Hi all. I rooted my phone couple of weeks ago and I didn't like the rom that I flashed and I decided the unroot my phone. So today I tried to unroot my phone and applied triangle away solution. Everything went perfect. I flashed a stock rom, I unrooted my phone successfully. Since this I have no connection at all. No 2g, no 3g. I've done some research on the Internet but couldn't find a proper answer. The phone shows the imei number but it doesn't match with the number under the battery. What should I do?
Marashlim said:
Hi all. I rooted my phone couple of weeks ago and I didn't like the rom that I flashed and I decided the unroot my phone. So today I tried to unroot my phone and applied triangle away solution. Everything went perfect. I flashed a stock rom, I unrooted my phone successfully. Since this I have no connection at all. No 2g, no 3g. I've done some research on the Internet but couldn't find a proper answer. The phone shows the imei number but it doesn't match with the number under the battery. What should I do?
Click to expand...
Click to collapse
go through this post and find a solution:
http://forum.xda-developers.com/showthread.php?t=2344125
Marashlim said:
Hi all. I rooted my phone couple of weeks ago and I didn't like the rom that I flashed and I decided the unroot my phone. So today I tried to unroot my phone and applied triangle away solution. Everything went perfect. I flashed a stock rom, I unrooted my phone successfully. Since this I have no connection at all. No 2g, no 3g. I've done some research on the Internet but couldn't find a proper answer. The phone shows the imei number but it doesn't match with the number under the battery. What should I do?
Click to expand...
Click to collapse
As per the faqs and guides restore your backed up EFS folder .
Not read the basics and no EFS backup then its a paid for service repair.
jje
I have no efs back up. I rooted my other phone million times but I've never backed it up. So jje you basically mean there is no exact solution for the issue. I need to send my phone to the service?
If you flashed a custom rom it may have a EFS backup look for EFSbackup.tar on your phone .
Looked for it but there is nothing. I've sent a PM one of the XDA users who is an expert with IMEI. I'm waiting for his answer. If he can't fix it I'll visit a Samsung repair centre. The phone is now out of warranty, isn't it? How much they are gonna charge me roughly?
did you try to flash an emg2 or emg4 baseband? some have reported that this can restore network connection
ashraf sharif said:
did you try to flash an emg2 or emg4 baseband? some have reported that this can restore network connection
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Click to collapse
You are amazing mate. Your suggestion fixed the problem. I now have 2G, 3G connection on my phone. Thank you so much.
make sure that going forward if you flash any other baseband or rom that includes a baseband as all stock roms do and also some custom roms as well, that you flash one that is newer than what you have now. the older basebands can no longer read the efs folder because beginning with emg4 the efs folder is modified so older radios will not work properly. back up your efs folder because it may get corrupted. if that happens than only a backup can restore your network connection, this time you got lucky it was not corrupted yet. the format changed but the info was intact. please read the stickies all the answers are there.
ashraf sharif said:
make sure that going forward if you flash any other baseband or rom that includes a baseband as all stock roms do and also some custom roms as well, that you flash one that is newer than what you have now. the older basebands can no longer read the efs folder because beginning with emg4 the efs folder is modified so older radios will not work properly. back up your efs folder because it may get corrupted. if that happens than only a backup can restore your network connection, this time you got lucky it was not corrupted yet. the format changed but the info was intact. please read the stickies all the answers are there.
Click to expand...
Click to collapse
Dear Ashraf sharif,
My sgs3 gt i9300 currently has baseband version I9300 DDEMG2 and bulid number JZ054K.I9300XXEMG5.
I had flashed resurrection remix rom and i got my IMEI changed and baseband version unknown then i restored everything back with a lot of help form rootsu,now my issues are:-
which all baseband i can flash or which roms are suited for this ie what should i look for in a rom while flashing as far as baseband and not ****ing up my imei is concerned?
and does that means in addition to flashing a custom rom i need to flash a baseband also as you mentioned that few custom roms have baseband ie all doesn't have basebands???
thanks in advance.......
