Database Develop

[Q] I think I deleted the contents of my /efs folder. Help!!!!

Hi all,
I recently upgraded to JPM version of froyo, and wanted to change back the product code to the original. After restoring from the .bak files, I got back the original product codes. However, while copying to another location for backup, I deleted the contents of the /efs folder by mistake (atleast I think I did).
The /efs folder is empty, but the phone still works fine. Haven't rebooted the phone for fear of bricking it. Is there a way to recover deleted files? Or are those files just hidden from view?
Someone please help
Update:
Managed to get of copy of nv_data.bin from a folder used by sgstoolbox. Rebooted the phone and phone works fine. Checked the folder contents, has nv_data.bin, nv_data.bin.md5, .nv_state and a folder named .android. Is there anything else which should be there? How to restore?

Do you have a backup of your /efs folder?

Woah same happened to me just some Hours ago !
If you used SGS Toolbox to check, you are lucky because it automatically creates a backup.
-> I think SUFBS Explorer deleted the efs because i am sure i checked "copy" ... anyway !
If you have any backup file, you are lucky.
One question by the way:
I´ve also lost the "IMEI" Folder, but my IMEI is still correct. Is that because ne nv_bin is just enough for the system checks ?
EDIT: Go and check with SGS Toolbox, if it displays your code, it is still there + it creates a backup file on your sdcard (you should double-check that anyway)

I'd say that the best and easiest way of restoring your product code is by using this: http://forum.xda-developers.com/showthread.php?t=787163
messing around with /efs folder is not a good idea, especially if you don't have a back up.

Just remembered that I have a titanium batch backup of system + apps taken a while ago when I was on stock firmware. Any way to restore the /efs folder from that? The shock of losing the /efs folder was enough to jolt me out of a beer induced haze ;-)
The phone still works, which is good news. But anyway to restore from Titanium backup?

fullerms said:
Just remembered that I have a titanium batch backup of system + apps taken a while ago when I was on stock firmware. Any way to restore the /efs folder from that? The shock of losing the /efs folder was enough to jolt me out of a beer induced haze ;-)
The phone still works, which is good news. But anyway to restore from Titanium backup?
Click to expand...
Click to collapse
Titanium does not backup /efs.. If you don't have a backup, you're basically screwed! Sorry to be the bearer of bad news

Like I said, the phone works fine after I restored the nv_data.bin file. I listed the files which were rebuilt by the system. Is there anything else missing? Can someone post a screen shot of the contents of your efs folder?
Sent from my GT-I9000 using XDA App

fullerms said:
Like I said, the phone works fine after I restored the nv_data.bin file. I listed the files which were rebuilt by the system. Is there anything else missing? Can someone post a screen shot of the contents of your efs folder?
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Oh, so you DID have a backup? Nice! Besides what you lited in the first post, there are the following things:
.imei (file)
imei (folder)
- .nvmac.info
- bt.txt
- mps_code.dat

Any idea what those files are for? Possible to check what they contain?
Sent from my GT-I9000 using XDA App

Like i said, my imei folder was deleted aswell...
No problems so far with that !

Use rootexplorer, dont use ASTRO. It's crap and does not show all files, including the whole /efs

My EFS folder is empty too...and I don't know why, I have only flashed a couple of time with odin and JM9....
But SGS Toolbox report my csc correctly as ITV....even if I used the HUI csc from my operator with odin....
Could it be a problem if the efs folder is empty? The phone is working well...the only problem is that it loses very often the wifi connection...but I don't think that it is csc related...

