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Hey, I started flashing custom ROMs to my S4 (GT-i9506) about three months ago and everything was okay, but just recently I tried to return to my stock i9506 4.4.2 ROM and i succeeded in doing so, but afterwards I noticed that my S4 wasn't recognising my SIM.
At first I assumed it was a faulty SIM card (my SIM had multiple scratches on it), so I bought a new SIM card and yet the problem persisted. I tried to make calls and etc but my phone retuned an error stating, "Mobile network not available". I decided to check my settings and I noticed that my Baseband Version was labelled as "unkown".
After seeing this I searched for solutions online and came upon S4 service codes, I used the "*#06#" code and it returned a message saying "IMEI... null/null". Yet again I searched for a solution and came upon none to help me
I soon found out that my problem had something to do with the EFS parition in my phone. I re-rooted and installed ES File Explorer and opened up my EFS folder. In her everything looked ordinary, but then I noticed that my .nv_data file was missing, which, if i remember correctly, is responsible for important functions such as the IMEI and Baseband
I tried every solution I could find online and nothing fixed my issue - I'm only writing this as it's the only option which doesn't require me to go to my local Samsung Experience Store.
TL;DR
My GT-i9506 doesn't know its own IMEI and Baseband version and I'm all out of solutions at this point.
Am I better off going to the Samsung Store?
BUMP
More BUMP
Please help me
BUMP
IMEI no longer inhabits the EFS folder, so you're not missing anything. Flash the modem for your ROM again through Odin and see if that corrects the issue. If it does, use Wanam's EFS Backup to properly backup the hidden partitions where the IMEI is now stored.
Flash the latest stock lollipop rom for your device and you will be fine. Sounds to me you were on Lollipop stock and you downgraded to Kitkat.
Strephon Alkhalikoi said:
IMEI no longer inhabits the EFS folder, so you're not missing anything. Flash the modem for your ROM again through Odin and see if that corrects the issue. If it does, use Wanam's EFS Backup to properly backup the hidden partitions where the IMEI is now stored.
Click to expand...
Click to collapse
So then where is the IMEI stored? I'd just like to know for future purposes
The modem didn't fix it
Lennyz1988 said:
Flash the latest stock lollipop rom for your device and you will be fine. Sounds to me you were on Lollipop stock and you downgraded to Kitkat.
Click to expand...
Click to collapse
Tried this too, but failed also
I don't know which of the hidden partitions the IMEI is stored in. I only know where it's not, and that's not in the EFS folder. However, based on the partition names, the IMEI is likely stored in any or all of the following partitions: m9kefs1, m9kefs2, m9kefs3. While unlikely, it could also be stored in the following partitions: modemst1, modemst2.
Strephon Alkhalikoi said:
I don't know which of the hidden partitions the IMEI is stored in. I only know where it's not, and that's not in the EFS folder. However, based on the partition names, the IMEI is likely stored in any or all of the following partitions: m9kefs1, m9kefs2, m9kefs3. While unlikely, it could also be stored in the following partitions: modemst1, modemst2.
Click to expand...
Click to collapse
Would it be possible to mount any of those partitions?
jakeshekukanneh said:
Tried this too, but failed also
Click to expand...
Click to collapse
I need more info then this.
jakeshekukanneh said:
Would it be possible to mount any of those partitions?
Click to expand...
Click to collapse
You can try it, but I doubt you'll find anything human readable within them.
Lennyz1988 said:
I need more info then this.
Click to expand...
Click to collapse
I flashed the stock I9506XXDOA6 NEE ROM in Odin once more but my IMEI remained null.
So I decided to extract the modem.bin after installing the Lollipop ROM and it too didn't work
jakeshekukanneh said:
I flashed the stock I9506XXDOA6 NEE ROM in Odin once more but my IMEI remained null.
So I decided to extract the modem.bin after installing the Lollipop ROM and it too didn't work
Click to expand...
Click to collapse
Maybe I didn't elaborate enough....