I am no expert on this issue as I have not experienced it myself. With that being said , it is my understanding that once a g series modem or baseband is used reverting to an older baseband will result in no network. Read the thread in general called " attention 19300xxemg4 changes efs folder". some firmwares do not touch the baseband only affecting system+ kernel+ recovery.
Since you are on mg2 baseband it is probably safest for you to stick with it because it works . If you do decide to change it make sure you flash a baseband that is either the same or newer. Also make sure csc code is correct for your region.
Make several backups of your efs and save to external sd and computer and flashdrive. Read the stickies .
wait and see before flashing . Read reviews for newly released firmwares. This is how I avoided this relatively new issue with efs imei . I simply read the thread "attention 1900xxemg4 changes efs folder.
Related
Dear All,
My Galaxy S3 cannot connect to network after rom update. I have searched a lot but i could not figure out the problem since i have no problem with my imei. I can see correct imei, but no serial number no hardware revision and no signal when sim is inserted. without sim it can detect signals.
To figure out problem i need EFS.tar of some working I9300. If some one can provide me his efs backup in tar, i will be a big help for me.
ha ha ha ha ha! You really think someone is going to give you their efs?!
©®™ slappy
slaphead20 said:
ha ha ha ha ha! You really think someone is going to give you their efs?!
©®™ slappy
Click to expand...
Click to collapse
+1
Sent from my GT-I9300 using xda app-developers app
muhammad.ali123 said:
Dear All,
My Galaxy S3 cannot connect to network after rom update. I have searched a lot but i could not figure out the problem since i have no problem with my imei. I can see correct imei, but no serial number no hardware revision and no signal when sim is inserted. without sim it can detect signals.
To figure out problem i need EFS.tar of some working I9300. If some one can provide me his efs backup in tar, i will be a big help for me.
Click to expand...
Click to collapse
Sorry to be the one to tell you this, but without a proper backup, you almost certainly won't be able to recover the efs folder. That's why backing up the efs folder is so critical before you begin any flashing procedure. It contains information unique to your device, without which, you have basically a very expensive media player.
donalgodon said:
Sorry to be the one to tell you this, but without a proper backup, you almost certainly won't be able to recover the efs folder. That's why backing up the efs folder is so critical before you begin any flashing procedure. It contains information unique to your device, without which, you have basically a very expensive media player.
Click to expand...
Click to collapse
Does this means that even if have another efs folder it will be no use to me?
I have my EFS folder intact and it has all files in it. but there is some problem with any file, that does not allow to register to network.
That's quite unfortunate, backing up my EFS folder was the 1st thing I did after getting my phone to avoid this kind of issues (prior rooting, of course).
By the way, was it an official OTA update or was it manually injected?
Any piece of information you can bring about the issue may help people here to figure out a way to help you.
How sure are you it is the EFS that's the problem? If you can see the folder and it has files in it, why are you looking at EFS being the problem? I'd have thought with a corrupted EFS you wouldn't have a file structure to be looking at, but I may be confused as to what an EFS is/does)
Have you tried using CWM to Factory Reset, wipe data and Dalvik and then run your Rom again?
Have you tried downloading and flashing a stock ROM for your phone?
VulguM said:
That's quite unfortunate, backing up my EFS folder was the 1st thing I did after getting my phone to avoid this kind of issues (prior rooting, of course).
By the way, was it an official OTA update or was it manually injected?
Any piece of information you can bring about the issue may help people here to figure out a way to help you.
Click to expand...
Click to collapse
Infact there was an OTA update but it failed to install from stock recovery mode. After reboot there was a message to use kies or contact service.
So i used. But kies showed that it cannot updte this phone ( because CSC was XXX ) so i used firmware inatialization method to download firmware by entering model and serial number in kies.
After update i was stuck in this situation,
Have you flashed a stock Rom with Odin to try and rectify?
