yashsingh1/xdaforums huggingface dataset:
[Galaxy S III General] kangerX:
[MENTION=2872010]rootSU[/MENTION] and others ,

guys i'm in trouble , i lost my imei and the classic "No service" error is haunting me,

i do have the back up efsbackup.tar.gz and efsdev-mmcblk0p3.img.gz in sdcard but how do i restore (the easiest way ? btw i have no idea by what action these backups are created , they were just there when i looked) plus, do i need to get back to stock before restore ? currently on a 4.2.2 rom . Thank you
[Galaxy S III General] JJEgan:
Try

http://xdaforums.com/showthread.php?t=1308546
[Galaxy S III General] danarama:
I've linked 3 apps in post 1. One of those should help
[Galaxy S III General] Rox598:
So how do I do that with your zip in the OP? Flash PA then flash your zip and choose MG4? I'll have to do that for every ROM that's not MG2/4 I don't mind like as long as I can
[Galaxy S III General] kangerX:
Yes , yes , yes ↑

sent from the state where marijuana is NOT illegal !
[Galaxy S III General] danarama:
Aosp roms don't come with modems so they wont change it. If you flash a samsung based rom, it may or may not come with a modem. If it does and it is not mg2 or mg4, flash the zip in the op choosing mg2 or mg4...
[Galaxy S III General] Rox598:
Ah brill I just wanted to check as I did a search and saw people did in some cases loose the efs when installing it but I'll give it a wirl and hope
[Galaxy S III General] rraaka:
sorry to trouble but i found myself in a situation where both mg2 and mg4 basebands failed to give me signal.

i had flashed ultima shiva 14.0.1 and had chosen stock kernel and mg4 modem in aroma. i was coming from omegas 43.9.

any advise please ? thanks.
[Galaxy S III General] PilgrimToHyperion:
Did you try a custom kernel eg. Boeffla as recommend in the thread?
[Galaxy S III General] rraaka:
i did read the OP and last couple of pages but it it must have escaped me. ill try next time. i always have a boefella kernel on my sd card.

now im on omega 43.9 and i have signal. BTW how can i tell which kernel i have ? its stock and named like this - 3.0.31

1292854 dpi [MENTION=271177]dell[/MENTION] etc etc, some of the aromas just write 'stock kernel'.

baseband mg 2

thanks for reply
[Galaxy S III General] danarama:
Omega has the stock kernels. The ones that were built on "dell" are stock.

Kernel is nothing to do with any of this
[Galaxy S III General] PilgrimToHyperion:
Not sure of the technical details behind it, but see http://xdaforums.com/showpost.php?p=44938076&postcount=14344 . There are multiple references in the thread about installing a custom kernel with UltimaRom to solve the no signal issue encountered in v.14.x
[Galaxy S III General] danarama:
I stand corrected. Must be a bug in ultima rom then. Nothing to do with this thread in that case.
[Galaxy S III General] PilgrimToHyperion:
Kind sir, I thank you from the bottom of my heart!! I used your zip and installed mg2 and all my signal problems dissapeared!! Must be better supported on the network here in this area.

Your thread mentioned here: http://xdaforums.com/showpost.php?p=44941904&postcount=14346

Thanks!
[Galaxy S III General] rraaka:
rootsu, i dont want to be argumentative but it seems kernels do play a part ...choosing boeffla kernel in the aroma solved my signal problem , the rom and modem remaining constant.

the first modification of efs format is done by the respective kernel---- but i cannot specify...i wish we could make a chart for the right combinations, some posts at the Note 2 forum pinpoint the issue. many there still continue with their old efs format by flashing the newer roms but before booting they flash the Persues kernel.

changing the modem when one has no signal only helps to read the new/old format of the efs partition

i continue to be confused :silly:
[Galaxy S III General] zaphodbeeb:
fixed my sg3...thanks

Top man. Fixed my problem just flashing the zip in cmw mod did the trick.:cool:
[Galaxy S III General] Rox598:
Hey Root! think i'm gonna flash the 4.2.2 leak instead. so to do that i flash the ROM (through odin?) then go into clockwork mod flash your zip and thats it? just wanted to check since it's through odin not sure if i could
[Galaxy S III General] danarama:
O

Flash the rooted leak via cwm. If it comes with a baseband, reflash the basebands from post 1

I already said I stand corrected in regards to ultima and its kernel. As kryten says, kernel bug seems to be gone in ultima 15.

