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] Galaxy note 3 sm-n900 repair imei without efs backup

Hello everybody, I have a galaxy note 3 sm-n900 and I have flashed another rom on my phone ,
but what I have got is null imei and I don't have any backup for efs file
I have tried to flash a stock rom but still have the same problem.
All what I want is a simple way to re-enter my IMEI that I have under my battery into my note 3.

mo.programmer said:
Hello everybody, I have a galaxy note 3 sm-n900 and I have flashed another rom on my phone ,
but what I have got is null imei and I don't have any backup for efs file
I have tried to flash a stock rom but still have the same problem.
All what I want is a simple way to re-enter my IMEI that I have under my battery into my note 3.
Click to expand...
Click to collapse
There is no simple way to enter the IMEI manually.
After flashing stock rom, try to reflash the modem (baseband) 1 or 2 times more.
Does the baseband stick after flashing? Check the Baseband Version with Phone INFO ★Samsung★ app (under FIRMWARE INFO section).

Re-flash stock rom and modem
vndnguyen said:
After flashing stock rom, try to reflash the modem (baseband) 1 or 2 times more.
Does the baseband stick after flashing? Check the Baseband Version
Click to expand...
Click to collapse
I need a way to patch my IMEI .
But if I have to flash stock rom how I can determine which version because I have lost mobile info after this operation,
and how I can reset efs if I want that.

mo.programmer said:
I need a way to patch my IMEI .
But if I have to flash stock rom how I can determine which version because I have lost mobile info after this operation,
and how I can reset efs if I want that.
Click to expand...
Click to collapse
As you can see in the screenshots, your baseband is null so you have to flash the modem or the stock firmware again.
The screenshot shows your original CSC is KSA (Saudi Arabia). Try to download this stock firmware and flash again.
Open Phone INFO ★Samsung★ app > Menu > 'Firmware Browser' > enter KSA into the CSC textbox > tap Go button to search for the firmware.

vndnguyen said:
As you can see in the screenshots, your baseband is null so you have to flash the modem or the stock firmware again.
The screenshot shows your original CSC is KSA (Saudi Arabia). Try to download this stock firmware and flash again.
Open Phone INFO ★Samsung★ app > Menu > 'Firmware Browser' > enter KSA into the CSC textbox > tap Go button to search for the firmware.
Click to expand...
Click to collapse
Actually I have flashed KSA rom on my phone and tried more than one stock rom ,and I have tried to flash five different modem files that I have found on the internet but nothing have changed, and that is the reason why I want a way to batch my IMEI because flashing new stock rom and new modem file have no sense.
Pleeeeeeeease Help I'm in need for solution.

mo.programmer said:
Actually I have flashed KSA rom on my phone and tried more than one stock rom ,and I have tried to flash five different modem files that I have found on the internet but nothing have changed, and that is the reason why I want a way to batch my IMEI because flashing new stock rom and new modem file have no sense.
Pleeeeeeeease Help I'm in need for solution.
Click to expand...
Click to collapse
OK no problem.
The problem now is that your baseband is NULL, so you must reflash a vaild baseband.
Follow this instruction: http://forum.xda-developers.com/galaxy-note-3/general/ref-galaxy-note-3-sm-n9005-gsm-modems-t2842806

vndnguyen said:
OK no problem.
The problem now is that your baseband is NULL, so you must reflash a vaild baseband.
Follow this instruction: http://forum.xda-developers.com/galaxy-note-3/general/ref-galaxy-note-3-sm-n9005-gsm-modems-t2842806
Click to expand...
Click to collapse
It's for sm-n9005. Don't flash that modem on sm-n900.
Sent from my SM-N900 using Tapatalk

mo.programmer said:
Actually I have flashed KSA rom on my phone and tried more than one stock rom ,and I have tried to flash five different modem files that I have found on the internet but nothing have changed, and that is the reason why I want a way to batch my IMEI because flashing new stock rom and new modem file have no sense.
Pleeeeeeeease Help I'm in need for solution.
Click to expand...
Click to collapse
Flash this modem."N900_XXUENE1_MODEM_CWM"
Need a file?pm me.
Sent from my SM-N900 using Tapatalk

meetpatel said:
It's for sm-n9005. Don't flash that modem on sm-n900.
Sent from my SM-N900 using Tapatalk
Click to expand...
Click to collapse
I mean the instruction to flash the modem. The OP should find the proper modem by himself.
Sent from my SM-N9005 using Tapatalk

unfortunately
meetpatel said:
Flash this modem."N900_XXUENE1_MODEM_CWM"
Need a file?pm me.
Sent from my SM-N900 using Tapatalk
Click to expand...
Click to collapse
unfortunately,none of the above solution have worked for me
1. should I flash a specific stock rom for sm-n900 (how I can determine which one because I have lost the original information)
2. should I try to clear EFS with odin ( when try to flash modem).
3. should I try a custom rom that make sense for this kind of problems ( help to choose !!!).
4. should I apply an update a zip file from CWM mode ( which file should I Use)
5. Is there any ADB command that can batch my IMEI.
6. Is it useful to take EFS backup from another note 3 sm-n900 (what I have to do after that).
I feel so lost, I need a help PROFESSIONAL

Tried this? Worked for me.
http://forum.xda-developers.com/showthread.php?t=2507403

Finally got the solution
Dear all thanks for everyone who try to help me
I have got the solution for my problem
1- just try to flash a stock rom for note 3.
2- and then root it.
3- delete the efs folder.
4- reboot the phone.

mo.programmer said:
Dear all thanks for everyone who try to help me
I have got the solution for my problem
1- just try to flash a stock rom for note 3.
2- and then root it.
3- delete the efs folder.
4- reboot the phone.
Click to expand...
Click to collapse
How can you restore the IMEI by deleting the EFS folder?

