Database Develop

[Q] Baseband version unknown, no IMEI, doesn't recognize SIM

So basically I have a phone (not mine) that says Baseband version: unknown, no IMEI when dialing *#06# and doesn't recognize SIM card at all.
Apparently the phone is running stock KK9 2.3.6. AFAIK it has not been rooted or had custom ROM's installed.
The owner said it recently started dropping from network, and usually didn't reconnect at all. This would indicate a broken baseband chip, since now it doesn't even recognize the card?
Any suggestions what to try?

jusutus said:
So basically I have a phone (not mine) that says Baseband version: unknown, no IMEI when dialing *#06# and doesn't recognize SIM card at all.
Apparently the phone is running stock KK9 2.3.6. AFAIK it has not been rooted or had custom ROM's installed.
The owner said it recently started dropping from network, and usually didn't reconnect at all. This would indicate a broken baseband chip, since now it doesn't even recognize the card?
Any suggestions what to try?
Click to expand...
Click to collapse
Try Flashing Stock ROM, Follow link for instructions.
http://forum.xda-developers.com/showthread.php?t=1424997

Thanks for the quick reply. Unfortunately flashing did not help.

EFS corrupted? Any backup done?

No backup done.

you might wanna try this see if it helps... http://forum.xda-developers.com/showthread.php?t=1264021

Apparently there is a backup of the original EFS file - is it possible to just restore it?

do u meant the original files under /efs/? If that's what you meant, try to follow the steps in the previous SGS2 link. Else if it's an external EFS backup image, then there should be no problem restoring it ie. with EFSProBackup. good luck...

Now it's getting even stranger;
the phone works fine when the battery is removed for about half an hour and SIM card installed after that. I left the phone on my desk without the battery for the night, and now it works just fine. But I know that when I reboot it, it loses the baseband once again.

You mentioned you've flashed a stock rom before, which method did you use, pc odin or cwm/mobile odin? did u do a full wipe?
After restoring ur EFS, do a nand backup if you need to then wipe data/dalvik/cache from recovery mode and reflash via pc odin with a stock rom in ur region...

It look like to me you are having hardware problem. Send it back for replace or repairing..
Sent from my GT-N7000 using XDA App

no sim after custom rom, please help

hi everyone,
i was installing new custom rom and i formatted everything in CWM and installed custom rom with sideload, now i have OS working but no signal, i am sure i have deleted my modem or/and IMEI details. because when i go to system information it displays Unknow for IMEI. i have tried with chamelephon app, with my orignals IMEI numbers and with auto generated numbers from chamelephon app but after reboot still no signals and IMEI info. please help.
Regards

Infinix x510 NVRAM Errors

i have installed quite a few roms in my Infinix X510, when i decided to go back to stock rom for android one i get a NVRAM WARNING Err=0x01. and second sim card not recognizing SIM card.
Followed the fix detailed here https://journal.hovatek.com/how-to-fix-nvram-warning-err-0x10-on-an-infinix-hot-2-x510/ Now my phone has a NVRAM WARNING Err=0x02 and still dosent recognise my second sim. No matter which rom i flash same problem persists.
Any Help will be highly appreciated. Thanks in advance.
Here are some screenshots.
http://imgur.com/a/5cR8e
CYNOGENMOD 13 is out...at least i have that going for me
http://forum.xda-developers.com/hot-2/development/rom-cyanogenmod-13-t3442726

Scarkinyua said:
i have installed quite a few roms in my Infinix X510, when i decided to go back to stock rom for android one i get a NVRAM WARNING Err=0x01. and second sim card not recognizing SIM card.
Click to expand...
Click to collapse
Flash this rom using SP flash tool
https://mega.nz/#!JRsTFYbC!llzMEN4RoKQpRzoRbu5ESR9p2Cfujb6uyG2nhLav57o
It is original Android one lollipop
And if you're into custom roms, when you flash TWRP recovery go to backup section and backup imei, keep it with you so if you ever faced this problem again just restore imei backup.

IMEI unknown after flashing custom rom

I flashed Android 12 custom rom which messed up my baseband and now IMEI is shown unknown (wifi, Bluetooth, mobile network not working)
So i rolled back to my previous stable rom -
PixelExperience_Plus_rosy-11.0-20210313-0535-OFFICIAL.
But still no network, wifi and Bluetooth.
Please help me.
I tried one way as below but not sure if it is correct -
I tried a qcn file downloaded from some site and updated with my original IMEI and tried to restore it using QPST (QPST detects the phone successfully) but it gives some error (phone sent invalid reply)
Please help me with the easiest option.

vvstorm2 said:
I flashed Android 12 custom rom which messed up my baseband and now IMEI is shown unknown (wifi, Bluetooth, mobile network not working)
So i rolled back to my previous stable rom -
PixelExperience_Plus_rosy-11.0-20210313-0535-OFFICIAL.
But still no network, wifi and Bluetooth.
Please help me.
I tried one way as below but not sure if it is correct -
I tried a qcn file downloaded from some site and updated with my original IMEI and tried to restore it using QPST (QPST detects the phone successfully) but it gives some error (phone sent invalid reply)
Please help me with the easiest option.
Click to expand...
Click to collapse
check with this one
XIAOMI MI5 REPAIR IMEI WITHOUT ROOT-WITHOUT Unlock bootloader - GSM-Forum
imei repair succesfully completed without unlock bootloader within 70 hours and without twrp-root..no headache.no waste of time...just 3 minutes
forum.gsmhosting.com

Imei becomes unknown during flashing custom rom

I have tried many custom roms but when i flash it, my imei number becomes unknown and i can't use my wifi and my sim is not detected. I tried and followed every steps but it happened every time. Then when i used the motorola rescue tool and flashed my own firmware i got my imei number back and sim and wifi are also working. I want to use a custom rom, which custom rom should i use?

aniruddhapal said:
I have tried many custom roms but when i flash it, my imei number becomes unknown and i can't use my wifi and my sim is not detected. I tried and followed every steps but it happened every time. Then when i used the motorola rescue tool and flashed my own firmware i got my imei number back and sim and wifi are also working. I want to use a custom rom, which custom rom should i use?
Click to expand...
Click to collapse
I tried with leveno app and I can back it up, but still got null baseband not found. I know I asked from you a lot but is there anyway backup EFS and presit (sorry my spelling) into an twrp backup?
Because even I flash the stockrom, it dosent find IMEI numbers and the carrier