Develop Bugs

[Help] Phone won't detect sim. Unknown Baseband and IMEI

So... I seem to be having the efs corruption issue with my co-worker's phone. I've been searching all over and have found how others have solved the problem, but it seems that our nv_data.bin is not located in our efs directory.
Does anyone have any idea where these files are? I need to check the last modified dates of their backup files to see if I can restore them >.<
Any help is greatly appreciated!!

Bump.. If anyone knows where these files are this could help us from running into the corrupt efs problem that many people have had. Usually backing up your efs prevents your phone from becoming unable to function as a phone.
I do remember reading something about our unlock code not being present in our nv_data.bin.. And when I check my efs folder in both my, as well as my co-worker's phone there is no nv_data.bin so maybe it has been relocated??
Anyone with knowledge on this subject.. your input would be greatly appreciated! I'm also gonna read over the unlock threads to see if there is any relevant info there.

I am having this problem now, I know you posted this over a month ago, but please tell me you know the location of the backup files or any other solution for this?'
Thank you,

[Q] T989 - Baseband and IMEI Unknown
I have searched and read many threads already. I understand the i9100 uses a file called nv_data.bin and requires its .bak file for a fix.
But, I dont think the t989 is the same because these files dont seem to exist, or at least not in the locations the threads for i9100 state. I am wondering if anyone has had this problem and/or how they fixed it. I know it was caused because of trying to unlock, but I'm looking for a solution.
Thanks!

just buy one of those $20 online unlock or go to your local phone kiosk to have it unlocked
any one with a machine to unlock Samsung phones can get this phone unlocked easily
there's no software unlock yet, as you have found on your searches

I have T-Mobile and don't really care for the unlock, it was a mistake. At this point, I just want to fix the unknown IMEI and unknown Baseband issue. Because of this problem my phone cannot get a signal... Will performing a machine unlock fix this problem?
Note: When I type in *#06# the response is not my IMEI number. It says "null"

svahora said:
I have T-Mobile and don't really care for the unlock, it was a mistake. At this point, I just want to fix the unknown IMEI and unknown Baseband issue. Because of this problem my phone cannot get a signal... Will performing a machine unlock fix this problem?
Note: When I type in *#06# the response is not my IMEI number. It says "null"
Click to expand...
Click to collapse
You can try to find someone locally with a SPT Box2. This unit can flash, unlock & repair IMEI on SGH-T989(d). I was gonna pick one up, but they are like $250 yikes !!

KillaHurtz said:
You can try to find someone locally with a SPT Box2. This unit can flash, unlock & repair IMEI on SGH-T989(d). I was gonna pick one up, but they are like $250 yikes !!
Click to expand...
Click to collapse
What does the (d) stand for?
And, how can I make sure this never happens again in the future? I know there are backup options out there (CWM, Nandroid), but are there any that make a complete clone of the phone's image? In case I mess up the efs or IMEI files again I can restore and be ok.
Thanks!

T989D = Canadian release of T989
they are identical, the just use the D for Canadian

AllGamer said:
T989D = Canadian release of T989
they are identical, the just use the D for Canadian
Click to expand...
Click to collapse
Would a Nandroid backup fix this in the future?

is hard to say, we have no idea where is the real IMEI information is being stored in the new models, but is no longer in the old EFS folder

AllGamer said:
is hard to say, we have no idea where is the real IMEI information is being stored in the new models, but is no longer in the old EFS folder
Click to expand...
Click to collapse
I wonder if the new Galaxy Nexus has its IMEI files stored similarly. If so, we can join forces with that forum group.

If Android is not mounting your firmware properly in the system this will cause no baseband and no imei detected. i would try and flash the stock rom to make sure.

-Mr. X- said:
If Android is not mounting your firmware properly in the system this will cause no baseband and no imei detected. i would try and flash the stock rom to make sure.
Click to expand...
Click to collapse
Did it twice, the stock rom, modem, and kernel.

The radio (modem firmware) might have got corrupted if somebody tried to flash international GS2 ROM or modem.
Try to flash only the Radio (KL1 is the latest for T-Mobile) via ODIN (use PDA slot).

cyberjam said:
The radio (modem firmware) might have got corrupted if somebody tried to flash international GS2 ROM or modem.
Try to flash only the Radio (KL1 is the latest for T-Mobile) via ODIN (use PDA slot).
Click to expand...
Click to collapse
Would the KL1 work any different than the older one? I tried ODINing the original one, and it didn't work and increased the count so I didn't try the KL1.

