[Q] Help with generic EFS/IMEI S4-i9500 - Galaxy S 4 Q&A, Help & Troubleshooting

Hello, I was about to take my phone to a service center for check an weird noise, but since I was using CM11 with chinese modem, I decided to flash stock rom.
I'm on the old bootloader, I flashed I9500ZTOBMG1 but when I try to make a call it shows "not registered in network". I checked my imei with *#06# and it shows a generic IMEI starting with 0049...
I have already tried to reflash stock rom via odin, reflash stock modem via odin, restore to last CM backup, but problem still.
I DO have a EFS backup, it's a .tar and a .tar2.gz inside a folder called EFSProBackup, but I don't know how to use it or even how to restore my IMEI. I had already this problem before, but I don't know what I did to resolve. Can someone help me?
Problem solved: I flashed again the chinese modem via cwm after flashing a custom rom, I don't know why, but my imei is back again and working, But I still don't know how to have stock rom working....

Related

[Q] IMEI null and Baseband Unknown, No SIM detected on Samsung Galaxy Note 3 sm n900

Hello developers,
I found the exact same problem posted on xda developers fourm but none of the posts were answered completely or solved.
I rooted my Sm n900 without any problems, installed CWM recovery, installed SuperSu and installed VN Rom for galaxy note 3 (referred this from some Chinese guy on web (since i cant post third party links) its galaxynote3root dot com.
At first i didnt check efs backup option and installed VN rom without any problems (no imei loss or baseband unknown) on my own phone.
But when rooted one of my friends SM n900 with exact same method as i did earlier (but i checked create efs backup this time), i got screwed.
I tried EFS professional, but when i try to put his phone in RMNET + DM + MODEM by pressing *#0808#, and run efs software, and click either qualcommn or efs professional button, it doesnt recognise the device and says not connected.
I tried various other options as well such as rerooting, reinstalling the rom, reinstalling OEM rom, and other roms as well. Every thing is fin except IMEI and baseband null/unknown.
I had a problem like that. On my note 2 .i flashed patition file in odin and it was fixed.
bonebeatz1234 said:
I had a problem like that. On my note 2 .i flashed patition file in odin and it was fixed.
Click to expand...
Click to collapse
Which partition? EFS? Problem is, now i dont have any backups of EFS partition or folder. I am trying to flash modem via odin from phone mode. After that i will have tried everything and will be stuck with a bricked cell forever
rabinpro said:
Which partition? EFS? Problem is, now i dont have any backups of EFS partition or folder. I am trying to flash modem via odin from phone mode. After that i will have tried everything and will be stuck with a bricked cell forever
Click to expand...
Click to collapse
you should bring to the service center to record the IMEI number.
root your device and flash xxuene1 modem from recovery.
Modem is available on xda..search
I did the same and it worked for me
Not worked

HUGE problem with imei. please help

i didn't have an imei on my i9500 for some reason so i flashed a leaked 5.0.1 rom on my i9500 which fixed my imei issue. everything was working (calls etc). since you can't flash gapps on this rom for some reason i switched back to a stock rom and saw that my imei and baseband version were gone again. after some digging i found out that this was an efs file issue, so after (literally) 16 hours i finally fixed it by flashing the 5.0.1 leak with philz touch, backing up my efs file, and flashing a custom rom (hassan rom v7) and my imei appeared again. i wanted to go back to stock 4.4.2 touchwiz so i tried to flash it again but it gave me a fail. and when i tried again it succeeded but my imei was gone again after some more digging a found out that the 5.0.1 was a chinese rom and changed my model name to i9500chn, and they imei worked only when that was my model name.
so now i'm kinda stuck on hassan rom and my phones model is i9500chn. even though i backup my efs folder successfully, if i flash another rom that changes my phone to i9500 it removes my imei and the efs backups won't help (restore is successful but doesn't work).
what can i do in this situation??
PLEASE XDA PEOPLE HELP ME.
anyone???????
please?!
Wasn't there a tool to backup IMEI number? I remember there was something similar for the Galaxy Ace.
GDReaper said:
Wasn't there a tool to backup IMEI number? I remember there was something similar for the Galaxy Ace.
Click to expand...
Click to collapse
i do backup my imei but restore doesn't work.
maximusprimus said:
i didn't have an imei on my i9500 for some reason so i flashed a leaked 5.0.1 rom on my i9500 which fixed my imei issue. everything was working (calls etc). since you can't flash gapps on this rom for some reason i switched back to a stock rom and saw that my imei and baseband version were gone again. after some digging i found out that this was an efs file issue, so after (literally) 16 hours i finally fixed it by flashing the 5.0.1 leak with philz touch, backing up my efs file, and flashing a custom rom (hassan rom v7) and my imei appeared again. i wanted to go back to stock 4.4.2 touchwiz so i tried to flash it again but it gave me a fail. and when i tried again it succeeded but my imei was gone again after some more digging a found out that the 5.0.1 was a chinese rom and changed my model name to i9500chn, and they imei worked only when that was my model name.
so now i'm kinda stuck on hassan rom and my phones model is i9500chn. even though i backup my efs folder successfully, if i flash another rom that changes my phone to i9500 it removes my imei and the efs backups won't help (restore is successful but doesn't work).
what can i do in this situation??
PLEASE XDA PEOPLE HELP ME.
Click to expand...
Click to collapse
hi mate
Is hard to tell what went wrong ... what i would first of all is trying to go back a a normal stock (not leaked) but not sure if there will be any problem from going back to 4.4.2 from 5.0.1
Check here
http://forum.xda-developers.com/showthread.php?t=2265477
First thing i would do is trying to get rid of the chinese PIT from the leaked rom , what is the size of your internal SDm non chinese are around 8-9 gb , try to flash a stock rom (4.4.2) with a PIT file shown in thread , the second one
File Type: zip I9500_pit file.zip - [Click for QR Code] (1.0 KB, 22777 views)
READ FIRST, BACKUP and then proceed
Once you are back in stock ...you can start over

