Develop Bugs

[Q] i dont have signal and imei on shg t999

i use odin for re store the phoe after restore no imei no network please help.

What did you do?!?!
Kidding...
This is a very common issue, and there is a thread in the development section on how to restore your imei.

please help
Hello,
Unfortunately, I'm having the same problem and have been unsuccessful at finding the right forum . After unrooting my Galaxy SGH-T999, I lost service "no service." I also have the circle with the line crossing it, only WiFi is working; Baseband version, Network, Mobile network type, as well as the IMEI appear as unkown. Please help me or re direct me with the link, I have tried everything and nothing.

It's actually not in our section. But with a simple Google search:
http://forum.xda-developers.com/showthread.php?t=1801997
Looks like I'll be adding this to the FAQ.

More help please
Thanks for the quick response; however, what is it that I need to do to get back service. Make a backup, restore, or inject imei? Also, i'm having trouble understanding the thread. Is it to much to ask for to give me a little guidance of what exactly is it that I have to do. I'll appreciated it a lot.

millan_83 said:
Thanks for the quick response; however, what is it that I need to do to get back service. Make a backup, restore, or inject imei? Also, i'm having trouble understanding the thread. Is it to much to ask for to give me a little guidance of what exactly is it that I have to do. I'll appreciated it a lot.
Click to expand...
Click to collapse
I'd ask about what you don't understand in the thread about restoring IMEI.
Sent from my SGH-T999 using xda app-developers app

Well, to be honest I don't know where to even start.
1. I downloaded QPST program
2. AT&T and TMO Phones (or any variant thereof)... I don't know if this applies to my process.
Option1:Using the stock dialer dial *#7284#.... When I do that my phone says: Mobile network not available.
Option 2: Stock ROM w/ unsecured kernal flash this file by drothenberger and geek HERE!... lost there
Install QuickShortcutMaker... don't know where from
Open it and type IOT in the search box... don't know what that is.
Click on the entry that says IOTHiddenMenu / IOTHiddenMenu / com.android.hiddenmenu/com.android.hiddenmenu.IOTHiddenMenu
Click OK..... ???
3. The Following Steps Applies to all phones!
Put phone into RMNET + DM + MODEM mode... what do those abbreviation mean?
IMEI Injection:
If you have lost your IMEI and did not have a backup made this is how PureMotive and I were able to get his IMEI restored.
Open RF NV Item Manager from the bin folder found in Program Files folder/Qualcomm/QPST (RF NV Manager is no longer accessible from the
(open RF and NV?)
start menu or from inside QPST Configuration).
Click on Setting menu in RF NV Item Manager and select Comport.
Select your phone from the list of ports and click ok.
Go to File menu and select Read From Phone.
You will get a list of NV items and their values from your phone.
Look for item NV_UE_IMEI_I it will be item number 550 you can do a search for it using the search.
I'm so upset, disappointed, and mad at myself. I just bought this phone and I already broke it. I been trying to fix it all day and no luck. Please if anyone could make this pain for me. I don't understand the abbreviations or where it is that I need to start.
Thank you

millan_83 said:
Well, to be honest I don't know where to even start.
1. I downloaded QPST program
2. AT&T and TMO Phones (or any variant thereof)... I don't know if this applies to my process.
Option1:Using the stock dialer dial *#7284#.... When I do that my phone says: Mobile network not available.
Option 2: Stock ROM w/ unsecured kernal flash this file by drothenberger and geek HERE!... lost there
Install QuickShortcutMaker... don't know where from
Open it and type IOT in the search box... don't know what that is.
Click on the entry that says IOTHiddenMenu / IOTHiddenMenu / com.android.hiddenmenu/com.android.hiddenmenu.IOTHiddenMenu
Click OK..... ???
3. The Following Steps Applies to all phones!
Put phone into RMNET + DM + MODEM mode... what do those abbreviation mean?
IMEI Injection:
If you have lost your IMEI and did not have a backup made this is how PureMotive and I were able to get his IMEI restored.
Open RF NV Item Manager from the bin folder found in Program Files folder/Qualcomm/QPST (RF NV Manager is no longer accessible from the
(open RF and NV?)
start menu or from inside QPST Configuration).
Click on Setting menu in RF NV Item Manager and select Comport.
Select your phone from the list of ports and click ok.
Go to File menu and select Read From Phone.
You will get a list of NV items and their values from your phone.
Look for item NV_UE_IMEI_I it will be item number 550 you can do a search for it using the search.
I'm so upset, disappointed, and mad at myself. I just bought this phone and I already broke it. I been trying to fix it all day and no luck. Please if anyone could make this pain for me. I don't understand the abbreviations or where it is that I need to start.
Thank you
Click to expand...
Click to collapse
i foun way to restore imei http://forum.xda-developers.com/showthread.php?t=1804123&page=28