QUESTION: Restore nv_data.bin backup made with SGS Toolbox

I have flashed darky's no wipe and was using Axura before
Axura never changed my product code or IMEI
However darky's has changed my product code but not the IMEI
I have a proper backup created with SGS Toolbox but how do I restore it? I have root explorer so should I use that to overwrite the folder with the backup?
I only have my phone at the moment so restoring the backup from SD with the phone is what I'm looking for.
Thanks,
Brian
Sent from my GT-I9000 using XDA App

B-Naughty said:
I have flashed darky's no wipe and was using Axura before
Axura never changed my product code or IMEI
However darky's has changed my product code but not the IMEI
I have a proper backup created with SGS Toolbox but how do I restore it? I have root explorer so should I use that to overwrite the folder with the backup?
I only have my phone at the moment so restoring the backup from SD with the phone is what I'm looking for.
Thanks,
Brian
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
Just replace the nv_data.bin and nv_data.bin.md5 back to your /efs folder. leave the .bak files alone if they are dated from august. those are the originals, these can be used to restore your .bin and .bin.md5 files.
if you have root explorer I would honestly copy that whole EFS folder to your SD card and maybe to a backup on the computer.

Nah no Aug files... Some nov files though... And i got this phone after the files' date so i suppose those may be it? Im guess having a proper product code and imei is all that matters correct?
Thanks and merry xmas
Sent from my GT-I9000 using XDA App

Ok.. So ive tried replacing the files with my backup and the product code stays the same... However when i tun a product check it says the backup has the correct product code... So i go to my earliest product code check folder and rename the files and paste them into the efs folder then reboot... Am i doing something wrong? I have the correct imei and things are working so should i just get a computer handy and follow the steps to restore everything?
Sent from my GT-I9000 using XDA App

useless
Sent from my SAMSUNG-SGH-I897 using XDA App

Unknown Baseband, Unknown IMEI

Hi!
I downgraded from ICS 4.0.4 IMM76K to 2.3.6 GB.
Everything was smooth, EXCEPT THAT SIM IS NOT DETECTED.
The same sim is detected in all other phones. No other sim is detected in my gt i9000!
Plz hlp me with the easiest way cuz im a noob!! i've tried the "9 steps to recovering IMEI" but i get stuck at the terminal app!! its not working for me! :-((
I have the eps backup file on my sd card, i copied it to my root phone dir but it still didnt solve the problem!! I tried EfsPro as well, didnt work for me! Im a noob so i may be missing something. PLZ HELP ME PPL!! :-((
I'll highly appreciate your help ppl!!
Thanks

Where did you copy your Backup
Sent from my GT-I9100 using Tapatalk 2

I made a backup via cwm..im trying to restore "data" and "system" via advanced restore and see wether it works..currently doing that

OK let me know then!
If it not works, try the app nitrality from market, you can try to restore your efs backup with the app
Sent from my GT-I9100 using Tapatalk 2

didnt work.
So now I am fully restoring it via CWM, before i was rebooting into CWM mode, and then advance restoring.

Ok I'm gonna also try that app and let you know!
Btw thank you so much for your help man!! Im so bloody depressed! :-(
The damage is reversible right? I mean im not a gonner am I? I'll keep you updated!

Since you made an backup of your efs folder its always possible to restore so no reason for getting depressed mate!
Sent from my GT-I9100 using Tapatalk 2

I restored it fully, but after the phone rebooted, it just got stuck at the boot screen..i took out the battery after 5 mins as it was still stuck at the boot screen.
What do you suggest now? I'll try that app you suggested once I get my firmware working!
Retiring for bed, will follow up on your advice when i wake up..

Go into the recovery and make a factory reset, if the Akku trick won't work
Sent from my GT-I9100 using Tapatalk 2

Did you make sure you flashed with a .pit file as well,? You must do this down grading as the file partitions are different from ics

Ok I tried to go into recovery mode, but the phone would just boot again, from the very first boot screen (where samsung is displayed at the bottom)..so should i flash again with the .pit thingy?

ok guyz nitrality didnt work..flashed it with gingerbread with .pit again..no imei number

caddyfreak said:
ok guyz nitrality didnt work..flashed it with gingerbread with .pit again..no imei number
Click to expand...
Click to collapse
Do you have a back up of your efs folder?

Yes i have the efs backup on my pc and ds car. I tried copying the efs to system root dir, but no luck.

the nv_data.bin file is 2MB in the backup folder on my sd card, but as soon as I copy the whole efs folder to root dir, this nv_data.bin file is 0bytes size..

