Best fix for IMEI unknown. - Nokia 7 Plus Questions & Answers

Hi,
I have a TA-1062 TW variant, unlocked bootloader. A few months ago I flashed the phh-treble rom onto it and lost baseband and imei slot one. Had to get a different phone and set it aside for a bit. I would really like to get this phone back to full functionality. Sometimes the baseband shows a radio version, sometimes unknown. IMEI slot 1 is always unknown. Familiar with using adb and fastboot(linux), and know a little about QPST and OST. Any help figuring out a procedure to move forward on this is greatly appreciated. Thank you

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No sim card error without sim card, no IMEI

I just got a used AT&T Vivid with what turns out are 2 anomalies that I failed to observe initially.
First I tried to put my ST sim card out my AT&T SGS, and get no service. No big shock initially since I have to change the APN info. Couldn't do that cause option is dimmed.Checked further, No IMEI, IMEI SV, or baseband. Took sim out and observed that I get NO sim error at startup, just "no service". Tried an AT&T sim from a friends Vivid, same result.
I was hoping that the sim card reader just might be bad, a cheap easy fix and apparently some what of a common issue. Haven't ordered one yet until I get more info on whether the no sim error and no IMEI etc are related and it's not a more serious hardware issue. I don't have a problem with repairing hardware if needed.I'm a noob here, but have a brain like a sponge, so any thoughts on how to proceed with diagnostics would be appreciated. Thanks in advance
No imei is really bad...
No one here can help you recover it without a proper backup... I have no idea how to back it up nor restore...
If you don't figure it out I'd have to suggest flashing to stock... prolly via ruu and go to an at&t store...
Sent from my Vivid 4G using Tapatalk 2
I don't think (but don't know 4 sure) that this phone is anything other than an out of the box stock configuration. I don't have service with AT&T so I don't know how much help they would be. I did check with them to make sure IMEI printed on the phone wasn't blacklisted and it's OK. All I have done was to do a factory reset to clear all the PO's stuff.
Does anybody have any more ideas? I am wondering if I don't need to replace the motherboard and or just the simcard/sd part. Changing the motherboard would mean a different IMEI right?
No imei means something went wrong with the bootloader. It's unlocked? Did you try to S-OFF?
I believe flashing a rom stock via RUU (that's it, flashing the PD.zip file) maybe can fix the problem.
At worst you must change the motherboard and yes, you will have a diferent imei.
I may be wrong, but I see no sign that anybody has done anything to change ROM or anything else on this phone. I'll try to do a S-off, and unlock it since I want to use it on ST anyway.
hello,
i've also same problem here
flashed with stock rom but no luck ,
bootloader locked and s-off
searched forum but no success story
i think i'll return it
Well I finally got a new SIM/SD card reader and installed it. No change.Tried ST, AT&T, and T-mobile sims
Still get no SIM error when booting with or without a SIM card, has an X on signal strength, and it doesn't even say "no service".
Same as to IMEI etc. info, nothing shows up.
Am I going to have to change mainboard? Or is it possible firmware/ROM changes could fix it?
javierarenas said:
No imei means something went wrong with the bootloader. It's unlocked? Did you try to S-OFF?
I believe flashing a rom stock via RUU (that's it, flashing the PD.zip file) maybe can fix the problem.
At worst you must change the motherboard and yes, you will have a diferent imei.
Click to expand...
Click to collapse
Unlocked the bootloader tonight, no problem. Will try s-off tomorrow.
Where can I get a stock rom file?
I'll only ask this dumb ? once: Is the OS (JB,GB,ICS) different than the rom? I'm still running gingerbread 2.3.4, should I got to ICS or? Will that have any affect on the imei issue?
I might just be getting some experience with this phone if I have to do it all over with another mainboard.
OK, so I decided to play with this phone again after my SGS1 was freaking out yesterday. I finally found and used a phone dialer code do download the ICS update, and it downloaded (via wi-fi), installed and rebooted fine. In fact It apparently fixed my IMEI and SIM card problems because when it booted the first time with ICS it showed a big icon "no SIM installed" ya hoo!! checked IMEI in settings, all was good. Played around with settings/menus a bit to familiarize myself with the differences, then restarted...NO IMEI again, and no sim error without any SIM installed On the next 5-6 restarts it worked fine all but once, (total on time of around an hour) but now every restart (10+) it's back to same original issue: no IMEI shown and no SIM error. I still have no AT&T compatible SIM card to really test it but if it doesn't give me a SIM card error (no SIM card installed) it's a moot point.
It really puzzles me that it appeared to work at all if I have a bad mainboard. My daughter in-law has a Vivid with a bad screen she's going to give me to use for parts (mainboard) but I'm not sure if there's not still some hope of salvaging the current one.
Comment, thoughts etc... Please