We already know about these basebands only being needed to read new efs format (that's what post 1 of thus thread is about) and that flashing the rom changes efs (whether that is rom or kernel, I don't know)

Flashing a custom kernel seems to be ultima rom specific so it falls out of the scope of this thread. This thread is about imei and efs. If I.posted every slightly related rom quirk in this thread, it would becomes ridiculous. I stand by my statement that kernels are nothing to to with what is in this thread. If it turns out later that its specifically the kernel that changes efs in the first place, I may change my stance
[Galaxy S III General] Rox598:
Didn't think i could flash the leak through recovery since it's a tar file
[Galaxy S III General] danarama:
Many custom roms based on leak. Flashing full leak includes recovery etc so you wont have cwm any more and will be unable to flash my basebands. Basics
[Galaxy S III General] Rox598:
Yeah I know that i guess i'll have a ganders over in android dev for one based of the leak
[Galaxy S III General] kangerX:
There are MANY based on the leak and working great

sent from the state where marijuana is NOT illegal !
[Galaxy S III General] avikrick:
I'm currently on mg4 firmware.

Can I flash stock(xxeme3) via odin without messing up my efs partition. ..:confused:
[Galaxy S III General] A.S._id:
http://xdaforums.com/showthread.php?t=1901098&page=6

On the basis of the findings made ​​on the basis of the loss of IMEI and serial numbers, decided to update the backup tool for those who have not lost ...

He will be in addition to backing up and restoring an image backup and recover efs is also a copy of the current modema.

I'm tried only backup, restore me unnecessarily!

Only I9300!!!
[Galaxy S III General] kangerX:
awesome

sent from the state where marijuana is NOT illegal !
[Galaxy S III General] medw1974:
Yes seems that way. Grrrr if seller had been honest would have saved a lot of time. Ok I started a new thread aboit this but would value your opinion, do you think the storage issue could be down do a wrong PIT file?
[Galaxy S III General] danarama:
I really don't know a lot about pit files tbh. To answer would be to guess.
[Galaxy S III General] A.S._id:
Everyone lost imei, anyway dedicated ...

Recovery:

1. You must have a backup of efs (for those who can not read no more pointless) ...

2. Open the backup hex editor and trying to drive in the search: I9300 - it will show a line with the required version MODEM ...

3. Flash firmware contains this MODEM and get ROOT, (can be flash already contains Root) ...

4. Restore partition efs appropriate way to backup ...

5. Do factory reset ...

and the only way ...
[Galaxy S III General] marracing:
I'm in EMG4 with my serial and imei ok. But I can't register to any network. My question is if I can try flashing a EMG2 firmware or I can get my imei and serial corrupted?

thanks
[Galaxy S III General] boomboomer:
Did you read this thread or any of the other stickies first?

Flashing anything to your phone can result in corrupting your efs folder, that's why all the guides say BACKUP YOUR EFS FOLDER.

Yes you can try EMG2 firmware or modem, just backup your efs first.

Posting the same question to ten different threads won't get you a faster reply.
[Galaxy S III General] trashkutys:
what to do if I don't have EFS backup? How can I get my IMEI back.

Currently on STOCK ROM I9300XXEMB6 , Build Number JZO54K.I9300XXMEMC3
[Galaxy S III General] danarama:
Please give more details. Generally no backup = send for repair
[Galaxy S III General] trashkutys:
My original IMEI is 356979055020460

Serial number is RF1D54KPX2V

The only backup I have is nandroid with Sotmax_Ultimate_Stock_V23_XXUFME7_HD_AR that I've been running without any issues.

I don't know when my IMEI changed. I don't remember which stock rom I flashed yesterday at night because I was really tired. It may be I9300XXEMC3_I9300NEEEMC1_I9300XXEMB6_HOME.tar.md5 or I9300XXEMG4_I9300OXFEMG2_I9300XXEMG4_HOME.tar.md5

Currently on I9300XXEMC3_I9300NEEEMC1_I9300XXEMB6_HOME.tar.
[Galaxy S III General] danarama:
If you did flash that second one, as per post 1, you need an mg* modem....
[Galaxy S III General] trashkutys:
What's an MG* modem? I'm sorry I'm still a noob.
[Galaxy S III General] danarama:
Its all explained in post 1
[Galaxy S III General] trashkutys:
So I need to flash the MG basebands on top of my I9300XXEMB6 via clockworkmod?
[Galaxy S III General] danarama:
If you have clockworkmod, yes.
[Galaxy S III General] trashkutys:
It worked! Thanks! Another question. Now every time I flash another ROM without MG modem I will always need to flash MG_basebands?
[Galaxy S III General] kangerX:
If you install a ROM which changes baseband u will need to flash mg baseband again

sent from the state where marijuana is NOT illegal !!
[Galaxy S III General] G1032:
Guys

Sorry if this has been asked before. Answer not in first 5 pages or last few either.

