Database Users

[Q] IMEI null and Baseband Unknown, No SIM detected on Samsung Galaxy Note 3 sm n900

Hello developers,
I found the exact same problem posted on xda developers fourm but none of the posts were answered completely or solved.
I rooted my Sm n900 without any problems, installed CWM recovery, installed SuperSu and installed VN Rom for galaxy note 3 (referred this from some Chinese guy on web (since i cant post third party links) its galaxynote3root dot com.
At first i didnt check efs backup option and installed VN rom without any problems (no imei loss or baseband unknown) on my own phone.
But when rooted one of my friends SM n900 with exact same method as i did earlier (but i checked create efs backup this time), i got screwed.
I tried EFS professional, but when i try to put his phone in RMNET + DM + MODEM by pressing *#0808#, and run efs software, and click either qualcommn or efs professional button, it doesnt recognise the device and says not connected.
I tried various other options as well such as rerooting, reinstalling the rom, reinstalling OEM rom, and other roms as well. Every thing is fin except IMEI and baseband null/unknown.

I had a problem like that. On my note 2 .i flashed patition file in odin and it was fixed.

bonebeatz1234 said:
I had a problem like that. On my note 2 .i flashed patition file in odin and it was fixed.
Click to expand...
Click to collapse
Which partition? EFS? Problem is, now i dont have any backups of EFS partition or folder. I am trying to flash modem via odin from phone mode. After that i will have tried everything and will be stuck with a bricked cell forever

rabinpro said:
Which partition? EFS? Problem is, now i dont have any backups of EFS partition or folder. I am trying to flash modem via odin from phone mode. After that i will have tried everything and will be stuck with a bricked cell forever
Click to expand...
Click to collapse
you should bring to the service center to record the IMEI number.

root your device and flash xxuene1 modem from recovery.
Modem is available on xda..search
I did the same and it worked for me

Not worked

[Q] TWRP Backup request

Hi, after update mi gionee e7 to 4.4.2 Kitkat my imei say unknow, i restored with efs pro.. But i dont have any gsm signal...
i have made a bakcup before flash rom but when i restore it the phone dont load Software always show Gionee Logo And reset
My Idea is get a original TWRP EFS bakcup from a stock software 4.2 and put it to my phone... To restore NV Gonfiguration to default.... after change the esn and imei by my imei... anyone can help me please?? a twrp backup dont cost anything... :crying:
Or betther get a QCN backup... with Imei 0 but stock configuration... please common help me.. i Know us can help me people... this world has a good peoople

me too....

jdgomez001 said:
Hi, after update mi gionee e7 to 4.4.2 Kitkat my imei say unknow, i restored with efs pro.. But i dont have any gsm signal...
i have made a bakcup before flash rom but when i restore it the phone dont load Software always show Gionee Logo And reset
My Idea is get a original TWRP EFS bakcup from a stock software 4.2 and put it to my phone... To restore NV Gonfiguration to default.... after change the esn and imei by my imei... anyone can help me please?? a twrp backup dont cost anything... :crying:
Or betther get a QCN backup... with Imei 0 but stock configuration... please common help me.. i Know us can help me people... this world has a good peoople
Click to expand...
Click to collapse
flash 4.2.2 boot.img(with fastboot) then flash with GNQC

kankees said:
flash 4.2.2 boot.img(with fastboot) then flash with GNQC
Click to expand...
Click to collapse
Please, for Windows 7 x64, what adb/fastboot drivers work???
Got it...
Now i have also adb...
But still no signal...

kankees said:
flash 4.2.2 boot.img(with fastboot) then flash with GNQC
Click to expand...
Click to collapse
i Have now a Original Stock firmware 4.2.2 flashed with GQNC and same can not get signal.. I have do all... and test all programs without results... so i think the only way is with stock backup from working phone

[Q] HELP NOTE 3 N900 UNKNOWN BASEBAND, NULL IMEI completely out of Nowhere!

