yashsingh1/xdaforums huggingface dataset:
[Galaxy S III General] libbycm:
I'm not sure the function of the efs partition is understood..

I have a vzn note 2 sch-i605 that I was trying to return to stock and royally hosed in the process. Tried flashing latest ota with odin and phone thought it was encrypted and kept prompting for pw at boot even though it wasn't, so I couldn't get phone to boot. So, I went into odin and used the scary nv erase option and flashed again. This fixed encryption problem but baseband showed up as unknown, no imei, etc. Couldn't connect with qpst either no matter what I did (diag mode, usb settings, etc) So I went to odin again and flashed again, this time doing nv clear and efs clear options... no difference. I had no efs backup so figured I had nothing to loose before sending to Samsung for repair.

So, at this point I had a phone that I used nv erase, re partitition and efs clear options on. Clearly I am insane because one should never do that, right? :) well in a last effort last night, I rooted phone, installed patched bootloader, etc, because I wanted to install original stock fw release on phone instead of latest ota. So I did this, once again selecting re-partition & efs clear options.. and boom..phone was magically fixed!! Radio worked, imei showed up, internal sd showed up again which was gone previously, and I was able to activate! I then used odin to flash latest ota (but did NOT use re partition, nv clear or efs clear options this time) and all continued to function.

So the moral of this long winded post is that I was able to use all of the scary odin options with NO efs backup and restore my phone to a working state. I think original Rom flash fixed this bc it had param.bin as well as a few other stock files in it that phone was missing I suppose.

All of that said, I think the efs partition may cache certain config data on phone, but it's not but so critical as imei, etc is clearly stored in nv ram elsewhere in phone. My brand new note 3 doesn't even have nv_data files on efs so that even further reinforces that...

Thoughts?
[Galaxy S III General] danarama:
I'm sorry, I cannot comment on other phones.
[Galaxy S III General] libbycm:
Phone should be irrelevant..this probably holds true on any Samsung device, probably other makes as well.
[Galaxy S III General] JJEgan:
We already know that the layout is different and may well be a reason for some more prone to EFS .
[Galaxy S III General] maskoforos:
Solution

So if i just flash mg4 modem will do the work ?
[Galaxy S III General] zscomp:
Very good reference :good:
[Galaxy S III General] Gorgtech:
Did you flash the custom recovery first, as described in Philz´ thread and flashed the attached package through it ? I´m trying to help you but unfortunately you´ll have to read and understand the guides.

The phone status should be the last thing to worry about since this can be changed anytime. Did you perform what you´ve been told?

- install Philz´ Touch Recovery ( through Odin )

- copy the mentioned flashable package http://d-h.st/RRR on your phone

- install it through Philz´ Touch Recovery and check if you´re able to perform telephone calls again

Dial *#06# and check your IMEI.
[Galaxy S III General] Hafiz.:
i have done all the steps

butt no changes ....
[Galaxy S III General] danarama:
I wont comment on "probably" sorry.
[Galaxy S III General] libbycm:
Ok..well you should probably make sure you are spreading factual information before self declaring yourself the king of efs ...
[Galaxy S III General] danarama:
I did no such thing. This thread is in the i9300 / i9305 forum and I can only state to any degree of certainty, facts directly pertaining to these phones. I can not talk with any authority on devices like yours which I have never even heard of, let alone looked in depth at the /efs partition.

All the information in this thread is factual. If you know the information for your phone, create your own thread. Don't go throwing around accusations and insults because i didn't buy YOUR phone and post this thread in your forum.

The fact is every phone is different and giving advice to someone with a different phone can have them cause a brick. I will not take pot-shot guesses trying to "fix" the phones of people who have different phones.

Jeez, some people.
[Galaxy S III General] danarama:
Correct
[Galaxy S III General] raj_p:
downgrade

I have a question. I don't have a backup of my efs folder. Now I am on XXEMG4. If I flash to an older rom and after that flash the XXEMG4 again, will my phone work again?
[Galaxy S III General] danarama:
Yes you have to stick with mg2 or mg4 baseband
[Galaxy S III General] dzjoepy:
No network

