IMEI Null & Baseband Version unknown - Galaxy Grand 2 Q&A, Help & Troubleshooting

Hello everyone, it's the first time starting a thread and asking questions in Grand 2 Q&A section.
I am running a unmodified Motion ROM V17.0 on my Grand 2 SM-G7105. The Rom has been operated for 2 months and I didn't faced any sort of problems.
Unfortunately, yesterday when I turned on the device, it gives me a wrong date and time. Just when I am checking what caused this problem, I found NO mobile singal and Wifi singal! I can't make calls, receiving SMS and surf the net. The IMEI number is Null and Baseband version turns unknown! I thought something must have been corrupted and I wiped the cache, dalvik cache and data in TWRP recovery. When the phone booted up again, Start up wizard popup and there's many FCs. I reinstalled the Motion ROM with full wipe in TWRP. The phone boots up but however, it cannot recognize the SIM card. The baseband version and IMEI are still 'unknown' in the Settings App. The phone will lag to death if I didn't turned on the Airplane Mode. The phone has random reboots and cannot be shut down. But the Wifi worked now. I think the mobile singal problem still persistent is because of the IMEI and baseband unknown...
I want to repair my phone and make things works again like before. Is there any ways to restore the IMEI and Baseband version? I've seen a few articles about this and they mentioned EFS folder is damaged. I wanted to flash a stock rom via Odin but no computer is with me now.
Please help me!
Any help is highly appreciated! Thank you!

http://www.technobezz.com/fix-samsung-galaxy-unknown-baseband-version/

Related

[Q] Serial Number changed flashing rom

Hello guys I need your help, Yesterday I was flashing MIUI ROM for my SM-N900W8 and it was not succesful, so I tried to restore the backup I did before flashing, but the problems started when TWRP did not allowed me to restore, it said Fail... after that I installed the Stock Rom from Odin and everything went ok until I was configuring the phone and when I was willing to connect to my wifi it appeared an error "Unfortunately Remote controls stopped" and the wifi turned to grey and I was not able to use it...
I flashed another stock rom (with operator) and the same issue, searching in the web I was a little deep about knowing what was happening and I realized my Serial Number changed, My IMEI is ok, but the problem persist. I need your help about this and restoring back again my phone. Thanks a lot
me too
just_one said:
Hello guys I need your help, Yesterday I was flashing MIUI ROM for my SM-N900W8 and it was not succesful, so I tried to restore the backup I did before flashing, but the problems started when TWRP did not allowed me to restore, it said Fail... after that I installed the Stock Rom from Odin and everything went ok until I was configuring the phone and when I was willing to connect to my wifi it appeared an error "Unfortunately Remote controls stopped" and the wifi turned to grey and I was not able to use it...
I flashed another stock rom (with operator) and the same issue, searching in the web I was a little deep about knowing what was happening and I realized my Serial Number changed, My IMEI is ok, but the problem persist. I need your help about this and restoring back again my phone. Thanks a lot
Click to expand...
Click to collapse
I think MIUI messed my phone up too!
My phone stopped radio function. WIFI works fine, but my network isnt being picked up at all. The SIM works though. It saves and deletes contacts properly, but has no signal.
I have been scouring the internet looking for radio images and RUU's. Tried the RUU for my HTC One S, it downgraded my radio hboot...everything to an earlier stock version. Still nothing works.
it changed my device serial number into chinese characters. my phone number is displayed correctly under phone identity.
Anyone have a soloution to this??
just_one said:
Hello guys I need your help, Yesterday I was flashing MIUI ROM for my SM-N900W8 and it was not succesful, so I tried to restore the backup I did before flashing, but the problems started when TWRP did not allowed me to restore, it said Fail... after that I installed the Stock Rom from Odin and everything went ok until I was configuring the phone and when I was willing to connect to my wifi it appeared an error "Unfortunately Remote controls stopped" and the wifi turned to grey and I was not able to use it...
I flashed another stock rom (with operator) and the same issue, searching in the web I was a little deep about knowing what was happening and I realized my Serial Number changed, My IMEI is ok, but the problem persist. I need your help about this and restoring back again my phone. Thanks a lot
Click to expand...
Click to collapse
In fact the S/N can easily be changed if your phone was rooted. But it is not relating to the wifi issue.
So you may have to try another firmware or another baseband.

