Develop Bugs

Professional Help and advise needet.

Hello to everybody,
First of all sorry for my english.
So about what is the tread
There is arround 10 bricked phones in Bulgarian Android Forum.Becouse we cant find where is the problem I decide to ask here.
Problem: After flashing stock test 4.3 and downgrade after back to 4.1.2 the result is --IMEI 0049 and Permanent Test Mode.
what we know until now:
Phones bought from shops for phones reported they downgrade back without issues
Phones bought from mobile operators -bricked IMEI
Flashing again 4.3 after brick do not restore IMEI
P.s
Sorry if the tread is on wrong place and 10x for your opinions about problem

Find someone knows English better to translate it for you
Impact on device/How I know I have corrupted EFS
When there is EFS partition is corrupted, device loses IMEI and due to this device can't gets connected to network. Baseband info also sometimes shows unknown.
-Check your IMEI in setting / by dialling *#06# if it is null OR if it starts with 0049** then IMEI is generic and corrupted. In Normal case IMEI which you can see in device setting or dialing *#06# is exactly same you can see on bill/box/sticker under battery compartment
-If you are unable to connect to network in spite of correct IMEI, chance are
A. Your device is Locked to specific Network OR
B. Your device is banned due to tempered IMEI
-If your AP,CP,CSC all are correct and even you are getting error (unknown CSC XXX) on kies update, it may be due to corrupt Product code in EFS. Read This for detail.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2420881

If you dont have efs backup then you probably need the z3x box to make repair for your imei and change it to the original one didnt test the ariza patch on this kind of problem but why not give it a shot
Sent from my GT-N7100 using xda app-developers app

Lu 6200 imei unknown

lu6200 imei unknown i tired flash to stock 186 firmware many times but still getting a same result, tired to even restoring imei using LGBackupImei and also try with 51rom but its only restore imei ones if i reboot my phone or factory restore then imei remain unknown again , is there any way to fix imei permanently ? please help me thanks to all in advance

Help Needed: QCN with no imei for 4g

Hello,
I need help in flashing a qcn file on my phone but I am encountering a problem.
I'd elaborate a bit more so that you guys can understand the problem I am having.
I flashed the d855 qcn with removed imei after creating a backup of my phone's qcn from this thread as I could not connect to 4g bands after flashing marshmallow kdz.
I created a backup of my original qcn before flashing.
It went as normal and the phone restarted. As I checked further, it only detects 3g and 2g signals HOWEVER my imei remained unchanged as the file did not have an imei.
Now, I cannot flash any qcn files on my phone as they all have an imei number in them, not even my backup, since it has my original imei.
I currently have 3 qcn files which might work but I am unable to test them since all of them have their respective imei numbers which are needed to be removed from the qcn file.
If someone could be so kind to remove them and send them back, I'd be extremely grateful.
The file with the removed qcn is this : link
NOTE: the qcn not working only 3g 0 imei.qcn is the only qcn I AM STILL ABLE TO FLASH. The others have imei in them, which I am unable to flash.
Please PM me so I can send the link to the 3 qcn files which need the imei removed.
Please help.
Thanks,
Mridul Negi

Bump.
Anyone who can help removing the imei number from the qcns please pm me.
Thanks

Negi9 said:
Bump.
Anyone who can help removing the imei number from the qcns please pm me.
Thanks
Click to expand...
Click to collapse
see this thread, READ CAREFULLY!
https://forum.xda-developers.com/lg-g3/help/4g-lte-capability-imei-repair-t3007524
This will explain what really happen to your phone.

imei null baseband unknown efs partition problem

hi
i have a g3 d855tr , last night i have flashed with a kdz using lg flash tool 2014, after that i think efs partition is removed and i cant get any signal, isee all time service is disable / no service on the screen.
software version baseband unknown, imei unknown
how can i resolve this
i have rooted phone and installed xposed to get an imei but still no service i flash several g3 modems on other xda topic still no service
i think i need to find a efs backup or something ?
please help
thanks

Question No IMEI and baseband after update. Camera also stop working

After I updated my phone I can no longer use sik card and my imie (slot 1) unknown. Imie (slot 2) unkonw baseband unknown. How to fix this.
I tried my z3x tool but got an error..
Cp (modem) version is not detected. Reboot and repeat if still same reflash

You can fix it by flashing software with odin.

chimera tool you can try with it