yashsingh1/xdaforums huggingface dataset:
[Galaxy S III General] :
...how to restore efs.tar ??
[Galaxy S III General] Mittel:
Hey guys,

Just to be sure I understand everything about EFS issues.

(First thing, EFS backup done)

Today I am on an EFS v1 baseband XXEMB6 with Temasek CM11 rom (thanks again Temasek for this rom!).

If I flash an EFS v2 baseband right now I should not have any problem, right? As EFS V2 basebands can read both v1 and v2.

And later, I can flash any rom without fearing anything, right?

I ask this question because I read on this topic some members who flashed v2 basebands and later could not get CM roms to work properly. So I am a little bit confused.
[Galaxy S III General] Lokin1:
here is the solution :D

Iv'e used twice and worked every time : once when my phone suddenly went brick after using odin to reverse samsung update to release stock and once after manually upgrade to kitt katt cm11 (lost imei modem not working)

http://xdaforums.com/showthread.php?t=1835931
[Galaxy S III General] Jalfrezi:
Doesn't cure the EFS issue my friend, you still get the failure warning after install - cheers for sharing tho
[Galaxy S III General] Jalfrezi:
I lost my EFS or should I say it became corrupted after I moved from cm 10.3 to cm 11 I hit the error 7 message

tried to move back to 10.3 with no luck and then all I get is either samsung logo or if I install archdroid I get the boot logo and no further.

I installed the latest 4.4 firmware via odin flashed fine but again boots to the samsung logo and sticks there.

question is even with EFS issue should the phone boot up ok ??

I've been flashing androids for ages and never encountered a complete fail could be the 1st any advice welcome

have a good day :good:
[Galaxy S III General] dandemonic:
Error 7 could mean outdated recovery version.

Afaik even with corrupt efs the phone should still boot, just won't connect to network.

sent via my CM11 Gnex
[Galaxy S III General] Jalfrezi:
fixed that issue installed the latest and reflashed with no luck

I guess the issue was trying to revert back to CM10.3 from a failed CM11, no idea on the boot tried everything. I'll leave it a few days and start again with a clear head :)

just bought a nexus 5 to get me out the poo with the wife seeing as its her's :laugh:
[Galaxy S III General] deepgrass:
Please add one more to the list " SA Manager (EFS, MODEM, TA backup & restore!)"

http://xdaforums.com/showthread.php?t=2582811
[Galaxy S III General] popmpopm:
nice tread i have question first have i9300xxemg4 with 4.1.2 and all thing work fine after root (and backup original rom) i flashed cyn 4.4.2 and 4.3 after I flashed all these different rom i saw must backup efs

but all work fine no problem with imei the question can restore my 4.1.2 ( original rom ) and he will have no problem of imei and if yes a efs of 4.3 cyn is same no ?
[Galaxy S III General] kramiel16:
thanks for this
[Galaxy S III General] stephsch23:
One oft the importend things i never erased the efs partition and that s the reason i never had no network problems Theres is a toll to recover efs partition in PC so you are able to erase everything because u can restore efs with Odin flash ? ???look At XDA developer news is tool originally build for note 3
[Galaxy S III General] maaadevil:
finally my s3 is back to life... thanks alot for your efforts guys.. i really appreciate it (Y)... i just flashed the K-December firmware and my imei and network is back... EFS v2 Basebands is reading EFS v2 folder...
[Galaxy S III General] pigstacho:
Thanks for your guide, EFS Professional did not work in my GT-I9300 for some reason but SGSIII EFS backup / Restore scripts executed nicely and now I feel in peace :good:
[Galaxy S III General] Mittel:
Please anyone. I don't want to do something wrong before flashing a new rom.

Thanks a lot (and happy new year!)
[Galaxy S III General] Iqbal Ansari:
After going through almost everything in this thread I have understood quite enough about efs issue but still I would like to confirm.

I'm on MH4 indian rom with MG2 modem ie efs v2 so i can easily flash ML2 4.3 rom over it. Question is can I downgrade from 4.3 ML2 to 4.1 MH4 without any issues as both of them are efs v2.

I will use ODIN. And I have backed up my efs from MH4 rom with ktool app.
[Galaxy S III General] f0xy:
guys,

is there any tool that can advise you which version of efs a backup is?