I just got my replacement phone yesterday for this same problem. Flashed the stock kernal, and also the modem just to be safe and nothing would fix it. From what I know its just a hardware issue, not software. I was chatting with samsung and t-mobile people about this trying all kinds of fixes to nothing left but hardware defect.

T-mobile S4 Stock Android 4.3, Cannot Unlock, IMEI unknown after attempt by localshop

Hi All,
I had purchased T-Mobile Samsung Galaxy S4 (SGH-M919) with Stock android 4.3 while I was in usa, and want to use it in my home country now as I have left usa. I couldn't found any unlock solution on internet for stock android 4.3, and T-Mobile would not give me the unlock code. I tried third party services to provide unlock code and it did not work either. So I went to a local shop, and he screwed everything up. When I went back to the local shop to receive my phone (hoping it might have been definitely unlocked by them), he told me that he tried to downgrade it to 4.2.2 but it did not work (only after reading through all the forums I realize there is no way to go back to stock 4.2.2 if you are on stock 4.3 because of knox / bootloader issues on 4.3, leads me to think the shopowner did not really do his research before touching my phone, and no, he did not do any EFS backup). In an attempt to unlock my phone, he also flashed Metro PCS stock ROM on my phone, not to mention, my IMEI number is also 'Unknown' now. I managed to get back on T-Mobile stock 4.3 ROM now but still IMEI is unknown. I also tried to go to nearest Samsung center and they said they would not touch international phone models. At this point I have no idea what to do. Any suggestions how to get back my IMEI and or at the least to get the phone working to my country's network?
Thanks.

Try flashing the mk2 modem using odin. That may work but not sure.
Sent from my SGH-M919 using Tapatalk

Shop just need to pay you for new phone.
☞ Sent from here☜???

I won't provide a link but there are ways to restore your imei and as for unlocking I have used fast gsm dot com and it has worked every time. I hope u get ur issues fixed. Good luck
Sent from my SGH-M919 using Tapatalk

sd_N said:
I won't provide a link but there are ways to restore your imei and as for unlocking I have used fast gsm dot com and it has worked every time. I hope u get ur issues fixed. Good luck
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Hi sd_N, is it possible for you to provide me the link in private so I can just restore my original imei. I will then try fastgsm.com to unlock as you suggested. Thanks.

Anyone?

galaxysiv said:
Anyone?
Click to expand...
Click to collapse
Did you ever make any nandroid backups through recovery or save your /efs?

xdapowerapps said:
Did you ever make any nandroid backups through recovery or save your /efs?
Click to expand...
Click to collapse
Hi xdapowerapps, no I did not, I didnt knew the local shop would try to downgrade or flash METRO PCS rom on it :crying:

galaxysiv said:
Hi xdapowerapps, no I did not, I didnt knew the local shop would try to downgrade or flash METRO PCS rom on it :crying:
Click to expand...
Click to collapse
The local shop broke it. Tell them to pay for it.
Also, the only reason T Mobile won't give you an unlock code is if the phone isn't paid for in full. If the phone is paid for in full, they HAVE to give you the unlock code.
Are you sure you didn't buy the phone in the US, then leave the country without paying the bill so you could use the phone internationally without paying full price? If not, there is no reason T Mobile wouldn't give you the unlock code. So there's some missing information in this story.
Also, we do not discuss how to change IMEI's on XDA. The only thing permissable on XDA about flashing IMEI's is restoring YOUR OWN IMEI from a backup. That is done by restoring the EFS partition. But you didn't have a back up so you can't do that. That means anyway to fix your IMEI involves what is an illegal hack and that discussion is expressly not permitted on XDA. That information is used for illegal purposes and XDA is not going to be the place where it's shared for legal reasons.

