[Q] Nandroid data deleted accidently - Galaxy S 4 Q&A, Help & Troubleshooting

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.

Related

[FIX] Corrupt EFS - When downgraded from 4.3 to 4.2.2

TD:LR Get back to Stock ROM for your country and then restoring EFS the backup will help in getting back your IMEI.
Click to expand...
Click to collapse
Requirements
1. Stock country ROM + Rooted if necessary
2. Any EFS backup
3. Same tool used in (2) to restore it back.
Situation
Currently I was 4.3 XXUGML2 ArchiDroid V1.7.3. Faced a lot of issues with any 4.3 ROM i tried. So I though I will go back to 4.2.2 OXAME7 [EFS v1] which was real stable for me. I flashed 4.2.2 again via Odin. After successful boot I had lost my IMEI where the code was generic 0049***. Here are the things I tried to do:
1. I had efs.tar.gz file which I had created when I was on 4.2.2 before flashing 4.3 with help of kTool. I tried to restore the same with help of the same app, but that did not work at all.
2. I had made EFS backup via custom backup and restore of Philz CWM Recovery. But that backup was in Internal SD. After I had flashed 4.2.2 from 4.3 with Odin the internal was completely wiped. So I had lost my 2nd and final alternative backup.
3. Tried to flash XXEMG4 modem which is actually EFS v2 modem, but that too didn't solve the issue.
Now why did this happen?
I am not sure, but my guess was that this happened because the 4.2.2 ME7 ROM had EFS v1 path whereas the 4.3 ROM was EFS v2 path. Any other possible reasons?
The Fix
As a last resort
1. I downloaded the Stock ROM for my country (India) which is XXEMH4 via odin --> No IMEI yet
2. Tried to restore the EFS via kTool again.
3. Profit + hefty amount of relief.
It was a great relief for me to see the IMEI back and thought of sharing it here. Hope this information will be helpful to others. :good:
Edit:
I think this method too would have helped, but did not bump into this thread earlier: http://forum.xda-developers.com/showthread.php?t=2531221
Well this work with S4 too?
kachrukamble said:
Well this work with S4 too?
Click to expand...
Click to collapse
I'm not sure.. But flashing stock ROM and then restoring EFS can be applied to any Samsung phone with IMEI issues as last resort.
Sent from my GT-I9100 using Tapatalk
Mod Edit
Please refer to the stickies in General before posting.
Thread closed
malybru
Forum Moderator