Efs got corrupt after flashing 5.0.1 leaked Chinese rom. How to restore it??

HI Devs,
I have flashed leaked lollipop build on my Samsung Galaxy S4 I9500, evrything was working fine, later I decided to go back to stock 4.4.2 rom.
When I flashed stock rom, my phones' efs folder got corrupt, now my phones baseband is unknown, Serial no. is something different, Imei no. is something different.
I tried flashing back that leaked build, again everything started working fine. So I backed up efs folder from there and again flashed stock rom via odin.
After flashing stock 4.4.2, again same issue was there, so i restored the Efs folder and restarted my S4.
But nothing changed.
Can anyone help me in restoring efs back to back.
I want to restore my phone to stock build and with original imei and serial no.
tush1114 said:
HI Devs,
I have flashed leaked lollipop build on my Samsung Galaxy S4 I9500, evrything was working fine, later I decided to go back to stock 4.4.2 rom.
When I flashed stock rom, my phones' efs folder got corrupt, now my phones baseband is unknown, Serial no. is something different, Imei no. is something different.
I tried flashing back that leaked build, again everything started working fine. So I backed up efs folder from there and again flashed stock rom via odin.
After flashing stock 4.4.2, again same issue was there, so i restored the Efs folder and restarted my S4.
But nothing changed.
Can anyone help me in restoring efs back to back.
I want to restore my phone to stock build and with original imei and serial no.
Click to expand...
Click to collapse
Hi mate
Looks like the problem is the modem and not the efs , try flashing a 4.4.2 modem
There are several people who have the same issue. I don't know if there is a solution. I haven't seen one on this forum. Try google.
You can't downgrade. Once you are on 5.0 then you stay on 5.0

IMEI number lost after flashing ROM (no backup)

I know there might be another similar topic but I couldn't find any help so far.
Basically two days ago I flashed custom ROM on my phone, I didn't make any backup. At first it worked perfectly. I decided to flash ROM again and formated my phone and found out that EFS partition was lost. I didn't get any mobile data and my IMEI number was lost (0000000). I've read that IMEI is actually stored on some chip so is there any way to restore it back? My phone is Samsung Galaxy A5 2017. Any help will be appreciated.
Trying to flash latest stock rom from sammobile but after flashing it with odin it starts bootlooping and saying "no command" again and again. When holding power + home + volume up I can NOT access recovery. Any solutions, please?
Anyone? Is there any solutions for my problem??
Is it possible to downlaod EFS file for my phone and somehow change IMEI in the file?
just flash stock rom, i did on my galaxy ace i flashed custom rom and imei gone, after stock flashed via odin imei back.
Thanks for your answer! I tried indeed flashing latest stock rom from sammobile with latest odin. But when I bootet phone up it said "no command" with dead android logo and kept bootlooping. I can try different version of rom, maybe it helps.
Still my problem is unsolved. Any clues what to do would be great.
You probably flashed a wrong firmware which is not for your variant.
Can you remove your battery? If so remove it and put it back and enter download mode by pressing volume down,power and home button. Afterwards, find the firmware which is for the specific variant of the phone. Only get the "HOME_CSC" version or else you will lose all you data. In odin, if it says added, flash the stock firmware and see if it boots to the system. If you could give me your variant, I could help and give you an even more detailed guide.

IMEI lost after flashing custom rom

Hi, I flashed a custom rom and noticed my imei was unknown, and it says no sim - emergency calls only. I was dumb and didnt make a backup. Is there any way to restore my imei? I tried flashing a different rom and it didnt work.
Gingerninja701 said:
Hi, I flashed a custom rom and noticed my imei was unknown, and it says no sim - emergency calls only. I was dumb and didnt make a backup. Is there any way to restore my imei? I tried flashing a different rom and it didnt work.
Click to expand...
Click to collapse
Try flashing stock filmware with Odin, this has fixed it for me in the past. Just bare in mind that you can't flash older filmware than what is already on the phone so you are probably best to flash the latest.

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