Hi,
I've been having problems with my 4 month old GS4 lately, mainly because I was not able to make or receive calls and texts. I looked up my problem, and eventually traced it down to a unknown baseband and IMEI problem. Sure enough, my baseband and IMEI was missing. I researched and found out that you need to backup your EFS folder as it may have been corrupted, unfortunately I was not able to do so. I even tried factory resetting my phone to stock TouchWiz, hearing reports that a hard reset can fix the problem; unfortunately, I'm still missing my IMEI and Baseband. All help is appreciated
This Phone was/is rooted, and has been flashed several times with custom ROMS.
Thank you in advance.
If the problem started without you flashing or doing anything else, then you have a hardware failure. Your emmc chip is probably broken. Bring it to a service center.
Lennyz1988 said:
If the problem started without you flashing or doing anything else, then you have a hardware failure. Your emmc chip is probably broken. Bring it to a service center.
Click to expand...
Click to collapse
I'm not so sure really. I flashed Cyanogenmod and it was working fine, I could make and receive calls. However, my SIM card died and I had to replace it. That was when I noticed the problem.
EDIT: Okay, I failed to read completely. I kept reflashing nandroid backups however, after experiencing problems unrelated to this.
HeadhuntrActual said:
I'm not so sure really. I flashed Cyanogenmod and it was working fine, I could make and receive calls. However, my SIM card died and I had to replace it. That was when I noticed the problem.
EDIT: Okay, I failed to read completely. I kept reflashing nandroid backups however, after experiencing problems unrelated to this.
Click to expand...
Click to collapse
Try using root explorer and see if your efs folder is ok?
Old_Geezer said:
Try using root explorer and see if your efs folder is ok?
Click to expand...
Click to collapse
How do I know if it is okay??? P.S. I can't find certain files like nv_data.bin... sign of corruption?
HeadhuntrActual said:
How do I know if it is okay??? P.S. I can't find certain files like nv_data.bin... sign of corruption?
Click to expand...
Click to collapse
It might be, since my efs folder have nv_data.bin but i can't tell for sure since i'm still a newbie here.
Did you try searching for efs backup on the phone? I know some roms do automatic backup after flash so it might be left there somewhere.
HeadhuntrActual said:
I'm not so sure really. I flashed Cyanogenmod and it was working fine, I could make and receive calls. However, my SIM card died and I had to replace it. That was when I noticed the problem.
EDIT: Okay, I failed to read completely. I kept reflashing nandroid backups however, after experiencing problems unrelated to this.
Click to expand...
Click to collapse
I don't understand what you are saying.
When did your problem start? Did you do anything or did it happen without you doing anything.
Old_Geezer said:
It might be, since my efs folder have nv_data.bin but i can't tell for sure since i'm still a newbie here.
Did you try searching for efs backup on the phone? I know some roms do automatic backup after flash so it might be left there somewhere.
Click to expand...
Click to collapse
I tried, there was none unfortunately, I also flashed back to stock twice. If there was, it was probably wiped.
Lennyz1988 said:
I don't understand what you are saying.
When did your problem start? Did you do anything or did it happen without you doing anything.
Click to expand...
Click to collapse
I can't say for sure. My IMEI and Baseband was visible when I was running CM11. My SIM died eventually, so I had 0 service after that for about a week. During this time, I flashed AntaresOne's Unofficial cm12 5.0. Maybe it was corrupted when I flashed it? Anyway, My efs folder appears to be missing files aswell. I can't seem to find nv_data.bin perhaps my efs folder really is corrupted?
Related
hi guys, i really messed up this time, for some reason i lost my efs backup, and for some reason i flashed an XXDMG based rom, and i got the fake imei error, so i done some research and flashed the new modem that solved the issue, once that happened i also backed my efs up which i have sitting on my desktop in .img form.