Skipjacks said:
The local shop broke it. Tell them to pay for it.
Also, the only reason T Mobile won't give you an unlock code is if the phone isn't paid for in full. If the phone is paid for in full, they HAVE to give you the unlock code.
Are you sure you didn't buy the phone in the US, then leave the country without paying the bill so you could use the phone internationally without paying full price? If not, there is no reason T Mobile wouldn't give you the unlock code. So there's some missing information in this story.
Also, we do not discuss how to change IMEI's on XDA. The only thing permissable on XDA about flashing IMEI's is restoring YOUR OWN IMEI from a backup. That is done by restoring the EFS partition. But you didn't have a back up so you can't do that. That means anyway to fix your IMEI involves what is an illegal hack and that discussion is expressly not permitted on XDA. That information is used for illegal purposes and XDA is not going to be the place where it's shared for I also still see the imei folder inside EFS with a file mps_code.bat, but no nv files. (The imei folder was not regenerated on deletion either) Am I missing something? also still see the imei folder inside EFS with a file mps_code.bat, but no nv files. (The imei folder was not regenerated on deletion either) Am I missing something? egal reasons.
Click to expand...
Click to collapse
Hi skipjacks, thanks for responding. Nothing is pending with t-mobile, I was on prepaid account. I bought the phone like 10 days before leaving usa (due to emergency). T-mobile says my number on this new device should have being working for at least 45 days or so with refill balance. My cycle ended after 15 days of purchase and I really didnt see any reason to refill it as I was no more in usa. And no, I dont want to CHANGE my IMEI, only want to restore my own IMEI only. I am not sure if my EFS partition is corrupted, because I rooted my phone tried to backup EFS folder now (I know its too late but still), deleted it and rebooted (as a few threads suggested it would regenerate nv data files), but neither did I see any nv files when I did a back up now, nor after I rebooted. When I rebooted, the EFS folder did regenerate but there were no nv files in there. Also, after deleting EFS and regeneration the serial number was corrupted, but when I restored my backup, the serial number showed up correctly again. Also my current backup contains the imei folder with mps.code_bat file. I noticed that even imei folder was not regenerated on deletion of EFS and reboot. I somehow have the feeling that this is still indicating that my original EFS folder is still present (though I may be wrong, because I dont know). But my concern is the nv data files, which I dont see anywhere. I did come across several threads about imei corruption and restoration, but the only one I didnt come across was T-mobile SGH-M919 with stock android 4.3. I am wondering if this has some different file storage structure for imei (which again I dont know). At this point I am concerned about getting back my imei, I can get the unlock code from some reputed paid service again. I understand that open discussion about imei involving anything CHANGING IMEI is not allowed here. If anyone could just help me out restoring my original imei, even by pm, I would really appreciate it. I just dont want to throw away the phone and lose my money because of the error done by repair shop.

galaxysiv said:
Hi skipjacks, thanks for responding. Nothing is pending with t-mobile, I was on prepaid account. I bought the phone like 10 days before leaving usa (due to emergency). T-mobile says my number on this new device should have being working for at least 45 days or so with refill balance. My cycle ended after 15 days of purchase and I really didnt see any reason to refill it as I was no more in usa. And no, I dont want to CHANGE my IMEI, only want to restore my own IMEI only. I am not sure if my EFS partition is corrupted, because I rooted my phone tried to backup EFS folder now (I know its too late but still), deleted it and rebooted (as a few threads suggested it would regenerate nv data files), but neither did I see any nv files when I did a back up now, nor after I rebooted. When I rebooted, the EFS folder did regenerate but there were no nv files in there. Also, after deleting EFS and regeneration the serial number was corrupted, but when I restored my backup, the serial number showed up correctly again. Also my current backup contains the imei folder with mps.code_bat file. I noticed that even imei folder was not regenerated on deletion of EFS and reboot. I somehow have the feeling that this is still indicating that my original EFS folder is still present (though I may be wrong, because I dont know). But my concern is the nv data files, which I dont see anywhere. I did come across several threads about imei corruption and restoration, but the only one I didnt come across was T-mobile SGH-M919 with stock android 4.3. I am wondering if this has some different file storage structure for imei (which again I dont know). At this point I am concerned about getting back my imei, I can get the unlock code from some reputed paid service again. I understand that open discussion about imei involving anything CHANGING IMEI is not allowed here. If anyone could just help me out restoring my original imei, even by pm, I would really appreciate it. I just dont want to throw away the phone and lose my money because of the error done by repair shop.
Click to expand...
Click to collapse
First off....the enter key is your friend. Hit it every so often when typing giant blocks of text like that. :laugh:
Second, since your IMEI has been deleted, you now have to change it, even if you just want to change it back to what it was before. The process to fix it now is what can't be discussed here.
IF you had backed up your EFS partition, then it would be as simple as restoring it in recovery. That's all well and good. But your IMEI is now 0, so you have to change it to what it was.
But all that aside, you went to a store and they broke it. Take it back there and raise holy hell until they fix it for you or buy you a new one. I know consumer protections are stronger in some countries than others, but wherever you are, yelling and screaming is a universal language.