IMEI
vndnguyen said:
How can you restore the IMEI by deleting the EFS folder?
Click to expand...
Click to collapse
I have not restored it, but I got a new IMEI , now my wireless work, and the baseband appear.

mo.programmer said:
Dear all thanks for everyone who try to help me
I have got the solution for my problem
1- just try to flash a stock rom for note 3.
2- and then root it.
3- delete the efs folder.
4- reboot the phone.
Click to expand...
Click to collapse
How can I delete efs folder ?
can you give a details, thanks

hi everyone my mobile note 3 exynos imei null and baseband unknown how to repair imei can anyone help me.

As per multiple threads restore your backed up EFS folder.
OR Read this thread
Or try flashing stock firmware via Odin .

bro i have flashed two times with odin and flash v4.3 also but not got any solution ,
bro if you know about any tool for repair or restore imei of this device please tell me,
i am trying to repair imei with z3x tool but in this tool not showing n900 exynos model.

Suggest a phone repair shop.
Illegal methods of IMEI fixes etc are not allowed on XDA .

Thanks for your suggestion
but i am a hardware mechanic and i am trying to learn software for better experience THANKS

[Q] Nandroid data deleted accidently

Hello xda members ,
I'm using GT i9500
1- As the title says , i accidentally deleted my nandroid backup files. I've already installed oscan rom and now i don't have any backup. What do i do?
2- Does sammobile website uploads some sort of nandroid backup? Can i directly flash roms from there?
3- Should i take imei backup ? Since i have no idea about these stuffs + i lost my nandroid backup data.
I don't want to roll back to old touchwiz but i would like to install the stock samsung's upcoming 5.0 and i also want to be on the safer side , pls answer my questions based on the above needs.

ALWAYS make an IMEI backup. TWRP has an option to back up the EFS folder, which is where your IMEI is stored. Another option that doesn't require TWRP is to install Samsung Tool and make a backup through it.
If you go to the Sammobile Firmware Checker and enter your model and country it will provide you with a link to the current firmware for your device. Click on the link and you're taken to a page where you can download the file to the hard drive of your computer. The page also provides detailed instructions on how to restore the firmware, using Odin.

Strephon Alkhalikoi said:
ALWAYS make an IMEI backup. TWRP has an option to back up the EFS folder, which is where your IMEI is stored. Another option that doesn't require TWRP is to install Samsung Tool and make a backup through it.
If you go to the Sammobile Firmware Checker and enter your model and country it will provide you with a link to the current firmware for your device. Click on the link and you're taken to a page where you can download the file to the hard drive of your computer. The page also provides detailed instructions on how to restore the firmware, using Odin.
Click to expand...
Click to collapse
so i'm not at any risk yet ?

Have you made your EFS backup yet? If not, do so now. Other than that, you should be fine.

[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.

Imei Unknown G900F

Hello,
one week ago install a custom rom miui and wifi can´t enable, people recomend install BL_G900FXXU1ANE2.tar , CP_G900FXXU1ANE2.tar by odin, i install but i have another problems with miui and try other custom rom with mashtmallow, aparently all works fine 3 or 4 days, but... today i lost signal , if i check my serial imei show unknown and I DON´T HAVE EFS COPY.
Folder efs exist with a lot of files and folders, but i supose anything is corrupted because don´t work
I have try to download in samfiwmware G900FXXS1CPH2_G900FATL1CPF1_ATL.zip, flash with odin restart but... only can see samsung all time (more 30 minuts),
I remember one month ago I have a backup with recovery clockworkmod, recover and now mobile restart but the same... imei unknown.
Any idea to recover my samsung ??

id try another tar from sammobile.com/firmwares

youdoofus said:
id try another tar from sammobile.com/firmwares
Click to expand...
Click to collapse
I download 4.4.2 in sammobile, this rom can configure wizard not hangs with samsung logo but... when i finish the same i don´t have imei.
I don´t know if erase folder efs and hope when i install sammobile rom create automaticly ??
thanks for your help

darkons2001 said:
I download 4.4.2 in sammobile, this rom can configure wizard not hangs with samsung logo but... when i finish the same i don´t have imei.
I don´t know if erase folder efs and hope when i install sammobile rom create automaticly ??
thanks for your help
Click to expand...
Click to collapse
well, heres some stuff about this exact topic on the S4. It says that if youre 100% sure that the efs is borked, then delete the folder and itll put you into permanent safe mode, but then gives instructions on how to exit permanent safe mode
http://forum.xda-developers.com/showthread.php?t=2392632