Database Users

[GUIDE] How to restore EFS on I9300

It started when I was trying Swapper 2 from the Play Store. Will, I guess I should read the comment, but I didn't. And yes, it corrupted my EFS and my phone was stuck at the Samsung boot logo. I have tried many method I can search over XDA, but non works. (I'm not sure about this one, which I only find while writing this guide.)
This is by far the easiest method for me, and it doesn't involve Linux, which was a pain since I haven't use Linux in years. I had to VM one for some of the XDA method, which didn't work at end of the day.
1. Flash the firmware with ODIN (original firmware) with original version that you had before. Not the custom ROM, but the original firmware version.
2. Recover with EFS with the EFS image attached in the thread. I used kTool as it faster and easier than any other tool. (Yes, I tried them all...)
3. Download Chimera Tool and buy their cheapest license (or whatever you want) which is €12.90.
That it. Yes you pay, but it the easiest, and most time saving. I spent a week Googling, trying all this various method over ADB, and no, non works. And for Samsung to repair, which they refuse and simply want to change a board and charge me US$ 200 for it, I rather pay €12.90 and do it myself. If you still have problem connection to the network after restoring IMEI, please read post 3.

FAQ
If you need the ODIN, you can find theme over here. Myself I've always used version 3.07. And as always under options you only need the 'Auto Reboot' and 'F. Reset Time' checked. Whether it a modem or stock ROM, click on 'PDA' choose the correct file and than click on start.
Q: Won't flash the EFS image I provide means I'm getting your IMEI?
A: I've wondered this as well. If it were so simple, there wouldn't be so many thread on recovering and so may people cry for help... (I'm included). As my last resort before I buy Chimera Tool's license, I flashed over my bro's S3 EFS, which I didn't want to, as I said it was a last resort. And as it turned out, I didn't get his IMEI. Instead I got his phones' Update S3 product code and serial number. And that was it. IMEI has changed from my previous 'NULL' to the infamous generic 004999010640000.
Q: Why do I still need to do EFS recovery if Chimera Tool can restore it.
A: I've experiment this myself, as I also absolutely did not want my bro's EFS. But unfortunately Chimera can only restore the IMEI and serial number, not rest of the missing files in the EFS folder. If I repartition the EFS folder and using Chimera to restore my IMEI, it would show the correct IMEI but still refuse to connect to the network. And it will have the annoy overly showing my CSC and other bunch of info on my homescreen, as if my EFS is still corrupt.
Q: Does Chimera need some special box?
A: No, a normal USB cable will work. That pretty much means standard ADB command would work, but unfortunately I can't find any info on that. I wish I did, so I don't need to get the Chimera Tool but there was no other way for me. I was also sceptical at first, as I read over many forums and they say it impossible with some sort of service box/tool. I gambled, and luckily it worked out.
Q: Where does the EFS image go for kTool?
A: Sorry, don't remember. Google it, or use the backup option first than overwrite the EFS.IMG file. That what I did.
Q: Now that I got my IMEI back, how do I back it up?
A. Use kTool again? Personally I use TWRP, as I think it the easiest. Since you can do it at a recovery level. No trying of ODIN the OS for corrupt OS before restoring the EFS. In any case, Chimera would still be function for the next couple of month and you can still mess around until than.
Q: Why the need of ODIN the original firmware?
A: I was on a custom TW ROM and Chimera didn't work. Maybe CM and other custom ROM will will work, you can give it a try. But this is how I did it and I know it works.