kiruba8 said:
i foun way to restore imei http://forum.xda-developers.com/showthread.php?t=1804123&page=28
Click to expand...
Click to collapse
Many people have reported getting only edge speeds after using this method.

kiruba8 said:
i foun way to restore imei http://forum.xda-developers.com/showthread.php?t=1804123&page=28
Click to expand...
Click to collapse
There's more to the issue than simply restoring your IMEI.
Sent from my Galaxy Nexus using xda premium

i foun way to restore imei http://forum.xda-developers.com/show...804123&page=28
Click to expand...
Click to collapse
Well, I don't really know what to do then. Did this method work for you? And if it did, do you have 4G?

Check this thread --> http://forum.xda-developers.com/showthread.php?t=879189
and watch this video --> http://www.youtube.com/watch?v=CQkUozRhGvw
millan_83 said:
Well, I don't really know what to do then. Did this method work for you? And if it did, do you have 4G?
Click to expand...
Click to collapse

Could I sent m galaxy s3 to Samsung so they can fix it for me?

millan_83 said:
Could I sent m galaxy s3 to Samsung so they can fix it for me?
Click to expand...
Click to collapse
If you're competent enough to root and flash a ROM, you're competent enough to follow Peoplearmy's guide to restoring your 4G. If not, then you you need to go back use Triangle Away to get rid of the flash counter and then Odin back to a factory TouchWiz ROM to erase your evidence of tampering with the phone.
Follow the guide: http://forum.xda-developers.com/showthread.php?t=1801997. Just remember since people have been making this mistake, you're not done when you inject your IMEI.
-IMEI injection
-Backup
-Restore

Ok well don, I followed the entire guide, everything on post #3, and am still only getting 2g. When I do *#06# it shows me exactly the same imei # as on the back of my phone, and I repeated EVERYTHING in the post at least 3 times, and still only get 2g. I literally have no idea, I don't think the radio is bad haha, it happened with a flash.

millan_83 said:
Well, I don't really know what to do then. Did this method work for you? And if it did, do you have 4G?
Click to expand...
Click to collapse
opps i m trying.

milesmarrero said:
Ok well don, I followed the entire guide, everything on post #3, and am still only getting 2g. When I do *#06# it shows me exactly the same imei # as on the back of my phone, and I repeated EVERYTHING in the post at least 3 times, and still only get 2g. I literally have no idea, I don't think the radio is bad haha, it happened with a flash.
Click to expand...
Click to collapse
If you've truly followed that guide completely, make a post in that thread to see what help you can get.

Optimus g show imei :00000....

Hi guys
After install a new rom my phone don,t connect to my network.
The network tell me "the sim is not registred and find the imei number show 000000000000000.
I follow many discussion on the forum and the big problem is that I
don't make backup of EFS partition.
Can someone help me to rewrite the imei number writed on the battery cover ?
Inviato dal mio novo9-Spark con Tapatalk 2

saverik said:
Hi guys
After install a new rom my phone don,t connect to my network.
The network tell me "the sim is not registred and find the imei number show 000000000000000.
I follow many discussion on the forum and the big problem is that I
don't make backup of EFS partition.
Can someone help me to rewrite the imei number writed on the battery cover ?
Inviato dal mio novo9-Spark con Tapatalk 2
Click to expand...
Click to collapse
When did you unlock with freegee? If its after February you have efs backups in /sdcard/freegee automatically
Sent from my LG-LS970 using xda app-developers app