Thanks xx
[Galaxy S III General] S3forLife:
Hey guys I need your help, Last June 2013, i tried the new ultima rom v14 (based on XXEMG4) on my galaxy s3 i9300, and unfortunately i messed up my IMEI no and SN and I dont have an EFS backup, thus Not registered to network appears in my phone. I desperately searched the net for solution and did things I thought that could help but to no avail maybe because the problem before then is still new. So I went to a repair shop in our city to ask someone fix my problem. Luckily, I found someone that fixed the issue using a BOX. I dont know what is that called. So for now, everything is working fine and i am using I9300XXEMD3_I9300OJVEMC1_TUR Jelly bean 4.1.2 in my Galaxy S3 I9300.

So my questions are now:

1. If I back up my efs NOW, can I still use that to effectively fix my problem when I messed my IMEI no. again?

2. I read some posts before on what is the problem all about and it says the problem was modem and efs related and that I should wait for a new firmware/modem because EFS wont work on older modems anymore, so my question now is with all the newer firmwares out there including the J.B. 4.3, can I now SAFELY flash or manually update my phone with these nre firmwares through ODIN without losing my IMEI again?

3. As i have narrated, with the solution that fixed my problem, can I wipe factory reset without losing my IMEI?

I want to upgrade to JB 4.3 PLS HELP.
[Galaxy S III General] Iqbal Ansari:
Upgrade to 4.3 via odin and you wont lose you IMEI. Keep a backup of your current efs with ktool app from playstore, in case you want to downgrade in future.

Its not a big problem at all. Only issue is old modem doesnt work with new efs in 4.3. so you have to stay with new modem all the time.
[Galaxy S III General] S3forLife:
is it okay to do that even after the repair from the repair shop. ? will that not affect the normal procedure?
[Galaxy S III General] lidor546:
I want to install cm11 and I'm afraid that I deleted imei that is already deleted ....

And I use ARIZA Patch So should I change Rom?
[Galaxy S III General] Iqbal Ansari:
I dont think so. Just backup your efs and return to the same rom if something goes wrong.
[Galaxy S III General] lozgreen:
1st post please help if you can

Been using custom roms for a few years ( still have a I9000 with darky installed)

I have a i9305

Friday I decided to upgrade from rextreme 14.0 (4.1.2) to rXTREME.JB.4.3.v1.1 - I took a full nandriod/ Titanium before hand and during install took an efs backup.

Was missing some files from Titanium so went to restore 4.1.2 to redo the titanium backup. However thats when my network disappeared. Reading the various threads seemed to point to efs/nv corruption.

I also had some efs pro backups from last year ( they seem to have disappeared now). I tried these 1st - no joy. The efs backup from the aroma installer is in a .gz file - So i extracted these, deleted the contents of /efs and overwrote them. Still no network. Have tried several modems from here on 4.1.2 http://xdaforums.com/showthread.php?t=2010116 still nothing.

Found the threads about EFS1/EFS2 problems - so tried reinstalling 4.3. Installed ok still no network. Tried restoring EFS files again. no joy. Downloaded the Patched V2 efs modems and tried those - no luck

Downloaded a couple of Stock roms and installed via odin, still no network.

Have gone back to 14.1 (4.1.2) to try again - still no joy

Any suggestions welcome or is it a repair job?

Many thanks

Loz
[Galaxy S III General] abrahamjohn731:
Hi.

I had this problem last month and did a lot of flashing of stock roms and modems and nothing helped.

I had just a corrupted efs backup that could not reinstall with k tool or other tools but finally I have seen a post on xda about restoring imei, efs partition. It was about installing a modem, then save the efs partition, then change the imei folder from it with another imei folder... Etc but it did not make a lot of sense bcs if u lost your original efs that has the original imei no in it how come to restore it back??

But anyway I give it a try and in the description process I did not copy and paste the imei folder from the new efs partition but I took it with a root Explorer from my old efs partition and when I rebooted my phone I got my network back and imei number.

So if u made some efs backups in the past you should be able to restore it somehow.

Try first with k tool or there are some windows programs like Samsung toolkit, or others I have found on xda to restore the efs.

Try to find on xda as much as u can about restoring imei for s3 and maybe u find that topic I also used partially and succeed bcs I am not in my country now to give u the link.

There is also a Windows program u can download (youtube) to rewrite imei with your original one but my windows do not see the ports in device manager so neither the program so I couldn't use it.

If u will be still in trouble after I will arrive home I can give u all links.

But there is a guy from Poland that can restore your IMEI through Internet for 10e but only if your model do not need the special cable and octopus box. Some one recommend him on xda but again I do not have the link.

Just search a lot a u might find it. I think u might need your stock rom installed in order to succeed.