EFS / Baseband(modem)
It easy to criticize a member and simply tell him use the 'search function', but without realize sometimes the article will help you the most, simply just doesn't come up. Murphy's law. I was on stock 4.1.2 and after restore IMEI and EFS, the phone indicate it register on the network, but I couldn't make calls or connect to the net. This is a vary good article regarding EFS, and sadly it didn't come up easily on my search result. I came across it after I fixed the issue with tones of Googling and was searching for a different topic. But I understand people that desperate need to solve the problem quick (like I was) simply spent hour reading over hundreds of post under that article is just testing a persons sanity. So I'm going to summarised some of the stuff along with my experience. First thing you need to know:
- EFS v2 Basebands (modem) was introduced at Android 4.3 and can read EFS partition v2 and EFS v1
- EFS v1 Basebands (modem) CANNOT read EFS v2, ONLY EFS v1
If you phone is still under warranty and cannot connect to network, the best way is to stay on stock firmware and use TriangleAway to reset the flash counter and sent back to Samsung. With your IMEI number correctly showing, Samsung has absolutely no excuse on not fixing it. If you are no longer warranty, read on.
Q: My IMEI is now showing correctly but I still cannot make calls!
A: This is where the Ariza Patch kicks in. If you are on stock fimware 4.1.2, you need the Ariza Patch to fix the baseband. But after long reading over plenty post, it seems once this patch has been done, it irreversible. So beware. Before you try this patch, you may want to try update to the stock 4.3 firmware and see if it solves the problem before applying the patch.
Q: I'm on stock 4.3, now what?
A: If you still have problem connecting to the network, you need a patched modem (baseband) file. You can find them here. I think this is from the original author who did it. Instead of searching over the forums and files scatter all over the place, I'm pretty sure I dug the link out of XDA while reading through. Someone please tell me if it isn't and provide the the proper link. I'll fix it.
Q: I was on stock 4.1.2 and went to a custom 4.3 ROM, what fix shall I apply?
A: This was my scenario. And I was kind of desperate as well since I just fix my IMEI and was expect the phone to work. I wish I could come across the article on top earlier. I would've tried stock 4.3 first instead of applying the Ariza patch. Any ways, I was on stock 4.1.2 and it didn't work, so I tried a modified 4.3 TW ROM. I wish the OP would mention the EFS thing, which he didn't. I'm not blaming him or anything, but seriously not everyone keep in track of what happening with Android. The OP should mention about the EFS thing or simply post a link such as the topic above and just let people know instead of wasting hours on figuring out why it wasn't working. What I did was, after using the mod 4.3 TW ROM, the IMEI went crazy. So I thought it was corrupt again, so I ODIN back the stock 4.1.2 TW. Than I applied the Ariza patch, wolla, I could call and browse again. So I decide to give the mod 4.3 TW ROM another try. To my surprise, the IMEI still went crazy. So after more Googling only I found out because I wasn't on stock 4.3, my baseband would still 4.1.x. I tried the modem (baseband) patch which for some reason still did not work for me. So I decide to keep the stock 4.1.2 baseband and simply use a custom kernel that could read EFS v1 and v2 - Boeffla Kernel. Remember to download the 4.3 kernel not the 4.1.x! That it, you should now have a working phone.

I just use SA manager .It will backup EFS & MODEM .store it in Ext SD .If EFS corrrrupted just install SA mgr back & restore .
Most important is backup and its very simple process

u need HKCtool to backup efs both img and tar files first of all.
if this is not possible u need a stock rom and odin .after installing stock rom the efs will be repaired.

nainaabd said:
I just use SA manager .It will backup EFS & MODEM .store it in Ext SD .If EFS corrrrupted just install SA mgr back & restore .
Most important is backup and its very simple process
Click to expand...
Click to collapse
Didn't try SA manager as I was in a rush and looking specifically for Samsung phones only. But it definately somehting I want to try if I get a Sony phone. Though I still prefer at a recover level. It just so simple.

keenimo said:
u need HKCtool to backup efs both img and tar files first of all.
if this is not possible u need a stock rom and odin .after installing stock rom the efs will be repaired.
Click to expand...
Click to collapse
TAR file is just a compressed version of IMG file.

im in nairobi kenya, unfortunately i can not buy the chimera tool because we dont have the necessary paying methods. anyone who can lend me theirs please? my S3 has the generic imei, repair would cost 15k here, which is too much. anybody that can help will be highly appreciated.