p1000 baseband unknown - nothing seems to be working

I have a factory unlocked P1000 that recently started having some issues. When I first got it two years ago, I had flashed it with the following:
PDA1000DXJK2
PHONE1000DXJJ2
CSC1000OLBJJ2
During all that time, everything was working fine everywhere I had been (Asia and North America), with at least three different SIM cards and carriers.
About three weeks back, I suddenly lost voice/data. At first, I thought it was a SIM/carrier issue, but some swapping with a friend revealed that it was my tab that was the problem. Searching here and elsewhere, all I could come up with was that my IMEI was showing as the generic 0049990106400 and not the one listed on the back of my tab. I had been aware of them not matching, but it had never caused problems in the past. I was able to confirm, however, that the radio/modem was still working. I could place emergency calls, I could see that the networks were there, I just could not connect to any of them.
In my attempts to restore the original IMEI, following a guide here, I managed to lose my broadband entirely. I have been researching and trying to get it back ever since, so far to no avail. Unfortunately, I haven't been able to find a copy of the P1000DXJK2/DXJJ2 firmware I used the first time. However, I have tried multiple stock ROMS, different tutorials, and most recently, flashing with Overcome 4.1. The result is always the same: everything works except for the phone. Phone, broadband, and IMEI list as unknown.
Currently:
PDA: P1000XXJQ1
PHONE: Unknown
CSC: P1000OXAJQ1
Model number: GT-P1000
Firmware version: 2.3.3
Baseband version: Unknown
Kernal version: 2.6.35.7 [email protected] #2
So, here I am desperately appealing for any help anyone might be able to provide. My tab has been my only phone for years and often my only internet access, so I am feeling pretty lost without it. I am fairly tech savvy and I follow instructions very well, but I have never really messed around much with Android, so I am hoping the experts here are going to be able to come up with something.
So, you said you most recently use overcome 4.1.
When you first use Odin to flash GB-stock-safe-v5, before you put overcome kernel, what is the IMEI?
No point to proceed to Overcome ROM if GB-stock-safe-v5 didn't bring back the IMEI.
Yes, that is what I assumed, but I gave it a try anyway. If nothing else, it gave me better recovery mode tools.
As I said above, nothing has worked so far. My IMEI was unknown before flashing with GB Stock, as it is now. However, at this point, I would be happy just to get a working modem again, even if the IMEI remains messed up... One thing at a time.
the fact that the IMEI suddenly is gone, and on further tweaking the radio/baseband is gone, I think your internal storage is failing.
first it hits the EFS area, then the baseband area.
That is my suspicion.
You could probably proceed to flash latest CM/AOKP or whatever, which repartition your internal storage.
You should get your baseband, because the /radio/modem.bin in those MTD partitioned ROM sits on a different part of the storage.
But since you never have a backup of your EFS, those ROM will not give you your IMEI either.
Only flashing a stock ROM will give you the right EFS (assuming the area it writes into is writable)
I also wonder if there a person expert enough to rewrite the pit file, so that your EFS and baseband is shifted from its original position, and use that with the GB stock safe v5
This is an interesting idea. To clarify, though, my IMEI did not suddenly go, to my knowledge. For at least the last year and a half, the IMEI listed did not match the one printed on the back. Everything worked fine, so I never gave it much thought. What I do not know is if it changed again, or if it has been the generic one I listed above all along.
Could it be that something is simply wrong with the EFS, preventing the modem.bin from flashing correctly? One of the IMEI restoration tutorials I attempted early on involved messing with the EFS. I believe this was the same night the modem stopped working, though I did not notice a direct cause-effect relationship. There were other (failed) attempts between that and broadband coming up "unknown." I will admit I was a little hasty in those first few days. I was traveling, crunched for time, and panicked that I would have no phone.

