Baseband Unknown, no IMEI: Surnia XT1521 running custom LP ROM - E 2015 Q&A, Help & Troubleshooting

I have a Moto E 2015 XT1521 (4g/LTE India, Dual SIM). Yesterday My phone rebooted when I was trying to force data connectivity on 3G by switching to airplane mode and back, and the phone lost its baseband (No SIM cards detected, Baseband unknown displayed, no wifi either). Was running 5.1.1 LP Tesla OS. Reflashed with stock XT1521_SURNIA_RETASIA_DS_5.1.1_LPI23.72-65_cid7_subsidy-DEFAULT_CFC.xml (was on this ROM b4 changing to Tesla last year). Still baseband unknown, Flashed the two NON-HLOS.bin and fsg.mbn from the same 5.1.1 ROM. Still no baseband. Can I flash the two files from the 5.0 initial release / 6.0 MM final release Stock ROMs (RETASIA Indian ROMs)? How can I get my radio baseband back?
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Cookie Ninja said:
I have a Moto E 2015 XT1521 (4g/LTE India, Dual SIM). Yesterday My phone rebooted when I was trying to force data connectivity on 3G by switching to airplane mode and back, and the phone lost its baseband (No SIM cards detected, Baseband unknown displayed, no wifi either). Was running 5.1.1 LP Tesla OS. Reflashed with stock XT1521_SURNIA_RETASIA_DS_5.1.1_LPI23.72-65_cid7_subsidy-DEFAULT_CFC.xml (was on this ROM b4 changing to Tesla last year). Still baseband unknown, Flashed the two NON-HLOS.bin and fsg.mbn from the same 5.1.1 ROM. Still no baseband. Can I flash the two files from the 5.0 initial release / 6.0 MM final release Stock ROMs (RETASIA Indian ROMs)? How can I get my radio baseband back?
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Bump.....Anyone willing to help?
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Cookie Ninja said:
I have a Moto E 2015 XT1521 (4g/LTE India, Dual SIM). Yesterday My phone rebooted when I was trying to force data connectivity on 3G by switching to airplane mode and back, and the phone lost its baseband (No SIM cards detected, Baseband unknown displayed, no wifi either). Was running 5.1.1 LP Tesla OS. Reflashed with stock XT1521_SURNIA_RETASIA_DS_5.1.1_LPI23.72-65_cid7_subsidy-DEFAULT_CFC.xml (was on this ROM b4 changing to Tesla last year). Still baseband unknown, Flashed the two NON-HLOS.bin and fsg.mbn from the same 5.1.1 ROM. Still no baseband. Can I flash the two files from the 5.0 initial release / 6.0 MM final release Stock ROMs (RETASIA Indian ROMs)? How can I get my radio baseband back?
Dead Cookies leave no trails....
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Can't say what happened, but you can try flashing latest 6.0 MM but won't guarantee it will work or not,
Never heard of this problem before
Sent from my Motorola XT1521 using XDA Labs

Sher1234 said:
Can't say what happened, but you can try flashing latest 6.0 MM but won't guarantee it will work or not,
Never heard of this problem before
Sent from my Motorola XT1521 using XDA Labs
Click to expand...
Click to collapse
Just a bit wary / reluctant to upgrade. Bootloader version changes and cannot be downgraded, more chances of a brick if trying to downgrade.
Personally i have liked LP and user opinion says that MM upgrade makes the phone lag, stutter and possibly phone lacks appropriately boosted ROM/hardware. Should I take the plunge?

Cookie Ninja said:
Just a bit wary / reluctant to upgrade. Bootloader version changes and cannot be downgraded, more chances of a brick if trying to downgrade.
Click to expand...
Click to collapse
Yeah that might cause the problems
Cookie Ninja said:
Personally i have liked LP and user opinion says that MM upgrade makes the phone lag, stutter and possibly phone lacks appropriately boosted ROM/hardware.
Click to expand...
Click to collapse
No​ offence but I liked the Marshmallow Update
Cookie Ninja said:
Should I take the plunge?
Click to expand...
Click to collapse
& Its up to You if you want to give it a try or not
But not sure it will work or not
Sent from my Motorola XT1521 using XDA Labs

OK, so i took the plunge and flashed the MM stock ROM as advised by @Sher1234 in the fond hope that IMEI and Baseband will be restored, but at the end of it i have been awarded with a MotoE that works like a tablet sans WiFi and SIM cards (No radio baseband, NO IMEIs)!
Terminal commands for flashing were all OK, see attached txt file for ref (flashed from a Linux 32 bit machine)
Spoke to the repair guy, who advises a motherboard change (which will cost Rs 2500-3500). I am wondering if it's worth it or not.