Skipjacks said:
First off....the enter key is your friend. Hit it every so often when typing giant blocks of text like that. :laugh:
yelling and screaming is a universal language.
Click to expand...
Click to collapse
You
learn
new
things
every
day. :silly:

Can someone at least tell me what file in T-Mobile Galaxy S4 SGH-M919 Stock Android 4.3 contains imei number, so at least I know if I even have that file or not or whether it is missing? Thanks.

galaxysiv said:
Can someone at least tell me what file in T-Mobile Galaxy S4 SGH-M919 Stock Android 4.3 contains imei number, so at least I know if I even have that file or not or whether it is missing? Thanks.
Click to expand...
Click to collapse
Whether your file is missing, modified, or corrupted, you need your /efs folder to restore it. You do not have have a nandroid backup or the /efs folder. I am sorry but the simplest we can put it without sounding harsh, you're screwed. You need to request the local shop give you a replacement phone or credit to get a new one.

Update: I went back to the shop and told them "You broke it, you fix it, I don't know how and I don't care, you gotta fix it". They managed to fix the imei number somehow. Regarding unlock, the shop ended buying the unlock code themselves. They mentioned that no one is able to unlock T-Mobile S4 with Stock 4.3 as of now without unlock code, unless they have some device like Z3x box. The phone is finally unlocked and working fine on my network. (YES, A HUGE HUGE RELIEF).
Everything is fine, except for 2 issues.
1. I want to backup my EFS folder so that I don't enter into trouble with IMEI again. I tried EFS Pro, but its not working. All I see is "'Initializing ADB server..." (the phone is rooted, usb debugging mode enabled, and supersu permission granted when prompted). I also tried to backup using Andromizer, but it says "Notification: File not found in /storage/emulated/0/Amdromizer/efs/efs.img". What is my best option as of now to backup and store my imei safely somewhere?
2. I am having issues with Wi-Fi. Before the shop flashed my phone, it was all good, but now it doesn't auto-connect to my home Wi-Fi anymore. Everytime I reboot or get out of range, I have to manually select my home network everytime and also enter the password everytime. Nothing has changed on my router. The other Samsung device that I have still auto-connects to my home Wi-Fi as usual. How can I fix this?
Thanks.

galaxysiv said:
Update: I went back to the shop and told them "You broke it, you fix it, I don't know how and I don't care, you gotta fix it". They managed to fix the imei number somehow. Regarding unlock, the shop ended buying the unlock code themselves. They mentioned that no one is able to unlock T-Mobile S4 with Stock 4.3 as of now without unlock code, unless they have some device like Z3x box. The phone is finally unlocked and working fine on my network. (YES, A HUGE HUGE RELIEF).
Everything is fine, except for 2 issues.
1. I want to backup my EFS folder so that I don't enter into trouble with IMEI again. I tried EFS Pro, but its not working. All I see is "'Initializing ADB server..." (the phone is rooted, usb debugging mode enabled, and supersu permission granted when prompted). I also tried to backup using Andromizer, but it says "Notification: File not found in /storage/emulated/0/Amdromizer/efs/efs.img". What is my best option as of now to backup and store my imei safely somewhere?
2. I am having issues with Wi-Fi. Before the shop flashed my phone, it was all good, but now it doesn't auto-connect to my home Wi-Fi anymore. Everytime I reboot or get out of range, I have to manually select my home network everytime and also enter the password everytime. Nothing has changed on my router. The other Samsung device that I have still auto-connects to my home Wi-Fi as usual. How can I fix this?
Thanks.
Click to expand...
Click to collapse
For the efs you can back it up using recovery. Just boot to recovery and its one of the options in the backup menu. The resulting file will be like a few KB. Its supposed to be small. Dont worry
Sent from your phone. You should be more careful where you leave that thing.

Tmobile gave me an unlock code and my phone isn't paid for but I used the region lock away app before I got the unlock code and it worked but u got to be rooted
Sent from my SGH-M919 using xda app-developers app

[Q] imei 0

Hey guys I bought my sg3 about 3 months ago from a friend who had cynogen mod on the phone and it worked fine but I had cynogen mod on auto update and now my imei shows as 0 via *#06# and I cant call or text etc. Unfortunately I do not have a backup from when the imei worked because I didnt expect it to do this. So far Ive removed cynogen mod and reset it to stock firmware but im having the same issue any suggestions?
Its the SGH1747 version

dolee said:
Hey guys I bought my sg3 about 3 months ago from a friend who had cynogen mod on the phone and it worked fine but I had cynogen mod on auto update and now my imei shows as 0 via *#06# and I cant call or text etc. Unfortunately I do not have a backup from when the imei worked because I didnt expect it to do this. So far Ive removed cynogen mod and reset it to stock firmware but im having the same issue any suggestions?
Its the SGH1747 version
Click to expand...
Click to collapse
Your baseband is probably corrupted. You may try reflashing a stock modem/baseband via recovery. I had a similar problem once, although I was on stock ROM, and re-flashing the modem zip worked.
I, however, tread very carefully here as I am aware the forum is wary about discussions relating to IMEI.