Hello,

I've rooted my my phone with this "CF-Root-SGS3-v6.3" root (from: http://www.telefoonrooten.nl/samsung-galaxy-s3-root/ (It's in Dutch, because I am Dutch!)). After a while I decided to try out some custom roms. First I triend Pardus HD (bassed on XXEMG4 (4.1.2) from: http://xdaforums.com/showthread.php?t=2142430) and then Omega v43.9 Jelly Bean 4.1.2 (from: http://xdaforums.com/showthread.php?t=1663656). Then I unrooted my phone (by this tutorial: http://xdaforums.com/showthread.php?t=1710613), but when I was done, I had nog network any more... I've made a nandroid - I think it was called that - back up when I rooted the first custom rom of Pardus. Before that I've also made a backup with Kies, But know I have no idea how to get my network back and I'm afraid the backups are lost in the (un)rooting because all the old maps etc. are gone on my SD... I read something here about to root the Pardus rom again and something about the MG2/4 baseband packages. The problem is that I'm scared to root Pardus again and i don't understand the thing about the MG2/4 baseband packages. I have know the official firmware on my telephone and I just rooted with CF-Auto-Root (from: http://xdaforums.com/showthread.php?t=1957273).

I hoped any of you guys could help me how to get my network working again. I've got the 0049***IMEI right know... Thanks!
[Galaxy S III General] Pantherx12:
I have a efs back up in 4ext.win format. How would I go about restoring it? ( used twrp to back up, how ever my backup does not show in twrp restore)

Is it still possible to manually browse to the efs folder?

*edit* found the /efs folder, put all the files in there and got my imei back.

How ever I cannot connect to networks, any clues?
[Galaxy S III General] kishanthj:
This post saved my S3.

So before I mess it up again. I followed the file and flashed the MG2. Can I now go ahead and flash the rom with the MG4 modem or should I create a back up of the EFS and then do it?

Thanks alot
[Galaxy S III General] danarama:
The baseband has nothing to do with root. Pardus is mg4 so now you MUST use mg2 or mg4 baseband for ever (until new basebands are released). Its as simple as that
[Galaxy S III General] danarama:
Not really. Its best to restore using what you used to backup. Maybe best to ask in twrp thread
[Galaxy S III General] danarama:
Its always worth taking a backup. If you used my package in post 1, you already have a backup

If you have no backup before flashing mg4 or mg5 rom, you can only use 2/4 baseband
[Galaxy S III General] dzjoepy:
Oke, thank you for your quick respons. Are there any ways to use a stock (official) rom/firmware? If there is, could you give me a link or tell me how to do it. I would like to use my phone like there has not been messed around with any kind of roms or something, just like straight from the shop.
[Galaxy S III General] danarama:
You'll have to flash the stock MG4 ROM using Odin. You cannot use stock ROMs that are any older than that.
[Galaxy S III General] jonpenn101:
I got ya buddy. Already thought of that one, I've been flashing for 3 years and have picked up all the tips and tricks. It is now on a stock ROM flashed with Odinand cleared the flash counter with Triangle Away! Gonna call Samsung Support this morning!
[Galaxy S III General] kangerX:
Cool good luck. :)

sent from the state where Marijuana is NOT illegal !
[Galaxy S III General] dzjoepy:
Okee, I would like to give that a try, but could you please help me by telling which MG4 ROM I need? And when I know which one I need to use, I have to unroot my phone again by the unroot tutorial I used earlier (see my first post in this topic), am I right?.

When I unrooted my phone I used this one from SamMobile:

Now I see this is a MG2 one, but I don't know which MG4 one I need to choose. I have the GT-I9300 Galaxy S III and I am from The Netherlands. Is it possible to somehow use the ROM of another country or open ROM which has MG4 or something? Or do I need to wait till there is an MG4 version for my country?

Thank you very much!
[Galaxy S III General] danarama:
MG4 is BTU (UK) or MG5 from India come with MG4 or MG2 basebands, all which should be fine.
[Galaxy S III General] emptyragnarok:
I have backup of EFS made by aroma..it's a TAR file How do i restore it? Actually I have two files 1. efsdev-mmcblk0p3.img and 2nd.efsbackup.tar which one i can use and how do i use it any help?
[Galaxy S III General] kangerX:
First delete every content from efs folder from your phone then Unpack efsbackup.tar with winrar on PC and copy contents inside from efs folder that you extracted to phone's efs folder and reboot. Done.
[Galaxy S III General] emptyragnarok:
That didn't work it didn't allow me to delete anything :(
[Galaxy S III General] kangerX:
Use root explorer and don't try to delete whole efs folder. Enter efs folder then mark all items then hit delete ! I have restored it same way for like thousand times now
[Galaxy S III General] emptyragnarok:
oh i tried to delete the folder :( anyways i got it restored using philz recovery and an img backup of my EFS
[Galaxy S III General] Hafiz.:
i have galaxy s3 i9300

i update it through KIES 4.1.1 to 4.1.2

and now my IMEI 0049XXXXXXXX

and serial number 00000000

please tell me very simple way

if possible then any video link

or simple step by step

please sir :)

pleaseeee

:(

thnx
[Galaxy S III General] danarama:
This thread is not about serial number. Serial number issue is best dealt with with a repair by a professional