TNCS said:
It started when I was trying Swapper 2 from the Play Store. Will, I guess I should read the comment, but I didn't. And yes, it corrupted my EFS and my phone was stuck at the Samsung boot logo. I have tried many method I can search over XDA, but non works. (I'm not sure about this one, which I only find while writing this guide.)
This is by far the easiest method for me, and it doesn't involve Linux, which was a pain since I haven't use Linux in years. I had to VM one for some of the XDA method, which didn't work at end of the day.
1. Flash the firmware with ODIN (original firmware) with original version that you had before. Not the custom ROM, but the original firmware version.
2. Recover with EFS with the EFS image attached in the thread. I used kTool as it faster and easier than any other tool. (Yes, I tried them all...)
3. Download Chimera Tool and buy their cheapest license (or whatever you want) which is €12.90.
That it. Yes you pay, but it the easiest, and most time saving. I spent a week Googling, trying all this various method over ADB, and no, non works. And for Samsung to repair, which they refuse and simply want to change a board and charge me US$ 200 for it, I rather pay €12.90 and do it myself. If you still have problem connection to the network after restoring IMEI, please read post 3.
Click to expand...
Click to collapse
you can also downgrade to 4.0.4 and do flash i9300 efs.tar via odin 3.07 but first backup your EFS with helroz's app from here https://market.android.com/details?id=com.boiteoutilssgshelroz&feature=search_result or use any other efs backup maker
But YOU NEVER NEED TO RESTORE EFS after a flash or whenever, just in case you have an issue with it.
if u have 0049xxxx or 00xxxx imei just flash I9300XXUNA7 or any latest android 4.3 and that's it you have your unknown baseband and null imei fixed aka efs corrupt issue.
Warning!!!!
i am not responsible if you get any damage to your device as per my experience i have fixed many i9300's efs and didn't get any problem .
Good luck!
(CHANGE THE ATTACHED FILE'S EXTENSION TO .md5)

Xubair91 said:
you can also downgrade to 4.0.4 and do flash i9300 efs.tar via odin 3.07 but first backup your EFS with helroz's app from here https://market.android.com/details?id=com.boiteoutilssgshelroz&feature=search_result or use any other efs backup maker
But YOU NEVER NEED TO RESTORE EFS after a flash or whenever, just in case you have an issue with it.
if u have 0049xxxx or 00xxxx imei just flash I9300XXUNA7 or any latest android 4.3 and that's it you have your unknown baseband and null imei fixed aka efs corrupt issue.
Warning!!!!
i am not responsible if you get any damage to your device as per my experience i have fixed many i9300's efs and didn't get any problem .
Good luck!
(CHANGE THE ATTACHED FILE'S EXTENSION TO .md5)
Click to expand...
Click to collapse
From what I understand, that still under the condition of prior having an EFS back-up first, right? My guide is for people who doesn't. Like in my situation, where the app screwed up the EFS partition and I had no back-ups.
If you really want in details - Swapper 2 moved the EFS partation on to my ext SD card and format the EFS partition. I was in a flat panic with the soft-brick froze at the Samsung boot logo, assume the SWAP was on the ext SD and screwed it up than format the ext SD. Well, boom, without expectation the app would do something like that and had no prior experience with EFS - no back-ups of EFS at all. And no, full nandroid back-up from CWM does not contain EFS, I've tried that. This isn't some normal scenario of incompatibility between kernel/ROM and EFS/Modem. This is recovery guild for corruption of EFS with NO back-ups.

trying ....

mezo_mmm said:
trying ....
Click to expand...
Click to collapse
And how did it go? The suspense it killing me .

[ Q ] efs folder fix

Hello. I was wondering if anyone knows how or could point me in the direction on how to fix my efs folder. It seems like it is only half corrupted. I can still dial #*06# and can still get my imei number but every reboot put me in safe mode and some of my apps don't work. I have root explore and I go into efs folder and nothing is there. It almost seems like I have a semi root. I am currently rooted and on a custom ROM. If anyone could help that would be great. Thanks and have a great holiday.