Need root badly

I have brought a s4 i9500 4.2.2 I9500XXUAMDK as a replacement for my xperia j, Now I want to root as far as my research there is no Knox in my phone, so can I root it using cf auto root. So Samsung will never knew I have rooted in as there is no Knox! Please help
Try towelroot.
It may surprise you
shiruuu.samad said:
I have brought a s4 i9500 4.2.2 I9500XXUAMDK as a replacement for my xperia j, Now I want to root as far as my research there is no Knox in my phone, so can I root it using cf auto root. So Samsung will never knew I have rooted in as there is no Knox! Please help
Click to expand...
Click to collapse
worf_1977 said:
Try towelroot.
It may surprise you
Click to expand...
Click to collapse
Mate
If you are in I9500 you are in a knox free bootloader , you can do whatever you want , root , install custom rom , go back to stock ..no knox .
Just do not upgrade the bootloader , no stock upgrade , no OTA
Towelroot does not work on exynos processors, stay on 4.2.2 use stock base roms if you like the stock TW look
MAX 404 said:
Mate
If you are in I9500 you are in a knox free bootloader , you can do whatever you want , root , install custom rom , go back to stock ..no knox .
Just do not upgrade the bootloader , no stock upgrade , no OTA
Towelroot does not work on exynos processors, stay on 4.2.2 use stock base roms if you like the stock TW look
Click to expand...
Click to collapse
I hate touch Wiz am going to flash cyanogenmod, so can I use cf auto root to root my phone? And r u sure s4 i9500 4.2.2 I9500XXUAMDK is Knox free? I don't see 0 multiplied by some thing in download more only
Odin mode
Modal number :i9500
Binary :Samsung
Status fficial
This confirmed that am Knox free
Thanks
And can't I use cm11 once rooted? Or should I only use 4.2.2 roms?
shiruuu.samad said:
And can't I use cm11 once rooted? Or should I only use 4.2.2 roms?
Click to expand...
Click to collapse
Anything you want ....cm , tw any version 4.2.2 , 4..3 , 4.4.2 , 4.4.4
Root , install a custom recovery and flash.....
If you want to go back to stock use only 4.2.2 stock roms so you do not upgrade the bootloader ( preferably the same one you have now) , backup before you do anything , do not forget to back up also your efs folder
MAX 404 said:
Anything you want ....cm , tw any version 4.2.2 , 4..3 , 4.4.2 , 4.4.4
Root , install a custom recovery and flash.....
If you want to go back to stock use only 4.2.2 stock roms so you do not upgrade the bootloader ( preferably the same one you have now) , backup before you do anything , do not forget to back up also your efs folder
Click to expand...
Click to collapse
I have 2
questions
1)can I root using cf auto root
2)what is efs folder, will it backed up when I do nanandriod backup?
MAX 404 said:
Anything you want ....cm , tw any version 4.2.2 , 4..3 , 4.4.2 , 4.4.4
Root , install a custom recovery and flash.....
If you want to go back to stock use only 4.2.2 stock roms so you do not upgrade the bootloader ( preferably the same one you have now) , backup before you do anything , do not forget to back up also your efs folder
Click to expand...
Click to collapse
1: Try it and find out. I can't answer this as I have a i9505 and rooted it using Towelroot.
2. The EFS folder is where the device's IMEI and other relevant configuration data are stored. If the data is corrupted either a nandroid backup or a copy of the EFS folder contents should restore the device to working order.
shiruuu.samad said:
I have 2
questions
1)can I root using cf auto root
2)what is efs folder, will it backed up when I do nanandriod backup?
Click to expand...
Click to collapse
Hi,
You can use cf root or flash (odin) philz touch and once there go to Philz setting and chose re-root system
The efs folder is not backup by nandroid it must be done separately you can do it with philz recovery Backup and restore/custom backup and select efs or use apps like Galaxysim unlock , it has an option to do it what is is well describe by @Strephon Alkhalikoi in the post above this , once again towelroot does not work in exynos S4
Thanks for your time! Am familiar with cf auto root, but Philz one seems easier as I also get recovery with it, can u link me to Philz recovery and root?Again huge thanks, am not using towel root?
MAX 404 said:
Hi,
You can use cf root or flash (odin) philz touch and once there go to Philz setting and chose re-root system
The efs folder is not backup by nandroid it must be done separately you can do it with philz recovery Backup and restore/custom backup and select efs or use apps like Galaxysim unlock , it has an option to do it what is is well describe by @Strephon Alkhalikoi in the post above this , once again towelroot does not work in exynos S4
Click to expand...
Click to collapse
But how can I restore efs? Sorry am new here i know all about xperia rooting stuff and flashtool not familiar with Samsung and odin
@MAX 404: I'm running TWRP. Why then do I have "efs.info" and "efs.ext4.win" as part of my nandroid? Or is EFS actually hidden and what I got from the backup was only the files I could see?