Journyman16 said:
How sure are you it is the EFS that's the problem? If you can see the folder and it has files in it, why are you looking at EFS being the problem? I'd have thought with a corrupted EFS you wouldn't have a file structure to be looking at, but I may be confused as to what an EFS is/does)
Have you tried using CWM to Factory Reset, wipe data and Dalvik and then run your Rom again?
Have you tried downloading and flashing a stock ROM for your phone?
Click to expand...
Click to collapse
Yes i am also confused about this.
Befor touching EFS folder i did factory reset, wiped data, delvik , re installed different official and custom roms. But it did not solve my issue.
I focused my attention to efs because all my symptoms are similar to people who have lost their imei. But my imei is O.K
You have any other suggestions.
slaphead20 said:
Have you flashed a stock Rom with Odin to try and rectify?
Click to expand...
Click to collapse
I flashed LE8 and LH1 via odin , but it did not help
If your IMEI is intact its not generally an EFS issue.
Asking for someones EFS backup is generally a no no, and it wouldn't work anyway.
My understanding, from reading what Odia posted (who is generally considered the expert on this sort of thing) is that the EFS is in part encrypted with the devices ID, so if you use someone else's EFS on your device, it will fall back to the generic IMEI which would be worse.
Try flashing a full odin firmware and go from there.
veyka said:
If your IMEI is intact its not generally an EFS issue.
Asking for someones EFS backup is generally a no no, and it wouldn't work anyway.
My understanding, from reading what Odia posted (who is generally considered the expert on this sort of thing) is that the EFS is in part encrypted with the devices ID, so if you use someone else's EFS on your device, it will fall back to the generic IMEI which would be worse.
Try flashing a full odin firmware and go from there.
Click to expand...
Click to collapse
I have tried using LE8 and LH1 from samfirmware.
Is there any other full odin firmware?
I'm a little confused here. If I am reading this correctly, the phone works OK except it will not connect to a network and so doesn't work as a phone any more. Is that correct?
If so, maybe you're flashing the wrong thing - you might need to flash Modem firmware not ROM. Now I might be even more confused than I think I am, but it seems to me all the Comms stuff will require the modem side of things to be correct. It's possible I think) to have flashed a ROM that could be incompatible or which corrupted your modem side of things.
Keep in mind I am still learning this stuff, but recently I thought I'd get ready to flash a JB ROM by flashing a kernel that was supposed to be for JB - there were others there with a warning NOT to use with JB so I figured I should get one suitable for JB - long story short I had a non-starting phone and had to work from scratch with PC Odin to get everything working again.
So, I am guessing that the ROM you are flashing also needs a kernel and Modem flash. I'm also hoping if I am wrong someone more experienced will tell me why
My guess is also you'd need to flash kernel, then ROM, then Modem, and make sure they are all to whatever version o Android you are wanting to have.
Am I making sense or am I talking through my proverbial?
have you try to use another micro Sim, it can be micro Sim reader o your Sim.
I got my phone repaired from a third party repair centre,
They used SPT box to repair the efs folder. Now i have signals and it can connect normally.
It cost my $60 for repair.
Thanks to every one for helping me out in the repair.
Hello!
Today I decided to go back to the stock ROM of Samsung S3 (international).
So, I downloaded the original from sammobile :
http://www.sammobile.com/firmwares/3/?download=16458
Went into the Download mode of my phone:
With Odin3 (v3.07) I loaded the .tar.md5 file which I just downloaded. (by the PDA ofcourse).
Then my phone restarted and just follow the steps as you just get your new Samsung S3, like account configuration etc etc etc.
Did the tutorial to reset the flash/binary counter, just worked.
After this, I was planning to install Whatsapp again,
THEN noticed I had no network signal , except WiFi .
Probably there was no signal when the phone already got started.
I checked *#06# for the IMEI, and there it is.. the 004999xxxxxxxxxx / 08 .
So, I've checked some topics and tried a thing that should repair the IMEI.
