Develop Bugs

[Q] IMEI changes everytime I flash a rom ?! Advice ?

If anyone else has encountered something similar to this issue See the URL link below ! solved this issue
Evening XDA, *update**I think this is what the problem might be , will confirm later this evening after i get a chance to try it ** http://forum.xda-developers.com/showthread.php?t=2332913
Ive been flashing my androids ever since my GS2 - never had a problem..Well maybe a few but nothing a few hours of google and xda forums hasnt solved.
However as of a couple of days ago I was on Alliance Rom v3.0 for The N7100 , I decided it was time for a change ( note at this point nothing was out of the ordinary )
I downloaded the Stock Firmware ( just to test out Al-lplay with my new blu-ray player , and to see how bad stock looks these days )
I downloaded the firmware from Sammy Mobile, latest one ect all correct model..blah blah.
Rooted the stock firmware using odin 3.07, followed by applying TWRP recovery.
I had the Alliance V3.1 rom ready on my EXT SD card - So as i would normally go about doing it i'd started to flash this new rom.
After flashing i'd noticed it didnt apply - the stock rom had prevailed !...so repeated the flash procedure again...it applied this time..... however I now had no signal ?! strange !?
Ive Never had any issue with flashing and losing serial numbers or IMEI numbers, so at this point it wasnt backed up ( stupid i know !, but over the past 3 years ! ive not had any problems what so ever ! )
I thought the best option would be to wipe clean, and do a fresh install of stock rom and root/recovery and flash again !!
Same problem...
This time I decided maybe there was a problem with this file, so tried another ROM
Applied fine, however same issue...signal but its not registering on network !?
Went back to stock...to my horror...not registering on network...immediatly thinking..how ironic that i didnt back my efs folder up..and this had happned, checked my IMEI it had gone to the temp IMEI that loads of people have reported that flashing had given them.
Immediatly backed up my EFS folder ( knowing myself that its too late )
Tried flashing , Wannam Rom, Alliance Rom v3, Project AOSP, all with the same results...no signal or not registering on network ! all these showed my IMEI being the default one not my actual IMEI on the phone and box itself !
starting to have a little panic as my phones my only means of communication ( par from my Mi-fi ) I wasnt even able to call a local phone shop to enquire if they repair IMEI ect.
As a last effort I wiped the phone, flashed stock with odin, rooted/stock ect and deleted the old efs folder and pasted the same folder I had backed up earlier ( even when it wasnt working then ! )...and to such relief....it seemed to re-apply the correct IMEI ! happy days !
however...im still unable to flash any other Rom as it seems to clear my IMEI
thanks for reading this long dribble post, im at work and having to come back and add to this, when i get a spare moment ( appologies for the spelling and gram)
but any help or checks would be much app'd !!
Ry2mkk

I had a problem once that made my phone not ask for a pin, and not have coverage.
It turned out the recovery I used was wiping a little bit to much, and took out the modem too.
I didn't look at the imei, but in "Settings - About Phone - Baseband" it said something like it's unavailable.
To get it to work again I flashed TWRP (Team Win Recovery Project) http://teamw.in/project/twrp2/115, download a Stock rom from samfirmware.com, extract both the zip and the .tar.md5, open odin and put the modem file in the phone field.
Then flash just that, onlu modem, nothing else. That made it work for me. And after I switched to TWRP I have not had the problem.

well, i flashed only the modem, but it still didn't solve the problem
i am the problem as his...

beyarfaj2004 said:
well, i flashed only the modem, but it still didn't solve the problem
i am the problem as his...
Click to expand...
Click to collapse
It was the same for me.
Some one now?

Try to flash stock rom again maybe it will help you
Sent from my GT-N7100 using xda app-developers app

Galaxy note 2 Null IMEI.