Since IMEI spoofing is illegal in most country, the IMEI is most likely encrypted. I don't know how it is input on the Optimus G, but I had an issue back with my Galaxy S, and let me tell you, just hope you have a backup!!

t1mman said:
Since IMEI spoofing is illegal in most country, the IMEI is most likely encrypted. I don't know how it is input on the Optimus G, but I had an issue back with my Galaxy S, and let me tell you, just hope you have a backup!!
Click to expand...
Click to collapse
I want write my imei.The number is written on the battery cover and on the box of phone.
I live in Italy and isn't illegal to rewrite the own IMEI.
I don't have a backup and don't root the phone with fregee but whit different procedure.
I discovered this forum too late...
I approach this forum after many search in internet e too late for know to make a EFS backup.
My problem now is to rewrite my personal imei..

I follow this http://forum.xda-developers.com/showthread.php?t=2161498
but can't enter in diag mode..my e975 can't be recognize by DFS TOOL ..
can help me someone?

saverik said:
I follow this http://forum.xda-developers.com/showthread.php?t=2161498
but can't enter in diag mode..my e975 can't be recognize by DFS TOOL ..
can help me someone?
Click to expand...
Click to collapse
This only work on CDMA phone.

chadouming said:
This only work on CDMA phone.
Click to expand...
Click to collapse
thanks for the reply...can you tell me an software for my phone?:good:

Only jtag can help you.this is the only way to solve your problem fast and secure.
Sent from LG E975 pwd by CM 10.1

kimitza said:
Only jtag can help you.this is the only way to solve your problem fast and secure.
Sent from LG E975 pwd by CM 10.1
Click to expand...
Click to collapse
this is terrible.. but with jtag i have to disassembly my phone?
is not for me..
other solution????

no. only JTAG or you have the internal LG IMEI repair tool

Hmm, I am coming from Samsung world and there flashing a Samsung ROM would always restore the IMEI, not the case with LG?
//I always make backups regardless
//Learn people - ALWAYS MAKE A BACKUP FIRST! BACKUP EVERYTHING!

Optimus g E975 show imei :00000....
skdubg said:
no. only JTAG or you have the internal LG IMEI repair tool
Click to expand...
Click to collapse
where can I found it????? in internet i don't found...

you cant find it. its INTERNAL

JTAG is a tool, made by RIFF, not just a software.Any respectable gsm service has one.Rewriting software with JTAG costs between 10 and 20 euros,depending on the phone.At least here in Romania it costs this much.Don't know other countries.
Bottom line, writing the IMEI it's not a DIY job.it can be done only with proper tools,on a specialised center.
I think there would be another way,but i'm not sure, you need to talk to shelnutt or autoprime to confirm or not.
If the EFS backup from other phone can be decompiled,and the IMEI section is find,change the existing imei on that backup with yours, recompile and restore it with freegeee.i repeat,this is just a theory.
Another question,what method did you use to unlock bootloader?

Bertat Senate
kimitza said:
JTAG is a tool, made by RIFF, not just a software.Any respectable gsm service has one.Rewriting software with JTAG costs between 10 and 20 euros,depending on the phone.At least here in Romania it costs this much.Don't know other countries.
Bottom line, writing the IMEI it's not a DIY job.it can be done only with proper tools,on a specialised center.
I think there would be another way,but i'm not sure, you need to talk to shelnutt or autoprime to confirm or not.
If the EFS backup from other phone can be decompiled,and the IMEI section is find,change the existing imei on that backup with yours, recompile and restore it with freegeee.i repeat,this is just a theory.
Another question,what method did you use to unlock bootloader?
Click to expand...
Click to collapse
Thank's for reply..
my wife had similar lg optmus G ( we buy twin for our wedding anniversary:laugh and before I rooted her phone I make a backup of her EFS folder.
Can I use her folder for that?...but the question is: how ?
Thank's for all help you can give me...
""Another question,what method did you use to unlock bootloader?""" my answer is "I 'm studyng... "
I want mistake no more one time if Ican