Taiweanthony said:
Hello. I was wondering if anyone knows how or could point me in the direction on how to fix my efs folder. It seems like it is only half corrupted. I can still dial #*06# and can still get my imei number but every reboot put me in safe mode and some of my apps don't work. I have root explore and I go into efs folder and nothing is there. It almost seems like I have a semi root. I am currently rooted and on a custom ROM. If anyone could help that would be great. Thanks and have a great holiday.
Click to expand...
Click to collapse
Reflashing the stock firmware for your CSC may help.

Thanks for your help. I will try it out.

efs
I flashed the stock firmware to csc and I still have the same problem. Anything else I could do?

EFS restore
Heeeeelp
I have no net, no wi-fi, no mobilnet. I wanted to restore EFS image file but it says I have to buy mannyvinny efs backup tool pro version. But without net it failed
I need help, how to restore img files in other way
Thanks for any help:crying:

Taiweanthony said:
I flashed the stock firmware to csc and I still have the same problem. Anything else I could do?
Click to expand...
Click to collapse
Try this post.

[Q] Galaxy Note 3 (IMEI Lost) Need help

Hey Guys!
Firstly, I know this same thread has been made for other devices. Most of which have solutions, but these do not work for me. I really need your help with my problem!
The Problem: My GN3 has lost its IMEI, the EFS folder might have gotten corrupt somehow. But by a stroke of bad luck, the IMEI turned to unknown and no methods seem to solve this.
Thus far I have tried changing the IMEI with NV Tools and EFS Pro. None of which work, I tried generating a new file and flashing it on, that did also not help.
It was stock 4.4.2 Samsung, rooted. We sent it in to a service center, but since Knox now says 0x1 they want to charge us R3500 (~$300) to repair it.
Upon inspection, I noticed from my EFS folder that all files starting with 'nv' was gone. SO I copied these from my rooted Note 2 and placed them in the folder. Idea being that I could just change the IMEI using NV Tools, as it didn't work otherwise. This however did not work.
The only sollution I can think of, would be for someone to make a backup (using TWRP or CWM) of their EFS folder, then for me to restore it and then change the IMEI with NV Tools.
I promise I did not steal this phone, and it is not blacklisted or anything. Ill send any who might help me a picture of the IMEI on the back of the phone + the original box and the receipt if they doubt me.
I DON'T WANT YOUR IMEI NUMBER, but I need a full Note 3 EFS folder with the original files, so I can attempt to fix mine.
If anyone has a different solution I'm all ears, and up for anything.

cant u just flash stock in odin.

masze said:
cant u just flash stock in odin.
Click to expand...
Click to collapse
I have done that, all it has done is increase the flash counter from 1 to 2. And remove my root. The EFS is broken (somehow) and I can't figure out how to fix it....

Odin upload the latest version of the modem

Hitman7987 said:
Hey Guys!
Firstly, I know this same thread has been made for other devices. Most of which have solutions, but these do not work for me. I really need your help with my problem!
The Problem: My GN3 has lost its IMEI, the EFS folder might have gotten corrupt somehow. But by a stroke of bad luck, the IMEI turned to unknown and no methods seem to solve this.
Thus far I have tried changing the IMEI with NV Tools and EFS Pro. None of which work, I tried generating a new file and flashing it on, that did also not help.
It was stock 4.4.2 Samsung, rooted. We sent it in to a service center, but since Knox now says 0x1 they want to charge us R3500 (~$300) to repair it.
Upon inspection, I noticed from my EFS folder that all files starting with 'nv' was gone. SO I copied these from my rooted Note 2 and placed them in the folder. Idea being that I could just change the IMEI using NV Tools, as it didn't work otherwise. This however did not work.
The only sollution I can think of, would be for someone to make a backup (using TWRP or CWM) of their EFS folder, then for me to restore it and then change the IMEI with NV Tools.
I promise I did not steal this phone, and it is not blacklisted or anything. Ill send any who might help me a picture of the IMEI on the back of the phone + the original box and the receipt if they doubt me.
I DON'T WANT YOUR IMEI NUMBER, but I need a full Note 3 EFS folder with the original files, so I can attempt to fix mine.
If anyone has a different solution I'm all ears, and up for anything.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2985624