I own and use XT-1521 here in the U.S. - are you using the latest squid TWRP specific to the Moto E ? Did you do a factory reset, wipe clean and then a fresh/new install, etc. Did you verify your micro-sim cards are valid & working on another smartphone. Checked your APN settings for the network being used ?
If they all checked out, try switching in/out of Airplane Mode - so everything works in WiFi mode, including WiFi (VoIP) calling mode ?
I have been running Remix rom for a while, using the latest - might want to give it a try. https://forum.xda-developers.com/moto-e-2015/orig-development/rom-resurrection-remix5-5-1-t3160059

@Letitride, the SIMs work on other phones. Yes, using Squid's TWRP recovery. System does not see any SIMs on the phone and WiFi fails to initialize, and the same happens with the FM radio too. Cannot disengage/engage airplane mode, as that tile is greyed out.
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Related

[Q] No mobile network or invalid SIM with with 7/8 ROMS. Why?

I've been using the pac-man ROM for over a year now, but it's a very old version, buggy and outdated. I wanted to try Kit Kat or basically just find a stable ROM, but pretty much ALL of the ROMS i've tried end up unable to find any mobile network or display the SIM card as invalid. Even when I search for networks or try to add a network manually, it still doesn't stick. Occassionally it'll even find the my local network when I go in settings and do a network search, my network being that of China Unicom, but it always results in failure to subscribe, please try again later. This has happened on a good 7 out of 8 ROMS i've flashed. The ONLY ROM i've ever been able to find a network on and thus make it usable has been the old 2013 pac-man 3.99 build. I've searched the forum and google for answers, such as flashing a particular modem or whatnot, but haven't found any solutions.
Does anyone have any ideas? It'd be greatly appreciated. I really need an updated ROM! :fingers-crossed:
If it matters:
Network: China Unicom
I've tried: 4.4.4 CM11, Stone UI hD3, Carbon KK Unofficial 2014-12, CM10.2 nightly, CM 11 M9, KitKat CarbonCN, PC Honami KK RC3, and Xperia Z Z1-1.4.
Only working ROM so far: pa_togari-3.99-RC2-20131104
To use the more modern ROMs you will have to be on a 4.4.4 FTF or you will get baseband issues ie SIM cant connect to network etc
blueether said:
To use the more modern ROMs you will have to be on a 4.4.4 FTF or you will get baseband issues ie SIM cant connect to network etc
Click to expand...
Click to collapse
It's been over a year since I unlocked and flashed my phone, and I haven't done any flashing since, so I kind of forget some of the procedures and technical aspects.
I'm going over the FAQ now, and one thing it says is "Never Flash a FTF to a ZU GPe." What is a GPe, and how can we make sure we are not using it?
It also mentioned I should use Sony PC Companion to update to the newest firmware. This means it will update to 4.4.4 FTF right, or do I need to find this and flash it manually? Likewise, after I'm on 4.4.4, I assume my phone will be reverted back to stock. Would I have to root it and unlock the bootloader again?
I remember when doing all this for my phone the first time, since my phone was a Chinese model, 6833 I believe, I went through hell and back for several weeks until it flashed and took the current ROM properly. Something about buggy firmware in that paritcular model, although it's been so long I forgot all the details. I'm worried that I'll run into a similar situation with 4.4.4... Thanks for any help, truly appreciated.
Spixe1 said:
It's been over a year since I unlocked and flashed my phone, and I haven't done any flashing since, so I kind of forget some of the procedures and technical aspects.
I'm going over the FAQ now, and one thing it says is "Never Flash a FTF to a ZU GPe." What is a GPe, and how can we make sure we are not using it?
It also mentioned I should use Sony PC Companion to update to the newest firmware. This means it will update to 4.4.4 FTF right, or do I need to find this and flash it manually? Likewise, after I'm on 4.4.4, I assume my phone will be reverted back to stock. Would I have to root it and unlock the bootloader again?