rogem_kk said:
Hmm, I am coming from Samsung world and there flashing a Samsung ROM would always restore the IMEI, not the case with LG?
//I always make backups regardless
//Learn people - ALWAYS MAKE A BACKUP FIRST! BACKUP EVERYTHING!
Click to expand...
Click to collapse
Even with a samsung, if you'd screwed the partitions real good, you'd lose everything, even the backup.
saverik said:
Thank's for reply..
my wife had similar lg optmus G ( we buy twin for our wedding anniversary:laugh and before I rooted her phone I make a backup of her EFS folder.
Can I use her folder for that?...but the question is: how ?
Thank's for all help you can give me...
""Another question,what method did you use to unlock bootloader?""" my answer is "I 'm studyng... "
I want mistake no more one time if Ican
Click to expand...
Click to collapse
You can try it, but most likely not.
You would need to decrypt the file, replace with your IMEI and encrypt it. copy it and it "would" work, theorically.
OR, you could call your provider and ask them if they can do it. Might not be worth the hassle!

t1mman said:
Even with a samsung, if you'd screwed the partitions real good, you'd lose everything, even the backup.
You can try it, but most likely not.
You would need to decrypt the file, replace with your IMEI and encrypt it. copy it and it "would" work, theorically.
OR, you could call your provider and ask them if they can do it. Might not be worth the hassle!
Click to expand...
Click to collapse
Yes I can resolve sending the phone in service...But my wife told me "don't to do that""
For me will a victory if I rewrite my Imei because in the future i will change new rom... and want learn how to...
how I can enter in Diag Mode?

you're not sending it for waranty, the "waranty" was void when you changed the rom. If your provider gets to know that they will void it "officialy".
You may contact the service to know if they can rewrite an EMEI, and ask them how much they charge for it.
The FIRST thing you should do before installing a custom rom is a backup of the EFS partition:
http://forum.xda-developers.com/showthread.php?t=2161611
or, if you have installed freeGee, you might already have a backup in the FreeGee folder in img format
If not, then you will need to open thoses .img, edit them with your IMEI and reflash them

Not that easy.i didn't find any tool to decompile those images into workable stuff.like i said,maybe you will find more help on irc channel.asking will not hurt
Sent from LG E975 pwd by CM 10.1

kimitza said:
Not that easy.i didn't find any tool to decompile those images into workable stuff.like i said,maybe you will find more help on irc channel.asking will not hurt
Sent from LG E975 pwd by CM 10.1
Click to expand...
Click to collapse
I have installed the EFS Backup folder of my wife on my phone...it's all right.
my phone work good and the network see my phone... but there's a problem... my phone and my wife's phone have the same Imei number.!!!
i think that is not a good idea...
TO DO LIST:
1) Have a backup folder. :good:
2) Change the Imei with my Imei number in Backup Folder .
I have to find a tool for change the number in the image...
thanks at all for the help... we will win..

EFS problem

Hi guys i was trying out the chinese 4.2.2 on my G Pro and it messd up my EFS so now all i get is no service all the time.
Through extensive googling i found this guide and it helped me atleast get the imei to stop being unknown.
However when in the DFS CDMAtool it shows that the RF is in CDMA cellular and i am on a GSM CArrier is there a setting to change this so that my phone checks for both or only GSM.
Any help would be appreciated eg:-
EFS Files (Zeroed out) from F240L model preferrably as thats what i got
Assistnce on the usage of DFS CDMATool to rectify the above issue
Another method to fix EFS
THanks
UPDATE:
FIXED THE PROBLEM PHONE NOW HAS SIGNAL

