Database Info

[Q] Wiped /efs folder

Hello,
Before I go to the Car Phone Warehouse and look stupid, does anyone know if my nexus s is capable of rebuilding the correct nv files and anything else it needs to work properly?
The original IMEI folder is still present. Of course the IMEI number is printed inside the phone.
It does replace some files if I remove them. It's not helping, and I get a default IMEI number.

Without your backup, the IMEI can't be restored.

brainmaster said:
Without your backup, the IMEI can't be restored.
Click to expand...
Click to collapse
Thanks again brainmaster. Your MIUI is excellent btw.
Sending my phone off (no warranty obviously...) lets see what can be done.

brainmaster said:
Without your backup, the IMEI can't be restored.
Click to expand...
Click to collapse
Hi,
How do I go about getting the /efs backed up and restored in case of trouble?
I've read around that nandroid backups don't store /efs.
Thanks.

Gehrschrein said:
Hi,
How do I go about getting the /efs backed up and restored in case of trouble?
I've read around that nandroid backups don't store /efs.
Thanks.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1225560
[DEV] EFS Autobackup script for ROM Developers & Users by brainmaster
Sent from my -=Nexus MV=- powered Nexus S c",)

Thank you.

I love this thread.

Just to update, got it back and regenersis in Glasgow had been able to fix it.
Sent from my Nexus, fool

[Q] Where is nv_data.bin in Skyrocket

My IMEI number got changed and also WIFI and Bluetooth address are missing... how do the i fix

SR doesn't have nv_data.bin. Search for 'corrupt efs', there is a thread with the solution.

Try ODIN back to stock. Trying to unlock your phone did you?

http://www.en.lmgtfy.com/?q=corrupt+efs
Pick the first link

xcrazydx said:
http://www.en.lmgtfy.com/?q=corrupt+efs
Pick the first link
Click to expand...
Click to collapse
Nice, I need to use that more often!

ah, i tried all that option of restoring EFS... no luck.... my IMEI number is still unchanged... WIFI / Bluetooth not working.... Serial number of phone shown as 00000000
it does work and i can make calls/receive... is it possible to restore it from another skyrocket or modify any files

Try:
Dial:
*#197328640#
In service mode menu select:
[6] Common
[6] NV Rebuild
If the bottom of screen says:
Golden-backup exist
You can Restore Cal/NV
Then you can try:
[4] Restore Cal/NV
Then reboot.
DO NOT USE MENU ITEMS 1, 2, or 5 - These will wipe the hidden efs1, efs2, or efs backup partitions.!!!
Proceed at your own risk.

I tried using below option... still IMEI number not changed ...Serial number still showing 0000000
*#197328640#
In service mode menu select:
[6] Common
[6] NV Rebuild

Did you do select [4] Restore Cal/NV and reboot ?

Yes.. i did select [4] Restore Cal/NV and reboot.. is there anyway to rebuild the efs

So what exactly were you doing to the phone that caused the imei to be lost? Rom flash? Deleting files in /efs? Knowing the cause will help with solution. What Rom are you currently on? What file names are in /efs/imei folder?

IMEI folder contains - bt.txt / keystr / mps_code.dat... i set to default nv_ram from dial secret codes.

nkamurlekar said:
IMEI folder contains - bt.txt / keystr / mps_code.dat... i set to default nv_ram from dial secret codes.
Click to expand...
Click to collapse
If I'm understanding correctly, the reason the IMEI was lost in the first place was because you did a 'Load Default NV' from the 'REBUILD NV' menu?
Sorry, but your out of luck. That menu option rebuilds the efs partitions containing the IMEI information stored in mmcblk0p18 and mmcblk0p19 with default values and is not recoverable.

Is there no way to fix this? I'm in the same boat. I have the IMEI number (it's on a sticker on my retail box).........but which file(s) need hex edited to get it back in there? I had to do this with my Sensation once (I believe it was editing mmcblk0p4 5 and 6?).
Any idea on this phone???