Weird problem with modems: "Unknown" baseband, IMEI, etc.

Hi!
Resume:
My note has some weird problem with the modems. I'm getting "Unknown" baseband, modem verison, phone number, IMEI etc. with all the modems I tried except one, which shows the correct IMEI and modem version but still not working(I can even see the mobile networks with that one, but I it doesn't connect and gives me "Refresing SIM data" messages).
Click to expand...
Click to collapse
I always have been using custom roms(only TW) and updating my note to the latest version and I never had a problem.
One day, some months after the last rom update, started to lose the phone network conection and I was getting pop-ups with "Refreshing SIM data"(was very annoying because that was turning on the phone screen every few minutes). Sometimes I had phone network and sometimes I hadn't. The disconnections became more frequently. The phone also started to eat up the free space for apps, so I had to remove several apps to install or update even a small one.
So I decided to change to a different ROM to see if that fixes both problems, but I got the actual problem.
I was in AllianceRom v3 JB when that happened.
I flashed this AryaMod 5.5 JB following their instructions and I got this weird problem. In the "About phone" says that the Baseband version, IMEI, IMEI SV, Network and My phone number are "Unknown". I can't even search for mobile networks because it says "Insert SIM card" when I try to open the Mobile networks menu. Tehre are no signal bars, only a "denied" icon on the status bar.
I tested all JB modems and some from ICS from the "all modems" thread, but I was getting the same "Unknown" things in each one, except the XXLSO, where the Baseband version, IMEI and IMEI SV were okey. I could also find mobile networks with this modem, and the "Refreshing SIM data" thing returned, but it was not possible to connect to a network. With this one, there aresignal bars, but they are empty.
I flashed the AllianceRom and even the old ICS rom I had before, but the problem persisted, even with the modems they came with.
Now I'm on the latest Samsung rom(LT4), unmodified and flashed with odin and the problem persist.
I found this old thread. His initial problem is very similar to mine, but they don't know what caused it nor how to fix it.
I have also found something about corruped IMEIs that you can fix doing something with the ADB and restoring EFS folder, but I think that is not my case because I can see my original IMEI with the XXLSO modem (and I my EFS folder looks OK, anyway I have no backup of that).
I don't expect to get a step-by-step tutorial about how to fix this, but I hope somebody can put me in the right direction. I will post the solution if I find one!
What are the first 4 digits of your imei
Sent from my Nexus 5 using Tapatalk
Thanks for reading, the four first digits are 3595.
Maybe this is a stupid question, but have you tried re-seating your Sim card, or even a different Sim?
Sent from my Nexus 5 using Tapatalk
I tried both. Also I have been using the SIM with another phone for weeks and works fine. Tried to take out the battery and wait few minutes and other "stupid" things like re-flash a ROM, re-wipe all, etc..
Maybe it's the programed obsolescence, you can use the Note as PDA but if you want a phone, go and buy another...
@ThaiDai or @nokiamodeln91 I believe knows of a way to fix this if its an EFS issue...but you don't have a developer imei
Did you have an old efs backup from when u first rooted your phone?
Sent from my Nexus 5 using Tapatalk
AndroidSlave said:
@ThaiDai or @nokiamodeln91 I believe knows of a way to fix this if its an EFS issue...but you don't have a developer imei
Did you have an old efs backup from when u first rooted your phone?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
If it was a corrupted IMEI issue then it should not come back when the xxlso modem is flashed.. And also not sure why it goes to unknown when any other modem is used.. Could there be any physical damage to the sim tray? Dropped the phone?
I have no backup of efs... I had one "nandroid" but deleted it after everything was okey...
I could delete the efs folder, so this unknown problem will turn a known one :victory:
I dropped the phone a very few times, maybe in one of those something broke a little and has increased more with the usage? (the disconnections from the network became spontaneus and progressively).
I found this other thread, I could try the same but I can't find the original GB firmware, every link I find is in hotfile.
Check in Samsung-updates.com firmware section. There are 2 GB roms there..
I found a efs backup from may 2012, probably auto-created when first installed ICS.
I flashed the stock GB rom and restored it following this tutorial for my .tar.gz file, but didn't work, so the device may be lost. I only have 3 more backups: boot.img, data.ext4.tar and system.ext4.tar. I guess they are useless to fix this...
Thay you for you support!