But no success!
When I installed CyanogenMod, they didn't told me to backup the EFS folder (or I just didn't see that at all!)
So, I followed this topic:
http://forum.xda-developers.com/showthread.php?t=1264021
Didn't worked.
I'm root again btw on the stock ROM.
Then I noticed I've a backup of my phone BEFORE CM. Made it with the CWM itself, which I moved later to my computer.
So, I moved that one back to my phone. and when I go to CWM Recovery and select Restore
It says:
Couldn't open directory.
No files found.
So, checking for that error, someone came up with moving the backup files to
/data/media/Clockworkmod/backups/
Did not work!
What to do?
I'm questioning myself now, even if the restore is going to work, will the IMEI be restored too?
EDIT: Monday it will be shipped to Samsung.
- Back to stock
- Reset flash/binary counter
- Unroot
- Wipe cache and back to factory
Couldn't get rid of the 0049 IMEI and 0000000 S/N
I'll keep this post up to date when I hear something.
No CWM does not backup efs....I suggest you go here http://forum.xda-developers.com/showthread.php?t=2393289 because they will close this thread soon due to this question being asked many times before
I've seen that topic indeed, then I will put it back with flash/binary count to No , and the status to Normal.
Hope Samsung will fix it then when it just doesn't work.
https://dl.dropboxusercontent.com/u/23869279/Temp/xxemg4.zip
Flash via CWM. If you don't want to flash it via CWM you can also extract "modem.bin" file and flash as MODEM through your Odin.
JustArchi said:
https://dl.dropboxusercontent.com/u/23869279/Temp/xxemg4.zip
Flash via CWM. If you don't want to flash it via CWM you can also extract "modem.bin" file and flash as MODEM through your Odin.
Click to expand...
Click to collapse
Thanks for your reply!
I've set everything back to stock and reset the counter/binary to No , and the rest Samsung official again.
Today I went to the shop where I bought my phone, and they're going to sent it to Samsung.
Forgot to mention here that my S/N is also 0000000.
Let's hope that they will repair it.
I've red a news article, that Samsung has a new policy.
They now also repair rooted devices and even when a custom ROM was installed.
I'll find out when I got a message from the service centre.
When I know something, I'll post it here.
Thanks again anyway!
Should have tried your modem.bin
I've red a news article, that Samsung has a new policy.
They now also repair rooted devices and even when a custom ROM was installed.
Doubt that but just in case do let us know if Samsung reject warranty .
JJEgan said:
I've red a news article, that Samsung has a new policy.
They now also repair rooted devices and even when a custom ROM was installed.
Doubt that but just in case do let us know if Samsung reject warranty .
Click to expand...
Click to collapse
Will do :good:
Did you read the IMEI / EFS post on the general forum?
I had a similar problem... to make the story short before CM 10.1.3 I was on stock MG4, after CM I decided to go back to my carrier's stock ROM (needed to send my phone for repair, USB port was faulty) and I noticed the IMEI problem. What happened is that Samsung decided to change the efs format with MG4 (July 13th) so any rom prior to that won't be able to read the efs.
If your rom is prior to that then you need to flash a newer modem (MG4 or later) so it can work properly.
jmvelazquezr said:
Did you read the IMEI / EFS post on the general forum?
I had a similar problem... to make the story short before CM 10.1.3 I was on stock MG4, after CM I decided to go back to my carrier's stock ROM (needed to send my phone for repair, USB port was faulty) and I noticed the IMEI problem. What happened is that Samsung decided to change the efs format with MG4 (July 13th) so any rom prior to that won't be able to read the efs.
If your rom is prior to that then you need to flash a newer modem (MG4 or later) so it can work properly.
Click to expand...
Click to collapse
Yeah, I must have red over that... But I tried fixing it spending about 10-12 hours on it, cuz of searching and read it carefully.
I had no EFS backup, stupid that the CWM Recovery didn't backed that up , and of course, stupid of myself :silly:
I will now wait if Samsung is going to repair it under my warranty.