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[Galaxy S III General] diegonnc:
A quick question about efs and modems, will i lose network if i use a 4.1.2 modem on a 4.2.2 rom ?, is it compatible ?. Thanks.
[Galaxy S III General] danarama:
4.1.2 / 4.2.2 not relevant. Only EFS v1 / v2 is relevant

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[Galaxy S III General] ch4qr1:
My question isn't belong here but i want to ask you friend. I have got i9500 i flash stock 4.3 firmware but not booted. When i open stock recovery it says efs mount problem ( invalid argument ). I have got efs tar backup. Can i solve this problem with efs backup ?
[Galaxy S III General] danarama:
Possibly. Depends what's in the tar, but I don't know i9500

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[Galaxy S III General] ch4qr1:
/efs folder in my tar.gz backup. How can i restore my backup ? Have to root and which commands ?
[Galaxy S III General] danarama:
Adb should do it once extracted. See post 1 but AT YOUR OWN RISK because EFS may be different. Double check them with people using your device first

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[Galaxy S III General] diegonnc:
Okay i use the rom XXELLK4 along with the modem XXELKB , i guess is EFS V1. And i flashed the latest 4.3 . and i got both S/N and IMEI ,even though i get full signal bars :eek:, i get "only emergency calls", and cant register to any network.So i was wondering if i flash 4.2.2 and restore the IMEI and modem (XXELKB) with my backup, that should make the network working ? . Coz i tried flashing 4.3 and restoring my efs backup along with the modem and i get no signal no IMEI and no S/N, hope its not the same with 4.2.2 .
[Galaxy S III General] danarama:
4.2.2 is EFS v1. 4.3 is EFS v2. Now you must use EFS v2 modems. All covered in post 1.

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[Galaxy S III General] ddaflorez:
Little problem here... i cant restore my imei back up on efsv2 (neither MG4 or MH1) i backed up with hc ktool (efs.img) restored img from sdcard where the back up is supposed to be but nothign happens... it works if i patch the modem with Ariza... Can someone explain why ?

Enviado desde mi GT-I9300 usando Tapatalk 2
[Galaxy S III General] acc_kareemomar:
Imei and serial number fixed by spt box

I fixed my imei and serial number by spt box and now they are ok but i still have emergency call only ,please help me
[Galaxy S III General] JJEgan:
READ this thread .
[Galaxy S III General] schetz:
sorry,moved to Q&A where it belongs :)
[Galaxy S III General] marbedMB:
rootSU really big thanks.

I've encounter yesterday "no network" issue after flashing S4 revolution v8.0 ROM and used Your EFS V2 baseband zip and it bring my phone back to life. My emei was 0049*** and now is correct. Thank You again.

Thumbs up all.
[Galaxy S III General] giudicealdo:
Hi folks.

I just flashed WanameLite 7.2, based on the lastest leaked FW (MJ3). There are a a couple of well-known issues, hence I'd like to get rid of it asap, as long as I can rest assured I'm not bricking my i9300. :)

Can I wipe everything and then flash CM 10.2 (or another AOSP rom) without side effects?

I have a efs backup, stored on my external SD card and created using kTool when I was running CM 10.2 M1 with baseband ME7.

In addition I have a rom-manager backup always of CM 10.2 M1. Can I simply restore it?

Thank you for your help.
[Galaxy S III General] west421:
Deleted.
[Galaxy S III General] danarama:
Yes will be fine.

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[Galaxy S III General] Mattyboii87:
Hi all. First off I do not have access to a Z3X or NSPRO box. Although I have had twice had my phone fixed at my mates shop.

What it is is that obviously there are issues with the efs/IMEI corrupting. I have since fixed this sort of at home on the PC via USB. This was done with flashing 4.2.2 via ODIN and then flashing a patched modem via CWM.

Upgrading to 4.3 or flashing 4.1.2 causes efs/IMEI corruption and although I have many backups via KTool, PhilZ advanced recovery etc saved as .img, .tar. gz files. When I restore the backups it either doesn't have any effect or it restores but the baseband doesn't work so I have to use a patched modem, then callers cannot hear me on the phone.