Rosli59564 said:
http://forum.xda-developers.com/showthread.php?t=2985624
Click to expand...
Click to collapse
Ok, what I found out as a solution was to delete EFS folder. Android will rebuild it! BUT: My EFS and Baseband are still gone. I reflashed stock (again) using Odin. No Dice. My NV_DATA, NV_CORE ect files are gone!
And IMEI isnt coming back.
If anyone has a spare EFS backup, or a script or something that i can flash to make my device have those files again I would appreciate it very much.

Hitman7987 said:
Ok, what I found out as a solution was to delete EFS folder. Android will rebuild it! BUT: My EFS and Baseband are still gone. I reflashed stock (again) using Odin. No Dice. My NV_DATA, NV_CORE ect files are gone!
And IMEI isnt coming back.
If anyone has a spare EFS backup, or a script or something that i can flash to make my device have those files again I would appreciate it very much.
Click to expand...
Click to collapse
Check your inbox
---------- Post added at 03:17 AM ---------- Previous post was at 02:31 AM ----------
Hitman7987 said:
Ok, what I found out as a solution was to delete EFS folder. Android will rebuild it! BUT: My EFS and Baseband are still gone. I reflashed stock (again) using Odin. No Dice. My NV_DATA, NV_CORE ect files are gone!
And IMEI isnt coming back.
If anyone has a spare EFS backup, or a script or something that i can flash to make my device have those files again I would appreciate it very much.
Click to expand...
Click to collapse
The following might be uotdated but no harm to try anyway(Can't copy the link so i copied everything)
1. Install Stock firmware via Odin, then re-run auto-root (to regain root of course)*
2. Install TWRP 2.6.3.2 via odin, reboot to recovery.
3. Do an "adb shell" when phone is in recovery mode to run commands via TWRP.
From the ADB shell: Wiped the EFS partition with the following command:
mke2fs /dev/block/mmcblk0p12*
mkdir /efs
mount -t ext4 /dev/block/mmcblk0p12 /efs
(the last two commands probably did nothing, but thats what I did anyway)
Do a factory reset, reboot system

Rosli59564 said:
Check your inbox
---------- Post added at 03:17 AM ---------- Previous post was at 02:31 AM ----------
The following might be uotdated but no harm to try anyway(Can't copy the link so i copied everything)
1. Install Stock firmware via Odin, then re-run auto-root (to regain root of course)*
2. Install TWRP 2.6.3.2 via odin, reboot to recovery.
3. Do an "adb shell" when phone is in recovery mode to run commands via TWRP.
From the ADB shell: Wiped the EFS partition with the following command:
mke2fs /dev/block/mmcblk0p12*
mkdir /efs
mount -t ext4 /dev/block/mmcblk0p12 /efs
(the last two commands probably did nothing, but thats what I did anyway)
Do a factory reset, reboot system
Click to expand...
Click to collapse
Ok I did that, and after a fresh setup. I still have the same issues. LOOOOOONG Reboot, and finally nothing. IMEI still gone. SIM Card not present even though it is in. Other ideas?

Hitman7987 said:
Ok I did that, and after a fresh setup. I still have the same issues. LOOOOOONG Reboot, and finally nothing. IMEI still gone. SIM Card not present even though it is in. Other ideas?
Click to expand...
Click to collapse
DUDDEEEEEEEE!!!!!
NO WAIT, IT WORKED!!!
THANK YOU VERY MUCH!!!!, everyone who reads this, plz thank user Rosli59564.
Rosli, I dont know where you got that info, plz post here so ppl can go thank that person. BUT IT WORKED, so thank you veyr much. You gave me back my FAVORITE PHONE ever!