So i went on 2 flash a 4.3 rom and all i was getting was errors,so i odined a stock rom XXALJ2, and ive just been getting this factory error, id love to restore the efs but the damn /efs wont mount, and i always get an error along the lines of write error or something, in the frustation of the moment i done a stock odin (xxalj2) and ticked phone efs clear, and still, nothing is happening - its the same old error - the efs didnt even clear.
So now i have a phone in factory mode, with no signals and i honestly have no clue what to do next,.
Any help will be much appreciated.
hamzahqaisar said:
hi guys, i really messed up this time, for some reason i lost my efs backup, and for some reason i flashed an XXDMG based rom, and i got the fake imei error, so i done some research and flashed the new modem that solved the issue, once that happened i also backed my efs up which i have sitting on my desktop in .img form.
So i went on 2 flash a 4.3 rom and all i was getting was errors,so i odined a stock rom XXALJ2, and ive just been getting this factory error, id love to restore the efs but the damn /efs wont mount, and i always get an error along the lines of write error or something, in the frustation of the moment i done a stock odin (xxalj2) and ticked phone efs clear, and still, nothing is happening - its the same old error - the efs didnt even clear.
So now i have a phone in factory mode, with no signals and i honestly have no clue what to do next,.
Any help will be much appreciated.
Click to expand...
Click to collapse
If you can boot into Android I would try
http://forum.xda-developers.com/showthread.php?t=1264021
YellowGTO said:
If you can boot into Android I would try
http://forum.xda-developers.com/showthread.php?t=1264021
Click to expand...
Click to collapse
thanks, will try that.
hamzahqaisar said:
thanks, will try that.
Click to expand...
Click to collapse
no luck, that did not work thanks for suggesting that
upon trying to terminal the efs backup into place i get the write error, its killing me
I got this message after updating to android 4.4.4.
What could be causing this?
term44 said:
I got this message after updating to android 4.4.4.
What could be causing this?
Click to expand...
Click to collapse
Hi check your IMEI see if it is correct...
Could be the wrong modem or a bad EFS do you have an EFS folder back up
MAX 404 said:
Hi check your IMEI see if it is correct...
Could be the wrong modem or a bad EFS do you have an EFS folder back up
Click to expand...
Click to collapse
Checked the IMEI, it is ok.
term44 said:
Checked the IMEI, it is ok.
Click to expand...
Click to collapse
If is not hardware, chances are that the efs folder is corrupted.
Try a different kernel
Try a different modem
Flash full wipe custom rom again..
Last flash stock rom...
If all fails the problem most like it is in the efs folder, if you have a backup restore it
MAX 404 said:
If is not hardware, chances are that the efs folder is corrupted.
Try a different kernel
Try a different modem
Flash full wipe custom rom again..
Last flash stock rom...
If all fails the problem most like it is in the efs folder, if you have a backup restore it
Click to expand...
Click to collapse
would try that all, but the phone refuses to connect to pc now, so i can not transfer the files... any suggestions?
it says that device driver did not install properly. i have installed kies in order to push drivers to my pc, but still same.
term44 said:
would try that all, but the phone refuses to connect to pc now, so i can not transfer the files... any suggestions?
it says that device driver did not install properly. i have installed kies in order to push drivers to my pc, but still same.
Click to expand...
Click to collapse
De install drivers and install them again , try another usb port , make sure kies is not activated
MAX 404 said:
De install drivers and install them again , try another usb port , make sure kies is not activated
Click to expand...
Click to collapse
just done that and still cant connect. however odin detects the phone, which is good :=) so i will install stock rom.
hopefully that will solve the problem with the sim card..
term44 said:
just done that and still cant connect. however odin detects the phone, which is good :=) so i will install stock rom.
hopefully that will solve the problem with the sim card..
Click to expand...
Click to collapse
restoring to stock rom solved the problem
term44 said:
restoring to stock rom solved the problem
Click to expand...
Click to collapse
Glad is working mate
Back up before you do anything else do not forget to backup the efs folder
Sent from my Nexus 7 using XDA Premium 4 mobile app
same issue.