But stop flashing roms and modems, I do not think it helps..
[Galaxy S III General] S3forLife:
hi bro, i went for it. the flashing through odin was successful but i dont have a signal. It says "Emergency calls only". the IMEI and SN is intact though. I flashed the switzerland ML2 firmware (AUT-I9300XXUGML2-20131226214140of the JB 4.3.) Pls Help.

and 1 more thing I did not wipe data and wipe cache as I am coming from a Stock 4.1.2.

Should I wipe now?
[Galaxy S III General] Iqbal Ansari:
http://xdaforums.com/showpost.php?p=43946365&postcount=15

flash emergency zip from here if you are still on ML2
[Galaxy S III General] S3forLife:
How will I flash it? through odin or copy it to the external SD and then recovery mode?
[Galaxy S III General] Iqbal Ansari:
Flash it through recovery. Its a zip file.

If it still doesnt work one more thing you can do

In recovery do a full wipe including system.

Turn off device from recovery.

Flash your previous rom from ODIN.

restore your efs backup.
[Galaxy S III General] S3forLife:
I flashed it through the recovery mode. Installation was a success but still Emergency calls only.

What should I do now bro?
[Galaxy S III General] Iqbal Ansari:
Sorry bro but most probably you got your efs corrupted again. Try What I said in my earlier post.
[Galaxy S III General] S3forLife:
and that is what exactly again bro? IMEI and SN are still intact. Will wipe data and wipe cache change anything?
[Galaxy S III General] Iqbal Ansari:
Many people have reported that flashing stock regional 4.1 via odin and flashing back it efs backup have resolved the.issue.

As the path for efs has been changed in 4.3 so I think a clean install might help.
[Galaxy S III General] S3forLife:
domeGi must

I doubt flashing back the efs is an option right now. Is not it that I should restore only the EFS if it is backed up by Ktool only if the IMEI went unknown?

Is the flashing of the emegency zip really takes some time?

Because when I flashed it when i was still in ML2, it is lightning fast and now that im flashing it in a JB 4.1.2 MH1. It is taking some time. and 1 more thing while flashing it says E: Verification signature failed. Help Bro
[Galaxy S III General] Iqbal Ansari:
Did you try to restore it with ktool on 4.1. The backup efs should be of 4.1.
[Galaxy S III General] S3forLife:
The back up was made when I was still in 4.1.2 with Ktool. I have not restored the EFS yet using Ktool because it says there restore only when the IMEI is lost or corrupted and as of now, IMEI is still intact. What should I do next?

Are you online in your facebook? can i Just contact you there for faster conversation? PLS
[Galaxy S III General] lozgreen:
Also

Also my Serial no is fine , imei is null/null and baseband is unknown.

The contents of the efs folder appears to be an exact match from a backup taken last Sept.

So it my problem more likely to be EFS1 /EFS2 based than a corrupt IMEI?
[Galaxy S III General] Amitayy:
I heard after the amendment of the IMEI and S / N I can not update version.

And make the settings can be reset through without problems?

I9300
[Galaxy S III General] Aditya Keri:
I'm running 4.1.2 (India,unrooted) with all the latest updates except 4.3.

I want to now flash 4.3 ML2 using odin,

Will it create any efs/imei problem ?!
[Galaxy S III General] BennyZars:
lets assume that your 4.1.2 has EFSv1. There will be no problems when you update it to 4.3 but your EFS will become EFSv2. A problem will occur if you choose to downgrade to 4.1.2 with EFSv1 your IMEI will be corrupted and you will lose your network. but there is a 4.1.2 with EFSv2 like the 4.1.2 with mg4 modems which you can choose if you want to go back to 4.1.2. You will retain your IMEI. but you may lose your Serial Number just like mine (It became 00000000000) but i didn't see any problems when i got that serial number.
[Galaxy S III General] Aditya Keri:
Alright, two quick questions :

1) How do I know which efs version if my phone running ?

2) So upgrading from 4.1.2 is not at a problem for efs but ONLY downgrading might be a problem ?
[Galaxy S III General] BennyZars:
i don't know how to specifically look at what EFS version a phone has but we can see our Baseband version in the "about device" in the settings

If your Baseband version is not 19300XXEMG4 and lower for example 19300XXEMC2 (Just look at the last 3 figures) then there is a very high chance that you have a EFSv1.

for your number 2 question, my answer is Yes if it is regarding to EFS issues.

But please ask for more infos here and read more infos from various topics here. Im also a newbie too.

I forgot: Please make a EFS backup if you want to upgrade your firmware.
[Galaxy S III General] SariKanaryaAli:
one quick question my IMEI is *********** / 01

stars are random numers but i have /01 in the end is my imei corrupted? Because sometimes i loose network and see not registered message thnks
[Galaxy S III General] berdey:
To be safe, just back the efs/imei information by ktool since using the beta 4.4.2 ROM.