Good work
care to write some tips/guidelines for anyone needing this in future

Brilliant work!
A guide will be very appreciated
Sent from my LG-E980 using XDA Premium HD app

mudu8 said:
Hi guys i was trying out the chinese 4.2.2 on my G Pro and it messd up my EFS so now all i get is no service all the time.
Through extensive googling i found this guide and it helped me atleast get the imei to stop being unknown.
However when in the DFS CDMAtool it shows that the RF is in CDMA cellular and i am on a GSM CArrier is there a setting to change this so that my phone checks for both or only GSM.
Any help would be appreciated eg:-
EFS Files (Zeroed out) from F240L model preferrably as thats what i got
Assistnce on the usage of DFS CDMATool to rectify the above issue
Another method to fix EFS
THanks
UPDATE:
FIXED THE PROBLEM PHONE NOW HAS SIGNAL
Click to expand...
Click to collapse
How did you fix your phone???

Guide
Sorry for the late Reply.
This is what i did but remember mine is F240L.
Let me explain my problem.
I had LG G2 V5 on my phone then i saw that there's a chinese 4.2.2 which is where i lost my signal completely.
On researching i found my IMEI is unknown when a sim is in the phone but its there when no sim.
After restoring my IMEI with this method.
I downloaded stock TOT+DLL for my phone flashed it with LG FLASH TOOL.
I still got no signal then i realised that there was an update to my stock firmware to version F240L10Z.
I downloaded it as a KDZ and flashed it this time using the LG Mobile Support Tool in LG PC Suite.
After the phone restarted my signal came back to my relief.
Try it if something isn't clear tell me ill try to help.

mudu8 said:
Sorry for the late Reply.
This is what i did but remember mine is F240L.
Let me explain my problem.
I had LG G2 V5 on my phone then i saw that there's a chinese 4.2.2 which is where i lost my signal completely.
On researching i found my IMEI is unknown when a sim is in the phone but its there when no sim.
After restoring my IMEI with this method.
I downloaded stock TOT+DLL for my phone flashed it with LG FLASH TOOL.
I still got no signal then i realised that there was an update to my stock firmware to version F240L10Z.
I downloaded it as a KDZ and flashed it this time using the LG Mobile Support Tool in LG PC Suite.
After the phone restarted my signal came back to my relief.
Try it if something isn't clear tell me ill try to help.
Click to expand...
Click to collapse
Thanks for the reply, I'm deliberating whether I should do this or not because mine is E988. Also, I can't find a TOT for my model although I have read that there is one out there

jhb019 said:
Thanks for the reply, I'm deliberating whether I should do this or not because mine is E988. Also, I can't find a TOT for my model although I have read that there is one out there
Click to expand...
Click to collapse
At first i was overwhelmed but once you do it, its pretty simple.
The TOT for the E980 is even easier to find as its the more popular device on XDA but i have the links to them over here
Though its in chinese you will figure it out its simple.

mudu8 said:
At first i was overwhelmed but once you do it, its pretty simple.
The TOT for the E980 is even easier to find as its the more popular device on XDA but i have the links to them over here
Though its in chinese you will figure it out its simple.
Click to expand...
Click to collapse
I just reread your problem and realised that mine is different - my IMEI doesn't show at all, even without a SIM.

jhb019 said:
I just reread your problem and realised that mine is different - my IMEI doesn't show at all, even without a SIM.[/Q]
Follow this guide
It works for restoring the IMEI
Use the DFS CDMATOOL to get the info from the phone.
Write it down on a paper.
Then get Zeroed EFS files from the link don't worry Optimus G files work as that's what i used.
Replace the ones in the phone with those.
Reopen DFS CDMATOOL and copy back as muchof the info you wrote down as possible to the new EFS Files.
Reboot the phone to see if the info STUCK.
Obviously at this point the signal won't have reappeared.
Download the TOT +DLL for your phone flash it. If the signal is restored avoid the next step.
Then download a KDZ for your phone and flash it. (thinking about it skip the TOT part and jump to this.)
Your signal should be restored.
Hope this helps.
Click to expand...
Click to collapse