Hi, i have a problem on my galaxy note 2, lost imei, and i have no EFS backup.
Is possible to restore it?
What metod should i use?
Thanks to all.
cheers.

csb-17 said:
Hi, i have a problem on my galaxy note 2, lost imei, and i have no EFS backup.
Is possible to restore it?
What metod should i use?
Thanks to all.
cheers.
Click to expand...
Click to collapse
Use the search feature there are many guides and tutorials on this subject already.
GT N7105 with XDA Premium......that is all......

I did that, i found this one. http://forum.xda-developers.com/showthread.php?t=1308546&page=141
But i dont know if it can write my imei back.
Then i found this rj-45 cable but it need a especific box to restore imei.
I did the search, if i wasnt lost i wouldnt ask.
Thanks for the help anyway

I recently went through this similar pain (last weekend). I had defaulted to the default IMEI, then deliberately removed the EFS folder to see if it would regenerate and the value became null.
In short, the way around this problem, as I also had no EFS Backup was to use the Emergency Firmware installation feature in Kies, which utilises the Serial number of your phone to determine the stock ROM required. I essentially restored it to out of the box state, with IMEI intact. I uninstalled Kies (as it has issues with the Toolkit) and using the Toolkit and Odin re-rooted, and backed up the EFS folder. Took multiple copies of this on e-mail, elsewhere on PC and SD Card! Restored ROM with Mods etc that I required, restored EFS Folder using an app called "nitrality" and wiped cache before rebooting.
IMEI and ROM back to what I wanted. Phew!
There are multiple methods documented on these forums, and the more detailed steps to the approach above is on here somewhere. Utilise the search to help yourself some more but I hope this is useful!
Bully

My experience
Well, I had this same problem because of the wrong ROM i installed, I am from the netherlands and my modem/kernel is: XDME4, however, when I installed a rom with another kernel/modem/Baseband name I lost my IMEI and network signals, All I had to do is flash a different kernel, and I got my IMEI back
Hope it helpt!
UPDATE: In my case, I lost nothing, but its on your own risk! If you willing to lose everything because you want to fix the problem, you can also try to flash back to official rom, and then flash a custom rom (not the same as before), or make a backup first, using Titanium or ROM Manager kinda apps,
Regards!

Last June I experienced the same problem upgrading the firmware of a brand new phone, completely stock and not rooted.
Before the upgrade, made ​​with KIES from PC, I had this:
AP: N7100XXDMB2
CP: N7100XXDLK7
CSC: N7100ITVDMA1
After the upgrade I had NULL IMEI and this:
AP: N7100XXDME6
CP: Unknown
CSC: N7100ITVDMF1.
Since I had no EFS backup, I tried to use the Emergency Firmware Installation feature in Kies, but it didn't help.
I couldn't yet figure out what this problem depends on. Can anyone explain it to me?
I solved making me replace the phone at the shop. The new one has DMC3, but I'm scared at the thought of updating it again.

efs restoring query??
hello everyone, i ve a efs backup, backedup wen im running on 4.3 (xxuemj5). is it possible to go back to 4.1.2 (N7100XXDMB2) and restore tat backup (backed up on 4.3)? i had a prob (" not registered on a network") last time wen i went back to 4.1.2.
thanks in advance-

vickyvc said:
hello everyone, i ve a efs backup, backedup wen im running on 4.3 (xxuemj5). is it possible to go back to 4.1.2 (N7100XXDMB2) and restore tat backup (backed up on 4.3)? i had a prob (" not registered on a network") last time wen i went back to 4.1.2.
thanks in advance-
Click to expand...
Click to collapse
No, you should restore an EFS backup made on N7100XXDMB2.

Try this, worked for me
check my other post. I fixed it http://forum.xda-developers.com/showpost.php?p=57991998&postcount=85

[Q] Imei correct, but corrupt efs folder, how to fix?