Hello Fellas, am posting here as I haven't found help elsewhere. Kindly Respond to my woes. I have a rooted Galaxy Note 3 N900 running official Lollipop with IMEI Null/Null and No Baseband version. The IMEI just disappeared totally out of the blue as no custom ROM has been flashed on the device!! This has happened 2 months after updating from 4.3 Jelly bean. With no prior EFS Backup here's what I have tried:
1. EFS Professional (backup&restore complete but no luck)
2. EFS Restore express ( backup.bat>Odin restore)
3. GSII Repair tool
After hitting no luck with the above tools and without any "/EFS mount errors" in recovery either and WIFI working fine, I came to a conclusion that most probably the EFS folder partition on my Note 3 is still intact and most probably this could be a case of a bad modem which would explain the loss of Baseband Version and thus the Null IMEI. So I tried flashing back to KitKat with N900XXUENG1 firmware and separately flashed a few modems compatible with Samsung's new EFS System: N900XXUENG1_MODEM, N900_XXUENF2_MODEM_CWM and also gave a shot at recommended N900_XXUENE1_MODEM_CWM.ZIP which seems to restore baseband for many users with this issue but this failed as well. After much searching I found a 4file_N900XXUGBNL8 Lollipop Firmware with PIT from Dev-Host, flashed all files in Odin&even repartitioned the device but still no baseband!!! WIFI&everything else runs smooth except the damn baseband/Null IMEI! Almost Exhausted my options...
Now I trust we have some informed members and developers here, NEED YOUR VALUABLE IDEAS HERE mates! Someone, anyone.....Thanks!

Have got any guarantee of the device?If so,send it to service ıf your guarantee continiues.
If you bought the device from another country,This may occur ıf you didn't register it.(In my country this is how it works.Turkey)
Or someone cloned your imei,check your imei ıf it is valid.
This is not because you upgraded your device to android 5.
If ıt was the case,you would have already faced the problem after just the flash.
I would say flash another modem
But,You say you tried flashing other modems.So no luck with that.
I had seen s3 with the same problem.I had flashed a modded modem.
It worked.I dont know if there is one for your device.
Briefly this is an imei/modem problem.
I don't know ıf the suggestions above help you.
I hope so.
Good luck.

try flashing stock rom from sammobile via odin. you need to backup efs folder everytime you flash a new rom, that's my opinion. may be wrong.

I think I used to had this problem with my Note 2 as well. If you come from 4.3 you should flash stock ROM Jelly bean 4.3 from Sammobile or Samsung-updates website. Then flash lollipop 5.0 over 4.3 when you can see your IMIE. Maybe it will work.

So. If u in L bootloader. U must! Flash the L modem that sometimes didnt get flashed by the odin while flashing stock rom. So just extract the modem.img and things for modem. Then just flash it using dd command or make flashable zip. Then it works fine. I have it on s4 exynos. That if i in L bootloader then even i install kitkat rom with L bootloader. U must still flash the L modem. K. Hope it works

1. İf you couldnt recover with efs professional , probably you've been lost your original imei files like nv_data.bin etc. and there is no backup...
2. So try to remake this kind of files with-again- with efs professional. But there is not so much info about this "creation" process.
3. I had the same situation. . . . And i'm still sorry. . . ( . . . The other solution is JTAG, more easy, cheaper in total and psychologicaly healty !!!)
GOOD LUCK....

m6112 said:
1. İf you couldnt recover with efs professional , probably you've been lost your original imei files like nv_data.bin etc. and there is no backup...
2. So try to remake this kind of files with-again- with efs professional. But there is not so much info about this "creation" process.
3. I had the same situation. . . . And i'm still sorry. . . ( . . . The other solution is JTAG, more easy, cheaper in total and psychologicaly healty !!!)
GOOD LUCK....
Click to expand...
Click to collapse
All EFS folder files are present including nv_data.bak&.bin Am a bit reserved to go the JTAG way just yet.

white7561 said:
So. If u in L bootloader. U must! Flash the L modem that sometimes didnt get flashed by the odin while flashing stock rom. So just extract the modem.img and things for modem. Then just flash it using dd command or make flashable zip. Then it works fine. I have it on s4 exynos. That if i in L bootloader then even i install kitkat rom with L bootloader. U must still flash the L modem. K. Hope it works
Click to expand...
Click to collapse
Thanks for that but as I already said I was lucky to find a 4file partitioned Lollipop ROM with separate modem. Flashed that through Odin and even repartitioned the device but that hit a rock as well!