Larry2999 said:
Your baseband is probably corrupted. You may try reflashing a stock modem/baseband via recovery. I had a similar problem once, although I was on stock ROM, and re-flashing the modem zip worked.
I, however, tread very carefully here as I am aware the forum is wary about discussions relating to IMEI.
Click to expand...
Click to collapse
yeah im not trying to change it which isnt allowed just tryin to figure out how to do what you said could you list me some steps or link me how to do this?

dolee said:
yeah im not trying to change it which isnt allowed just tryin to figure out how to do what you said could you list me some steps or link me how to do this?
Click to expand...
Click to collapse
Don't know if you're willing to pay to have this repaired but here's a site that does it. I've done stuff with them before. Very good service.
(no, I don't work for them - just a happy customer.)
http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-s-iii-imei-efs-repair/

dolee said:
Hey guys I bought my sg3 about 3 months ago from a friend who had cynogen mod on the phone and it worked fine but I had cynogen mod on auto update and now my imei shows as 0 via *#06# and I cant call or text etc. Unfortunately I do not have a backup from when the imei worked because I didnt expect it to do this. So far Ive removed cynogen mod and reset it to stock firmware but im having the same issue any suggestions?
Its the SGH1747 version
Click to expand...
Click to collapse
You can look up peoplearmy's method (google it). You will not find help on how to fix IMEI on XDA. I had my IMEI wiped out a while back after flashing a bad rom. I had to get it put back, and then had to get LTE back.
Good luck.

dolee said:
yeah im not trying to change it which isnt allowed just tryin to figure out how to do what you said could you list me some steps or link me how to do this?
Click to expand...
Click to collapse
Can you go to Settings => About Device and see what you have under Baseband version? Whilst you are there, also check what Android version it says and the build number.

Larry2999 said:
Can you go to Settings => About Device and see what you have under Baseband version? Whilst you are there, also check what Android version it says and the build number.
Click to expand...
Click to collapse
android 4.3 base band 1747MVLUEMK5 build # JSS15J.1747MVLUEMK5

dolee said:
android 4.3 base band 1747MVLUEMK5 build # JSS15J.1747MVLUEMK5
Click to expand...
Click to collapse
Everything looks OK as your baseband version would likely read 'unknown' if it's bad. You may, however, still try re-flashing the modem via the method posted in the attached thread ... Please proceed at your own peril as I offer no guarantee that this will work or will not result in damaged phones,
http://forum.xda-developers.com/showthread.php?t=1831898
Please note you will need custom recovery (e.g. CWM or TWRP). You will find instructions for installing custom recovery at the bottom of the thread. If this doesn't work, then you may try doing a hard wipe from recovery and reinstalling everything including system ROM, modem and kernel.
Hope it works out for you.

Simple fix is to reinject imei which located behind the battery.. But sometimes for some reason if you do this, you'll stuck with edge network, can be fix though but you gotta go back to stock in order to do so
Sent from my SAMSUNG-SGH-I747 using Tapatalk

LARMYV said:
You can look up peoplearmy's method (google it). You will not find help on how to fix IMEI on XDA. I had my IMEI wiped out a while back after flashing a bad rom. I had to get it put back, and then had to get LTE back.
Good luck.
Click to expand...
Click to collapse
I'm in the same boat as you once were. I lost my imei and had to inject it back, now I have no LTE service anywhere.. It says LTE but no internet connection. Any help? Sorry if I threadjacked here but I've been dealing with this for a year now and I really need a solution...

karmasblade said:
I'm in the same boat as you once were. I lost my imei and had to inject it back, now I have no LTE service anywhere.. It says LTE but no internet connection. Any help? Sorry if I threadjacked here but I've been dealing with this for a year now and I really need a solution...
Click to expand...
Click to collapse
you will have to google peoplearmy imei lte and find the tutorial on how to restore imei and get LTE back.
You will not be able to find the thread on XDA because XDA deleted it sometime ago. I was like you and lost my imei. Once I re-injected it using a tutorial on XDA, I was stuck on edge. Then I finally found peoplearmy's tutorial, downloaded the programs and followed the steps to get LTE back. I got it back and haven't lost it since.