I flashed 4.3 last night, restored the efs via backups various ways and it stayed corrupt using the generic IMEI. This was fixed via NSPRO. Something I don not have access to regularly. My phone is now running 4.2.1 but I want to get onto 4.1.2 realistically.

Any ideas?

Thanks.

EDIT: I also know about the old efs and new structures
[Galaxy S III General] side_flip15:
Hi. I had messed up my S3 a week ago before I saw this thread. My IMEI turned to 0049, Flashed a stock ROM via odin resulting to serial to be 0's.

To make this short, I sent it for repair. Now I have my IMEI back but my serial number still shows 0's, I don't know if this is unusual but I have a working mobile network.

My question is:

Is serial number anything to do with efs folder? (I know this is not serial number thread, just want to give it a try:D), I want to upgrade to a newer version that is why I want to confirm if flashing will affect on IMEI considering my serial number is 0's -which doesn't really bother me since I have a network connection working.

baseband version : MB1

Firmware: MF6

Never tried Ariza patch.

Thanks in advance:)
[Galaxy S III General] danarama:
If your serial is 0, you need repair or ariza

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[Galaxy S III General] side_flip15:
Thanks. Will try Ariza patch.

Another question, is the 0 serial numbers affect my efs back up? I mean if I messed up again can I restore it without any problem?
[Galaxy S III General] danarama:
No idea about serial number. Sorry
[Galaxy S III General] JJEgan:
This forum owes you a big thanks for all your hard work and concise guides .
[Galaxy S III General] heathenasparagus:
Hi,

using N7100 with the sn0000 issue fixed by arizapatch.

I am using the latest non-MG modem version of Wanamlite. now am afraid to upgrade to the leaked 4.3 rom

Does upgrading to the latest leaked rom in the Wanamlite version destroy my efs ?

Since MG modems can read both efs v1 and efs v2, why cant I just upgrade to 4.3, then restore to previous efs v1, and all will be well?

Thanks!
[Galaxy S III General] gauridavin:
imei still 0049

i've used ktool to restore my old efs backup, but my imei wont change and still 0049.

help mee
[Galaxy S III General] JJEgan:
Read post one .
[Galaxy S III General] aliw32619:
help

So flashing ultimarom v15 will fix my IMEI problem? Cuz I flashed 4.3 jb rom MJ9 baseband and still I got a problem with IMEI
[Galaxy S III General] GreatVortex:
Flash the emergencyzip from my signature or the first post.
[Galaxy S III General] manjumohangh:
Hi All Great Guys on the forum, Please help me. I have a peculiar problem. I had "not registered on network" problem and as a noob, tried everything but understood less, so gave it to service center. They did something and I got my network back.

Now the problem is, I cannot install any ROMs that are later than XXEMG4. Not even stock roms, they are simply not able to change my EFS partition to V2. I even tried 4.3 stock as well as custom roms (through ODIN also and recovery), but waste, not able to get in to network.

Any idea what could be the reason. or any procedure to manually change EFS v1 to EFS v2??

I really cant wait to try new ROMS :) Please help....

Thanks in advance....
[Galaxy S III General] ic3angelxx:
Hey tnx.....i tryed changing the basemodel to V4 and iti worked....i was coming from 4.3 stock to 4.1.2 stock...and i could not connect to the network....your method saved me..TNx alot RootSu...you rock!!:good:
[Galaxy S III General] GreatVortex:
On what baseband do you have signal?
[Galaxy S III General] chitzin12345:
N7100 IMEI null/null and baseband Unknow ...please help me...

I have N7100 DN3 V1 install but network no signal IMEI null/null and baseband version Unknow problem ..How can do it ..i try 4.1.2 downgrade doing.not back imei.again leaked 4.3 install not back imei and baseband ...

Please.. someone helps

How can do it.....

---------- Post added at 04:19 AM ---------- Previous post was at 04:07 AM ----------

I have N7100 DN3 V1 install but network no signal IMEI null/null and baseband version Unknow problem ..How can do it ..i try 4.1.2 downgrade doing.not back imei.again leaked 4.3 install not back imei and baseband ...