I remember when doing all this for my phone the first time, since my phone was a Chinese model, 6833 I believe, I went through hell and back for several weeks until it flashed and took the current ROM properly. Something about buggy firmware in that paritcular model, although it's been so long I forgot all the details. I'm worried that I'll run into a similar situation with 4.4.4... Thanks for any help, truly appreciated.
Click to expand...
Click to collapse
I tried to update to KK via Sony Pc Companion, but it says my phone is up to date. I assume it says that because it's not seeing any official firmware, due to the flashed ROM. Even when choosing the option to "repair my phone" which says it will re-install the latest available firmware, it states that there is no software available for my device. If memory serves me correct, I must first flash back to my oldest stock firmware that came with my phone, then I can use PC companion to update to KK, and then maybe unlock bootloader and root again, and then I'll be able to flash new ROMs and have a working mobile network, does that sound right?
Out of curiosity, since it's 4.4.4 ROMs that don't seem to work (network wise), doesn't that mean 4.3 ROMs should find a network just fine?
Spixe1 said:
I tried to update to KK via Sony Pc Companion, but it says my phone is up to date. I assume it says that because it's not seeing any official firmware, due to the flashed ROM. Even when choosing the option to "repair my phone" which says it will re-install the latest available firmware, it states that there is no software available for my device. If memory serves me correct, I must first flash back to my oldest stock firmware that came with my phone, then I can use PC companion to update to KK, and then maybe unlock bootloader and root again, and then I'll be able to flash new ROMs and have a working mobile network, does that sound right?
Out of curiosity, since it's 4.4.4 ROMs that don't seem to work (network wise), doesn't that mean 4.3 ROMs should find a network just fine?
Click to expand...
Click to collapse
I cant remember where/when the baseband changed, it has been updated several times. I would just go straight to 4.4.4 and not worry about PC Companion - Just use the latest flashtool (http://flashtool.net).
Grab a 4.4.4 (aka x.x.x.108 or .118) FTF from the FTF thread in the dev section and flash that. That will wipe all user data (so back it up) and install a new /system image. You will have to root the device again abut 4.4.4 is easy to root now with the easyroot tool. Then you should be on the latest baseband and all the new ROMs should work - 4.4.4 and 5.0.x
Thanks blueether, I'll give that a go and report back (hope you don't mind). Here's hoping (since i know the 6833 chinese model is finicky)...
Spixe1 said:
Thanks blueether, I'll give that a go and report back (hope you don't mind). Here's hoping (since i know the 6833 chinese model is finicky)...
Click to expand...
Click to collapse
You mentioned I should get a *.108 or 118 in order to get the ROMs working again (mobile network wise).
I found in the FTF repository: STOCK ROM] [FTF] Xperia Z Ultra 6833 14.4.A.0.118 "VodaFone UK" and also "SRF FR".
I'm using a 6833 in China, however. My guess is these wouldn't work because they require different networks.
Doesn't matter? Or perhaps, I just flash any 118, and that will give me the newest firmware. Then I can flash other ROMs (that use the same firmware), which will have updated modems, and consequently get my network signal back. Is this how it works? Want to be 100% sure before I go flashing with firmware that would make my phone unusable. Thanks for any advice!
Spixe1 said:
You mentioned I should get a *.108 or 118 in order to get the ROMs working again (mobile network wise).
I found in the FTF repository: STOCK ROM] [FTF] Xperia Z Ultra 6833 14.4.A.0.118 "VodaFone UK" and also "SRF FR".
I'm using a 6833 in China, however. My guess is these wouldn't work because they require different networks.
Doesn't matter? Or perhaps, I just flash any 118, and that will give me the newest firmware. Then I can flash other ROMs (that use the same firmware), which will have updated modems, and consequently get my network signal back. Is this how it works? Want to be 100% sure before I go flashing with firmware that would make my phone unusable. Thanks for any advice!
Click to expand...
Click to collapse
any 108 or 118 for the c6833 should work just fine