shiruuu.samad said:
But how can I restore efs? Sorry am new here i know all about xperia rooting stuff and flashtool not familiar with Samsung and odin
Click to expand...
Click to collapse
That is easy , Galaxysimunlock and philz will do it for you provide you have the backup Both app will create a folder where it will put the backup( galaxysimunlock or clockworkmod) , make a copy and save it in the pc, when you ask to restore they will go and look for it in those folders and do everything ,
https://play.google.com/store/apps/details?id=com.spocky.galaxsimunlock&hl=en
there are different ways and apps but for me this 2 are the easiest ones
MAX 404 said:
That is easy , Galaxysimunlock and philz will do it for you provide you have the backup Both app will create a folder where it will put the backup( galaxysimunlock or clockworkmod) , make a copy and save it in the pc, when you ask to restore they will go and look for it in those folders and do everything ,
https://play.google.com/store/apps/details?id=com.spocky.galaxsimunlock&hl=en
there are different ways and apps but for me this 2 are the easiest ones
Click to expand...
Click to collapse
Am familiar with cf auto root but am rooting by Philz as I get root and recovery, can u link me to Philz recovery and root thread? Am not gonna use towel root?
Strephon Alkhalikoi said:
@MAX 404: I'm running TWRP. Why then do I have "efs.info" and "efs.ext4.win" as part of my nandroid? Or is EFS actually hidden and what I got from the backup was only the files I could see?
Click to expand...
Click to collapse
Not an expert on twrp , maybe they do include efs in their back up , which is brilliant , on philz is not part of the regular nandroid , you have to request it from the custom backup section.
MAX 404 said:
That is easy , Galaxysimunlock and philz will do it for you provide you have the backup Both app will create a folder where it will put the backup( galaxysimunlock or clockworkmod) , make a copy and save it in the pc, when you ask to restore they will go and look for it in those folders and do everything ,
https://play.google.com/store/apps/details?id=com.spocky.galaxsimunlock&hl=en
there are different ways and apps but for me this 2 are the easiest ones
Click to expand...
Click to collapse
So when I want to go back, first restore nanandriod backup, then open the app and then restore efs, right?
shiruuu.samad said:
Am familiar with cf auto root but am rooting by Philz as I get root and recovery, can u link me to Philz recovery and root thread? Am not gonna use towel root?
Click to expand...
Click to collapse
shiruuu.samad said:
So when I want to go back, first restore nanandriod backup, then open the app and then restore efs, right?
Click to expand...
Click to collapse
Hi
first part :
Philz thread , he recently decided not to support any more his project so in the future you may have to move on to other recoveries like twrp , but at the moment is still valid and up to date
http://forum.xda-developers.com/showthread.php?t=2280457
a little guide wrote by another user , is valid also for 4.2.2
second part yes BUT efs has to be restore if only there is problems with imei , wifi ....if not is not necessary nandroid is enough
MAX 404 said:
Hi
first part :
Philz thread , he recently decided not to support any more his project so in the future you may have to move on to other recoveries like twrp , but at the moment is still valid and up to date
http://forum.xda-developers.com/showthread.php?t=2280457
a little guide wrote by another user , is valid also for 4.2.2
second part yes BUT efs has to be restore if only there is problems with imei , wifi ....if not is not necessary nandroid is enough
Click to expand...
Click to collapse
OK that cleared all by doubts! Thanks for you time replaying to me! ?
MAX 404 said:
Not an expert on twrp , maybe they do include efs in their back up , which is brilliant , on philz is not part of the regular nandroid , you have to request it from the custom backup section.
Click to expand...
Click to collapse
Neither am I apparently.
The EFS backup in TWRP was only about 13KB, which is way too small apparently. I just downloaded Samsung Tool and used it to make a proper EFS backup. The final result was roughly 13MB in size, which seems more like it.
MAX 404 said:
Hi
first part :
Philz thread , he recently decided not to support any more his project so in the future you may have to move on to other recoveries like twrp , but at the moment is still valid and up to date
http://forum.xda-developers.com/showthread.php?t=2280457
a little guide wrote by another user , is valid also for 4.2.2
second part yes BUT efs has to be restore if only there is problems with imei , wifi ....if not is not necessary nandroid is enough
Click to expand...
Click to collapse
One more doubt, the Philz recovery will be a. Tar file, I put my phone in download mode select pda leave all rest same and flash till I see pass. Right?

