I DO have an EFS backup backed up to Google Drive before I started messing with stuff so that is a non issue. I also have the box if it can be manually programmed somehow.
Here is what happened. At work today I was on T-Mobile WiFi calling. I disabled WiFi because I wanted to use LTE (which I get strong signal at work). After disabling WiFi, the device would not connect to cellular. I rebooted the phone thinking it would fix it for sure, then the SIM card wasn't detected and my IMEI shows blank, and my baseband shows as unknown. In bootloader mode it does show the correct radio and bootloader though. Also when I go to "Barcodes" from bootloader it shows the correct IMEI, serial number, etc...
Things I have tried so far:
-Flashing the entire MOB31T Marshmallow factory image with fastboot
-Flashing the entire N6F27H Nougat factory image with fastboot
-Restoring original EFS in TWRP
-Restoring known good ROM backup of all partitions including EFS in TWRP
-Flashing different ROMs besides stock
-Flashing back and forth between different radios using fastboot
-Testing my SIM in another device (it works). Testing another SIM known to be good in my device (still shows no SIM, IMEI blank and baseband missing)
-"fastboot erase xxxxx" on the 3 EFS partitions mdm1m9kefs1, mdm1m9kefs2, and mdm1m9kefs3 and trying combinations of the above
Last ditch effort I flashed stock firmware image and locked the bootloader. Now my phone has a locked bootloader, and I can't go into developer options. I can tap it 5 times to enable the option, but then when I press it the screen goes blank.
What do you get when you dial *#06# in the phone?
If a series of numbers or null, I think it's software and I'd go back to basics flashing a complete, clean factory image. Bootloader, modem, everything. Then, if you still have the problem, again restore your EFS.
If those steps don't work taking it to a cell phone repair center may be the best choice. They should be able get you going pretty fast using their test box.
If nothing is there, I think that means you have a hardware problem. It probably means a new motherboard.
ktmom said:
What do you get when you dial *#06# in the phone?
If a series of numbers or null, I think it's software and I'd go back to basics flashing a complete, clean factory image. Bootloader, modem, everything. Then, if you still have the problem, again restore your EFS.
If those steps don't work taking it to a cell phone repair center may be the best choice. They should be able get you going pretty fast using their test box.
If nothing is there, I think that means you have a hardware problem. It probably means a new motherboard.
Click to expand...
Click to collapse
When I dial that it brings up a box that says IMEI bolded, but then nothing below it like it's empty. Then an OK button. So I'm guessing it's a hardware failure.
Dopamin3 said:
When I dial that it brings up a box that says IMEI bolded, but then nothing below it like it's empty. Then an OK button. So I'm guessing it's a hardware failure.
Click to expand...
Click to collapse
Take it to a repair center and see if they can confirm. It shouldn't cost too much just for a verification.
Try a "fastboot erase all" followed by either a flash-base (bootloader and radio), or flash-all (entire stock ROM), then wait like 5-10 minutes after the first boot and see if cellular works.
Related
Hi guys, I am officially screwed.
I had stock rom (unrooted) on my Note till yesterday. Suddenly it was just showing the GT N7000 screen and wont go forward even upon restart. Even the Samsung logo wouldn't appear on restart. So I went into recovery mode, installed PhilZ-cwm6 - Safe Stock Based Kernel from SD card, and wiped data, cache and dalvik cache and restarted without any problem. (Ofcourse all my data was gone but no problem)
After restart the Network signal was good, Data was working (could send and receive whatsapp etc.) ,however when tried to make a call it displayed "Not registered on network error".
On pressing the power button the screen turns off but does not get locked, main page is shown as it on pressing the home key.
There is no power menu too. The device would just turn off completely on pressing power button to access the power menu (Menu with restart and other options).
I flashed with custom Paranoidandroid rom but it displayed no network signal, so I tried flashing stock rom again with ODIN but the above problems still persist. Also, strangely there was no setup screen on starting the phone (which has always come on flashing a rom).