Thx a lot
[Galaxy S III General] Gastozz:
HI all.. I was on 4.1.2 stock and I have backed up EFS folder. Now I run CM10.2 and it's android 4.3.1. So I can't install stock firmware again or any other ROM under 4.3 version? :o
[Galaxy S III General] SariKanaryaAli:
you can via odin
[Galaxy S III General] dzjoepy:
Dear rootSU,

I see there is a new firmware for my phone and country:

But currently i'm on a UK firmware because i lost my IMEI. Am I able to flash the new firmware for my country and phone on my phone now? If so, please link me a tutorial how to correctly do this. Thank you !
[Galaxy S III General] stick2one:
i have problem with sms sending failed and mobile data not working. but i can receive txt and calls. i can make a call only txt and mobile data problem :confused:
[Galaxy S III General] harshalgupta826:
4.3 upgrade

Hi. I had the same Factory mode problem which I solved using the terminal emulator solution. Now since my gt-i9300 is rooted and there is an official 4.3 update available for my country. How should I proceed with the upgradation? Flashing the 4.3 rom with ODIN will bring back the efs issue or not?
[Galaxy S III General] Amitayy:
Bootloop after install mod with recovery

That imei repaired before with box what I do ??

I have a computer backup of the efs after amendment with box
[Galaxy S III General] howtodignose96:
EFS Corrupted

I have my I9300,it seems to show the IMEI number when i am on EFS v1 modems.I tried updating to the newer firmwares which will upgrade my EFS to v2 such as the EMG4 or the 4.3 ones,however, my IMEI turns bad and i get no network. I am just wondering if anyone else is experiencing this,will i be stucked with an EFS v1 forever?
[Galaxy S III General] maxniper:
I'm at the same stage like you, i'm waiting for official 4.3 for my phone and network and then i will go to the seller to be solved, it has already been there but i think that they made a bad repair because i can't upgrade my EFS to V2. I have to use China kernel each time i want to test a samy 4.3 rom. it's annoying using it without a custom kernel.
[Galaxy S III General] howtodignose96:
ASD

Hey, may i know where u get the chinese kernels from? Is the kernel stable?

Also,may you enlighten me about your seller resolving your EFS issue?Do you still have your warranty on your phone? I wanna know if samsung will give me a repair for free since they did a bad repair when i sent to them.
[Galaxy S III General] maxniper:
here is the one i use with modem efs v1 with init. support, is stable for me.

here on Portugal i have 2 years guaranty and i have only more 5 months, i hope that the upgrade to 4.3 before that time :)

Its a shame that we don't have boeffla kernel with Ramfs of chinese kernel
[Galaxy S III General] kev1njenius:
[MENTION=2872010]rootSU[/MENTION]

thank you for your information!! it helped me a lot!

but now the problem is :

i want to unroot my phone, but everytime i unroot it, i cannot call (not registered network) unless i root it again and flash the MG4.

any ideas to have a working unrooted phone?

cheers
[Galaxy S III General] dabyd64:
I am not having any problems, but since I flashed MG4 modem (months ago) my S/N became 000000...

Then I was pretty noob about S3, and there were no threads yet about the new efs format problems, so I didn't backup. In fact, I did the backup AFTER that :good:

I didn't even notice that upon I changed the rom, and checked the IMEI/SN before flashing. Saw that and restored the copy, but s/n still was 0's.

Since then I flashed MJ9/MK6 with new modems, still no problems or anything related to calls, send sms, use 2G/3G data...

Anyway, I'd like to kown if this specific issue can be fixed easily by myself, or if anyone has experienced this.

It is very strange that everything works perfect:silly:

In any case, I can sleep nicely :)
[Galaxy S III General] zakaria9:
very good

i flash zsmg2 rom this is efs v2 hongkong but for persian language is jplk2 efs v1 then i have not basebond

i copy tee folder from zsmg2 to jplk2 then i have zsmg2 baseband

how to restore to efs v1 then flash stock gb rom
[Galaxy S III General] GabrielSousa:
a friend of mine dont have the nv_data.bin and no nv_data.bin.md5 and no backup