longcoming said:
Have got any guarantee of the device?If so,send it to service ıf your guarantee continiues.
If you bought the device from another country,This may occur ıf you didn't register it.(In my country this is how it works.Turkey)
Or someone cloned your imei,check your imei ıf it is valid.
This is not because you upgraded your device to android 5.
If ıt was the case,you would have already faced the problem after just the flash.
I would say flash another modem
But,You say you tried flashing other modems.So no luck with that.
I had seen s3 with the same problem.I had flashed a modded modem.
It worked.I dont know if there is one for your device.
Briefly this is an imei/modem problem.
I don't know ıf the suggestions above help you.
I hope so.
Good luck.
Click to expand...
Click to collapse
It's an old device, no warrants. Am indeed looking at the possibility of someone else allocating the IMEI to their device, though i doubt. But if that was the case shouldn't the Baseband at least be present?

Did you try downgrading to 4.3 with official stock files?
If not,give it a shot.

Droidsan said:
It's an old device, no warrants. Am indeed looking at the possibility of someone else allocating the IMEI to their device, though i doubt. But if that was the case shouldn't the Baseband at least be present?
Click to expand...
Click to collapse
I have explained it earlier, Actually it is kernel. Newer kernel makes some changes on EFS partition and that changes can not be read by old kernel but in this case once you flash newer modem it will be solved. If your issue doesn't solved by flashing latest stock ROM then only possibility is messed up EFS partition and for that you must have a backup which was created when your device was normal. If your EFS partition is corrupted and you don't have backup then i think only option you have is to go to service station they can repair it easily. Though your device is not under warranty but you have official bill then still they can do it with paid service. Now a days samsung have changed policy and restoring IMEI they needs to do it online with samsung server (this information I got from service center owner in my city who is my friend and he did same for one of my friend)

UPDATE:
dr.ketan said:
I have explained it earlier, Actually it is kernel. Newer kernel makes some changes on EFS partition and that changes can not be read by old kernel but in this case once you flash newer modem it will be solved. If your issue doesn't solved by flashing latest stock ROM then only possibility is messed up EFS partition and for that you must have a backup which was created when your device was normal. If your EFS partition is corrupted and you don't have backup then i think only option you have is to go to service station they can repair it easily. Though your device is not under warranty but you have official bill then still they can do it with paid service. Now a days samsung have changed policy and restoring IMEI they needs to do it online with samsung server (this information I got from service center owner in my city who is my friend and he did same for one of my friend)
Click to expand...
Click to collapse
Thank you Dr.Ketan for that information. You have been a great help to many. I have followed your posts about this issue and I feel there is still hope.
UPDATE:
I WAS ABLE TO RESTORE THE BASEBAND AND NOW THE IMEI IS GENERIC, READS 004999010640000. [/B] I was able to restore nv_data backup from /Efs folder and deleting bad nv_data. Here's what I did:
Using root Explorer in /EFS:
Deleted corrupt files;
nv_data.bin ( 18 April 2015)
nv_data.bin.md5 (18 April 2015)
Renamed backup files (dated 31 Jan 2015) to apply;
.nv_data.bak > nv_data.bin
.nv_data.bak.md5 > nv_data.bin.md5
Using ADB shell:
Code:
adb shell
su
umount /efs
mke2fs /dev/block/mmcblk0p3
mount -w -t ext4 /dev/block/mmcblk0p3 /efs
Reboot
However, the baseband and generic IMEI come&go across reboots and seems not to stick permanently. Any possible steps from here???

NOTE: Previously I have been able to restore Unknown Baseband and Null IMEI in Galaxy S2 i9100 using the above adb method (Code Only) http://www.selftechgenius.com/?p=284

NOTE: Previously I have been able to restore Unknown Baseband and Null IMEI in Galaxy S2 i9100 using the above adb method (Code Only) http://www.selftechgenius.com/?p=284

Try this out
I always have that problem when I downgrade to jellybean but solving it is easy. Just flash THIS modem file under the AP option Odin. Tell me if it works.