Really need help with S4 i9500

Hi everyone,
My S4 has lost its IMEI, and here is my situation.
I was using Prism v14 (http://forum.xda-developers.com/showthread.php?t=2537515), and it was totally fine. Last night, I tried to flash a new S6 port rom, this http://forum.xda-developers.com/galaxy-s4/i9500-develop/rom-aurora-s6-port-t3063408, and my fone lost its signal. The signal icon is still full, but it was only available at emergency calls. When i check, IMEI and Serial number were still there. I tried flashing the Prism v14 again, didnt fix it.
Then I took my fone to the care center and left it there for a few hours. When i come back, they told me that, they flashed it back to stock, and when i ceck, the IMEI was gone. They explained that, when I flashed the S6 port rom, the real IMEI was gone, it was only the fake IMEI from the rom that I saw (didnt know if this was true).
So now im asking for any possible help/solution. I was bad to forget backing up my EFS. So i wonder if I can use someone else's EFS to restore? If yes, it would be great if any one can share with me the EFS backup.
Thank you for reading and please excuse my bad English.
The EFS folder doesn't store the IMEI, despite having an IMEI folder, thus it won't help you. nv_data.bin also will not be found there, if my S4 is any indicator, but will be found in the hidden partitions.
You'll need to try flashing the baseband for your device again, and to do that you're going to have to download a copy of the ROM, which should be found on the forums here. Sometimes the baseband needs to be flashed twice for everything to properly work. I can only speculate why that is, but I believe it to be due to having two hidden partitions for the baseband. When the baseband is copied into the first partition it isn't copied into the second, resulting in a mismatch. Flashing the baseband a second time writes the baseband to the second partition, and everything functions correctly.
If flashing the modem again does not work, getting your IMEI back will require using methods that cannot be discussed here on XDA.

Out of Service Network most of the time after flashing custom ROM

I hope I am posting in the right section.
I have a Samsung Galaxy S4 (I9505) and it was crashing on the stock ROM so I flashed the Imperium LL Rom v11.0. The problem I am having is my phone reporting no network signal or "Out of service". But not always. After a reboot I usually have network signal. After locking and unlocking the phone I never have. The signal usually comes within a few minutes. When my phone is reporting "Out of service" I cannot make calls but I can still receive calls. And after the received call has terminated I can still not make calls. After a few minutes the network signal icon comes and I can make calls. Until I lock my phone because it gets lost everytime.
Some info:
1. I was on a rooted Stock 4.2.2 before I flashed the Imperium LL Rom.
2. The IMEI seems to have changed. I never took note of it before flashing, so it might have always been different but the IMEI reported by the phone is different from the IMEI on the sticker underneath the phone battery. I tried the Xposed IMEI changer but the problem still happens so this may be unrelated.
3. While searching I found it could be an invalid Modem driver. In the settings the Baseband version is I9505XXUBMEA so I tried flashing the driver for that version using ODIN. No change.
4. I tried via Recovery to flash Slim80 Kernel Cleaning Script v1.9 and then the Imperium Kernel v3.3 but no change.
I did a factory wipe before flashing the firmware.
Any help or suggestions please?
Thanks!
I have actually solved this. What I had tried before was flashing the modem with the same Baseband I had previously ie: I9505XXUBMEA thinking that there were specific versions which needed specific drivers. Upon reading more I found out that newer versions of the modem should be installed and that XX was a carrier code and the last 2 letters are how recent the driver is. So I tried the latest modem (XXUHOE2) I could find similar to the Imperium Build which is XXUHOJ2 and it seems to be working. My phone retains the network signal when put to sleep.
The fact the IMEI changed is weird and I don't know if it makes a difference. Maybe it was always like this..but it is strange that it is different to the one on the sticker. The format is correct because only the last 4 digits differ.
Anyway I hope this info helps someone with similar problems.
How can I mark the title for this as [Solved]? I can't find any way.