Read some where about keystr file being missing. Checked the /efs/imei/keystr it all there with text as ON in it.
Please help. I have messed up this phone many a times but was always able to recover it thansk to xda threads. I am even taking a leave from office for today.
Check your IMEI. Does it start with 0049...? The symptoms you wrote are typical for a developer IMEI.
ThaiDai said:
Check your IMEI. Does it start with 0049...? The symptoms you wrote are typical for a developer IMEI.
Click to expand...
Click to collapse
Yeah it does...am I in trouble?
tshrjain said:
Yeah it does...am I in trouble?
Click to expand...
Click to collapse
Depends...
Your IMEI isn't the original anymore (remove battery and you'll find a sticker with your original one). This happens sometimes - I never saw an explanation why and when - when you install a Custom Rom.
If you didn't backup your /efs-partition you can't get it back by yourself. There is a member who offers a solution (he connects remotely to your device/PC and restores the old number) for small money (see cvxcvx.pl).
Workarounds:
- Change your SIM Pin every time after a reboot (you can simply use your old pin as new pin again, this works). Then you'll have a working SIM and network connection.
- On a TW based ROM you'll have to use an android.policy.jar from a leaked ROM (XXLSC). I used this because it doesn't check the IMEI and so you do not have the restrictions like you wrote: no SIM Pin request, no menu, immediate Power shutdown. I used this with my Pristine Roms because I have this developer IMEI since a repair in Thailand...
- Switch back to GB, it doesn't have the IMEI check too.
My actual workaround: disabled SIM Pin and using my own build "Pristine CM10.1".
ThaiDai said:
Depends...
Your IMEI isn't the original anymore (remove battery and you'll find a sticker with your original one). This happens sometimes - I never saw an explanation why and when - when you install a Custom Rom.
If you didn't backup your /efs-partition you can't get it back by yourself. There is a member who offers a solution (he connects remotely to your device/PC and restores the old number) for small money (see cvxcvx.pl).
Workarounds:
- Change your SIM Pin every time after a reboot (you can simply use your old pin as new pin again, this works). Then you'll have a working SIM and network connection.
- On a TW based ROM you'll have to use an android.policy.jar from a leaked ROM (XXLSC). I used this because it doesn't check the IMEI and so you do not have the restrictions like you wrote: no SIM Pin request, no menu, immediate Power shutdown. I used this with my Pristine Roms because I have this developer IMEI since a repair in Thailand...
- Switch back to GB, it doesn't have the IMEI check too.
My actual workaround: disabled SIM Pin and using my own build "Pristine CM10.1".
Click to expand...
Click to collapse
Thanks, I guess I'll just need to take it to service centre. Could you please tell me how to go back to Stock ROM and Kernel so that there are no counters or root that may make Samsung ppl not repair the phone.
I was able to get back Lock screen and Power menu using instructions to recover imei here:
http://forum.xda-developers.com/showthread.php?t=1264021
with little modifications to it as I could not find original file.
However, my IMEI is still the fake one and still can't register to network.
Also the set up screen appeared on doing the above procedure.
Changing SIM Pin isn't helping in registering to network.
Earlier this week I had an unsuccessful install of the alpha CyanogenMod 13.0 rom - didn't want to be encrypted so I substituted the latest HC M kernel. wasn't the first time I couldn't get a new rom to boot so didn't initially think much about it but following that flash I couldn't get any new rom to install and successfully complete setup. Each try would get stuck at step right after wifi was set up. I eventually determined there was an issue trying to connect with Google servers. Tried a multitude of fixes but nothing worked. Ultimately I found that my IMEI and IMEI ID had been hosed and both were now 0's rather than the original IMEI number. I unfortunately did not have the efs partition backed up (at least that I could find). I have tried every method, tool, etc. I have been able to locate to repair or to re-write the IMEI to the phone but so far to no avail.