any solution ?
[Galaxy S III General] depecheguevara:
when I try to downgrade from 4.3 england or turkish rom to 4.1.2 turkish rom (xema5, ef2 modem) phone gives me no registired to network error. how to fix it?
[Galaxy S III General] 78cortina:
FFS dude did you even read the fing op its all in there if you could be bothered to read. It gives you all the fing info, apps and links. Finally FFS search the fing thread this question has been asked and answered countless times.
[Galaxy S III General] kissme99:
Hi there. Today I updated my i9300 from 4.1.2 to 4.3 via odin. I don't know why but I have a known "no register data" problem. And my IMEI DIDN'T CHANGE. In the settings there is a signal strenght -87dBm 13asu. So, what can I do? I want to call my mom..
[Galaxy S III General] shoames:
I'm on xxumef1 (old version of efs supported) and I'm aware of the issues if I flash the latest MGX series of ROMS. My question - is it really worth upgrading to the latest MG series? I know that it is personal choice, but still any pros like better RAM usage/graphics fluidity enhancement/better network reception?

Any suggestions would be highly appreciated. Thanks!
[Galaxy S III General] danarama:
Not especially.

You may get better signals with the modems, so worth trying those without the roms - doesnt alter efs
[Galaxy S III General] foggydisaster:
i wanted to ask a question. I am really confused with all this /efs stuff. if my baseband is MC2 (I9300XXEMC2) I assume i still have old format of efs? I have a backup of my efs (made literally few seconds ago:P) And if i install any mg5 roms and flash different rom then ill be able to use mg2/4 baseband OR just restore my old backup, am i correct? Just want to make it clear to me. Thanks in advance!
[Galaxy S III General] danarama:
If you flash the MG4 or MG5 ROM, it will alter your efs format. This means you can only use the MG2 or MG4 basebands that come with those roms (for now). If you wish to go back to an older baseband, you must restore your efs backup.

Flashing the basebands without the roms does not alter efs.
[Galaxy S III General] foggydisaster:
Thank you for reply. one last question, basebands are ROM independant, right? Means its safe to flash MG2/4 basebands on older base roms...?
[Galaxy S III General] danarama:
Correct, although non-rooted users would generally only have a baseband that came packaged with a ROM.
[Galaxy S III General] Pitbull_Raven:
Hi guys. A little help please.

Seems my efs is messed up. Since some 7 hours ago, all I see is the "emergency calls only" signal. Checked the /efs folder and it was empty. My IMEI is now also 0049...

First thing I tried was to unpack an efs.ext4.win file I have from last year. Copied the efs folder to /. Reboot, but nothing.

Tried an efsbackup.tar.gz created by some ROM's installer script. Same result. Still nothing.

Out of desperation, flashed my carrier's stock ROM via Odin in Download mode. Went ell, but still, emergency calls only.

What am I missing here?
[Galaxy S III General] kangerX:
Are you sure that the efs backup are prior to efs screw up. I suggest

Go to stock 4.1.2 , modem ! Delete every content from efs folder , copy content from backed up efs to phone's efs , reboot.

PS. Use root explorer

sent from the state where marijuana is NOT illegal !
[Galaxy S III General] Pitbull_Raven:
Yes, positive. Creation date 15-05-2012
[Galaxy S III General] Golly31:
I had the same problem ..flashed a stock rom via odin ..same problem ..root it again ..flashed xemg4 modem and worked like a charm . It also worked with xemg5 modem, both can be found using search tool . This happens after flashing stock or custom rom based on xemg4 .
[Galaxy S III General] danarama:
There is no MG5 modem. The MG5 rom comes with the MG2 modem. Both the MG2 and MG4 modems are linked in post 1 of this thread.
[Galaxy S III General] Golly31:
My bad ..i was referring to the mg5 rom .. by the way ..thanks for the modems and explanations ...yesterday I had a mini heart attack when I soft bricked my phone :))
[Galaxy S III General] danarama:
Yep, can be scary when things take an odd turn. Most important thing when something unexpected happens is not to panic. Don't try and fix the issue until you have read and searched loads about it
[Galaxy S III General] DSA:
ive linked this thread in the first post of my rom thread (Just under download link) - very relevant and needed

Cheers RootSU :good:
[Galaxy S III General] danarama:
:) Thanks.
[Galaxy S III General] islandboy_2000:
I have the same problem. I have several efs backups that are in .tar.gz format on my external sdcard but I don't see any .img files. I'm trying to restore one of them because I do indeed have the "emergency calls only" popping up and upon checking, I do indeed have the 0049 imei. I have tried ktool etc. and it keeps telling me that there are no files found. How the heck do I restore from one of these 6 efs backups thatI DO have? :confused:
[Galaxy S III General] danarama:
Have you identified why you have it? Did you go through the baseband issues?

tar.gz - open with a file explorer, put in place using root permissions