I'm on XXEMG6 ROM at the moment with the MG2 modem. I have a full efs backup from before flashing the MG6 ROM.

All is OK, except that after I go out of coverage, full 3G data never gets restored after I come back into coverage again. I need to manually search for and connect to the network. It's no major big deal but can be a nuisance.

This has been an issue with every modem I've ever tried except for NELK2

My question is this;

In order to restore my old efs folder which will enable me to use the NELK2 modem again do I need to flash an old 'pre' MG6 ROM or can I restore the old efs folder on the new ROM?
[Galaxy S III General] danarama:
Should be ok on that rom.
[Galaxy S III General] A.S._id:
SAMSUNG_efs.img_BACKUP_ODIN
[Galaxy S III General] danarama:
Awesome!
[Galaxy S III General] mcwurth:
md5 mismatch

i got an md5 mismatch even though it is from this telephone... im a bit lost now to be honost i followed the sticky thread i redid my whole phone through odin. i have the efs folder extracted from a tar any idea what i should/could do?

tell me what i should give for more direct help.

edit:

dirty unicorn ROM

android 4.2.2

baseband version i9300xxemb6
[Galaxy S III General] G1032:
Oh well. Looks like I'm stuck with the new MG modems

Tried resorting my Philz efs backup via Philz custom recovery. Got an md5 mismatch??

Then tried resorting my backup made with kTool. kTool said efs was restored but no old modem will work.

Any ideas?
[Galaxy S III General] A.S._id:
1 flash empty image via odin

2 http://xdaforums.com/showpost.php?p=45040112&postcount=205

3 put your tar backup into root sdcard

4 busybox tar zxvf /sdcard/efs-backup.tar.gz -C /
[Galaxy S III General] mcwurth:
2. Open the backup hex editor and trying to drive in the search: I9300 - it will show a line with the required version MODEM ..

i only do not know how to do this or do i misunderstand?
[Galaxy S III General] A.S._id:
You can try Notepad++

Open nv_data.bin
[Galaxy S III General] danarama:
Not really got any ideas. I assume all future modems will work too. It's just a case of not going backwards.
[Galaxy S III General] mcwurth:
right this was it:
[Galaxy S III General] danarama:
Whenever possible, use either Gedit or notepad++ for everything.
[Galaxy S III General] mcwurth:
you know i got so pissed of i restored my rom again from my backup from 2 days ago deleted my efs folder and just copied my backup in it and voila! magic happend my efs is restored.

thanks for the replys and all your hard works i do apreciate it to come here and hear people sighing behind their desks and think: oh no another noob coming here :P (J/K):cyclops:
[Galaxy S III General] JesusEsquivia:
No signal - Latinoamerica HELP!

Hi, I updated my phone to the EMG2, and i never got any signal; after downgrade I lost my IMEI but i recovered it when i did the modem change to MG2. My issue now is that I don't have any signal, my phone remains on Emergency calls only.

Is there any solution to this? Because I flashed other modems, they keep my IMEI but doesn't get signal at all. I really desperate about this, any help will be appreciated.

Thanks!

I'm form Colombia, Currently using bandbase EMG2. Stock rom. Sorry for my english.
[Galaxy S III General] danarama:
MG2 is a baseband not a rom. Its packaged with the mg5 rom. Flashing the baseband alone does nothing to change efs. Please be specific as ti what you flashed. Provide links
[Galaxy S III General] boomboomer:
I'd guess he flashed the full EMG2 rom, then found the included modem didn't work in his country.

If so, and you don't have an efs backup, then you are stuck until Samsung release a newer rom for your country with the right modem included.
[Galaxy S III General] danarama:
Oh. I'm not aware of an MG2 ROM. What country is that?
[Galaxy S III General] giov87:
Guys sorry to ask.. So there is no way to be completely stock, if you have faced the mg4 issue? I mean that i need to be root to flash the emergency.zip..

You see i was in latest Germany unbranded firmware and flashed slim bean.. Now i try to return to stock, but faced mg4 issue. :rolleyes:
[Galaxy S III General] danarama:
You can be completely stock, but only on MG*
[Galaxy S III General] giov87:
I tried with my factory stock firmware which is MG4.. but i only got emergency calls. I had to flash emergency.zip again, to make calls..

I'm a little confused.. :eek:
[Galaxy S III General] danarama:
What emergency zip? The one not in this thread?
[Galaxy S III General] giov87:
This one.. Thank you in advance my friend for clearing up things for me..
[Galaxy S III General] danarama:
That's just the MG4 modem which already comes with the MG4 ROM so it makes no sense why flashing that zip would fix anything.
[Galaxy S III General] giov87:
So why after returning to stock mg4, i still have no signal for calls? :rolleyes: Let me re-install the firmware..