One question, when u copied your Backup into the root directory
Did you made a reboot then?
Sent from my GT-I9100 using Tapatalk 2

ablor said:
One question, when u copied your Backup into the root directory
Did you made a reboot then?
Sent from my GT-I9100 using Tapatalk 2
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Click to collapse
No I did not reboot after copying it to the root directory. Let me try and I'll let you know

I copied nfs to root again, but the nv_data.bin file is reduced from 2mb to 0bytes as soon as its copied...and reobooted but still no luck...

What app do you use for copy your Backup and another question, in what folder exactly do you copy it
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ablor said:
What app do you use for copy your Backup and another question, in what folder exactly do you copy it
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
I use root explorer (got the free one from some site) I copy it to " /efs" its the first window that comes up when u open root explorer.. and i found another problem,
I dial *#1234#, I get:
PDA: I9000XXJVU
PHONE: Unknown
CSC: Unknown
telling u ppl so that you can understand the problem better

[Q] EFS partition

Hello
I have a Samsung Galaxy S with SlimBean Installed, previously I had the stock 2.3.3 XEF version and CM9
When I rooted the device for first time the first thing I did ws backing up the EFS partition, I have made subsequent backups since then. However, the files don't seem to be equal and don't match the .MD5 signatures provided.
Do the files in this partition change over time? Does that mean they are getting corrupted? The most logical thing would be that the signatures matched the files but they don't..
Thank you.

Hello
Any ideas of why this happens and if it's normal?
Thank you.

And I've just checked my phone, the .bak files have dissapeared.
I've got an old backup tho, but why did they dissapeared?
Thanks.
Edit: The rest of the files are in the efs folder, they weren't displayed because Slim filemanager doesn't show hidden files by default.
So the only question remaining is: Do you know why the MD5 signatures don't match the files?
Thank you.

I think since IMEI is unchanged - thats ok. The most important file you have to keep is nv_data.bin (i think that one) it holds your IMEI. So as long as your phone works - no panic.
Sent from my GT-I9000 using xda app-developers app

Hello
Thanks. But why does the hash change and differs from it's MD5 signature?

Probably so.. dont worry about it and keep nv_data.bin just in case.
Sent from my GT-I9000 using xda app-developers app

When you flash back to Stock 2.3.6 with or without Root it will Fix EFS for you ..just to let you know

[Q] s3 mini missing imei help

Hi, i am facing a problem with my s3 mini GT-I8190 there is no imei when i go to settings under status the imei is unknown when i dial *#06# it shows null i restored my efs but no change i took a backup from working s3 mini and restored to my phone it is still null in efs ther is no nv_dta.bin file i looked in another working phone from i took backup that phone also don not have nv data file i am curious that how that phone works wihtout that nv_data.bin file please have look in your efs and tell me that you have the file or not because i think s3 mini works with that

I have these folder/files in my efs folder i hope it helps you a little :

yes you also don't have that file it means i have complete efs then why imei is null can you help?

qasim799 said:
yes you also don't have that file it means i have complete efs then why imei is null can you help?
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Click to collapse
How you can see one of my uploaded screenshot, is in the imei folder a file with the name "mpe_code.dat". How much bytes does it taken in your efs/imei folder?

I searched for nv data file which is not present my mps code file size is 3 b
Sent from my GT-I8190 using XDA Free mobile app

qasim799 said:
I searched for nv data file which is not present my mps code file size is 3 b
Sent from my GT-I8190 using XDA Free mobile app
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Which app or windows program you used for backing up your efs folder?
Maybe can ADB restore your efs folder but i'm NOT sure if it works.

xXPR0T0TYPEXx said:
Which app or windows program you used for backing up your efs folder?
Maybe can ADB restore your efs folder but i'm NOT sure if it works.
Click to expand...
Click to collapse
i tried many tools like efs pro adb and i also tried spt octupus boxes

qasim799 said:
i tried many tools like efs pro adb and i also tried spt octupus boxes
Click to expand...
Click to collapse
Then i am out of ideas. Sorry

xXPR0T0TYPEXx said:
Then i am out of ideas. Sorry
Click to expand...
Click to collapse
the problem is not efs