Database Develop

[Q] Lost IMEI/Invalid SIM Card Error when running CyanogenMod

Hi guys,
I was adamant I could fix this on my own, but I've been chasing my tail for two days now and still no luck.
I'm trying to get CyanogenMod 12 running on my C6903 Xperia Z1. As far as I can tell, I did everything right:
- Rolled back to 14.1
- Rooted with vROOT
- Backed up TA partition
- Unlocked bootloader using official Sony method
- Installed PhilZ Dual Recovery
- Installed CM12 and GAPPS
Everything SEEMS to be working fine, except I get no mobile signal, the phone reports "Invalid Card - Emergency Calls Only", and my IMEI appears to be 0.
Note that this is NOT the issue I've seen a lot of other users having, where both the IMEI and Baseband version are unknown. My baseband is fine; it is just the IMEI that seems to be the problem.
I've tried a lot of fixes that seem to have worked for people with the baseband issue, but none have helped.
At first I assumed it must just be an unresolved issue since I was using a daily build of CM (23/01/15). But I've tried the most recent CM11 Snapshot (2014-11-12) and it has the exact same issue.
When I go back to using stock ROMs, the IMEI number returns and the mobile network works fine, so I can safely assume I haven't corrupted the partition.
I read somewhere that, on Samsung phones, the IMEI data is stored on the /efs partition, and that some baseband versions are incompatible with with the format of newer /efs partitions. Is the same possibly true of the TA partition, where the Z1 stores its IMEI info?
Along that line of thought, I tried flashing the baseband only from a 14.1 FTF that had been confirmed working, but to no avail.
I have a backup of the TA partition, but since restoring that means locking the bootloader and thus preventing me from running any custom ROMs, that's obviously not going to help. Is there any way to restore only the IMEI info from a TA backup? Alternatively, am I going down completely the wrong path in trying to fix this? Any help would be appreciated.

HELP: Upgraded from stock 4.2.2 to 4.4 and lost network connectivity

Hello All,
Tried searching for a case peculiar as mine, wasnt able to find one so here is the lowdown.
1. Xperia C6603 , originally had 4.2.2 stock ROM which was working fine with my local network. Dont remember the baseband version.
2. Used XperiFirm to download the latest firmware as reported in the list. Dont know what does the suffix RxD (R1D--R8D) means. Anyone please explain. As per the below screenshot downloaded version "C6603_Customized HK_1270-5695_10.5.1.A.0.292_R1D" .
3. Before flashing the downloaded firmware I flashed the dualrecovery from XZDualRecovery. I made a TWRP backup of the 4.2.2 stock ROM on an external SD card, for all partitions including TA,system,boot etc.
4. Used Flashtool to convert the downloaded (step 2) firmware "FILES" format to a flashable FTF file. Flashed the firmware , which went on smoothly.
5. At the first startup I got the following screen , telling me that it is a prototype device/firmware . I went on to see that the network which was working fine with stock ROM 4.2.2 was no longer available.
I tried to go to settings to check and search for networks, which shows available networks, but unable to get itself registered to the SIM providers network. Tried all the settings combinations in menu "*#*#4636*#*#" , nothing makes it work to get the GSM network connectivity back. It is supposedly on the correct setting of LTE/WCDMA/GSM which my current operator supports. Following is the "About" screen for current baseband version.
Tried going in the "Service" menu via "*#*#7378423#*#*" , with the following info, having an unknown modem configuration.
6. Tried reverting back to the old TWRP backup, for which I needed the TWRP recovery loaded on the phone. So ran the XZDualRecovery script again (with the new 4.4 ROM on the phone), however the script hangs around in the end and never reboots the phone with the TWRP recovery. So i am unable to revert and use the stock ROM backups .
7. I dont want to root/unlock the bootloader, however I tried installing TWRP via its "XZrecovery.apk", but it requires busybox (which requires a rooted phone). So i tried the rooting script from [GUIDE] How to root 10.5.1.A.0.283 / 10.5.1.A.0.292 [Locked Bootloader], but it also hangs around in the end and never delivers a rooted phone.
8. Tried looking around for assortment of xperia Z baseband files to check and see if flashing it separately can make it work, however to no avail the the condition persists.
Either ways having a prototype version on the phone which transmits all data back to sony is not desirable at all. So need to replace it for sure. Currently I am stuck in the middle without a clue of how to go back and restore the 4.2.2 TWRP backup, or to actually flash a "non-prototype" or retail version of 4.4.x .
Any help/guidance/suggestions to remedy would be appreciated.
Thanks.
=====================UPDATE
Ok followed the instructions at [GUIDE] How to root 10.5.1.A.0.283 / 10.5.1.A.0.292 [Locked Bootloader] , read carefully again to flash the .230 kernel. Flashed the XZDualRecovery and got the TWRP recovery back.
Restored the old 4.2.2 TWRP backup , hoping that everything would go back to normal. However with a successul restore and a reboot, I was amazed to see I still have no network connectivity. The baseband version is "9x15A-ACEFWMAZQ-30110068-44" . Another noticeable thing was that after the restore and first boot, I still got the "prototype device" message again, which was not there when I first booted the device with original stock 4.2.2 ROM before this flashing adventure began.
Any ideas what may have gone bad.
Thanks.
=======================================
Just got to know that my device is a BROWN device, its IMEI number starts from 0044 so it is a prototype. Any ideas is it really good or bad to have one. Also I see that after another restore of the original stock 4.2.2 ROM it is barely getting the signals indoor (1 bar only). The signal reception is very weak and sporadic . Should i keep the device or not and is there any remedy or network signal strength.
Thanks.