If cschmitt says it can't be done.... it probably can't be done.
Sorry!
--
sent from my I727 TROLLING DEVICE using XDA premium. Questions? look here: http://forum.xda-developers.com/search.php

Not sure if this is relative but check out MobileTechVideos. Maybe he can help you.

From the sounds of it blk18 and blk19 have the IMEI embedded in there somewhere according to his post? I looked at them both and don't see it, though.

cybertlc said:
From the sounds of it blk18 and blk19 have the IMEI embedded in there somewhere according to his post? I looked at them both and don't see it, though.
Click to expand...
Click to collapse
Try pm'ing him (cschmitt). Dude is a genius.
--
sent from my I727 TROLLING DEVICE using XDA premium. Questions? look here: http://forum.xda-developers.com/search.php

mindmajick said:
Try pm'ing him (cschmitt). Dude is a genius.
--
sent from my I727 TROLLING DEVICE using XDA premium. Questions? look here: http://forum.xda-developers.com/search.php
Click to expand...
Click to collapse
Thanks, I'll do that.

cybertlc said:
From the sounds of it blk18 and blk19 have the IMEI embedded in there somewhere according to his post? I looked at them both and don't see it, though.
Click to expand...
Click to collapse
You don't see them because both of those partitions are encrypted. One is the working copy other is a fail over backup, in case the first is corrupted. They also contains radio calibration data, phone isn't much use without it.
Did you attempt the restore golden backup thing listed a few posts back?

[UNSOLVED] Unknown IMEI/Baseband

LESSON LEARNT (for everyone): Please make sure to do a complete EFS backup before you do anything or you will end up like me!!!
So yeah I flashed Deodex_LF2_Cwm.zip yesterday, trying to deodex my DDFL2.
And following that I experienced total loss of mobile signal, baseband, IMEI, IMEI SV, and phone (*#1234#).
And I haven't been seeing this kinda thing to come, I did not back up EFS. (Yeah brilliant me)
So I tried a few of these:
[GUIDE] Recover your IMEI in 9 steps
Repair IMEI using EFS Pro
Reflashing from latona.pit then XXKPE; for a few times
Flashing stock ROM for Malaysia region (Froyo and GB)
Flashing various Modem.tar (DDLE1, DXKP7, etc) via Odin3 at different ROM levels (XXKPE, DDLF2, even CM10A4)
Restoring Nandroid backup from other SL user (Thanks Rich'Dawg')
But nothing worked so far yet.
Now that I checked the /efs folder is empty and there is only a folder named lost+found.
Some websites said about fixing IMEI for small fees but in cases of blank IMEI (*#06#), chances are only 30%.
And my last resort would be getting it replaced in Samsung service centre or any repair shop, which I suspect that the motherboard would be more expensive than some simple new Android phones.
Leaving this forum for the moment as to collect more money to get a new phone . . . :crying:
Lastly, thanks for all the input. Greatly appreciated.

Do you able to call anyone. ? if yes then no need to change anything. if no then you should search for imei solution on xda. there is some tutorial for fake imei.

nicsptl said:
Do you able to call anyone. ? if yes then no need to change anything. if no then you should search for imei solution on xda. there is some tutorial for fake imei.
Click to expand...
Click to collapse
Nope. I totally lost signal and mobile network.

cheeyeen said:
Nope. I totally lost signal and mobile network.
Click to expand...
Click to collapse
do you flash b4 CM10? if yes, search your sd card and External sd card for the installation backup of efs folder

chongns said:
do you flash b4 CM10? if yes, search your sd card and External sd card for the installation backup of efs folder
Click to expand...
Click to collapse
Yes I did but nope I couldn't find. sucks.