I restored the original stock software (going back to the original lmy47e on the phone when I purchased it) as well as subsequent releases with a hopeit could somehow restore the IMEI but nothing has worked. I have managed to getto where I can make and receive calls and SMS/MMS but once I'm out of wifi range, no internet access. I even have trid a new SIM from Verizon but tha made no difference. Still a bit confused as to where the IMEI value is stored (and how it could be corrupted) but at this point it looks like new phone time (already ordered a new N6 from Amazon).
Hoping maybe someone might have some suggestion that might help me out. Seems like the N6 is new enough and different enough that the usual fixes don't seem to work. I know discussions around flashing IMEI's isn't really legit on xda but I'm just trying to get back my original IMEI rather than trying to mask a problem phone.
The only accepted way to get it back is to restore a back up. Having the IMEI corrupted happens when roms flash the wrong partitions. Samsung is known for storing the IMEI in a partition that is easily corrupted or erased when flashed. Not normally a nexus issue and I'm not sure which partition the IMEI is stored under.
It is not unheard of that cm roms have some issues like this. It wasn't to long ago that they bricked some nexus.
My IMEI shows 350000000000006. Most of the advice I've seen on this is to flash the stock firmware. I've tried this multiple times and it hasn't worked for me. I don't have a backup of the EFS partition that I can restore, but I do know what the actual IMEI is. I'm not really sure where to go from here. Any help or advice would be greatly appreciated.
Cheers,
Chad
There is no way to fix that, I was facing the same problem after I updated my phone to Nougat, after trying every possible solution i.e. Odin flash, factory reset, contacting T-Mobile, I couldn't find a solution, and I had to get it fixed by a Z3X box, so find a good repair shop with Z3X box, and they will repair it for you, also, changing the IMEI is illegal in some countries, so you may have difficulties finding someone to repair your phone. After the repair, I couldn't upgrade to Nougat and I am stuck with Marshmallow because the Z3X fix didn't support Nougat at that time (a month ago).
My friend asked me to fix her phone and I am seeing the same thing, however when I boot to download mode and use the "show barcode" option (push home button instead of vol+) it shows me the proper IMEI, and the IMEI is also printed on the back of the phone. I thought that maybe because I can still see the IMEI in the "show barcode" that the EFS partition is not corrupt, but I'm starting to think it definitely is...
If I remember correctly you can change your IMEI with an Xposed module.
This had happened to me before theres 2 ways to solve this
Either replace the motherboard with another one
or take it into your carrier and say the sim card doesnt work(make sure its on stock firmware
Hey, everyone, I need some help:
On my SM-920G, I re-installed stock 6.0.1 (last official update before 7.0) and, now, I don't have access to the network (says emergency calls only). IMEI and serial number are both intact. What can I do to regain access to my network? I know it's not a motherboard problem because it happened after flashing stock software. I WOULD REALLY APPRECIATE YOUR HELP.
Thank you,
VinceLupe
vince.lupe said:
Hey, everyone, I need some help:
Thank you,
VinceLupe
Click to expand...
Click to collapse
I would remove and reinstall your SIM card and check your APN settings.
vince.lupe said:
Hey, everyone, I need some help:
On my SM-920G, I re-installed stock 6.0.1 (last official update before 7.0) and, now, I don't have access to the network (says emergency calls only). IMEI and serial number are both intact. What can I do to regain access to my network? I know it's not a motherboard problem because it happened after flashing stock software. I WOULD REALLY APPRECIATE YOUR HELP.
Thank you,
VinceLupe
Click to expand...
Click to collapse
Did you install the right firmware for your region? You should check that or flash right modem file. If all else fails use kies to restore phone to factory or flash a custom rom and check if everything works.
Mufrad said:
Did you install the right firmware for your region? You should check that or flash right modem file. If all else fails use kies to restore phone to factory or flash a custom rom and check if everything works.
Click to expand...
Click to collapse
So, I actually had to have an IMEI change... Long story - but, my question now is: is it possible to return to stock (completely stock) and NOT lose my IMEI number? I've heard some people say, "yes," and O be heard some people say, "no." Is it possible?
vince.lupe said:
So, I actually had to have an IMEI change... Long story - but, my question now is: is it possible to return to stock (completely stock) and NOT lose my IMEI number? I've heard some people say, "yes," and O be heard some people say, "no." Is it possible?