HyperEscape said:
Hello All,
Tried searching for a case peculiar as mine, wasnt able to find one so here is the lowdown.
1. Xperia C6603 , originally had 4.2.2 stock ROM which was working fine with my local network. Dont remember the baseband version.
2. Used XperiFirm to download the latest firmware as reported in the list. Dont know what does the suffix RxD (R1D--R8D) means. Anyone please explain. As per the below screenshot downloaded version "C6603_Customized HK_1270-5695_10.5.1.A.0.292_R1D" .
3. Before flashing the downloaded firmware I flashed the dualrecovery from XZDualRecovery. I made a TWRP backup of the 4.2.2 stock ROM on an external SD card, for all partitions including TA,system,boot etc.
4. Used Flashtool to convert the downloaded (step 2) firmware "FILES" format to a flashable FTF file. Flashed the firmware , which went on smoothly.
5. At the first startup I got the following screen , telling me that it is a prototype device/firmware . I went on to see that the network which was working fine with stock ROM 4.2.2 was no longer available.
I tried to go to settings to check and search for networks, which shows available networks, but unable to get itself registered to the SIM providers network. Tried all the settings combinations in menu "*#*#4636*#*#" , nothing makes it work to get the GSM network connectivity back. It is supposedly on the correct setting of LTE/WCDMA/GSM which my current operator supports. Following is the "About" screen for current baseband version.
Tried going in the "Service" menu via "*#*#7378423#*#*" , with the following info, having an unknown modem configuration.
6. Tried reverting back to the old TWRP backup, for which I needed the TWRP recovery loaded on the phone. So ran the XZDualRecovery script again (with the new 4.4 ROM on the phone), however the script hangs around in the end and never reboots the phone with the TWRP recovery. So i am unable to revert and use the stock ROM backups .
7. I dont want to root/unlock the bootloader, however I tried installing TWRP via its "XZrecovery.apk", but it requires busybox (which requires a rooted phone). So i tried the rooting script from [GUIDE] How to root 10.5.1.A.0.283 / 10.5.1.A.0.292 [Locked Bootloader], but it also hangs around in the end and never delivers a rooted phone.
8. Tried looking around for assortment of xperia Z baseband files to check and see if flashing it separately can make it work, however to no avail the the condition persists.
Either ways having a prototype version on the phone which transmits all data back to sony is not desirable at all. So need to replace it for sure. Currently I am stuck in the middle without a clue of how to go back and restore the 4.2.2 TWRP backup, or to actually flash a "non-prototype" or retail version of 4.4.x .
Any help/guidance/suggestions to remedy would be appreciated.
Thanks.
=====================UPDATE
Ok followed the instructions at [GUIDE] How to root 10.5.1.A.0.283 / 10.5.1.A.0.292 [Locked Bootloader] , read carefully again to flash the .230 kernel. Flashed the XZDualRecovery and got the TWRP recovery back.
Restored the old 4.2.2 TWRP backup , hoping that everything would go back to normal. However with a successul restore and a reboot, I was amazed to see I still have no network connectivity. The baseband version is "9x15A-ACEFWMAZQ-30110068-44" . Another noticeable thing was that after the restore and first boot, I still got the "prototype device" message again, which was not there when I first booted the device with original stock 4.2.2 ROM before this flashing adventure began.
Any ideas what may have gone bad.
Thanks.
=======================================
Just got to know that my device is a BROWN device, its IMEI number starts from 0044 so it is a prototype. Any ideas is it really good or bad to have one. Also I see that after another restore of the original stock 4.2.2 ROM it is barely getting the signals indoor (1 bar only). The signal reception is very weak and sporadic . Should i keep the device or not and is there any remedy or network signal strength.
Thanks.
Click to expand...
Click to collapse
Firstly I love the detail you have provided which would save you and me a lot of time to pinpoint the exact problem and work it accordingly.
Firstly, I would suggest that if you have a box or any other receipt that shows your exact device name with its basebands. Where did you buy it from and what is your exact location so we can guess your region. This is the time to show it now. Also which basebands work in your location can also help us out.
The problem you have made it flashed basebands of a different variant which has resulted in loss of network. So to fix it we need, and there are three ways about it.
First, download Sony PC companion and try to repair your phone and see if that helps.
Secondly, download flashtool and ftf for your device (make sure you select the right variant this time. Choosing for wrong device can hard brick your phone. so beware) and flash your phone with it.
If all this fails, you go to Sony flashtool called Emma. Download it and try to flash it with that.
You can google how to use every tool on xda and I am sure you would find a lot of guides for that.
Quote me back in case you expect an answer