Edit: My wrong.. seems that the firmware that i had backed up as "factory firmware" (in case i need service, to be in warranty), was the last before mg4.. Now downloading the latest one.. If you ever come to Greece, i'll buy you a drink.. ;)
[Galaxy S III General] ricomana:
This may be a dumb question, but it's not in the first post.

I really don't know how to view the imei?

I want to check if it's lost because my sim doesn't get recognized.
[Galaxy S III General] danarama:
All the info you will ever need is:

Settings > about phone

or

Settings > about phone > status
[Galaxy S III General] JesusEsquivia:
HELP - No signal - MG2 Baseband

I used Neat rom a ROM with MG2 Modem - > http://xdaforums.com/showthread.php?t=2060403

Now I'm using a stock rom with MG2 baseband too.

As the others said the new modems MG2/4/5/6 don't work on my country, I have my IMEI again but I don't have any signal. What should I do? Is any solution to modify the EFS in order to make a downgrade and go back to older modems?

I appreciate any help.
[Galaxy S III General] danarama:
Unfortunately not. None of them work?
[Galaxy S III General] JesusEsquivia:
No signal - MG2 Baseband - HELP.

None, I have no signal. I used an Ariza patch to gain signal with every rom, but I don't think the patch will work since it modify the Modem.

So, I'm stuck until samsung release a modem for my country? Or until a patch is released for worldwide modem use? :crying:
[Galaxy S III General] danarama:
Actually I think ariza patch is the problem.

1) Ariza patch doesnt work on new EFS from MG*

2) Phones with Ariza patch BEFORE new EFS, also breaks when upgrade to MG*

In the ariza patch thread, there is a user called zuluman who claims to get ariza working with modification of teh patch. Check it out. I haven't seen proof of it working yet though.

Othwerwise, send device for repair.
[Galaxy S III General] JesusEsquivia:
No signal - MG2 Baseband - HELP.

You're right, Ariza patch messed up the IMEI. When I went back to MG* basebands I recover my IMEI but I have no signal.

Do you have the link of that thread? I want to check out if there's any solution to my issue.

If I send it for repairs they will downgrade the SO and then will recommend a board change. Wich is expensive.

I really appreciate your help rootSU. :good:
[Galaxy S III General] danarama:
Yeah it's in Q&A

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

As for repair, just needs EFS re-written. No hardware needs replacing.
[Galaxy S III General] JesusEsquivia:
No signal - MG2 Baseband - HELP.

Just for information: I tried Zuluman patch, didn't work, Gives as a result null/null on IMEI and Unknow basebands. If I find a solution I'll post it here.

Thanks rootSU for your time and help. :good:
[Galaxy S III General] danarama:
You're welcome. And thanks, would be interested in any solutions to this.
[Galaxy S III General] JesusEsquivia:
Solved.

I found the solution, I'm using the Zuluman patch in a custom rom. I was trying with a stock rom with the original MG2 baseband. I don't know if its matte but finally I got my signal back. I'm very grateful for your help rootSU. :good:
[Galaxy S III General] mcwurth:
I face another issue now : i can call but nobody can call me. The hear the dialing tone but my phone wont ring but i can receive sms. I tried a search but on mobile it is not so good.

the monkey grabbed my banana, now its eating vanilla sticks
[Galaxy S III General] danarama:
Please can you post the steps?
[Galaxy S III General] JesusEsquivia:
Zuluman Patch MG* Modems.

I flashed a custom rom, then the Zuluman Patch, it recover the signal and IMEI instantly. I don't know if works with stock roms, but I know, that Zuluman Patch doesn't work with stock roms that are compatible with the MG* modems.

Edit: I tried with a stock rom compatible with older modems, works like charm.
[Galaxy S III General] prem7563:
MG2/4 baseband package worked

Thanks a lot MG2/4 baseband package worked imei recovered

everything working fine

thanks again
[Galaxy S III General] mandarkcn0:
thanks for this wonderful tips :)
[Galaxy S III General] danarama:
You're welcome
[Galaxy S III General] giov87:
[MENTION=2872010]rootSU[/MENTION], i need your lights again.. :D

I have fixed my "no signal" error by flashing back to stock MG4. Thing is that before flash back, and because i was anxious with "no signal", i tried to restore efs folder that i had backed up long time ago. Can't remember if the copy - paste was successful..