Click to expand...
Click to collapse
I don't think there is any risk of losing IMEI if you flash stock with odin, but if you have root then firstly take an efs backup, just in case, efs is where your IMEI is stored.
Mufrad said:
I don't think there is any risk of losing IMEI if you flash stock with odin, but if you have root then firstly take an efs backup, just in case, efs is where your IMEI is stored.
Click to expand...
Click to collapse
What is the safest way and most effective way to take an EFS backup?
vince.lupe said:
What is the safest way and most effective way to take an EFS backup?
Click to expand...
Click to collapse
If you have root then in the root folder you will find a folder called efs. Just copy it and save it to your SD card or your computer. If you have custom recovery then you can save it from the backup option but I guess that won't help much if you flash stock with odin then it will remove your custom recovery. There are also some apps on the play store but I never used them, I use the first method.
Mufrad said:
If you have root then in the root folder you will find a folder called efs. Just copy it and save it to your SD card or your computer. If you have custom recovery then you can save it from the backup option but I guess that won't help much if you flash stock with odin then it will remove your custom recovery. There are also some apps on the play store but I never used them, I use the first method.
Click to expand...
Click to collapse
Yeah, I'm just on stock, so that won't work - but, now I have another issue:
So, here's what happened... I got my IMEI changed, and all was good. But, then I realized that my phone was rooted. I tried to flash magisk to have magisk installed, and then my phone wouldn't boot up. Afterwards, I flashed stock to restore official device status, but when I did so, I realized that my network wasn't working. My IMEI (clean IMEI) is still showing, but I DO NOT have any access to my network and can't search the web or anything. What could be the issue, and what is the easiest way to fix it?
vince.lupe said:
Yeah, I'm just on stock, so that won't work - but, now I have another issue:
So, here's what happened... I got my IMEI changed, and all was good. But, then I realized that my phone was rooted. I tried to flash magisk to have magisk installed, and then my phone wouldn't boot up. Afterwards, I flashed stock to restore official device status, but when I did so, I realized that my network wasn't working. My IMEI (clean IMEI) is still showing, but I DO NOT have any access to my network and can't search the web or anything. What could be the issue, and what is the easiest way to fix it?
Click to expand...
Click to collapse
Did you flash the correct firmware? The same region as it was when it was working? Flashing a stock rom from a different region sometimes causes this and you need to flash the right one or at least the 'modem' file of the right one to get it working. Or you could use Samsung Kies software to completely recover your phone to its original state when it was bought. Also, What do you mean by saying changed IMEI? Did it not show it correctly or got corrupted and you fixed it? or you changed it completely to a different one from the original?
If you have a good IMEI just call your provider and give them your IMEI and your sim card numbers.
CodeNameRedNeck said:
If you have a good IMEI just call your provider and give them your IMEI and your sim card numbers.
Click to expand...
Click to collapse
CodeNameRedNeck,
So, I have a good IMEI number, but I cannot register the network service. It tells me "Emergency Calls Only" even though it shows a signal in the top right hand corner. Are you saying that I just need to call TIGO (I am in Bolivia) and register my IMEI number as well the SIM card numbers - or, could it be that there is an even deeper issue? Also, which SIM card numbers are you talking about? Thank you, my friend.
Mufrad said:
Did you flash the correct firmware? The same region as it was when it was working? Flashing a stock rom from a different region sometimes causes this and you need to flash the right one or at least the 'modem' file of the right one to get it working. Or you could use Samsung Kies software to completely recover your phone to its original state when it was bought. Also, What do you mean by saying changed IMEI? Did it not show it correctly or got corrupted and you fixed it? or you changed it completely to a different one from the original?
Click to expand...
