Please!

Try

Boot into TWRP recovery.
From TWRP’s main screen, select Advanced » then Terminal.
Type the following commands in terminal (one by one):
dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst1
dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst2
Reboot device.

or via ADB

adb shell 'dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst1'
adb shell 'dd if=/dev/zero of=/dev/block/bootdevice/by-name/modemst2'
adb reboot