It is in a folder name backup
Sent from my GT-I9003 using Tapatalk 2

chongns said:
It is in a folder name backup
Sent from my GT-I9003 using Tapatalk 2
Click to expand...
Click to collapse
Sad enough this folder does not exist in my phone....
Have you had any idea if Samsung would fix this in Malaysia..? Or how much would that be.
I spent like 10 hours trying to look for a solution but >"<

cheeyeen said:
Sad enough this folder does not exist in my phone....
Have you had any idea if Samsung would fix this in Malaysia..? Or how much would that be.
I spent like 10 hours trying to look for a solution but >"<
Click to expand...
Click to collapse
no idea of how much it should be.
but a idea to help you,
1st idea:
go in recovery and fix permission.
2nd idea:
you said you flash Deodex LF2 in CWM, it should not touch efs folder. so, very high change of your nv_data.bin file backup still good.
OK. use any file browser look in the efs folder, see if the below file still exiting, (they are hidden file)
check on the file date. is the date older than the date you flash the zip, if yes, this is the one original from your phone.
the file name start with a dot
.nv_data.bak - ( this is your imei backup file) copy and rename the .nv_data.bak to nv_data.bin and set permission and change owner.
.nv_data.bak.md5 - (delete this file first)

chongns said:
no idea of how much it should be.
but a idea to help you,
1st idea:
go in recovery and fix permission.
2nd idea:
you said you flash Deodex LF2 in CWM, it should not touch efs folder. so, very high change of your nv_data.bin file backup still good.
OK. use any file browser look in the efs folder, see if the below file still exiting, (they are hidden file)
check on the file date. is the date older than the date you flash the zip, if yes, this is the one original from your phone.
the file name start with a dot
.nv_data.bak - ( this is your imei backup file) copy and rename the .nv_data.bak to nv_data.bin and set permission and change owner.
.nv_data.bak.md5 - (delete this file first)
Click to expand...
Click to collapse
Fixed permission.
I found one .nv_data.bak dated year 1994 , which I think came in when I was trying to flash some efs fixes i found in XDA.
Without much hope I tried what you said, but still nothing happened. IMEI blank, baseband unknown.
Is it possible to have the mobile phone repair shop with RIFF or Jtag or some box thingy to have this done?

i think you must change the motherboard

cheeyeen said:
[Request] Is it possible if anyone could send me a Nandroid backup of a working rom, so I could restore it via CWM? (It is a way I found in the XDA forum).
...
So yeah I flashed Deodex_LF2_Cwm.zip yesterday, trying to deodex my DDFL2.
And following that I experienced total loss of mobile signal, baseband, IMEI, IMEI SV, and phone (*#1234#).
And I haven't been seeing this kinda thing to come, I did not back up EFS. (Yeah brilliant me)
So I tried a few of these:
[GUIDE] Recover your IMEI in 9 steps
EFS Pro
Reflashing from latona.pit then XXKPE; for a few times
Flashing various Modem.tar (DDLE1, DXKP7, etc) via Odin3 at different ROM levels (XXKPE, DDLF2, even CM10A4)
But nothing worked so far yet.
Now that I checked the /efs folder is empty and there is only a folder named lost+found.
And my last resort would be getting it replaced in Samsung service centre??
I don't know how much would it cost in Malaysia to change the motherboard but I'm sure it will be stupidly high...
Or.. does that mean my time in i9003 forum is up..? :crying:
Please help me because I don't want to buy a new phone yet! :crying:
Click to expand...
Click to collapse
Mate, do you like JellyBam V.1.3.0? Because that's the only Nandroid backup i have in my phone. I was thinking to upload it to my Box account for Emergency Backup if i don't have my computer. If you like, i can upload it for you, but the size of the backup would be nuts, it's 850 MB. It's up to you.

Rich'Dawg' said:
Mate, do you like JellyBam V.1.3.0? Because that's the only Nandroid backup i have in my phone. I was thinking to upload it to my Box account for Emergency Backup if i don't have my computer. If you like, i can upload it for you, but the size of the backup would be nuts, it's 850 MB. It's up to you.
Click to expand...
Click to collapse
I would try anything as long as it works! Please do!