LARMYV said:
you will have to google peoplearmy imei lte and find the tutorial on how to restore imei and get LTE back.
You will not be able to find the thread on XDA because XDA deleted it sometime ago. I was like you and lost my imei. Once I re-injected it using a tutorial on XDA, I was stuck on edge. Then I finally found peoplearmy's tutorial, downloaded the programs and followed the steps to get LTE back. I got it back and haven't lost it since.
Click to expand...
Click to collapse
I can't find the link, can you PM me it?

I had that happen to me with a 0 on my phone and was able to get it back I had no backup either what I did is go on the NV Data restore or NV writer thread and downloaded the NV writer and put myself back on stock ...I went thru a few pages in the post and someone had a file where you could put your IMEI into that file maybe it was set up thru notepad but you could fill in the zeros with your IMEI and name it I think a txt.file after then open the NV writer and instead of backing it up cause you can't just restore that file where you fill in you're IMEI and it went right back into my phone. There also a video on that page how to do it. You just need basically that file to put your IMEI back in. I might still have it if not keep going thru the post took find it. There a picture of what it looks like to restore if you list it but every time I tried to open that link to restore it wouldn't let me. Hope it wasn't to confusing but it's basically a white box with a bunch of zeros and replace the zeros with your IMEI and save it as atxt. File I believe and just restore it as shown in the video for backing it up but just restore instead it does work cause I didn't have an IMEI on my phone it just had a zero
---------- Post added at 10:53 PM ---------- Previous post was at 10:48 PM ----------
http:// http://forum.xda-developers.com/showthread.php?t=1804117

NV writer
heres the NV txt file to write your IM?EI back to the phone.extract the zip.

britt21 said:
heres the NV txt file to write your IM?EI back to the phone.extract the zip.
Click to expand...
Click to collapse
could you link the video or the thread with the video?
instructions werent so clear

dolee said:
could you link the video or the thread with the video?
instructions werent so clear
Click to expand...
Click to collapse
I believe this is it. http://forum.xda-developers.com/showthread.php?t=1804117

karmasblade said:
I believe this is it. http://forum.xda-developers.com/showthread.php?t=1804117
Click to expand...
Click to collapse
?
I got a message saying failed phone did not answer when writing any ideas

N7105 factory mode

Hi guys, i seriously need help here. Please refer to attached screenshot.
I came here after flashing sokp 4.2.2 rom, and it prompted me an error saying encryption was unsuccessful. After which, i wasnt able to use my phone since then.
I tried to flash stock rom, and I end up with this. Please dont tell me to search the forums because Ive been to them countless times. I suppose this is a efs issue, because baseband and imei are unknown and I do not have a backup for it. Tried with the writing tool for imei, doesnt work as well.
Pls ask me for any info u might need/i missed out to help with this issue.

I think it's in the efs folder, you have to use a root browser and edit factory mode to off instead of on. It's been a long time since I saw factory mode so I'm not 100%
Sent from my GT-N7105 using Tapatalk

sawdoctor said:
I think it's in the efs folder, you have to use a root browser and edit factory mode to off instead of on. It's been a long time since I saw factory mode so I'm not 100%
Sent from my GT-N7105 using Tapatalk
Click to expand...
Click to collapse
Thanks for your reply. But even if I off factory mode, will the baseband and imei be unknown?

I'm not sure but if it doesn't the 2 things that might be worth trying are, emergency firmware recovery with kies or mskips toolkit has a rescue package but I think you have to go to skipsoft.net now as the thread was closed
Sent from my GT-N7105 using Tapatalk

It's current value is "OFF"...u have to write "ON"...i know it sounds weird but that is the value. Amd if u don't have any previous back up of EFS then there's nothing u can do at home to bring it back. Same thing happened to mine and i got it repaired from a local shop for cheap...they used z3x box...the problem is my IMEI is correct and network works fine...but everytime i flash a ROM i have to take it to the shop and get the modem patched or else it doesn't connect to network. So go to Samsung service centre and get it fixed by them...they'll charge u more but their fix is permanent.
Sent from my GT-N7100 using XDA Free mobile app

Alright, it seems like i have a backup of the efs, bt the nv_data.bin file is not included, and i read on other threads that this file is responsible for the imei and all? This backup is dated in aug2013, but it doesnt help in restoring my phone because the efs pro software doesnt see this as a backup file. Im actually looking for one of the thread that actually taught how to edit the nv_data.bin file, but no luck till date.