imei=0 problem with my moto g 2014 xt1068 (dual sim)

hi friends, :crying:
my phone is moto g 2014 xt1068 , the problem is my phone does not detecting both the sim cards
what happend really is i unfortunately used adb command ' fastboot erase all ' while flashing different roms
now when i dial *#06# it shows imei=0
i returned to stock rom, but still it shows imei=0 and not detecting sim cards
please help me. . . . .

xt1068 lost IMEI number,Base Band Number, network after Marshmallow update recentely
I recently updated the Marshmallow 6.0 update and after that everything one xt1068 stopped working except Bluetooth. After that I tried lot of things like factory reset, cache format but nothing changed. Then I searched the forum and unlocked the boot loader and tried flashing kitkat to marshmallow again but with no output. My base band version is unknown my Imei number is null and my wifi is also not working. Please advise me if this is a hardware problem or is there any solution to this. I shall be obliged if somebody gives me step by step genuine solution.
PS. I sent it for moto g service dealer and after hearing the problem and handling my phone he said its a motherboard problem. Same problem happened to my friends Nokia windows phone last month and his problem was solved flashing the software..

[XT1063] SIM No Service

Flashed the last version of CM 13 NIGHTLY into my Moto G and the SIM isn't working properly, it asks me for the code to unlock the SIM Card but I get "No Service", everything else works as expected.
The IMEI seems to be fine.
When I "jump" into the "*#*#4636#*#*" I can't turn on the Radio, neither change to GSM or anyting else since it goes back after reopening.
Tried:
- Flashing with different versions of TWRP.
- Flashed stock ROM and the 6.0.
From the research I did I think I need to flash a modem firmware with the Radio(which I can't find) or a new Kernel - need advise on this one.
Thanks.

Closed per OP request.

Nexus 6 + LineageOS 16 = No SIM detected

SOLVED - see 2nd post
I upgraded two (2) Nexus 6 phones to LineageOS 16. One was running LineageOS 14, the other was running stock. I installed the corresponding bootloader and radio images via fastboot.
On both phones, the SIM card is not detected. They both had functioning cellular before the update. One has an AT&T GSM SIM, the other has a Sprint ICCID card.
The SIM status menu reports "Not available" for all fields. Also noteworthy is that the IMEI is "Unknown".
I've checked the SIM cards and they're good. Airplane mode is off. Security is off (screen unlock is disabled, and no filesystem encryption).
Searched through the forums and haven't found anything that helps. Hoping someone may have run into this before with Lineage 16. TIA

Reverting to stock 7.1.1 (N6F27M, Oct 2017) restores IMEI and SIM card detection. This confirms that it's a firmware issue, not hardware.
From there I ran fastboot -w, re-installed bootloader, radio and LineageOS 16. The SIM card was still not detected, and no IMEI was shown.
Reverted to factory image again and IMEI was recognized. This time I installed LineageOS 16 only (wiped system, data, dalvik, cache of course). I did not update the bootloader or radio. Finally success! IMEI and SIM are recognized.
This happened on 2 Nexus 6 devices. Other people have also reported this, so it can't be a device-specific issue. I recommend mentioning this in the OP to help save a lot of headache for others.

chefp said:
Reverting to stock 7.1.1 (N6F27M, Oct 2017) restores IMEI and SIM card detection. This confirms that it's a firmware issue, not hardware.
From there I ran fastboot -w, re-installed bootloader, radio and LineageOS 16. The SIM card was still not detected, and no IMEI was shown.
Reverted to factory image again and IMEI was recognized. This time I installed LineageOS 16 only (wiped system, data, dalvik, cache of course). I did not update the bootloader or radio. Finally success! IMEI and SIM are recognized.
This happened on 2 Nexus 6 devices. Other people have also reported this, so it can't be a device-specific issue. I recommend mentioning this in the OP to help save a lot of headache for others.
Click to expand...
Click to collapse
if you have the latest firmware you dont need to flash bootloader and radio again just clean flach lineage os 16 ( clean flash )

AmirHRC said:
if you have the latest firmware you dont need to flash bootloader and radio again just clean flach lineage os 16 ( clean flash )
Click to expand...
Click to collapse
Understood, and I was able to confirm that's the only way to upgrade to LineageOS 16 and have the SIM card operational.
The issue stems from upgrading older firmwares to Lineage 16. My 2 phones had stock 6.0 and Lineage 14. I did not upgrade them to stock 7.1.1 because the instructions implied that I could flash the bootloader and radio separately, and go straight to Lineage 16.