Best of Luck
a friend of mine ran through the same same problem and i think he did some sort of repair from a shop but later we came to know that the backup can do the task not sure whether that work or not but u can give it a try,, BEST of Luck with that..... Hopit Fix the Issue

Good luck sir! As far as I know, if you would choose to replace the motherboard from repair center, it would cost you more or less 80% of the original price of the phone. So it would seem that you have to buy a new one. I hope that a nandroid backup (as stated above) would solve the problem. God bless you! Think positive

i have the same problem and tried those solution the TS tested and still no luck, i wan't to try those nandroid backup but can't find any.

Rich'Dawg' said:
Mate, do you like JellyBam V.1.3.0? Because that's the only Nandroid backup i have in my phone. I was thinking to upload it to my Box account for Emergency Backup if i don't have my computer. If you like, i can upload it for you, but the size of the backup would be nuts, it's 850 MB. It's up to you.
Click to expand...
Click to collapse
Bro,pls upload... let me try it... if imei is changed to 043xxxxxxx then we can fix with z3x box

Xperia.IN said:
Bro,pls upload... let me try it... if imei is changed to 043xxxxxxx then we can fix with z3x box
Click to expand...
Click to collapse
can you share it with me if you have nandroid backup, i will try to fix it with z3x and asansam

never thought deodexing gonna brick the phone.. ive deodex once without any problem.. without any doing backup before that.. lucky me.. huhu
try other people's nandroid and see.. i dont think it needs a specific emei or what so ever.. as long as its a backup.. goodluck..

the problem is we can't find someone to lend us their nandroid backup.

I did it!
Bro, try use Efs Pro, http://forum.xda-developers.com/showthread.php?t=1308546
Try the new version, you can choise Qualcom version, write you IMEI number, go back to initial and do NV Restore.
My SG Fit go back to life (after maybe 4 months with 0000000000000 Imei). :good:
I´m very happy
Hope it work for you! Good luck!

[help needed] dead network & blank imei ???

Hello everyone, i recently buyed a used samsung galaxy r. Its in good condition.
But it has one serious issue ie, no network & blank imei number.
I browse google whole day & found that this happening becoz of corrupted efs, i checked efs folder via root explorer, there is no imei folder in it :banghead: i also tried efs backup but nothing done.
Why this issue happening, is there any one who can help me out to resolve my no network issue,
I also went to nearest service center, they told to change the board which cost around rs8500 (indian).
Help me frnds, my galaxy r is without network & blank imei ?????
My last hope is XDA!

Help ???

You cannot fix it without the original EFS. You could ask the seeker if he/she has a backup of the folder. Except restoring the backup, only SSC can fix it.
Sent from my CM10.1-powered GT-I9103

The problem is maybe with just the nv_data.bin file, you may check out this thread.
Sent from my CM10.1-powered GT-I9103

Adam77Root said:
You cannot fix it without the original EFS. You could ask the seeker if he/she has a backup of the folder. Except restoring the backup, only SSC can fix it.
Click to expand...
Click to collapse
what if the person uses efs backup of any friend(say mine)?
wont he be able to recover imei..

niks_25893 said:
what if the person uses efs backup of any friend(say mine)?
wont he be able to recover imei..
Click to expand...
Click to collapse
i guess Both the Mobile will not work at same time....

Adam77Root said:
The problem is maybe with just the nv_data.bin file, you may check out this thread.
Sent from my CM10.1-powered GT-I9103
Click to expand...
Click to collapse
Thanks for help, but will this work ?? But in my case there is no imei folder inside efs will other galaxy r efs backup will work????
I will try this & plz support me

It makes no sense to create an EFS backup of an already corrupted partition. Also, the imei folder has nothing to do with the actual imei number. It is stored in the nv_data.bin file.
Sent from my CM10.1-powered GT-I9103

Adam77Root said:
It makes no sense to create an EFS backup of an already corrupted partition. Also, the imei folder has nothing to do with the actual imei number. It is stored in the nv_data.bin file.
Sent from my CM10.1-powered GT-I9103
Click to expand...
Click to collapse
Actually Sir, I format my system partition with odin and flashed stock gb rom 5 to 6 times while resolving my issue, and at time i accidently deleted the contents of EFS folder & reboot but still no network & imei..
So i again flash stock rom via odin & all EFS files(nav_data.bin) again automatically generated, is this normal ????? but no luck to restore my imei & n/w ..
Below is the screenshot of my phone

Yes, the file is generated automatically, but it doesn't know what to generate. So it either generates a fake IMEI or garbage I assume. We would need to know about the internals of the nv_data.bin file to fix it. You have to take it to SSC or someone who knows about the details.