Click to collapse
Mufrad,
I completely changed the IMEI to a clean one because, apparently, when I traded for the Note 5 (I am in Bolivia, and that's what people do here), the original IMEI was put on the blacklist. So, now I have a completely different IMEI that is clean (unreported), but I do not have any network access at all - furthermore, when I access the menu using *#0011#, it says "IMEI Status: NG" under IMEI Status. I'm not sure if it's a software problem? I have a friend looking at the phone, but I do not have any idea how it's going because he still hasn't been able to fix it.
vince.lupe said:
CodeNameRedNeck,
Thank you, my friend.
Click to expand...
Click to collapse
When my son switched from an iphone to Android we had to call AT&T and give them those numbers before it worked. I had an Xperia phone that I had to do the same with. There are apps that can read your sim card number. It should also be printed on your sim card.
i ha
vince.lupe said:
Mufrad,
I completely changed the IMEI to a clean one because, apparently, when I traded for the Note 5 (I am in Bolivia, and that's what people do here), the original IMEI was put on the blacklist. So, now I have a completely different IMEI that is clean (unreported), but I do not have any network access at all - furthermore, when I access the menu using *#0011#, it says "IMEI Status: NG" under IMEI Status. I'm not sure if it's a software problem? I have a friend looking at the phone, but I do not have any idea how it's going because he still hasn't been able to fix it.
Click to expand...
Click to collapse
plz tell did you fix it and how to fix it???plz help
I have a Note 8 N950U that was originally on ATT. It was bootlooping and I got it to work somewhat by flashing the ATT_N950USQS4CRE1_ODIN firmware using the moded odin file. The phone will boot and all seems to work but it will not work on a cellular network. It shows the "no network connection" error and the airplane mode switch is highlighted as if its on but it is not on. I've tried resetting the network settings, reboot with airplane mode on, etc. I also have tried several different working sim cards and all do the same. The phone does recognize the sim because it sees my phone number in the settings.
I recently reflashed the device using the N950USQS5CRG9 firmware, and still have the same issue. the device boots and all seems to work except the cellular network. I also tried different APN settings as well.
I seem to be having trouble with other firmwares because odin will just error out on me. These are the only 2 firmwares that I was able to get to flash. So is this a firmware issue or a hardware issue? I would really like to get this device to work if at all possible. So, any and all help is greatly appreciated.
TIA to all!!!
[email protected] said:
I have a Note 8 N950U that was originally on ATT. It was bootlooping and I got it to work somewhat by flashing the ATT_N950USQS4CRE1_ODIN firmware using the moded odin file. The phone will boot and all seems to work but it will not work on a cellular network. It shows the "no network connection" error and the airplane mode switch is highlighted as if its on but it is not on. I've tried resetting the network settings, reboot with airplane mode on, etc. I also have tried several different working sim cards and all do the same. The phone does recognize the sim because it sees my phone number in the settings.
I recently reflashed the device using the N950USQS5CRG9 firmware, and still have the same issue. the device boots and all seems to work except the cellular network. I also tried different APN settings as well.
I seem to be having trouble with other firmwares because odin will just error out on me. These are the only 2 firmwares that I was able to get to flash. So is this a firmware issue or a hardware issue? I would really like to get this device to work if at all possible. So, any and all help is greatly appreciated.
TIA to all!!!
Click to expand...
Click to collapse
What version of the bootloader are you currently on now? And did you flash a CSC file from AT&T and then do a factory reset in recovery mode?
MrMike2182 said:
What version of the bootloader are you currently on now? And did you flash a CSC file from AT&T and then do a factory reset in recovery mode?
Click to expand...
Click to collapse
I am currently on N950USQS5CRG9 bootloader. And yes, i flashed this CSC file, CSC_OYN_N950UOYN5CRG9_CL13949550_QB19107689_REV00_user_low_ship_MULTI_CERT, which I believe is an ATT file. I did not do a factory reset in recovery mode after the firmware flashing. The device was factory restored prior to flashing though. THanks for the help, I've been messing with this for a week now...Thanks again.