This thread might help
http://forum.xda-developers.com/showthread.php?t=1946915
[WARNING! + GUIDE] Backup and Restore IMEI / NV Data Procedure for GT-I9305. There is another post in this thread where they flashed the param.bin file
Check out the last post in this thread
http://forum.xda-developers.com/showthread.php?t=2724169
[Q]Null Imei, Baseband Unknown N7105
Sent from my GT-N7105 using Tapatalk

is it safe to flash the file that is intended for i9300? i dare not do that in case it doesnt work coz is different models.

ok my phone's all fixed up now. If anyone is interested to know, samsung kies original firmware helped.

Galaxy S20 ultra G988B/DS SIM Network Not available (status ng) after flashing stock ROM

Hi Guys !
Greetings to y'all!!!
I'm honored to be a part of this prestigious community at last and looking forward to give back, someday soon. My huge respect for all the contributing members, I have been using this forum to get help since 2016 and without even posting anything I've always managed to get helpful information to resolve every problem encountered till now ((rooting & flashing)).
:'D
So here goes my first thread:
A friend of mine recently tried flashing stock ROM on his SM-G988B/DS since his update firmware option wasn't working for some reason. Even though it was a success, in doing so he flashed wrong version of firmware and caused network failure, flight mode if tapped got stuck (greyed) (wrong modem was flashed). There was no backup and original firmware number wasn't mentioned so I tried flashing different versions of firmware (U1,U2,U3,U4 & U5) and finally got it working on flashing CP(modem file) of G988BXXU5BTJ3.
However, for some reason I still was unable to make a call, so I searched for it and found out that by dialing *#0011# my IMEI status is NG which is bad , even though my IMEI number is still intact as found on the back of the phone. I researched a bit further and found out that this has something to do with the EFS file and whilst going through comments in another forum I found someone else had the same issue and got resolved by deleting nv_data.bin file and its backup and IMEI folder in EFS file after rooting and reflashing stock ROM. I tried the same but found that nv_data.bin was missing in EFS folder, so I backed up EFS file and deleted just the IMEI folder in it and reflashed stock ROM, have tried flashing different CP versions aswell still no success .
I've seen some videos of Chimera IMEI rewriting and certificate patching and Z3X tool on youtube but in their case IMEI is missing and I don't want to go for those solutions for the instance. I'm wanting to learn from all this exercise and want to know whether what is what and how to resolve this manually (maybe by writing some hex code or script etc) if possible.
Summarized:
Phone: SM-G988B/DS
ROM: Stock (G988BXXU5BTJ3) (rooted)
Status: SIM Card Registration failure ( IMEI status NG)
IMEI : Intact (As on the back of the phone)
EFS file ( nv_data.bin and .bak missing)
Previous Status: SIM Card was working fine before flashing ROM
Your valuable suggestions in this regard shall be highly appreciated.

bro did u find any fix

Hey I've got exactly they same problem as you with an S10 Plus, did you find any way to fix it ?

hamzaaslamkhank said:
Hi Guys !
Greetings to y'all!!!
I'm honored to be a part of this prestigious community at last and looking forward to give back, someday soon. My huge respect for all the contributing members, I have been using this forum to get help since 2016 and without even posting anything I've always managed to get helpful information to resolve every problem encountered till now ((rooting & flashing)).
:'D
So here goes my first thread:
A friend of mine recently tried flashing stock ROM on his SM-G988B/DS since his update firmware option wasn't working for some reason. Even though it was a success, in doing so he flashed wrong version of firmware and caused network failure, flight mode if tapped got stuck (greyed) (wrong modem was flashed). There was no backup and original firmware number wasn't mentioned so I tried flashing different versions of firmware (U1,U2,U3,U4 & U5) and finally got it working on flashing CP(modem file) of G988BXXU5BTJ3.
However, for some reason I still was unable to make a call, so I searched for it and found out that by dialing *#0011# my IMEI status is NG which is bad , even though my IMEI number is still intact as found on the back of the phone. I researched a bit further and found out that this has something to do with the EFS file and whilst going through comments in another forum I found someone else had the same issue and got resolved by deleting nv_data.bin file and its backup and IMEI folder in EFS file after rooting and reflashing stock ROM. I tried the same but found that nv_data.bin was missing in EFS folder, so I backed up EFS file and deleted just the IMEI folder in it and reflashed stock ROM, have tried flashing different CP versions aswell still no success .
I've seen some videos of Chimera IMEI rewriting and certificate patching and Z3X tool on youtube but in their case IMEI is missing and I don't want to go for those solutions for the instance. I'm wanting to learn from all this exercise and want to know whether what is what and how to resolve this manually (maybe by writing some hex code or script etc) if possible.
Summarized:
Phone: SM-G988B/DS
ROM: Stock (G988BXXU5BTJ3) (rooted)
Status: SIM Card Registration failure ( IMEI status NG)
IMEI : Intact (As on the back of the phone)
EFS file ( nv_data.bin and .bak missing)
Previous Status: SIM Card was working fine before flashing ROM
Your valuable suggestions in this regard shall be highly appreciated.
Click to expand...
Click to collapse
First, do a TWRP backup, all partitions including efs & modem.
Open the root explorer app, open the efs folder, delete the files named nv_data.bin
, nv_data.bin.md5 & the folder called imei. Then open twrp, wipe all partitions. Flash the latest firmware with Odin.