mudu8 said:
jhb019 said:
I just reread your problem and realised that mine is different - my IMEI doesn't show at all, even without a SIM.[/Q]
Follow this guide
It works for restoring the IMEI
Use the DFS CDMATOOL to get the info from the phone.
Write it down on a paper.
Then get Zeroed EFS files from the link don't worry Optimus G files work as that's what i used.
Replace the ones in the phone with those.
Reopen DFS CDMATOOL and copy back as muchof the info you wrote down as possible to the new EFS Files.
Reboot the phone to see if the info STUCK.
Obviously at this point the signal won't have reappeared.
Download the TOT +DLL for your phone flash it. If the signal is restored avoid the next step.
Then download a KDZ for your phone and flash it. (thinking about it skip the TOT part and jump to this.)
Your signal should be restored.
Hope this helps.
Click to expand...
Click to collapse
Unfortunately, I'm having the low battery error on the kdz flasher at the moment. No one has found a fix yet so I guess my only hope is getting the money for the phone back from my credit card company (a perk of living in the UK) as the seller is not interested.
Thanks for your time and replying to my posts quickly. If I don't get my money back and someone does find a fix for the low battery error, I will definitely be trying this out.
Thanks
jhb019
Click to expand...
Click to collapse

mudu8 said:
Sorry for the late Reply.
This is what i did but remember mine is F240L.
Let me explain my problem.
I had LG G2 V5 on my phone then i saw that there's a chinese 4.2.2 which is where i lost my signal completely.
On researching i found my IMEI is unknown when a sim is in the phone but its there when no sim.
After restoring my IMEI with this method.
I downloaded stock TOT+DLL for my phone flashed it with LG FLASH TOOL.
I still got no signal then i realised that there was an update to my stock firmware to version F240L10Z.
I downloaded it as a KDZ and flashed it this time using the LG Mobile Support Tool in LG PC Suite.
After the phone restarted my signal came back to my relief.
Try it if something isn't clear tell me ill try to help.
Click to expand...
Click to collapse
The guide that you posted is showing only for sprint LG Optimus G and not for a LG Optimus G Pro. Do you think you can do a step-by-step guide for people like myself who has the missing IMEI number issue?

Try This
DraghanC said:
The guide that you posted is showing only for sprint LG Optimus G and not for a LG Optimus G Pro. Do you think you can do a step-by-step guide for people like myself who has the missing IMEI number issue?
Click to expand...
Click to collapse
The Optimus G EFS is compatible with G Pro, i know because it worked for me. Remember i have a F240L.
Remember the file is Zeroed out so you will fill it with data from your current phone through DFS CDMA TOOL.
As for a guide i can't make it anymore clear, because that's how i did it. To restore my IMEI after getting my EFS corrupted.
But I'll try. Here is what i did.
Step 1: I connected my phone to DFS CDMA TOOL and wrote down all the information displayed on the page that shows IMEI and various other data (sorry for not being specific don't have the software installed on my computer anymore.)
Step 2: I rebooted in recovery and flashed the Zeroed out EFS from the guide based on the Optimus G here.
Step 3: I opened the DFS CDMA TOOL program and copied all the info i had previously wrote down on paper back to the phone in the order i had fond it.
Step 4: Here is where it gets tricky because I don't kno if you can skip this step and go to the next, but i'll throw it in anyway as this is how I did it.
I downloaded the TOT+DLL (F240LAT-V10K) for my phone from here I flashed it to my phone but the signal never got restored.
Step 5: I then downloaded the KDZ with a newer F240L10Z and flashed using LG FlashTools after rebooting my signal was back.
I don't know if you can flash the KDZ directly bypassing Step4 because this is not something i would want to repeat for the sake of simplifying the guide.
But give that a go it may work.
All i can say is good luck in trying.
I can assist where i can.
Remember if it does work to BACKUP YOUR EFS to avoid future issues.