If not, they will probably call me about fixing it for a price.. (If the article isn't true about repairing rooted / flashed devices)
Update 15-11-'13
Phone is repaired under warranty!
They reprogrammed the phone and did a software update. I'm not sure if this is the 4.3.
Can pickup my phone monday, because the shop doesn't receive delivery on saturday -_- ..
But at least, it should be working fine now.
Hello All.
I have a Samsung Galaxy S3 international (GT-I9300 - OS 4.0.4 - I9300DXLE8 baseband) I applied a ROM update (4.2.1) and lost signal. I then flashed again using various ROMS but nothing. I did some research about the EFS folder and using the XXEMG4 modem binary to get the IMEI number back from the generic one but now I cannot connect to any of the mobile carriers that are found. I have to admit, before I discovered the XXEMG4 issue (from a thread here) I did (mistakenly) look in to the EFS folder and I confess I most likely have messed that up and that may be the reason I cannot get a signal any further even though I can get the correct IMEI?
Is there anything I can do which would not involve sending the phone to Samsung? Flashing the stock ROM did not fix it and now, I have found, regardless of what ROM I flash, I must also flash the XXEMG4 modem as well otherwise I just get a generic IMEI number. I blame myself and my own stupidity for not reading more about the EFS system first (and not making a backup either) so I just wanted clarification that there is nothing more I can do.
To summarise:
Updated ROM and lost IMEI (generic)
Did not back up EFS folder
Flashed various ROMS - no service & generic IMEI
Flashed ROM with XXEMG4 modem
Phone IMEI is correct but still no service - emergency calls only
Ariza patch did nothing, factory reset does nothing, stock ROM does nothing.
Many thanks for your time.
Install the patched mg4 modem and all should be fixed
Sent from my iPhone using Tapatalk
Start from beginning flash leaked firmware via odin from sammobile
Then root by cfroot
Install recovery and then flash custom recovery..
Also if u do have a backup of stock with working imei then u cn restore that if u dnt want to do the odin procedure..
Thanks for the replies but I seem to have fixed it.
I restored back to stock ROM, restored EFS Backup using KTools and restarted the phone and all is well.
I am now backing the phone up completely using EFS Pro.
Many thanks.
If you've corrupted files in the efs folder then no, there is nothing you can do yourself. The repair should not be too expensive as no hardware needed replacing.
Edit. You wrote 'didn't backup efs', but now say you've solved it by restoring your backup -which is the whole point of taking a backup before you flash anything.
ianwuk said:
Thanks for the replies but I seem to have fixed it.
I restored back to stock ROM, restored EFS Backup using KTools and restarted the phone and all is well.
I am now backing the phone up completely using EFS Pro.
Many thanks.
Click to expand...
Click to collapse
Where can I download Ktools?
Tidus32x said:
Where can I download Ktools?
Click to expand...
Click to collapse
Via search XDA
Hi guys, my phone (Galaxy S3 i9300 international) was repaired at service centre with z3x box after dirty downgrade from 4.3 t 4.1.2, i lost my IMEI, than when it was fixed, my phone was on 4.1.2, now i cant update my phone to 4.3 because i will get the emergency calls only again, after i tried repairing it and flashing with stock 4.3 rom via Odin but again emergency calls, then it was repaired again and put on 4.1.2 android, but i don't know why can't i upgrade it normaly without getting emergency calls, i tried also backing up .img of my efs partition when it was working, and restoring it on 4.3 but emergency calls was showed again, my imei was not broken, i just got emergency calls, tried flashing the patched MG4 modem but then my imei was null/null and i got it serviced againn. Yyes i have backed up my efs it is working now and i am on 4.1.2
Guys is there any chance for my phone to go on 4.3 after servicing with z3x box, i heard somewhere that i am now stuck on 4.1.2 forever, is that a sad truth?