B
hamzaaslamkhank said:
Hi Guys !
Greetings to y'all!!!
I'm honored to be a part of this prestigious community at last and looking forward to give back, someday soon. My huge respect for all the contributing members, I have been using this forum to get help since 2016 and without even posting anything I've always managed to get helpful information to resolve every problem encountered till now ((rooting & flashing)).
:'D
So here goes my first thread:
A friend of mine recently tried flashing stock ROM on his SM-G988B/DS since his update firmware option wasn't working for some reason. Even though it was a success, in doing so he flashed wrong version of firmware and caused network failure, flight mode if tapped got stuck (greyed) (wrong modem was flashed). There was no backup and original firmware number wasn't mentioned so I tried flashing different versions of firmware (U1,U2,U3,U4 & U5) and finally got it working on flashing CP(modem file) of G988BXXU5BTJ3.
However, for some reason I still was unable to make a call, so I searched for it and found out that by dialing *#0011# my IMEI status is NG which is bad , even though my IMEI number is still intact as found on the back of the phone. I researched a bit further and found out that this has something to do with the EFS file and whilst going through comments in another forum I found someone else had the same issue and got resolved by deleting nv_data.bin file and its backup and IMEI folder in EFS file after rooting and reflashing stock ROM. I tried the same but found that nv_data.bin was missing in EFS folder, so I backed up EFS file and deleted just the IMEI folder in it and reflashed stock ROM, have tried flashing different CP versions aswell still no success .
I've seen some videos of Chimera IMEI rewriting and certificate patching and Z3X tool on youtube but in their case IMEI is missing and I don't want to go for those solutions for the instance. I'm wanting to learn from all this exercise and want to know whether what is what and how to resolve this manually (maybe by writing some hex code or script etc) if possible.
Summarized:
Phone: SM-G988B/DS
ROM: Stock (G988BXXU5BTJ3) (rooted)
Status: SIM Card Registration failure ( IMEI status NG)
IMEI : Intact (As on the back of the phone)
EFS file ( nv_data.bin and .bak missing)
Previous Status: SIM Card was working fine before flashing ROM
Your valuable suggestions in this regard shall be
Click to expand...
Click to collapse

BRO DID YOU FIND ANYTHING

Xshaanx93 said:
BRO DID YOU FIND ANYTHING
Click to expand...
Click to collapse
yes i have fixed my galay s20 plus if u need help msg me and also it was not free coast me Rs 4000 pkr

Alejitox76 said:
Hey I've got exactly they same problem as you with an S10 Plus, did you find any way to fix it ?
Click to expand...
Click to collapse
yes i have fixed my galay s20 plus if u need help msg me and also it was not free coast me Rs 4000 pkr

You can fix NG with auto patch file and and pach cert using support tools.
PS- you can get auto patch file on paid server, Such as ROMDevelopers ETC website

merhaba bir notum var 20 ultra 5g imei durumu gitti sorunu çözemiyorum u4 sürüm ikili 4 herkes yardım edebilir mi

The issue here is you flashed wrong firmware/modem i had this problem occure to me theirs a patch i have to apply to my phone now tho

Xshaanx93 said:
yes i have fixed my galay s20 plus if u need help msg me and also it was not free coast me Rs 4000 pkr
Click to expand...
Click to collapse
I want you to fix mine