Database Develop

[Q] (i9000)Deleted efs folder without backup!! Possible to restore?

Unlike other cases posted previously...
All files in efs were deleted, including all hidden .bak files
Now, kies displayed my phone have a product code of XXXXXXXXX and a fake IMEI...
Is it possible to restore the nv_data.bin and other files??
Please help! Thanks....

I have the same problem, is there a solution for that?? Please answer!

Did you install sgs toolbox and used it's check product code function before you deleted your efs? If yes, there is still a chance. If no, there are currently no public fix available yet.
Sent from my GT-I9000 using XDA App

We are on the same boat, as what francis posted. No public fix yet but pretty sure there will be.. its just a matter of time.

the same thing happened to me yesterday when i flashed Cyanogenmod 7, got fake imei but everything worked just fine (call, data, market).
today i deleted everything from efs folder using Root Explorer then installed i9000XWJS5 then, surprise, i got my original imei back.
do not know how and do not know if it will work on you but it worth a try

The same thing happened to me.
If I dial *#06# no imei appears.
In order to use the phone everytime I boot up I have to give r/w permission to system folder. Otherwise it doesn't recognize the sim card.
It seems to me that that the device is not anymore able to recognize itself.
If I try to install CM or other AOSP rom I have status 7 error.
In Rom manager I have a window where I should select wich kind of device it is.
In fastweb installer there is a list of devices and I have to choose wich of them I am using.
I know that there is nothing to do with warranty. But is it possible to go back to a stage where it is possible to install AOSP rom?
Thanks

don't know it may work or not, but some custom roms make a backup of the efs folder on sdcard under /sdcard/backup/efs or /sdcard/backup/efs-XXX
(XXX= some numbers). you can try to restore it from there.
again don't know for sure...

Normallary Not

hellboy2703 said:
don't know it may work or not, but some custom roms make a backup of the efs folder on sdcard under /sdcard/backup/efs or /sdcard/backup/efs-XXX
(XXX= some numbers). you can try to restore it from there.
again don't know for sure...
Click to expand...
Click to collapse
Thanks.
I have checked, but there is no backup.
I know the only one to blame it's me.
Do you think that there is anyway to make possible installing AOSP rom?

Watch out! That guy below me is spam! (User @yankee86)

[Q] URGENT! IMEI screwed, need help to restore!

Hey, I got some problems. Posted in another forum, but it's very urgent so I post it here to. Just quoting what I previously posted.
Hey, flashed the JVS modem on top of the Chameleon Final. Didn't get any signal and the baseband version in settings stated "unknown". Tried another modem, JVO and flashed back to Chameleon modem, still not fixed. Also tried to wipe everything and install rom again... did not help either. Odin didn't report any errors whatsoever.
Desperate for some help her guys!
Click to expand...
Click to collapse
Got reply that my IMEI was screwed, and replied:
[quote author=bahafeld link=topic=1931.msg13081#msg13081 date=1316107492]
Okey, I have backup of my original EFS folder. Isn't it there the IMEI is saved? can I just copy it over again with Root Explorer?
Please help me out here. All the guides I've found have the EFS saved in a .tar format. However I just backed up the EFS folder with root explorer. Anyone know I can recover my EFS, tried just copying it back, but that did not work.
Its kinda urgent!
[/quote]
So I hope you guys at XDA can help me a bit faster.
Thx
bahafeld

if you have a .tar version of your EFS. Unzip it. Copy all the contents of it, And paste them to the /EFS on the phone. Making sure they overwrite the current contents.
Once that has done, Restart the phone without backing out of root explorer (or what ever app you are using to copy/paste these files).
If that fails, Repeat the above step but ONLY copy / paste the NV_data.bin & NV_data.bin.md5
And finally if that fails. Backup all your stuff using Titanium Backup (or similar) And re flash a stock Froyo ROM. Maybe older, its upto you.
That will Definitely restore the IMEI, Then re-root and go back to whatever ROM you wish.
Good luck.

[Q] Lost IMEI, etc the /efs folder and how to reuse and oldcopy

I am puzzled and confused about the /efs folder.
I have a P1000 which was running a January nightly build of CM10; this worked, including the telephone function, sort of...
I then upgraded to Android 4.2.2, CM10.1 from 21030728 - which works much better BUT it lost all the telephone capabilities (it shows Baseband version unknown). After much digging I think understood correctly that I must have ruined my /efs folder.
I do have previous /efs folder copies (not made with any particular tool) on my external SD card but even using something like Root Browser or Root File Manager to copy an old version (in which the telephone worked) to write over the existing /efs folder I do not regain access to the phone function.
My questions are these, if anyone can explain to me what is happening for I would like to understand:
1. I tried to delete the existing /efs folder (using Root Browser and Root File Manager) but it does not delete: why?
2. I am clearly doing something wrong when trying to copy an old version in order to write over the existing one (which does not work): what and why and how do I get around this to make it work?
3. How does Android protect the /efs folder and is there a way to get round this?
i have read far and wide but so much seems to be contradictory or inconsistent. Or is there a place where all is explained (and if so where?).
Thank you in advance.