Hitman7987 said:
DUDDEEEEEEEE!!!!!
NO WAIT, IT WORKED!!!
THANK YOU VERY MUCH!!!!, everyone who reads this, plz thank user Rosli59564.
Rosli, I dont know where you got that info, plz post here so ppl can go thank that person. BUT IT WORKED, so thank you veyr much. You gave me back my FAVORITE PHONE ever!
Click to expand...
Click to collapse
Huh just learnt how to repost a post. It's here:
http://forum.xda-developers.com/showthread.php?p=46436273
Glad you sort it out[emoji106]

Do an "adb shell"?
Hitman7987 said:
DUDDEEEEEEEE!!!!!
NO WAIT, IT WORKED!!!
THANK YOU VERY MUCH!!!!, everyone who reads this, plz thank user Rosli59564.
Rosli, I dont know where you got that info, plz post here so ppl can go thank that person. BUT IT WORKED, so thank you veyr much. You gave me back my FAVORITE PHONE ever!
Click to expand...
Click to collapse
Sorry @Hitman7987 but I'm new here but had the exact same problem you did.
I do not really understand the solution Rosli gave though. Could you help me out: point me to a post or explain here
What is an "adb shell" and how does one "do it"?
Thanks

tobyChidolue said:
Sorry @Hitman7987 but I'm new here but had the exact same problem you did.
I do not really understand the solution Rosli gave though. Could you help me out: point me to a post or explain here
What is an "adb shell" and how does one "do it"?
Thanks
Click to expand...
Click to collapse
I honestly can't remember, I think I just flashed TWRP and wiped the partitions he said to wipe. Then did the reboot.
Sorry for my lack of help, but I really can't remember the exact steps.

tobyChidolue said:
Sorry @Hitman7987 but I'm new here but had the exact same problem you did.
I do not really understand the solution Rosli gave though. Could you help me out: point me to a post or explain here
What is an "adb shell" and how does one "do it"?
Thanks
Click to expand...
Click to collapse
To flash a firmware or custom recovery:
http://forum.xda-developers.com/showthread.php?t=2704363
The rest are quite straight forward

Unknown BaseBand And imei null

here i received a g900h from a customer with unknown baseband and imei null after wipe.
i flashed device and upgrade it to 5.0.2 but still has problem .
please F1.
thnx

Unless they backed up their EFS partition, it's dead
Heard people saying they backed up a different S5 EFS partition, then restore it on the dead S5
http://forum.xda-developers.com/showthread.php?t=2737448

please F1
i confused , please someone help me.
here i have a g900h with unknown baseband and null imei .
i upgrade it to 5.0.2 then downgrade it again to 4.4.2.
but still is damaged baseband and imei.
device is now rooted and i installed busybox and terminal emulator for restore a efs.
please
please
help
i google every day , today i found a solution in z3x forum but no one was shared it was solved or not.

Enter debugging mode on your Samsung galaxy
>Connect your Device to the PC
>Download the EFS Restorer Express
>Open The folder and double-click the EFS-BACKUP. BAT file
>On the screen provided, select a method to restore the EFS via ODIN
>Finish
i need a good efs backup for g900h
please back up and share

miladcpu said:
Enter debugging mode on your Samsung galaxy
>Connect your Device to the PC
>Download the EFS Restorer Express
>Open The folder and double-click the EFS-BACKUP. BAT file
>On the screen provided, select a method to restore the EFS via ODIN
>Finish
i need a good efs backup for g900h
please back up and share
Click to expand...
Click to collapse
Noone with any sense will share their EFS backup, it is unique to their phone, and sharing it could get their phone blocked by the carrier

*Detection* said:
Noone with any sense will share their EFS backup, it is unique to their phone, and sharing it could get their phone blocked by the carrier
Click to expand...
Click to collapse
i'm in iran so don't worry about your carrier.

miladcpu said:
i'm in iran so don't worry about your carrier.
Click to expand...
Click to collapse
Don't care where you are, if your phone has my IMEI, and your phone gets blocked for whatever reason, mine does too
Read EFS threads, do you see anyone sharing their EFS partition?
Nope. And that's why
Would you give me your MAC address and IP address so I can download illegal files?
I don't want anyone else having my specific phone ID