[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.

Note 3 SM-N900 IMEI null Baseband unknown

Note 3 SM-N900 IMEI null Baseband unknown
Android 5.0
Firmware N900XXUEBOE3_N900ODDEBOB2_N900DDUEBOB1 (India)
How did the problem start? – my kid was playing some game in the phone and when I got it back I noticed the problem. It wasn’t because of flashing custom ROM or rooting. It could be due to firmware upgrade as upgrading was set on automatic but not sure.
What all have I done to solve the problem?
1. Rooted the phone and checked EFS folder. The EFS folder did not have .nv_data.bak file. And I don’t have backup of pre-problem EFS folder.
2. Downloaded stock firmware, extracted the modem file (bin) and flashed it, both with odin and cwm. Didn’t help.
3. Downloaded and flashed with odin stock firmware Android 4.4.2 N900XXUENI1_N900ODDENF1_N900DDUENG1_HOME.tar.md5 AND also N900XXUENG1_N900ODDENF1_INU. Didn’t help.
4. With each of the above stock firmware I flashed the following modem files:-
(1) N900_XXUDNA1_MODEM_CWM
(2) N900_XXUENE1_MODEM_CWM
(3) N900_XXUENF2_MODEM_CWM
(4) N900_XXUENG1_MODEM
(5) N900_XXUBMI2_MODEM_CWM
Didn’t work.
5. Used EFS Tool Samsung N7100 900 to back up EFS folder of a working Note 3 SM-N900 and restored the backedup folder to my phone – didn’t work.
6. Tried GSII_Repair app (both with my own EFS folder and my friends EFS folder. – didn’t work.
7. Tried to install xposed to use imei changer app. But xposed did not install as it is not yet compatible with Android SDK version 21 or processor architecture armeabi-v7a.
8. Tried Kies firmware upgrade and initialization, SM-N900 does not support initialization.
9. Tried secret code and got to Service Mode. But service mode is like a blank page of a lined book – no options shown.
10. And I tried factory reset with each of the above firmwares. Did Factory reset and wipe cache partition before flashing new firmware – didn’t work. Then tried it after flashing – didn’t work.
11. Also tried *#197328640# or *#*#197328640#*#* both didn’t work.
12. Tried fix mentioned in - http://forum.xda-developers.com/showthread.php?t=2507403
13. used advice in http://forum.xda-developers.com/showpost.php?p=52408318&postcount=87. now my phone is running Android 4.3 but imei null and baseband version unknown persists.
Can’t afford a new phone. Could somebody please help? And I hate 13 of anything,
http://forum.xda-developers.com/showthread.php?p=46436273
As posted by nowy57, need to delete the efs folder in recovery. That's for N9005. For N900 change it to dev/block/mmcblk0p3. You phone has ruined anyway so no harm in trying.
Sent from my SM-N920C
reply to rosli
Rosli59564 said:
http://forum.xda-developers.com/showthread.php?p=46436273
As posted by nowy57, need to delete the efs folder in recovery. That's for N9005. For N900 change it to dev/block/mmcblk0p3. You phone has ruined anyway so no harm in trying.
Sent from my SM-N920C
Click to expand...
Click to collapse
I'll do as you suggest but I have a question. Once I delete dev/block/mmcblk0p3 won't I need to replace it with an uncorrupted file? Doesn't the phone need dev/block/mmcblk0p3 for it to work?
It should be regenerated after reboot, assuming the block has corrupted and unable to write the efs/imei. I'm not sure if it should be the same for N900.
The guide is for old firmware and for N9005. If efs block isn't the issue, it won't work then. It worked for a very few people though. If you have nothing else to try ....
There is also a thread by mirek on solving softbrick/imei issue just a few topics away.
Sent from my SM-N920C
How to safely Repair IMEI Note 3 N900
Method:
1- Download and Install Samsung Drivers and Z3x pro-Samsung tool
2- Flash your phone with full firmware using Odin or Z3x Samsung tool
3- Root your phone with CF-autoroot or twrp+Supersu
4- Open Z3x Samsung tool, select N900, go to section repair then reset EFS
5- Your IMEI will be 004999010640000 then you have to repair by the original IMEI written on the back of your phone.
6- Select model n7000, go to section repair, write the original IMEI then click on repair.
Visit "learn & share gsm blog" to download the needed files
Full firmware:
Root files
Modem file
EFS file
Cert file
Visit for more info: https://www.learnandsharegsm.tk/2019/09/how-to-safely-repair-imei-note-3-n900.html
Watch Video on youtube: https://youtu.be/TRQeBQMaWpE
tarkusy said:
Method:
1- Download and Install Samsung Drivers and Z3x pro-Samsung tool
2- Flash your phone with full firmware using Odin or Z3x Samsung tool
3- Root your phone with CF-autoroot or twrp+Supersu
4- Open Z3x Samsung tool, select N900, go to section repair then reset EFS
5- Your IMEI will be 004999010640000 then you have to repair by the original IMEI written on the back of your phone.
6- Select model n7000, go to section repair, write the original IMEI then click on repair.
Visit "learn & share gsm blog" to download the needed files
Full firmware:
Root files
Modem file
EFS file
Cert file
Click to expand...
Click to collapse
That will change original IMEI, which is illegal and it is not allowed to provide such instructions here.
Rule No. 9
Mohamedkam000 said:
That will change original IMEI, which is illegal and it is not allowed to provide such instructions here.
Rule No. 9
Click to expand...
Click to collapse
I'm not asking anybody to change IMEI but the easy way to repair the original lost IMEI. READ THIS 5- Your IMEI will be 004999010640000 then you have to repair by the original IMEI written on the back of your phone..
I'm talking about your phone and how to repair it. stop saying what's not said. We help poeple solve their problems here. this method is not illegal. It's only a way yo rewrite the imei written on the back of your phone.