I have the same issue as described by the op.
I flashed back to official 4.4.2 and the problem persist.
IMEI number is correct.
IMEISV is 01
Ive been trying to fix this for over a week to no avail. Losing my mind. Is there anything else you can suggest to fix this issue?
Phone is an i9500.
Was really hoping for some help by now. This will be the second time ive posted to this site in the 2 years ive been here with zero responses.
As a side note. I wanted to add that at the same time i started having the "not registered on network" error my sd card stopped being read by the phone also. I replaced the sim/sd holder in the phone itself hoping this would fix both issues but it has obviously not. Still not reading the sd. Says its blank or unrecognized file system. When i try to format it it doesn nothing. This is the sd I had in the phone before having issues. It worked fine then.
The phone just suddenly stopped working one morning. I used it to send a couple text and make a call, next time i picked it up "not registered" issue began. No changes to the phone in between those times.
I figured I would add this info in hopes of gaining a response.
Thanks.
Hey guys,
So I am a beginner here, had no idea what I was doing and somehow I ended up messing up/bricking my S4. Long story short, after several days of messing around with it, I was finally able to take firmware through ODIN back to stock.
The issue is: The phone still does not recognize my sim card, when I check baseband it says Unknown, and IMEI is Null/Null. After further research, it seems that this has something to do with EFS. Unfortunately, I did not back up any such files since I have no real idea what I am doing.
Can anyone help me out with this? Galaxy S4- SGH-I337, NB1.
I just need the most simple fix to get phone working again.
Thanks.
Get a s4 from a friend and make a back up of the EFS. That's how I have heard people make it work
Maybe this can help you.
churapa said:
Maybe this can help you.
Click to expand...
Click to collapse
The only issue with that is they want me to back up and restore the EFS. I did not back up my EFS initially so I feel it is too late for that.
moiramd said:
Get a s4 from a friend and make a back up of the EFS. That's how I have heard people make it work
Click to expand...
Click to collapse
This may be hard, But if I did find an EFS for I337 online.. How would I go about putting this on my phone?
With EFS restorer Express
I thought each phone's efs were unique to that phone?
Airtioteclint said:
I thought each phone's efs were unique to that phone?
Click to expand...
Click to collapse
Yea thats what I thought, Which is why im confused.
tigerx88 said:
Yea thats what I thought, Which is why im confused.
Click to expand...
Click to collapse
Did you ever make a nandroid backup at all? I know twrp backs up the efs hopefully you have that somewhere.
There is an app in the playstore that will give you your efs info using other info. It's called meid converter. Good luck.
Airtioteclint said:
Did you ever make a nandroid backup at all? I know twrp backs up the efs hopefully you have that somewhere.
There is an app in the playstore that will give you your efs info using other info. It's called meid converter. Good luck.
Click to expand...
Click to collapse
Unfortunately, I dont think I backed up anything... not that I know of anyway.
What can I do with this app? Am I able to restore the baseband and IMEI?
tigerx88 said:
Unfortunately, I dont think I backed up anything... not that I know of anyway.
What can I do with this app? Am I able to restore the baseband and IMEI?
Click to expand...
Click to collapse
It will tell you your imei, and other info that you might be missing. From there you will have to try and figure out a way to reinput them manually. There was an app called anycut that worked great for things like this back in the gingerbread days. I'm sure there are ways to do it in terminal emulater now hopefully a more knowledgeable user can help out with that part.
Still cant figure out what I should do here. Any further ideas?
I have tried changing the firmware via Odin several times, and I am still having the same issue! Can someone please instruct on how to get the baseband and IMEI back if it was never backed up in the first place.
Thanks!!
tigerx88 said:
I have tried changing the firmware via Odin several times, and I am still having the same issue! Can someone please instruct on how to get the baseband and IMEI back if it was never backed up in the first place.
Thanks!!
Click to expand...
Click to collapse
Last bump before I give up on this
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.
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