Try This Maybe This Help!!
use samsung kies fimeware upgrade and instalition then it waant youre imei or s/n and its rightet under battry
Note: Do That in download Mode
I've already tried that multiple times though. Thanks for the suggestion however
Sent from my GT-I9506 using XDA Free mobile app
Strephon Alkhalikoi said:
I don't know which of the hidden partitions the IMEI is stored in. I only know where it's not, and that's not in the EFS folder. However, based on the partition names, the IMEI is likely stored in any or all of the following partitions: m9kefs1, m9kefs2, m9kefs3. While unlikely, it could also be stored in the following partitions: modemst1, modemst2.
Click to expand...
Click to collapse
Hi, I used to use Optimus G, it has IMEI in m9efs* and Modem in modem, modemst*. I never had IMEI problems but on S4 it is really scary. Will backing up EFS in TWRP, manually dd'ing EFS, modemst*, m9kefs* block10 make me stay on safe side?
Sent from my GT-I9505
Just use Wanam's EFS Backup tool. It backs up all those partitions, so no need to run commands in a terminal.
jakeshekukanneh said:
I've already tried that multiple times though. Thanks for the suggestion however
Sent from my GT-I9506 using XDA Free mobile app
Click to expand...
Click to collapse
There was a guy that claimed that his method fixed it for him:
https://www.youtube.com/watch?v=LgPEIeXDPNA
Lennyz1988 said:
There was a guy that claimed that his method fixed it for him:
https://www.youtube.com/watch?v=LgPEIeXDPNA
Click to expand...
Click to collapse
Hey, I've already tried that method prior to posting, unfortunately it didn't work. I might just go see the Samsung Experience Store tomorrow
i have galaxy s5 (SM-G900F) with no imei
the imeisv is 04
i didnt backup it or anything there is a way to restore it?
ben.anter said:
i have galaxy s5 (SM-G900F) with no imei
the imeisv is 04
i didnt backup it or anything there is a way to restore it?
Click to expand...
Click to collapse
Have you tried flashing stock with Odin?
Have you still got a radio signal (Make calls / text etc) ?
If not, you might have lost your EFS partition, which afaik, needs a professional repair to fix unless you backed up that partition first
RuffBuster said:
Have you tried flashing stock with Odin?
Click to expand...
Click to collapse
yep i have tried to update it with stock frimware but didnt help.
*Detection* said:
Have you still got a radio signal (Make calls / text etc) ?
If not, you might have lost your EFS partition, which afaik, needs a professional repair to fix unless you backed up that partition first
Click to expand...
Click to collapse
i have the signal bars working but no imei. no backup.
there is no other way to restore it somehow?
ben.anter said:
yep i have tried to update it with stock frimware but didnt help.
i have the signal bars working but no imei. no backup.
there is no other way to restore it somehow?
Click to expand...
Click to collapse
Before you try anything, I strongly advise you to backup your EFS partition or you could end up with no signal at all
IMEI and Radios are both contained in the EFS partition, lose that, your screwed
http://forum.xda-developers.com/showthread.php?t=2696153
*Detection* said:
Before you try anything, I strongly advise you to backup your EFS partition or you could end up with no signal at all
IMEI and Radios are both contained in the EFS partition, lose that, your screwed
http://forum.xda-developers.com/showthread.php?t=2696153
Click to expand...
Click to collapse
i have signal but when i try to make a call it says "not registered in the network"
and i have backup my efs partition to my sdcard as you said.
what now?
ben.anter said:
i have signal but when i try to make a call it says "not registered in the network"
and i have backup my efs partition to my sdcard as you said.
what now?
Click to expand...
Click to collapse
Might be too late if the EFS partition is corrupted and you don't have an IMEI and can't make calls
There are a couple of threads kicking about on XDA S5 forums where people have managed to recover their phones with similar problems, have a read through the Q&A forum and see if you can find them, some fixed by flashing stock, not sure how that worked, but apparently it did
Read others saying they backed up a working S5 EFS and restored it to the broken one
Have a read and see what you can find
*Detection* said:
Might be too late if the EFS partition is corrupted and you don't have an IMEI and can't make calls
There are a couple of threads kicking about on XDA S5 forums where people have managed to recover their phones with similar problems, have a read through the Q&A forum and see if you can find them, some fixed by flashing stock, not sure how that worked, but apparently it did
Read others saying they backed up a working S5 EFS and restored it to the broken one
Have a read and see what you can find
Click to expand...