mudu8 said:
The Optimus G EFS is compatible with G Pro, i know because it worked for me. Remember i have a F240L.
Remember the file is Zeroed out so you will fill it with data from your current phone through DFS CDMA TOOL.
As for a guide i can't make it anymore clear, because that's how i did it. To restore my IMEI after getting my EFS corrupted.
But I'll try. Here is what i did.
Step 1: I connected my phone to DFS CDMA TOOL and wrote down all the information displayed on the page that shows IMEI and various other data (sorry for not being specific don't have the software installed on my computer anymore.)
Step 2: I rebooted in recovery and flashed the Zeroed out EFS from the guide based on the Optimus G here.
Step 3: I opened the DFS CDMA TOOL program and copied all the info i had previously wrote down on paper back to the phone in the order i had fond it.
Step 4: Here is where it gets tricky because I don't kno if you can skip this step and go to the next, but i'll throw it in anyway as this is how I did it.
I downloaded the TOT+DLL (F240LAT-V10K) for my phone from here I flashed it to my phone but the signal never got restored.
Step 5: I then downloaded the KDZ with a newer F240L10Z and flashed using LG FlashTools after rebooting my signal was back.
I don't know if you can flash the KDZ directly bypassing Step4 because this is not something i would want to repeat for the sake of simplifying the guide.
But give that a go it may work.
All i can say is good luck in trying.
I can assist where i can.
Remember if it does work to BACKUP YOUR EFS to avoid future issues.
Click to expand...
Click to collapse
All right thank you for the instructions. I will give it a try and hopefully I can get my LG Optimus G Pro working again.

mudu8 said:
The Optimus G EFS is compatible with G Pro, i know because it worked for me. Remember i have a F240L.
Remember the file is Zeroed out so you will fill it with data from your current phone through DFS CDMA TOOL.
As for a guide i can't make it anymore clear, because that's how i did it. To restore my IMEI after getting my EFS corrupted.
But I'll try. Here is what i did.
Step 1: I connected my phone to DFS CDMA TOOL and wrote down all the information displayed on the page that shows IMEI and various other data (sorry for not being specific don't have the software installed on my computer anymore.)
Step 2: I rebooted in recovery and flashed the Zeroed out EFS from the guide based on the Optimus G here.
Step 3: I opened the DFS CDMA TOOL program and copied all the info i had previously wrote down on paper back to the phone in the order i had fond it.
Step 4: Here is where it gets tricky because I don't kno if you can skip this step and go to the next, but i'll throw it in anyway as this is how I did it.
I downloaded the TOT+DLL (F240LAT-V10K) for my phone from here I flashed it to my phone but the signal never got restored.
Step 5: I then downloaded the KDZ with a newer F240L10Z and flashed using LG FlashTools after rebooting my signal was back.
I don't know if you can flash the KDZ directly bypassing Step4 because this is not something i would want to repeat for the sake of simplifying the guide.
But give that a go it may work.
All i can say is good luck in trying.
I can assist where i can.
Remember if it does work to BACKUP YOUR EFS to avoid future issues.
Click to expand...
Click to collapse
which version of the CFS CDMATOOLS did you use? I downloaded the demo version of it, and when I connect my Optimus G Pro on to my computer, it doesn't show any information about my phone. Do you think I should buy the paid version of it?

DraghanC said:
which version of the CFS CDMATOOLS did you use? I downloaded the demo version of it, and when I connect my Optimus G Pro on to my computer, it doesn't show any information about my phone. Do you think I should buy the paid version of it?
Click to expand...
Click to collapse
I used this one Setup DFS 13.9.29.0.exe
To enable it to work change the USB MODE of the phone to LG SOFTWARE.
In DFS CDMATOOL make sure you choose the port USB ANDROIDNET SERIAL FOR DIAGNOSTICS PORT (not sure of spelling)
Then you should see your phone info show up on CDMATOOL.

mudu8 said:
I used this one Setup DFS 13.9.29.0.exe
To enable it to work change the USB MODE of the phone to LG SOFTWARE.
In DFS CDMATOOL make sure you choose the port USB ANDROIDNET SERIAL FOR DIAGNOSTICS PORT (not sure of spelling)
Then you should see your phone info show up on CDMATOOL.
Click to expand...
Click to collapse
I did every step as instructed on your instruction and on CDMA TOOL all I see is flashing red colors of BPSR ... NA ... BPSR ...NA ... so it leaves me to believe that my LG OPTIMUS G PRO is beyond being fixable. Perhaps best thing for me to do now is just send it in to AT&T and pay for them to fix it. Thanks for your help.