Muthumbi said:
I always have that problem when I downgrade to jellybean but solving it is easy. Just flash THIS modem file under the AP option in odin mode. Tell me if it works.
Click to expand...
Click to collapse
If flashing modem via Odin you MUST turn off the phone then start it in DL mode. Simply doing a 'reboot' into DL mode will not let the modem be flashed.

Help Needed [IMEI-00000]

Dear Xda Members
My phone Details
Model : SM-G950U ( UNLOCKED NOW U1 )
Chipset : Snapdragon MSM8998
Issue : I backedup efs from engboot and selected clear & restore but after reboot it is showing imei all zeros
My phone now rooted using PartCyborgRom
is there any way restore my imei ??
I have z3x imei backup .tar file ( sadly with zeros )
Please some one help me to restore my EFS

https://youtu.be/LFag6emUYAw

rajeshca911 said:
Dear Xda Members
My phone Details
Model : SM-G950U ( UNLOCKED NOW U1 )
Chipset : Snapdragon MSM8998
Issue : I backedup efs from engboot and selected clear & restore but after reboot it is showing imei all zeros
My phone now rooted using PartCyborgRom
is there any way restore my imei ??
I have z3x imei backup .tar file ( sadly with zeros )
Please some one help me to restore my EFS
Click to expand...
Click to collapse
Wrong forum..
Install a factory test rom, backup efs, install whatever rom you want to install and restore efs if it doesn't work already.

skks said:
Wrong forum..
Install a factory test rom, backup efs, install whatever rom you want to install and restore efs if it doesn't work already.
Click to expand...
Click to collapse
Thanks for your reply man !!
if anything went wrong with my android i approach xda only for help.
I tried flashing factory bianary and backed up efs then reflash with latest firmware still zero

guys
thanks i restored it. using efs pro.
Thanks to lyriquidperfection who have developed efs pro tool

rajeshca911 said:
guys
thanks i restored it. using efs pro.
Thanks to lyriquidperfection who have developed efs pro tool
Click to expand...
Click to collapse
hello friend please help me imei ta 000000 in my s8

I have an s8 950f I had installed soldier pie rom 9.0....before installation I backed up my rom using twrp...after the installation I end up with imei 000000...I had try restore EFS folder using twrp with no success ..can someone help me please ..everybody is telling me that I have to change de moderbaord ..I don't have that kind of money I need help

rudmar said:
I have an s8 950f I had installed soldier pie rom 9.0....before installation I backed up my rom using twrp...after the installation I end up with imei 000000...I had try restore EFS folder using twrp with no success ..can someone help me please ..everybody is telling me that I have to change de moderbaord ..I don't have that kind of money I need help
Click to expand...
Click to collapse
Restore backup then flash official stock firmware using odin.without factory rest or hard rest.
If its same no changes.get new imei using online remote service.search on Ebay or imeiguru website.

can u explain
rajeshca911 said:
guys
thanks i restored it. using efs pro.
Thanks to lyriquidperfection who have developed efs pro tool
Click to expand...
Click to collapse
sir can u explain that with more details because my phone its verizon how to fix that

Help with a twrp backup

Hello, i need a backup from a j730f with twrp , because i corrupted my modem and efs irecoverable, and it won't repair with the combination fx30. Can you help me with a twrp backup of efs and modem?

From stock rom? Or a custom can work?

samuel.freitos said:
From stock rom? Or a custom can work?
Click to expand...
Click to collapse
Can work a custom too no problem .

Someone please?

i can help you with modem backup, but i can't send you EFS bsc of my IMEI
@twistergear
It will work, but, both phones will have the same IMEI #. That's the reason why no one will share their efs folder (files).
The best way for you guys is to send your phones to the service centers, so they can restore your own original imei numbers.
Click to expand...
Click to collapse
or you can try this: https://forum.xda-developers.com/showpost.php?p=17587351&postcount=1