*Detection* said:
Don't care where you are, if your phone has my IMEI, and your phone gets blocked for whatever reason, mine does too
Read EFS threads, do you see anyone sharing their EFS partition?
Nope. And that's why
Would you give me your MAC address and IP address so I can download illegal files?
I don't want anyone else having my specific phone ID
Click to expand...
Click to collapse
first i have to thanks to you for your replies and kindly help.
so what should i do now?

miladcpu said:
first i have to thanks to you for your replies and kindly help.
so what should i do now?
Click to expand...
Click to collapse
Either find another S5 to backup and restore from, a trusting friend or family member - or take your phone to a store to get fixed
Then backup your EFS partition

EFS missing files / IMEI and Baseband unknown

Hello guys, I need a lot of help was messing on the Internet from my Galaxy S5 G900M when he crashed and got warm,
I removed the battery called him but was no carrier signal after prsquisar discovered that my EFS is missing files:
.nv_core. bin
.nv_core.md5
.nv_data.bin
.nv_data.md5
.nv_state
I have little money when then pay for repairs to the box is in final plan at the time,
I researched many posts with repair attempts here Forums new and others over the Internet to 3 full days without success, what do you think is like me rebuild these 5 files on my device?
vi whose other older models (Galaxy S4) with a program, only it does not support my model!
Obs:
My S5 was before the problem with the Rom xXx No Limits 5.7 + Boeffla kernel + Root
I've tried to go back to several versions of the stock roms and did not work!
Thank you guys

I also have the same problem with my G900M
It would be very good for someone we help.
My friend, any progress tell me.

i dont want to bother or anythin, but for u to recover the efs file is more or less impossible.... the only way would be if u would have made a efs partition backup trough twrp, since i bet u didnt made one, ur phone is now more or less just a tablet with no usable phone stuff

Hope this helps! Best of luck
https://www.technobezz.com/restore-galaxy-null-imei-and-fix-not-registered-on-network/

[email protected] said:
I also have the same problem with my G900M
It would be very good for someone we help.
My friend, any progress tell me.
Click to expand...
Click to collapse
Yes I will
ekonomc said:
i dont want to bother or anythin, but for u to recover the efs file is more or less impossible.... the only way would be if u would have made a efs partition backup trough twrp, since i bet u didnt made one, ur phone is now more or less just a tablet with no usable phone stuff
Click to expand...
Click to collapse
It is worth trying, since the discovery could help more people around the world
[email protected] said:
https://www.technobezz.com/restore-galaxy-null-imei-and-fix-not-registered-on-network/
Click to expand...
Click to collapse
Thank I already tried it before the codes *#197328640# or *#*#197328640#*#* they do not work on my device

EFS without ''nv_data.bin'' isn't corupt
LMartins.338 said:
Hello guys, I need a lot of help was messing on the Internet from my Galaxy S5 G900M when he crashed and got warm,
I removed the battery called him but was no carrier signal after prsquisar discovered that my EFS is missing files:
.nv_core. bin
.nv_core.md5
.nv_data.bin
.nv_data.md5
.nv_state
Click to expand...
Click to collapse
I have SM-G900F and in efs partition I don't have this files above too, but i have IMEI in phone and it works good. I think the Galaxy S5 have a special version of efs partition. I can send you my dump of efs part. (efs.bin file, maked by dd in adb in console on PC ) if you want. You can send me your dump of efs to compare this. It is surprise for me why I dont have the folder "sec_efs" like you.
Image of my EFS in SM-G900F: https:__drive.google.com/file/d/1PPr2yaZPsOc4kPJmPebpIGJeL6Jxa03X/view?usp=sharing
And look what I found on the web: http:__i.imgur.com/AF2MikD.png

Hi there. I tries to restore my efs backup after flashing stock ROM,but didn't knew the backup itself was corrupt and my phone has no network, no imei and unknown baseband.