Above method is not working.. any helps please..

Visit Service center of samsung. They can only help you now.

Hey, i jst wanted to know out of curosity...
when we backup thru cwm, does it also baks up the efs folder ??
if i have my prev cwm backup say of gb n if i happened to b on ics/jb and suddenly my imei vanishes.. den does gb cwm backup can restore back d imei ??
Sent from my GT-I9103 using Tapatalk 2

vipul12389mehta said:
Hey, i jst wanted to know out of curosity...
when we backup thru cwm, does it also baks up the efs folder ??
if i have my prev cwm backup say of gb n if i happened to b on ics/jb and suddenly my imei vanishes.. den does gb cwm backup can restore back d imei ??
Click to expand...
Click to collapse
No it doesnt backs up efs folder..hence we need external tool to backup..
CWM only backs up system,data,cache folder and kernel..

Thankyou all !!! Finally i got my samsung galaxy R i9103 from nearest service center, blank imei & no n/w issue is now solved. They told me that they change the motherboard of my fone to resolved imei & no n/w problem. & also got updated to 4.0.4.
Now am ready to try all awesome roms for i9103. :thumbup:
Devs, plz suggest any????
And also plz give me the link and how to do the perfect efs backup of i9103 ????
Sent from my LG-P500 using xda premium

kunnaliskinng said:
Thankyou all !!! Finally i got my samsung galaxy R i9103 from nearest service center, blank imei & no n/w issue is now solved. They told me that they change the motherboard of my fone to resolved imei & no n/w problem. & also got updated to 4.0.4.
Now am ready to try all awesome roms for i9103. :thumbup:
Devs, plz suggest any????
And also plz give me the link and how to do the perfect efs backup of i9103 ????
Click to expand...
Click to collapse
Follow this thread to backup your efs partition.
You r on ics right now, i recommend you install CWM and flash ardatdat_i9103_ics_kernel_v4.zip first.
For Awesome Rom, visit this and download latest nightly build.
Download gapps from here.
For Installation Method, visit this thread and follow Procedure II..
Happy Flashing..

IMEI Lost Help

Pls can anybdy help me restore the imei of my realme6 phone

The IMEI number is usually printed on the box that your phone came in.

D∆$H said:
Pls can anybdy help me restore the imei of my realme6 phone
Click to expand...
Click to collapse
Flash stock ROM .

dedq said:
Flash stock ROM .
Click to expand...
Click to collapse
Already done still no luck

jwoegerbauer said:
The IMEI number is usually printed on the box that your phone came in.
Click to expand...
Click to collapse
Bro from phone IMEI no. Are deleted

D∆$H said:
Already done still no luck
Click to expand...
Click to collapse
Take not that the original /EFS partition - where phone's IMEI and other network stuff is stored - isn't touched when re-flashing Stock ROM or any other ROM, will say re-flashing phone's Stock ROM never brings back a lost IMEI.

You must backup your efs partitions before you begin experimenting and installing things on your device.
In future you can do this (with root) and termux app: type: su (enter) Grant root, type this: dd if=/dev/block/sdf2 of=/sdcard/modemst1.bin bs=2048 (enter)
dd if=/dev/block/sdf3 of=/sdcard/modemst2.bin bs=2048 (enter)
SD card will have backed up files to save on it. All credit for this goes backup method goes to @Funk Wizard where I first learned this on a OnePlus device xda forum. Transfer the backed up files to PC, USB thumb drive, cloud or where ever they're safe. If this ever happens again you can use fastboot from your PC to flash these efs partitions and it will restore your IMEI and your device will work. I do not know of any other way to do this excerpt this way. This is why 8ts so important to always backup your efs when you get your device!