Hello,
I had the same problem. I have restocked my Galaxy Tab but it did not work. I have tried to flash the modem with odin and it works! After reboot my Galaxy Tab i have Signal and the imei is restored. I have root my Galaxy Tab again and flash CM10.1 and it works prefect. I have now CM10.1 on my tab and i can use phone functions and the imei is restored. Have you tried to restock it and flash the modem with odin?
Good Luck!

Besides restocking or flashing a modem, you can try and restore your EFS backup with EFS Professional... Try to give it a shot.

Changing the IMEI number

Hello
I own a Galaxy S I9000 with Slimbean 4.2.2 for a few years already.
I am in another country now for a few days and I received a message saying that my phone's IMEI is not registered and will ban me from using their service unless I pay a tax.
If I were going to stay for a Little longer I wouldn't really mind to pay for it, but since I am leaving in one week it seems to be quite stupid.
However, I tried to slve it the legal way by going into the office, but I won't be able to do so until Monday because it's closed
I have a backup of my efs folder for a few years and a new one I did today. i also checked the permissions and the groups it belongs to so I quite know what I am doing. I tried renaming the nv_data.bin and bak files so the phone wouldn't find them and restarted just to get a generic IMEI number but the phone didn't register on the network. I know that depending on the operator the phone might register or not, so in this case it's not doing it.
My question is how could I change the IMEI number. I tried my own methods but don't seem to be working ok. I am not sure if the phone won't just work if the IMEI number in the file and the motherboard itself don't match.
I know changing an IMEI is an ilegal process and I am unsure if this is against the rules so feel free to close the thread in case it is. I have no plans on doing ilegal stuff with it, mainly because it's my own phone
Any ideas?
Thank you.

albertocastillo2001 said:
I am in another country now for a few days and I received a message saying that my phone's IMEI is not registered and will ban me from using their service unless I pay a tax.
Click to expand...
Click to collapse
This sound me like a scam.... : (
Since you pay to use the SIM card from that carrier, doesn't matter what phone IMEI you are using as long as that phone is unlocked for that carrier...

A scam can be possible. Altho it depends on the country you're in.. Also i woudnt reccommend it if you're there on a holiday of some sort.

Hi
Thank you.
No, it's not a scam. I confirmed it. And my phone has already been blocked.
The reason this is done, as far as I know it's because they want to prevent phones from other countries being sold here
Can I do what I proposed some how?
Thanks!

albertocastillo2001 said:
Can I do what I proposed some how?
Click to expand...
Click to collapse
read this
Check this out!You , YES! you are an " Android ". Not your phone but U.
You Must watch this documentary concerning your privacy Terms & Conditions we had agreed to, by using a PC or Smartphone
How to say Thank you? If you find any post helpful on XDA, please click on the Thanks button
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Hi
Thanks xsenman I am a bit affraid to do a full EFS restore since my pone is working properly, there's nothing wrong with it, just that it's IMEI has been blacklisted.
I tried to use now my existing EFS folder and using a nv_data.bin file from a friend so the IMEI would change. I tried setting right permissions and the right group, but the pone seems to always change those on next restart and sets only rwx for owner. I also tried to make a copy of the nv_data.bin of my friend to .nv_data.bak too
Any other idea

albertocastillo2001 said:
but the pone seems to always change those on next restart and sets only rwx for owner.
Click to expand...
Click to collapse
all details are on that post, how to make it stick as well as final solution, please read again
Check this out!You , YES! you are an " Android ". Not your phone but U.
You Must watch this documentary concerning your privacy Terms & Conditions we had agreed to, by using a PC or Smartphone
How to say Thank you? If you find any post helpful on XDA, please click on the Thanks button
If you are using XDA App or Tapatalk, long press on the post and select :good: Thanks Its easier to give "Feedback" in this manner than make an additional post.​