Click to collapse
so you saying the only thing i can do is to flash a new imei with octoplus or some other kind of boxes.
and if i recover imei from other phone it will not cause network problem becuase there is two phones with the same imei ??
The law in most countries states that the only IMEI number you can use in your phone is the one it came with.....
Nobody here on XDA is going to give you advice on how to change your IMEI for that reason......it's against the law..... *and* as such, it's against XDA rules as well......
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
The law in most countries states that the only IMEI number you can use in your phone is the one it came with.....
Nobody here on XDA is going to give you advice on how to change your IMEI for that reason......it's against the law..... *and* as such, it's against XDA rules as well......
http://i.imgur.com/rVnFwJM.jpg
Click to expand...
Click to collapse
^^This.
Thread closed.
First, I have a Moto X style (XT1572) and it has the IMEI as 0! I need help on how to get it back, desperately, please help!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Well, it seems like I have "No service" on my phone, and it says that my IMEI number is 0, and my IMEI/SV is 01. I tried flashing stock rom onto this when it happened. I can't afford a new one and the only way I can keep this phone is if I can fix it - is there any way I can make an IMEI then find the folder to put this back into my phone? I have no backup, but I do have a folder called GSII_repair and it has 2 files, efs_save.tar and efs_save.tar.gz, but I'm not sure it is of any use. I just recognized the efs as the efs folder. I can't find where my IMEI is at the moment, either, so I don't know whether it is completely deleted or just corrupted. I also have a Moto G 3rd gen, I may be able to get an IMEI file from that, and then change the hexadecimals to fit my phone's original IMEI which is on my box. So please tell me, am I completely runined, and my phone is destroyed, or is there a chance that I can fix it? Thanks for any replies. Guys please help me though, I need it!
try reflashing the stock rom, then let me know if it worked. and, btw, its only been 6 minutes as ince you posted.
simms22 said:
try reflashing the stock rom, then let me know if it worked. and, btw, its only been 6 minutes as ince you posted.
Click to expand...
Click to collapse
Thanks so much for the quick reply, I have tried re flashing stock rom back onto my device, as well as attempting to flash many custom roms onto it, with no luck. It is currently rooted, so if I need to access any files I am able to. My dad'll kill me if he finds out, but I know alot about phones and can follow any instruction.
AlertRobotdude said:
Thanks so much for the quick reply, I have tried re flashing stock rom back onto my device, as well as attempting to flash many custom roms onto it, with no luck. It is currently rooted, so if I need to access any files I am able to. My dad'll kill me if he finds out, but I know alot about phones and can follow any instruction.
Click to expand...
Click to collapse
have you tried your sim card in another phone, or an other sim card in your phone?
simms22 said:
have you tried your sim card in another phone, or an other sim card in your phone?
Click to expand...
Click to collapse
Sim works fine in other phones. I accidently fastboot erase all to my phone. It's gone. I need to restore it. Halp D:
AlertRobotdude said:
Sim works fine in other phones. I accidently fastboot erase all to my phone. It's gone. I need to restore it. Halp D:
Click to expand...
Click to collapse
Do you have the box or a sticker or anything with your original IMEI number on it?
posts with bad IMEI are troubling, to say the least..
AlertRobotdude said:
First, I have a Moto X style (XT1572) and it has the IMEI as 0! I need help on how to get it back, desperately, please help!
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Well, it seems like I have "No service" on my phone, and it says that my IMEI number is 0, and my IMEI/SV is 01. I tried flashing stock rom onto this when it happened. I can't afford a new one and the only way I can keep this phone is if I can fix it - is there any way I can make an IMEI then find the folder to put this back into my phone? I have no backup, but I do have a folder called GSII_repair and it has 2 files, efs_save.tar and efs_save.tar.gz, but I'm not sure it is of any use. I just recognized the efs as the efs folder. I can't find where my IMEI is at the moment, either, so I don't know whether it is completely deleted or just corrupted. I also have a Moto G 3rd gen, I may be able to get an IMEI file from that, and then change the hexadecimals to fit my phone's original IMEI which is on my box. So please tell me, am I completely runined, and my phone is destroyed, or is there a chance that I can fix it? Thanks for any replies. Guys please help me though, I need it!
Click to expand...