Friends I tell them what happened to me! I have a galaxy note N7100 2 and started to install a rom amending the efs folder (something you did not know) as a result I change the imei to 0049xxxxx and good after spending almost a week reading forums got a solusion, not if it was luck or me but I managed to put again flashing the rom imei assassin's. When installing did not give a efs backup and install it all, this rom gives you the option to put the kernel that you want and the modem, I am from Venezuela and trying to install the kernel branded the same rom but I chose the 3rd bottom-up modem. All fine, put me back my imei now had the problem of the signal, it sends me ariza and accommodation. Now a question, if I have signal when reviewing my efs folder is corrupt? I want to go back to have that repaired folder because I can not flash another rom and would stay stuck in this rom, having it bad I would present the same principle failures. If anyone knows how to fix that folder I would appreciate very gusto.Y if anyone has my problem and has the same model you have, this mas say I'll help you with pleasure.

Fake IMEI 0049, something wrong with EFS

Hi!
So my problem is this: I flashed a custom rom and didn't backup my EFS partition (duh).
Now my IMEI starts with 0049.
I have tried reflashing stock using both Odin and Kies, no help.
Most of the stuff found on the internet relies on having a Qualcomm chip...however Galaxy TAB 3 has Intel...so no help there.
Does anyone have any ideas or recomendations?

Maybe someone can share their EFS backup (where the phone specific data has been flushed out), or something.
Forgot to add, the device is GT-P5220

[help] imei unkown/00000 after restoring backup

Hello there,
I'll start from the very beginning...
My old Samsung Galaxy S9+ have a crack on its screen but my phone is insured so I got a new one, I backed up all of the files on the old one using TWRP backup (EFS, DATA, VENDOR, SYTEM, CARRIER, BASEBAND, RECOVERY, ODM). I tried restoring my old data to my new phone, it did the trick but there was a problem, the IMEI is UNKNOWN (00000), I tried scouring EVERY solution I could find to fix the problem but to no avail. Here's the list of every solution I could think of (although I'm sure I did a lot more than that) :
1. ODIN FLASH TO STOCK ROM (G965FXXSBETH2) I USED THE CARRIER ROM (Optus)
2. REPLACE THE DEVICE ID ON THE EFS BACKUP AND RESTORE (USING HEX EDITOR)
3. USE A COMBINATION FIRMWARE
4. REPLACE THE SIM CARD
5. IMEI MAKER/REPAIR
Okay now to explain why all of those didn't work :
1. I flashed it to stock ROM but it still didn't work for some reason, I figured it's probably because the ROM isn't really for refreshing IMEI
EDIT: I tried re-partitioning, pit and Nand erase but it didn't do anything.
2. I tried hex editing the efs backup for TWRP to restore but it still detects it as 00000
3. I can't use a combination firmware because the bootloader is updated (apparently I cannot downgrade) and every time I try flashing it, it just comes up with SW REV check fail (Bootloader) error
4. Well I tried, I though by replacing the SIM card I'll MAGICALLY get my IMEI back.
5. IMEI MAKER/REPAIR didn't do anything, I followed the specific instructions and got my IMEI number into it but when I flashed it via TWRP, my IMEI still remained the same.
Conclusion:
Yes, I learned my lesson and I should ALWAYS backup BEFORE I restore. I need HELP and I'm just in a desperate situation, I've been at this for 3 days now (maybe longer). My foolish self didn't untick EFS, Baseband, Carrier configuration or anything related to cellular phone internet before restoring. Somewhere around me buggering with the settings, my phone thinks it has 2 SIM slots (which it doesn't) but I'm sure that's not the problem. Please help me.

For reference with the IMEI MAKER/REPAIR here's the link to what I used
https://forum.xda-developers.com/cr...lashable-zip-imei-repair-android-one-t2992846
EDIT: Silly me, of course it won't work because it's for Android One devices ONLY.

Holy ****, never mind that. Thanks for fixing my phone @hainguyenthao you're a legend!

Holy ****, never mind that. Thanks for fixing my phone @hainguyenthao you're a legend!

Holy ****, never mind that. Thanks for fixing my phone @hainguyenthao you're a legend!