Update: I can switch on whatever 4.1.2 ROM if it's MG3 or lower (EFS v1), after flashinng i get no network, i run ariza patch and it works, but ariza patch won't work on 4.3 or MG4 newer ROMs.
I also tried zuluman patched kernel and modem, and nope, no results, still no network.
Bump. Help please?
Your issue is the repair made your efs folder incompatible with all newer firmwares, a patched modern AND kernel may enable you to update -from what I've read the two are linked.
Failing that you could wipe the efs folder, flash a blank (someone posted a link the other day) then get a reputable repair to program the imei and serial numbers back on. A lot of repairs seem to fix by downgrading and Ariza, which is no use for efs v2.
There is a thread in general on restoring your imei, but hardware is required.
boomboomer said:
Your issue is the repair made your efs folder incompatible with all newer firmwares, a patched modern AND kernel may enable you to update -from what I've read the two are linked.
Failing that you could wipe the efs folder, flash a blank (someone posted a link the other day) then get a reputable repair to program the imei and serial numbers back on. A lot of repairs seem to fix by downgrading and Ariza, which is no use for efs v2.
There is a thread in general on restoring your imei, but hardware is required.
Click to expand...
Click to collapse
Thanks for the reply, i'll try to mix something up.
Oh, and one more question, does that all mean that i can never be on full stock anymore? I mean having 4.1.2 and normally upgrade to 4.3 with a normal efs update through installation?
With the first option no, you cannot use unpatched firmwares and your efs remains v1.
The second option might work, but depends if a repair can write to v2 efs.
Sent from my GT-I9300 using Tapatalk
Hello people, I will try to simplify and be concise on the problem/doubt I'm having:
Last week I decided to spice things up a little installing a custom ROM (was in 4.2.2, rooted) and gave a 4.3 custom ROM a try.
First flash was successful but didn't get any network. Went back to stock and all was fine (of course I had made previous nandroid and EFS backup). Second flash, during installation in AROMA installer, I ticked an option to update to latest modem. After that, I could only get emergency calls :S, even if I flashed back to stock. IMEI was right, S/N was right (I think), but no signal. It was suggested it could be a modem problem, but I still didn't grasp all the EFS v1/v2 format thing, was growing desperate and didn't want to screw things up more than already did, so, lastly, took the phone to repair service where they used BOX and my phone is all operational now on 4.3 stock build: XXUGMK6.
I want to learn from my "noobness" and am tempted to flash a custom ROM. As you would imagine, I'm still quite traumatized with the past problem and afraid I might screw things up AGAIN.
Now, I've noticed that, while my IMEI is still correct, the S/N is incorrect (not the same as written on the back), yet, my phone is fully functional.
could that cause problem, be it with EFS folder or modem, if I decide to flash a custom ROM again? Aren't IMEI and S/N suppose to coincide with what's written on the back of the phone?
I hope I explained clearly and wasn't boring! My apologies if my english isn't perfect.
Many thanks in advance!
Take it back to repair service, get them to put the right serial number back on it. Also make sure they didn't used the patched kernel and modem, to test flash the latest stock firmware or OTA update, if network is lost you'll know they didn't fix it properly.
Don't flash things you don't fully understand, read all the stickies before to do anything.
boomboomer said:
Take it back to repair service, get them to put the right serial number back on it. Also make sure they didn't used the patched kernel and modem, to test flash the latest stock firmware or OTA update, if network is lost you'll know they didn't fix it properly.
Don't flash things you don't fully understand, read all the stickies before to do anything.
Click to expand...
Click to collapse
Many thanks boomboomer for your reply. Before any flashing happened, I thoroughly read and understood at least an 80% of stickies, read all details about the custom rom and familiriazed myself with all main reference and guides threads. I've flashed custom roms on previous phones I've owned. The loss of network connectivity caught off guard and was looking for a definite solution.
So, I should flash latest stock rom before taking it again to service? what really happens if phone shows different S/N? again, thanks.