Click to collapse
Have you Made an full backup in TWRP, with also an backup of EFS?
Sent from my XT1572 using XDA-Developers mobile app
ill recommend that go to moto service center nearby and tell them issue
they will charge but to bargain as much as u can... this is only choice left or else say byebye to moto x.... and u won't be able to enjoy new Android N also...
my personal suggestion...
go to moto service center....
AlertRobotdude said:
Sim works fine in other phones. I accidently fastboot erase all to my phone. It's gone. I need to restore it. Halp D:
Click to expand...
Click to collapse
`fastboot erase all` is the bane of Moto devices, once it has been done if you don't have a backup of the EFS partition to restore you are pretty much screwed and need to get it reflashed by Moto.
I know this might sound a bit weird, but can't he grab an efs partition from another pure with the efs zeroed out and then he can re edit with his imei?
IMEI
I do still have my IMEI on my box, I know what it is. Is anyone out there willing to help me by copying their efs partition and then setting the IMEI value to 0, so I can change it and then put it back into my phone? I don't know, but it might work.
Hello everybody,
What can I do if my Axon 7 has lost the IMEI by restoring a backup through TWRP? My baseband version is unrecognized.
I have tried to save on this thread the mobile phone, but the problem "IMEI Changer" does not recognize DIAG port.
Windows only shows:
Sry for my bad english. I use Google Translate.
I hate to say this, but you're out of luck. If you restored your EFS partition via a bad version of TWRP, you're stuck. Send it back to ZTE.
Controllerboy said:
I hate to say this, but you're out of luck. If you restored your EFS partition via a bad version of TWRP, you're stuck. Send it back to ZTE.
Click to expand...
Click to collapse
Damn and I was hoping through the program IMEI Changer could save the phone ...
I have the A2017G model and the bootloader has been unlocked. The device was bought at Amazon in Germany. Is it possible to send the device to the manufacturer because of the warranty?
logimowl said:
Damn and I was hoping through the program IMEI Changer could save the phone ...
I have the A2017G model and the bootloader has been unlocked. The device was bought at Amazon in Germany. Is it possible to send the device to the manufacturer because of the warranty?
Click to expand...
Click to collapse
I encountered the exact issue you told me. I restored a TWRP backup that I had made through a faulty TWRP version and it made me lose my IMEI and baseband. Tried just about anything. Nothing worked.
Restored everything to stock, reflashed stock recovery and locked bootloader and sent it back. Got a new one, only had to pay the shipping costs of my device to Germany. I hope you're as lucky as I have been. Thumbs up.
How can we make a backup of imei?
SilentEYE said:
How can we make a backup of imei?
Click to expand...
Click to collapse
Folks need to stop messing with the EFS partition. The only things you should be backing up with twrp is boot, system, and data. Nothing else.
Have you tried the zadig tool?
http://zadig.akeo.ie
Also, I've found this Qualcomm Driver to always work for me in the past. Surprising. It's the ONLY one that could help my device get detected by certain tools.
I uploaded it to my AFH for safekeeping: https://www.androidfilehost.com/?fid=817550096634746189
If you haven't tried any of this yet, just give it a whirl. I used the IMEI tool to rewrite my IMEI when I accidentally wiped it, and it was perfect.
My imei is shown as unknow i have a US phone but its working fine so i dont really pay much atention to it lol, but i will try the app kwesi posted to see if i can get it working
Google will not admit this but there were major security flaws in factory images before jan,2017.
Read for yourself below article.
Link: https://www.google.com/amp/www.tech...d-nexus-6-patch-fixes-modem-vulnerability.htm
They patched it in Jan. But effected users like us(who got effected on 2016) got proper fu***.
The result : NO SERVICE but detects sim card.
Kindly.....Plz....plz...plz....make a copy of your efs and provide it in this thread. Please also mention what factory image/build number u are using.
No one will give you his EFS backup because its unique for each phone..so you cant use someone else EFS on your phone...
scrin378 said:
No one will give you his EFS backup because its unique for each phone..so you cant use someone else EFS on your phone...
Click to expand...
Click to collapse
Hey,
Yes, you can use it... The.problem is: are you ok to give it to someone you don't know?
Cheers...
5.1 said:
Hey,
Yes, you can use it... The.problem is: are you ok to give it to someone you don't know?