[FIX] Note 4 Exynos N910C/H/U Bootloop issue + Restoring EFS partition

If you have checked out, downloaded and flashed RaymanFX's latest CM13 Unofficial Nightly ROM for Note 4 N910C/H/U users here: http://forum.xda-developers.com/not...-cyanogenmod-13-semi-official-builds-t3259878 chances are you failed miserably at getting back to Samsung's Stock Firmware as you have encountered a series of unending bootloops. The bootloops exist because your downgrading from Android 6.0.1 Marshmallow (CM13 ROM) back to Android 5.1.1 Lollipop (Your previous Original Samsung Stock Firmware), however if you've received the Android Marshmallow Update for your Note 4 model number and region as an OTA Update from your device or Manually by downloading it from sammobile.com or any other external link and have flashed it before flashing CM13 no need to worry you won't need a backup of your Samsung firmware (Unless you want one) as you can perform a clean install of your Samsung Marshmallow Firmware via Odin v3.10.7 Here is where the fix lies; i have compiled a series of posts from 2 very helpful XDA Members from the community because from my experience i have managed to rescue my device using their methods which i will mention below.
Firstly if you have made an Efs partition backup from your previous Original Samsung Stock Firmware in the form of a .tar or .img file e.g "efs_backup_2015-06-01_02-37-16.tar" or "efs.img" respectively then you are good to go if not leave this thread.
Also you will need to download a Note 4 N910C/H/U Pit file corresponding to the region of your Samsung Firmware so here is a link to a selection of pit files. You will need to create an account at sammobile or simply sign if you have a current account to see the download links here: http://www.sammobile.com/forum/showthread.php?t=30022
Follow FR34K-B1B0's helpful post on getting back to stock here: http://forum.xda-developers.com/showpost.php?p=65414257&postcount=39 Skip the 1st Step since we are restoring our IMEI using our backed up Efs file and we will be using a different method to restore this backup.AND AFTER ODIN IS DONE FLASHING THE SAMSUNG FIRMWARE there is a chance that your phone will boot to the Stock Recovery and you will notice a message down there saying: "dm verification failed" so simply wipe data/factory reset and wipe cache and then reboot. Afterwards your phone should boot properly. Now close he's post and carry on down here.
After your phone boots up and you have set it you will notice that your mobile is not connected to your specific mobile carrier and you will see the Emergency calls only text on your lockscreen hence the Not registered on network error. Go to Settings--->About device--->Status and scroll down and you will search and find that your IMEI is literally not the one your phone has and that your Serial number is of an Android Serial number given to you from flashing CM13( Since it's a pure stock android software). If you want you can download the Phone INFO App from the Playstore to verify your device's information and if you do so you will notice that your Samsung Serial number is a bunch of 0's like this: 0000000000 or it's not even present hence wiped.
HERE IS THE MOST IMPORTANT PART FOR RECLAIMING YOUR MOBILE NETWORK CONNECTION, your IMEI is wiped and so you must restore it using your Efs backup file which i mentioned previously above. To do so you will need to root your device and the guaranteed way of rooting your device is using Chainfire's CF-Auto-Root Method.
Here are the links to the Odin flashable MD5 files based on your Note 4's Model Number that you must download ---> For SM-N910C: https://download.chainfire.eu/559/CF-Root/CF-Auto-Root/CF-Auto-Root-trelte-treltexx-smn910c.zip For SM-N910H: https://download.chainfire.eu/577/CF-Root/CF-Auto-Root/CF-Auto-Root-tre3g-tre3gxx-smn910h.zip For SM-N910U: https://download.chainfire.eu/557/CF-Root/CF-Auto-Root/CF-Auto-Root-trhplte-trhpltexx-smn910u.zip After downloading the file on to your computer simply load the file through Odin, power off your phone and boot it to download mode then connect your device to your computer and flash the md5 file. After it's done flashing your device will boot to a custom screen with a red android logo then it will boot.
Right now your device is rooted and you will see the Supersu app in your app drawer. Next if your Efs backup is stored on your computer and is of the format .tar simply open it with 7zip or Winrar you will find the .img present then extract it your desktop. In order to restore your IMEI with this .img file we will need an update package that we can flash from a custom recovery(CWM or TWRP). Here is the link to civato's awesome flashable update package: http://forum.xda-developers.com/showthread.php?t=2331853 and you'll find the package down in the attachment. After downloading the attached file, rename your Efs backup file from "efs.img" to "EFS.img" then extract the contents of the downloaded update package to a folder with the same name of the package, copy your EFS.img file to it and use 7zip or Winrar to add the files to an archive(.zip).
Last but not least copy the new repackaged flashable zip to your external or internal sd card. Run Odin and flash your desired Custom Recovery(CWM or TWRP). Boot to the custom recovery and flash the update package and finally reboot system. After booting your phone will have it's Efs partition restored; your IMEI and Samsung Serial number will be back and your mobile network will be back on again. :fingers-crossed:
Special thanks to FR34K-B1B0 for he's helpful post on getting back to stock firmware
And Many Many Thanks to civato for he's really useful Efs restoring update package! :victory:
And last but not least thank you Chainfire for your great CF-Auto-Root Method that helped root our device(s).

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