samsung a510f not registered on the network

Hi guys I have a problem on my samsung a510f. the phone works properly it's just a bit of time has a problem! after a call placed loses the signal and says (not registered on the network) are forced to restart or put into airplane mode, but the next phone call the problem persists, I tried them all even with changing imei imei changer because I thought that the My iMEI was corrupt but nothing! I did downgrade from 6.0.1 to 5.1.1 but no, I put costom rom but the problem remains, can anyone help me? thanks
I forgot all this has started to happen when the phone was still the original was missing from the root I now had to do to change rom
guys no one can help me?
dont touch the IMEI stuff, you usually either make a backup of it or just stay away from it.
Look what baseband you have, and what bootloader, chances are sometimes they fail to flash, especially after a custom intervention.
I have only tried to change imei thought it was corrupt ... baseband and bootloader are fine....This problem I had since before I performed the root

samsung s7 edge lost imei info?

hi all
my partners s7 edge was running very slow so i flashed the stock firmware yesterday and now its lost IMEI information. i have followed guide on here and tried all 3 steps (reflashing rom etc) however whenever i try backing up EMS it fails saying there is no EMS file, she cannot make any calls as its not registering on the network. please can someone help with this???
rumel2011 said:
hi all
my partners s7 edge was running very slow so i flashed the stock firmware yesterday and now its lost IMEI information. i have followed guide on here and tried all 3 steps (reflashing rom etc) however whenever i try backing up EMS it fails saying there is no EMS file, she cannot make any calls as its not registering on the network. please can someone help with this???
Click to expand...
Click to collapse
Hey, I have the same problem, I guess that there's not solution yet.
Try here:
https://forum.xda-developers.com/showthread.php?t=3379516
Sent from my SM-G935F using Tapatalk
Do you a have a efs.img backup ? Or any kind of IMEI/EFS/RADIO backup ?
I had the same problem I flashed the stock ROM and somehow I lost my IMEI info, I tried everything and I was even thinking about buying a z3x box but then I decided to do a very risky move , I completely deleted all the EFS related files/info and reflashed again but now I was not able to boot because I always sent me to recovery mode saying that :
"E:Failed To Mount /EFS (invalid argument )"
Then all I did was installing TWRP and rooted my SM-G935F and then I placed my efs.img backup on my internal SD CARD and went on recovery launched the terminal and wrote this :
dd if=/sdcard/efs.img of=/dev/block/platform/155a0000.ufs/by-name/EFS
Then I wrote reboot and it finally my phone was booting and I recovered my IMEI and was able to use my phone normally.
This only works if you have a backup of your EFS, and even if you do is risky , but I did it because I lost all hope and was accepting the fact that my phone would just become a useless wifi only device .
So there is not a fix yet for this problem ?
I have a problem on my s7edge instead. If i have valid imei i'am almost always in emergency calls, and when the signal comes back does not go into mobile data connection. With the wi fi no problem.Can someone help me i'am going crazy.!
IMEI, Network Signal and Baseband is misssing
Re: IMEI, Network Signal and Baseband is misssing
IMEI, Network Signal and Baseband is misssing
Hi
I am ready to donate if any expert can help me to restore IMEI.
I am using SM-N9500 samsung note 8 model - hongkong version, i frequently change the roms.. when last time i tried to install a custom rom i lost IMEI. i am getting error like IMEI-unknown, baseband- unknown, no network and sim cards not working..
i tried installing stock rom, custom roms, it was installing successfully but only baseband, signal and IMEI are not working. i didnt even back up my EFS folder. So, kindly help me to get back my IMEI.
I have installed stock rom, still no IMEI. now i rooted my mobile and taken EFS backup. is it enough? if yes, pls suggest me the next steps. I also tried installing combination firmware, though is not working, installation was successful and also i am able to see the factory binary logo, after which it will switch off automatically and boot loops. everytime it will open factory binary and immediately it will switch off automatically..
Build number - R16NW.N9500ZHS4CRJ1

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