Hi
actually I did follow that but not all of it since it asks you to restore a efs you can get in the thread
However I didn't want to risk too much since my EFS is fine. And when I get back to my country everything will work fine because I can use my own IMEI. But since I am now in a country that has blocked my IMEI I am trying to use just a friend's nv_data.bin file in my phone.
However even if I set the same permissions and the group that you talk about in the thread it won't work for this file. This is what I tried already, sorry if I didn't mention it before
If I set 777 and root group to on my friend's file (as my original nv_data.bin has by default for some reason, since I think the right ones are 644 radio:radio) then the file permissions won't change in next reboot but still it will give me a generic IMEI number
If I set 644 root:root as indicated on your post on my friend's file it will change permissions on next reboot as commented in the earlier post
If I set 644 radio:radio to my own nv_data.bin file or 777 root:root as it's by default for some reason, it works., but again, it's my own file
So could it be that the phone knows that my friend's nv_data.bin file is from another phone? The same settings don't seem to work for a file that is not mine
Also, to let you know I am using Slimbean 4.2.2, I can't flash my phone to GB at the moment.
Thank you!

albertocastillo2001 said:
So could it be that the phone knows that my friend's nv_data.bin file is from another phone?
Click to expand...
Click to collapse
First and foremost, the moment you want to Flash, the rule of the thump is you should have a EFS folder backed-up somewhere else ( external SD card or PC or cloud)
so IF you do have a backup, than overwriting it would not be a problem as you can easily restore it with your backup ( this applies to any an all files and folders in the Internal phone memory)
if you are swapping IMEI the files inside the efs folder, nv_data.bin and nv_data.bin.md5 has to be overwritten. swap may not last as the moment you flash again, they will be conflict between IMEI in the Nand memory and IMEI in your folder when booting the new ROM also note networks will reject two phones with same IMEI trying to connect to their network
the normal steps should be overwrite, (not replace) than save, than quit all using the editing app than reboot
if it fails to stick, one way is
Copy Paste EFS folder with root explorer (meaning overwrite it) , after paste , save and quit using menu, power down phone and reboot into recovery and wipe cache before rebooting....this worked for some
you can always fix permissions in CWM too and read this for better understanding.
Take Note, Altering IMEI is illegal in most countries​
Check this out!You , YES! you are an " Android ". Not your phone but U.
You Must watch this documentary concerning your privacy Terms & Conditions we had agreed to, by using a PC or Smartphone
How to say Thank you? If you find any post helpful on XDA, please click on the Thanks button
If you are using XDA App or Tapatalk, long press on the post and select :good: Thanks Its easier to give "Feedback" in this manner than make an additional post.​

Hi xsenman
Thanks for your replies. Sorry if I couldn't reply earlier.
I actually renamed my original nv_data.bin to nv_data.bina and nv_data.bin.md5 to nv_data.bin.md5a so I could put my friend's nv_data.bin and then set the right permissions and group. I thought this would have been enough but it didn't work.
Replacing the complete EFS folder "scares" me a bit just in case I get to mess something important. I guess this is because I really know that the efs folder is neccesary for the pone to work fine and I am affraid to mess something up. Even if I got a backup (Actually I got more tan one, since I did my first backup last year, and a newer one 4 days ago)
I asked my friend to give me a copy of his complete EFS folder but apparently he doesn't know to.
Thanks for your help.

albertocastillo2001 said:
I asked my friend to give me a copy of his complete EFS folder but apparently he doesn't know to.
Click to expand...
Click to collapse
look here for dummy EFS folder [15 to 23] Problem:-
Check this out!You , YES! you are an " Android ". Not your phone but U.
You Must watch this documentary concerning your privacy Terms & Conditions we had agreed to, by using a PC or Smartphone
How to say Thank you? If you find any post helpful on XDA, please click on the Thanks button
If you are using XDA App or Tapatalk, long press on the post and select :good: Thanks Its easier to give "Feedback" in this manner than make an additional post.​

Hi
Yes. I forgot about that one but I looked at it before. I wanted to ask you why do I need it and why can't I use my own since the important files are nv_data.bin only?
Sorry if I am making a mess with this explanation. I forgot to tell you that when I renamed my original nv_data.bin, nv_data.bin.md5, nv_data.bak and nv_data.bak.md5, I pasted my friend's nv_data.bin file but I didn't paste his .md5 file since I don't have it. When I restarted the pone the MD5 file got generated.
Shouldn't the dummy EFS folder only be used when somebody knows that it's EFS is corrupted but the nv_data.bin is fine?

albertocastillo2001 said:
Shouldn't the dummy EFS folder only be used when somebody knows that it's EFS is corrupted but the nv_data.bin is fine?
Click to expand...
Click to collapse
that's what I noted from your first post as such I emphasized it, you only used one file, it should be two, that uploaded folder contain files from a broken i9000, so its more or less original , you can use only the two files in it. as i understand, you only want to use for a few days.
Check this out!You , YES! you are an " Android ". Not your phone but U.
You Must watch this documentary concerning your privacy Terms & Conditions we had agreed to, by using a PC or Smartphone
How to say Thank you? If you find any post helpful on XDA, please click on the Thanks button
If you are using XDA App or Tapatalk, long press on the post and select :good: Thanks Its easier to give "Feedback" in this manner than make an additional post.​