[email protected] said:
I am currently on N950USQS5CRG9 bootloader. And yes, i flashed this CSC file, CSC_OYN_N950UOYN4CRE1_CL13303302_QB17993108_REV00_user_low_ship_MULTI_CERT, which I believe is an ATT file. I did not do a factory reset in recovery mode after the firmware flashing. The device was factory restored prior to flashing though. THanks for the help, I've been messing with this for a week now...Thanks again.
Click to expand...
Click to collapse
Try going from CRG9 to N950USQU5CRIA because that could fix the problems.. Download the update.zip from the website put it on your SD card and then boot into recovery mode and select flash update from SD card and let it do its thing after you select the update file.. You have CRG9 still and you'll be able to flash back to it too if you have to for some reason.. The website is here put your model of phone in from the dropdown menu(Note 8) and then the next dropdown menu select your CRG9 firmware and it will give you some updates but take the latest version that's N950USQU5CRIA not the old ones after it flashes try a factory reset again!! Link https://samsung.firmware.science
MrMike2182 said:
Try going from CRG9 to N950USQU5CRIA because that could fix the problems.. Download the update.zip from the website put it on your SD card and then boot into recovery mode and select flash update from SD card and let it do its thing after you select the update file.. You have CRG9 still and you'll be able to flash back to it too if you have to for some reason.. The website is here put your model of phone in from the dropdown menu(Note 8) and then the next dropdown menu select your CRG9 firmware and it will give you some updates but take the latest version that's N950USQU5CRIA not the old ones after it flashes try a factory reset again!! Link https://samsung.firmware.science
Click to expand...
Click to collapse
OK, went through and did exactly what you said do...the update went through and finished, the phone rebooted, and then I restarted phone and did factory reset, and I went thru the setup and the update did take, but still same issue. Tried 2 different sim cards that work in other devices and still no network connection and airplane mode is still highlighted as if its on. No signal bars just a 0 with a / slash through it.
Any other ideas? Really do appreciate the help. TIA!!
[email protected] said:
OK, went through and did exactly what you said do...the update went through and finished, the phone rebooted, and then I restarted phone and did factory reset, and I went thru the setup and the update did take, but still same issue. Tried 2 different sim cards that work in other devices and still no network connection and airplane mode is still highlighted as if its on. No signal bars just a 0 with a / slash through it.
Any other ideas? Really do appreciate the help. TIA!!
Click to expand...
Click to collapse
Try this.. From the home screen, tap the settings icon, scroll down until you see General and select it, scroll down until you see the reset option. Select reset. You will be taken to the reset screen. Select Reset Network Settings, if your phone is password protected, enter your code. You will be taken to a new screen confirming your selection.
And the last idea I have is that you have a hardware issue if the above didn't work and there's something broken internally and you need to go to AT&T immediately and have them either replace that phone or call Samsung because there is a 1 year warranty on the phone for free from Samsung and they'll fix it and return it so long as it's not from something you caused, like water or dropping it and breaking it.. Also, where did you get that phone from? Is the IMEI clear?
MrMike2182 said:
Try this.. From the home screen, tap the settings icon, scroll down until you see General and select it, scroll down until you see the reset option. Select reset. You will be taken to the reset screen. Select Reset Network Settings, if your phone is password protected, enter your code. You will be taken to a new screen confirming your selection.
And the last idea I have is that you have a hardware issue if the above didn't work and there's something broken internally and you need to go to AT&T immediately and have them either replace that phone or call Samsung because there is a 1 year warranty on the phone for free from Samsung and they'll fix it and return it so long as it's not from something you caused, like water or dropping it and breaking it.. Also, where did you get that phone from? Is the IMEI clear?
Click to expand...
Click to collapse
That's one of the 1st thing i've tried before anything else. It says it resets successfully, but does not fix issue.
Unfortunately, I got this second hand...It worked great until it started boot looping, so returning it, isn't an option. I guess the baseband chip
got messed up some how. Anyways, thanks a million for the help...it was much appreciated.