To the point now, i found a efs.tar.gs that omega rom had created, dated on July of 2013. I'd like you to help me make sure that my efs folder is untouched.. :confused:

Would be much appreciated.. :highfive:
[Galaxy S III General] danarama:
Im sorry I dont understand what you're asking
[Galaxy S III General] giov87:
I was talking about reseting somehow my efs.. if that's possible..

Nevermind.. as long as my phone works properly on MG4, gonna stick there, to avoid any troubles.. :D
[Galaxy S III General] manx21:
Hi, I've got a question,

I rooted my S3 without backing up EFS and got the no network and 0049 IMEI thing, so I went and got it repaired in one of those crappy phone unlocking shops.

It works fine now, but my version of Jelly Bean isn't up to date now and I can't update via OTA or Kies as my phone is rooted and showing up as "Modified".

What I'd like to know is, can I safely flash an up to date version of stock ROM or will this mess up my IMEI number again? Is the fix for it linked to the root and ROM?

I've attached a screenshot of my about phone screen if that helps.

Thanks very much
[Galaxy S III General] kangerX:
You'll need to use triangle away and flash stock to get rid of modified status to get ota.

Or you can flash latest fw but you might lose imei again so have a efs back up made just in case you loose it while flashing

sent from the state where marijuana is NOT illegal !
[Galaxy S III General] manx21:
Cool, thanks for the help!

So if I backup my EFS file with kTool, I should be covered?
[Galaxy S III General] kangerX:
yes. :)
[Galaxy S III General] manx21:
Thanks very much, most appreciated! :good:
[Galaxy S III General] olly2009:
I am a new owner of a GS3 and received the OTA to 4.1.2 MG4 baseband/modem (I believe it means the same) before I had a chance to figure out the efs issues. So I did an efs backup, clearly understand that I am stuck with ROM with MG4 from now on, or that I need to flash the mg4 modem for roms that contain a different modem.

I understand aosp rom don't include modem and therefore are also compatible with myphone. So i am wondering why rom chefs don't always provide Rom without the modem, wouldn't that avoid most of the issues ?
[Galaxy S III General] danarama:
If you read post 1, you'll know its the rom that changes efs, NOT the baseband - so not including a baseband resolves nothing
[Galaxy S III General] KfirLankry:
unfortinetly i didnt backup my efs, and im stuck

hey unfortinetly i didnt backup my efs, and im stuck with 0049 imei..... i was rooted and back to stock rom, but i still stuck with 0049 imei.. i dont know what to do... how can i fix this phone ?!
[Galaxy S III General] olly2009:
But you have also said

And this is where I get lost ...
[Galaxy S III General] JJEgan:
Service centre paid for repair .

jje

---------- Post added at 02:12 PM ---------- Previous post was at 02:11 PM ----------

Do you have AOSP rom ???
[Galaxy S III General] gauravinvouge:
Dear rootSU,

Although i think you might have got a little bit irritated but to get to know these things in a better way plz answer this,in your post you have mentioned this:-

"If you have ever flashed XXEMG4/5 ROM, to keep your IMEI working, you must:

Stay with the basebands MG4/2. You may flash other ROMs but must return to the MG4/2 baseband.

Restore your efs backup (taken before XXEMG4/5 ROM install) to use older basebands."

1) how to check rom contains which baseband?

2)how to know if i need to flash a baseband after flashing a rom (as i read somewhere at xda that not all custom roms have basebands)

"You can download an MG2/4 baseband package HERE"

after having downloading it how to use it?

Thaks in advance
[Galaxy S III General] danarama:
CWM flashable zip.
[Galaxy S III General] gauravinvouge:
what about the first two questions?
[Galaxy S III General] danarama:
1) AOSP Roms don't contain basebands, otherwise - read ROM thread

2) IMEI is incorrect / can't get signal / no network connection.
[Galaxy S III General] gauravinvouge:
what did you got when you extracted the tar.gz file i had backed up using EFSPRO and got a .tar file and upon extracting i ogt an efs.img file

thanks in advance
[Galaxy S III General] kangerX:
only efs.img is of no use !
[Galaxy S III General] gauravinvouge:
well i don't know but EFS PRO saved it in this format only ie.tar file and when i extracted it it gave me an efs.img file so i copied the efs.img file on to sdcard/efs which was newly created by me and then restored via EFSPRO and got it working

My point is we should have a set of rules for all others atleast for those who have taken a EFS PRO backup and that's why i'm asking questions and requesting experts and mods to update us on this

thanks in advance
[Galaxy S III General] kangerX:
that's weird I didn't know about restoring with just .img ...:good: BTW i think thread is not gonna spoon feed to people on how to use efs pro .