[E2312]SIM2 slot not working on 6.0.1 - SOLVED

Hi guys, I need some help!
Everything was fine on Android 5.0
Until I repaird device using XCompanion (to the lastest 6.0.1)
Now only SIM1 slot is functioning. Nothing happens when I insert SIM2 slot
Current build number: 26.3.B.0.131
Has anyone got this problem
Thank you!
//Update:
I flashed back to build 26.1.B.2.102 (android 5.0), 2 SIMcard slots worked normally.
Then I tried to update via OTA, but after the first update to 26.1.B.2.129 (still android 5.0), the SIM2 slot didn't work anymore.
Now I'm desperated.
//Solved
I used old version of Flashtool (18.5) instead and it worked!
paracetamol183 said:
Hi guys, I need some help!
Everything was fine on Android 5.0
Until I repaird device using XCompanion (to the lastest 6.0.1)
Now only SIM1 slot is functioning. Nothing happens when I insert SIM2 slot
Current build number: 26.3.B.0.131
Has anyone got this problem
Thank you!
//Update:
I flashed back to build 26.1.B.2.102 (android 5.0), 2 SIMcard slots worked normally.
Then I tried to update via OTA, but after the first update to 26.1.B.2.129 (still android 5.0), the SIM2 slot didn't work anymore.
Now I'm desperated.
Click to expand...
Click to collapse
Maybe you've Flash single sim rom

Galaxy S6 Edge G925W8 New Stock Build Not letting back to previous Stock Build

Hi all,
the new build for G925W8 is out MM. G925W8VLU5CPI4 and it messed up the bootloader and modem/radio. its working fine but i want to downgrade back to MM. G925W8VLU4CPG5 which the new build replaced. but now when i odin the old build baesband goes missing and no network signal. then i flashed the modem from new build and baseband and network came back........my question is why modem/radio from pg5 build is not working anymore? how can I make it work? i flashed it and also other older modems many times with clean installs and none is working no baseband. your help would be greatly appreciated. thanks
kma221 said:
Hi all,
the new build for G925W8 is out MM. G925W8VLU5CPI4 and it messed up the bootloader and modem/radio. its working fine but i want to downgrade back to MM. G925W8VLU4CPG5 which the new build replaced. but now when i odin the old build baesband goes missing and no network signal. then i flashed the modem from new build and baseband and network came back........my question is why modem/radio from pg5 build is not working anymore? how can I make it work? i flashed it and also other older modems many times with clean installs and none is working no baseband. your help would be greatly appreciated. thanks
Click to expand...
Click to collapse
Because once you upgrade your firmware you can no longer downgrade. So when you flashed 5CPI4 you can only flash firmware that is 5xxxx. You can not downgrade to 4xxxx firmware. They have different modems and bootloaders.

[HELP] 925I updated to 7.0... no network connectivity

Hello!
I just updated my 925I (Mexico-Telcel) from MM to N and found out that after that I get no carrier connectivity, wifi works fine. Update was done through smart switch and noticed that imei doesn't match with the one on the back of the phone.
I've always tinkered with my phones and the one time I didn't, it bit me in the ass.
Anyway,
Baseband version is G925IDVU3FQF3
Build Number is NRD90M.G925IDVU3FQF7
I've been reading and reading but so far, I don't know if I can flash an unbloated version (925F) or not or if I can flash only the MM modem in hopes for the problem to be solved.
Any advice will be appreciated.

Oreo for Hong Kong Region is out!

https://www.sammobile.com/firmwares/galaxy-c7/SM-C7000/TGY/download/C7000ZHU3CRI5/236514/
But it might be t-mobile rom. I flashed one of open china oreo roms (and it was awesome except chinese stuff) and when i was downgrading i chose the lastest 7.0.
When i flashed the firmware, i realized that it was a t-mobile rom and had t-mobile's settings section (i couldn't even get signal).
Can someone confirm that this is not a t-mobile rom?
No its not tmobile i have updated via software upadte ota. It works fine. No signal problem.C7000ZHU3CRI5
since .i updated my device to oreo my fingerprint sensor is not working.i have tried to flash but i cant enter odin mode as well.any suggesions plz
since i update my c7000 to 8.0 oreo android it has been freezing but my task will keep on working normal but i cant operate until i press the lock key and open it back again. Astime goes on the level of it freezing become frequent what should i do please

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