Cheers...
Click to expand...
Click to collapse
Really?? Thats a big news for me its no problem do i know him or not.. How can you use someone else EFS/IMEI.. it would be 2 phones with same IMEI number..maybe it will work, but its like you use someone else ID card and present it like its yours..
scrin378 said:
Really?? Thats a big news for me its no problem do i know him or not.. How can you use someone else EFS/IMEI.. it would be 2 phones with same IMEI number..maybe it will work, but its like you use someone else ID card and present it like its yours..
Click to expand...
Click to collapse
Hey,
When the IMEI is corrupted on the software side, it still shows up using:
fastboot getvar all
So the IMEI is somehow corrupted on the EFS partition. How, I don't know. Seems like the EFS acts like a bridge between hardware/software. Of course, I could be wrong...
Some have tried but didn't succeed. Now, it's not the first time I see someone using another EFS backup and getting his IMEI back. I don't know why it would get "their"" original IMEI instead of the one included in the EFS backup either. But i guess they must all lie saying it fixed their device.
Cheers...
I have restored EFS using a backup from someone else's device EFS. It did not change my original imei.
parvezrobi said:
Google will not admit this but there were major security flaws in factory images before jan,2017.
Read for yourself below article.
Link: https://www.google.com/amp/www.tech...d-nexus-6-patch-fixes-modem-vulnerability.htm
They patched it in Jan. But effected users like us(who got effected on 2016) got proper fu***.
The result : NO SERVICE but detects sim card.
Kindly.....Plz....plz...plz....make a copy of your efs and provide it in this thread. Please also mention what factory image/build number u are using.
Click to expand...
Click to collapse
Still need an efs?
DEVILOPS 007 said:
Still need an efs?
Click to expand...
Click to collapse
Hi, I'm facing the same issue after 7.1.2 OTA no IMEI, baseband anymore, If you don't mind I would like to have it.
blckhwkone said:
Hi, I'm facing the same issue after 7.1.2 OTA no IMEI, baseband anymore, If you don't mind I would like to have it.
Click to expand...
Click to collapse
I'll share one soon for everyone here. I'm just a bit worried about security though as I don't know what happens and what data is stored in an efs backup.
blckhwkone said:
Hi, I'm facing the same issue after 7.1.2 OTA no IMEI, baseband anymore, If you don't mind I would like to have it.
Click to expand...
Click to collapse
Welcome to The tragic Club of network less Nexus 6P.. You are not alone here.
DEVILOPS 007 said:
I'll share one soon for everyone here. I'm just a bit worried about security though as I don't know what happens and what data is stored in an efs backup.
Click to expand...
Click to collapse
Down do it. The efs is device dependent. It will contain things like your imei. So even if restored on another device it will end up causing issues due to the same imei on different devices. It can also make it so things like WiFi don't work
zelendel said:
Down do it. The efs is device dependent. It will contain things like your imei. So even if restored on another device it will end up causing issues due to the same imei on different devices. It can also make it so things like WiFi don't work
Click to expand...
Click to collapse
Okay thank you, I had no clue about efs so I'll take your word on it.
Guys can anyone share efs so that I can restore and save my phone..I Have no signal ispitevof detection sim card...it shows no service.. But when I use jio it shows full signal..kindly help..
I had similar problem with my OnePlus X. Apparently I was saving and restoring my efs partion with every twrp backup which eventually caused it to become currupt. Thought my phone was toast until a friend on telegram suggested deleting modem1 and modem2 files with adb commands. Sounded more destructive then good but it actually worked sim was reading again and got full use of my phone. It's good to make backup of efs but only once. Not sure if this is the fix for every phone but works with OnePlus and Xiaomi.
How to Fix EFS from Bootloader Mode using Fastboot commands
Setup ADB and Fastboot on your PC.
Enable Developer options & USB debugging on your Android device.
Connect your device to the PC and open a command window on the PC.
Issue the following commands one by one:
adb reboot bootloader
fastboot erase modemst1
fastboot erase modemst2
fastboot reboot
Got my information from here
kach22 said:
I have restored EFS using a backup from someone else's device EFS. It did not change my original imei.
Click to expand...
Click to collapse
can send me plz your bakcup i need