Baseband Unknown

Hi. I got a serious trouble please some one help me. Strangely yesterday my xt 1254 ran out of service i checked but didn't find sim menu. And baseband unknown while imei was missing too. I rebooted device and all got ok sim worked badeband ok & imei shown. But the problem is after sometime( 1 or 2 hour later) my device again ran into same problm. And aftee that the problem continues for sometime baseband works after sometime it gets unknown no sim no imei please help me to get out of this. Thanks
Looks like no one helps noobs
Not that no one helps noobs, but not many people check here any more.
1) The real Droid Turbo forum is over at Moto Maxx, where all the updated Moto Quark custom ROMs are.
2) This phone is 4 years old. No one comes here anymore with a "new" problem. So, feel free to SEARCH for previous answers.
https://forum.xda-developers.com/search/forum/3715?query=baseband
3) Are you still running stock firmware? Is your bootloader unlocked and you're on a custom ROM? What version firmware are you running? You don't mention any of that, which may be relevant.
* If you're still on stock, the best thing to do is reflash same firmware or newer to reset the modem. Be very careful it's not older firmware, or you will brick the phone (if your bootloader is still locked).
* If you're running custom ROM, the best thing is to flash the BHB27 clear modem file in TWRP and then reflash your modem in TWRP. There's TWRP-FLASHABLE modem zip files available for all Moto QUARKS.
A single answer and i got all i want. Thank you chazzmatt. The problem was faulty baseband chip cz mistakenly my brother fell down the device. Repair guy said me he changed the chip and now all set. Thank you buddy and thanks xda

Baseband + IMEI Unknown

Hello
I recently lost my s10 and now got my hands on a new one (exact same model)
I thought i was smart and restored a TWRP backup from the lost phone on the new one
I guess the mistake was that there was also the efs partition included in the backup
The rom (newest beyond) works without problems but the sim card is not recognized and baseband and IMEI both show unknown
so i flashed the original samsung firmware with odin but even then i have baseband and IMEI unknown
Did i just screw my new s10 or does anyone have an idea?
any help much appreciated
Anyone has an idea what I could try?
Or did I really kill my phone for good
My guess is that you may have wiped out the new phone specifics, such as IMEI and other things. I'm not sure if you can recover that in some way, or if you need to just find a way to get your old IMEI back. I would probably try to restore my old IMEI if I can (see if you can identify the old one from your carrier's website or something, for example).
schwinn8 said:
My guess is that you may have wiped out the new phone specifics, such as IMEI and other things. I'm not sure if you can recover that in some way, or if you need to just find a way to get your old IMEI back. I would probably try to restore my old IMEI if I can (see if you can identify the old one from your carrier's website or something, for example).
Click to expand...
Click to collapse
I know the original imei, it's printed on the phone but how could i flash that to my phone? Seems to be impossible
There are ways, but they are not allowed to be discussed here on XDA. I've seen Youtube videos that cover it as well.

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