Please.. someone helps

How can do it.....
[Galaxy S III General] manjumohangh:
Thank you for replying.. I get signals on EFS v1 modems... I use iHackers ROM with older than XXEMG2 modem. Now I am on PACman ROM with Ii300XXLG6.
[Galaxy S III General] GreatVortex:
Did you try to flash 4.3then flash an efs v1 modem?
[Galaxy S III General] maxniper:
I have the same problem and i have tried and no chance, imei is at 00049....
[Galaxy S III General] Rash732:
Hello

Actually I update my s3 to 4.3 from 4.1.2 now I facing many bugs I want downgrade my device ppl said if u downgrade flash via odin u will lose imei and no network ?????
[Galaxy S III General] GreatVortex:
And with the emergency zip?
[Galaxy S III General] Rash732:
Sorry ?
[Galaxy S III General] maxniper:
same thing
[Galaxy S III General] ventarx:
so desparate :(

Hello guys

I was happiliy using XXEMG4 poland rom. Everything started updating my I9300 with 4.3 official roms. First i flashed UK 4.3 rom then flashed 4.3 china Rom, with these ROMs i have my IMEI and no problem was present. After that i downgraded to 4.1.2 July XXEMF6 rom and my IMEI was gone and i didnt have a back up of the EFS folder. at this XXEMF6 baseband i flashed xxemg4, UK 4.3 and China 4.3 modem file and imei was still generic, at china 4.3 modem my imei was null / null. I have flashed xxemg4 rom to my phone and flashed the modem files mentioned above and still nothing. im so desparate now, what shall i do to solve this?

Thanks for your understanding :crying:
[Galaxy S III General] ventarx:
Well i read it and i understood that my efs is format changed, so i installed xemg4 rom and flashed efs2 modems from the file uploaded as described and nothing happened, i dont have back up of my efs, what shall i do?
[Galaxy S III General] manjumohangh:
They said it wont recognise EFS v1 modems.

Can I restore my EFS v1 backup to EFS v2 after flashing latest modems, say 4.3?
[Galaxy S III General] GreatVortex:
Try to flash 4.3 than efs v1 modem then restore efs v1.
[Galaxy S III General] jforme:
I9300BUUGMJ3 modem

I was using DDLJ1 modem from last year and yesterday flashed I9300DDEMG2, every thing was fine. But tried testing it by flashing back LJ1, modem could not read EFS V2 as expected and then flashed back I9300DDEMG2, every thing is fine again. Now I have flashed I9300BUUGMJ3 and every thing is fine, will continue to monitor the battery life, data speed and signal strenght and report the same later. I am still on SlimBean 4.3.1 Build 2 while doing this test.
[Galaxy S III General] stefan.slavici:
No network in CM11 nor OMNI 4.4

Hi guys,

I just recovered from an IMEI "loss" after flashing many ROMs.

I had an EFS backup, a tar.gz file (can't remember on which occasion made it)

Didn't work with kTool- it didn't recognized it; I managed to extract from that tar.gz

file an EFS folder which I pasted with root explorer over the efs folder in the current ROM

and luckyly I got my IMEI back: now I have network on my ragzdogs S4 Revolution 9.1 ROM.(MG4)

Mi IMEI and serial match those from the phone's label and all OK. BUT...

If I flash Tema's CM11 or OMNI 4.4 ...again no network !!!

Under Settings / About dev/ Status I see the right IMEI but a WRONG Serial (could it be in hexa or something ?!)

What is wrong ?! What should I do to fix it ?

Thanks for support!
[Galaxy S III General] TEOKARAFOU:
no network,but i have imei

hello guys,i have a s3 ,i installed neat rom with 4.3 and then i had a problem i was conected to the network and when i made a call it didnt work.

i flashed the xxemg4 modem worked then i installed the s4 revolution 9.1 but i had the same problem i installed again the xxemg4 modem but it not works,i flashed then a 4.1.2 firmware with odin,but i had the 00499******00 imei problem i flashed a 4.3 rom i had back my imei,but i can make calls

i made a efs backup,but i cant restore i,its a tar.gz that the neat rom made before flashing,but i cant restore it.so any help guys

thanks for your time
[Galaxy S III General] Gorgtech:
You can try to unpack the tar.gz archive in a folder and simply copy the content in the EFS folder with a root explorer.
[Galaxy S III General] TEOKARAFOU:
thanks for the reply,i think this is dangerous?

also i can connect to my network but i cant make calls :(

what is the explanation of this :(
[Galaxy S III General] Gorgtech:
Have you checked if your IMEI is still there or maybe your EFS data is only partially damaged?

Dial *#06# and have a look at the IMEI ;)
[Galaxy S III General] TEOKARAFOU:
my friend i have the imei ,but i have the network problem :(

i have also the SN,i cant understand the problem :(
[Galaxy S III General] JJEgan:
You need to read the faqs and guides .

Set your APN correct Modem and CSC for your network .

Or pay for a service repair .
[Galaxy S III General] west421:
Try to read this tread: post 968

http://xdaforums.com/showthread.php?t=1918601&page=97