Hello
Oki, so since I don't want to mess up much with the EFS partition on my pone. Can I just overwrite nv_data.bin and nv_data.bin.md5 with the ones from my friend and then set the permissions and group?
I will ask him to send me the .md5 since he only sent me nv_data.bin
Would this work?
Thank you.

albertocastillo2001 said:
Would this work?
Click to expand...
Click to collapse
It should work, just overwrite files, and reboot after save and exit in menu, but if both of you are in the same network, both can be banned, if network decides to do so.
Check this out!You , YES! you are an " Android ". Not your phone but U.
You Must watch this documentary concerning your privacy Terms & Conditions we had agreed to, by using a PC or Smartphone
How to say Thank you? If you find any post helpful on XDA, please click on the Thanks button
If you are using XDA App or Tapatalk, long press on the post and select :good: Thanks Its easier to give "Feedback" in this manner than make an additional post.​

Thanks.
My friend will send me the file in a few hours. Once I try I will let you know.
I know about being banned but he's in my country and I am in another one at the momento. So nothing should happen.
His IMEI number will get banned in this country too after a few days. They are about to ban cheap Nokia pone I have too.
They just ban any phone that hasn't been bought in this country unless you pay that tax
Thanks!

Hello
I tried to add the nv_data.bin.md5 file from my friend. After restartng the pone I had my original IMEI instead of the original one or the generic one. So I think it's because it tried to restore the backup from nv_data.bak and nv_data.bak.md5
So, besides pasting my friend's nv_data.bin and nv:data.bin.md5 I tried to copy these files as nv_data.bak and nv_data.bak.md5 but after restarting I got a generic IMEi
I will try to ask my friend to send me nv_data.bak and nv_data.bak.md5 so I will replace:
nv_data.bin
nv_data.bin.md5
nv_data.bak
nv_data.bak.md5
with the ones from my friend and see what happens.
Thank you.!!

albertocastillo2001 said:
.
Click to expand...
Click to collapse
albertocastillo2001 said:
!
Click to expand...
Click to collapse
albertocastillo2001 said:
Hi
Click to expand...
Click to collapse
Here is the thing important for you guys
Follow this post

S3 MINI i8190 IMEI NULL after cyanogenmod update

Hi guys,
Yesterday I updated my cyanogenmod 11 with newest version doing a wipe cache first. After rebooting my phone seems to have an issue: the IMEI is null and I can't call or receive calls.
So I decided to flash the stock rom with odin, I thought that this could help, but nothing to do, the IMEI is still null and I can't use the phone
The first time I installed cyanogen I made a backup (using TWRP function), looking for that backup files, I discovered a file called efs.ext4.win, but if I try to open it with an unrar program, I see these files inside:
\.files
\bluetooth
\FactoryApp
\imei
\RFHAL
\RFHAL.DEF
\wifi
GUARDFIL
gyro_cal_data
pre_recovery.log
I don't see any "nv_data.bin" file or something like that. Is that normal?
Anyway, I think that EFS folder is corrupt or missing, i don't know. Is there a way to solve this issue? Thank you.

MaterialX said:
Hi guys,
Yesterday I updated my cyanogenmod 11 with newest version doing a wipe cache first. After rebooting my phone seems to have an issue: the IMEI is null and I can't call or receive calls.
So I decided to flash the stock rom with odin, I thought that this could help, but nothing to do, the IMEI is still null and I can't use the phone
The first time I installed cyanogen I made a backup (using TWRP function), looking for that backup files, I discovered a file called efs.ext4.win, but if I try to open it with an unrar program, I see these files inside:
\.files
\bluetooth
\FactoryApp
\imei
\RFHAL
\RFHAL.DEF
\wifi
GUARDFIL
gyro_cal_data
pre_recovery.log
I don't see any "nv_data.bin" file or something like that. Is that normal?
Anyway, I think that EFS folder is corrupt or missing, i don't know. Is there a way to solve this issue? Thank you.
Click to expand...
Click to collapse
S3 mini has no nv_data.bin file in EFS folder. You made already a backup of your efs, try to restore it with TWRP to get your IMEI back
Sent from my GT-I9301I using XDA Free mobile app

xXPR0T0TYPEXx said:
S3 mini has no nv_data.bin file in EFS folder. You made already a backup of your efs, try to restore it with TWRP to get your IMEI back
Sent from my GT-I9301I using XDA Free mobile app
Click to expand...
Click to collapse
Thanks for replying.
I tried to restore EFS folder using TWRP and my backup, but nothing changed, I still don't have Imei and baseband.
Do you think that flashing a PIT file could help me?
Thank you so much.