DraghanC said:
I did every step as instructed on your instruction and on CDMA TOOL all I see is flashing red colors of BPSR ... NA ... BPSR ...NA ... so it leaves me to believe that my LG OPTIMUS G PRO is beyond being fixable. Perhaps best thing for me to do now is just send it in to AT&T and pay for them to fix it. Thanks for your help.
Click to expand...
Click to collapse
Mine too was red.
Just open the tab called PROGRAMMING and then GENERAL(which is the default) tab.
Click the READ button on each box.
The info you get write it down on a paper in the order you will remember.
Load up the ZEROED EFS on the Phone and copy the info you had on paper back the way it was before.
Then FLASH the phone as per the guide.
That should work.

E980 IMEI null
How did you get daig mode enabled on the phone? I don't get to see any connected ports in DFS when I select the USB connection in "charge only" mode.
thanks,

E980 PC can't see ports
I just can't connect my E980 with DFS. The diag port (COM4) doesn't show up unless I select "PC software" USB connection mode. With every other USB connection type, PC fails to see the phone ports (serial/diag/modem).
What am I doing wrong here? I factory reset the phone and just set only USB diag mode under developer settings. However ADB shell works fine with USB mode set to "charge only".
Thanks

koyickal said:
I just can't connect my E980 with DFS. The diag port (COM4) doesn't show up unless I select "PC software" USB connection mode. With every other USB connection type, PC fails to see the phone ports (serial/diag/modem).
What am I doing wrong here? I factory reset the phone and just set only USB diag mode under developer settings. However ADB shell works fine with USB mode set to "charge only".
Thanks
Click to expand...
Click to collapse
yes you are doing it right. PC software is the correct mode to use.

[Q] imei 0

Hey guys I bought my sg3 about 3 months ago from a friend who had cynogen mod on the phone and it worked fine but I had cynogen mod on auto update and now my imei shows as 0 via *#06# and I cant call or text etc. Unfortunately I do not have a backup from when the imei worked because I didnt expect it to do this. So far Ive removed cynogen mod and reset it to stock firmware but im having the same issue any suggestions?
Its the SGH1747 version

dolee said:
Hey guys I bought my sg3 about 3 months ago from a friend who had cynogen mod on the phone and it worked fine but I had cynogen mod on auto update and now my imei shows as 0 via *#06# and I cant call or text etc. Unfortunately I do not have a backup from when the imei worked because I didnt expect it to do this. So far Ive removed cynogen mod and reset it to stock firmware but im having the same issue any suggestions?
Its the SGH1747 version
Click to expand...
Click to collapse
Your baseband is probably corrupted. You may try reflashing a stock modem/baseband via recovery. I had a similar problem once, although I was on stock ROM, and re-flashing the modem zip worked.
I, however, tread very carefully here as I am aware the forum is wary about discussions relating to IMEI.

Larry2999 said:
Your baseband is probably corrupted. You may try reflashing a stock modem/baseband via recovery. I had a similar problem once, although I was on stock ROM, and re-flashing the modem zip worked.
I, however, tread very carefully here as I am aware the forum is wary about discussions relating to IMEI.
Click to expand...
Click to collapse
yeah im not trying to change it which isnt allowed just tryin to figure out how to do what you said could you list me some steps or link me how to do this?

dolee said:
yeah im not trying to change it which isnt allowed just tryin to figure out how to do what you said could you list me some steps or link me how to do this?
Click to expand...
Click to collapse
Don't know if you're willing to pay to have this repaired but here's a site that does it. I've done stuff with them before. Very good service.
(no, I don't work for them - just a happy customer.)
http://mobiletechvideos.mybigcommerce.com/samsung-galaxy-s-iii-imei-efs-repair/

dolee said:
Hey guys I bought my sg3 about 3 months ago from a friend who had cynogen mod on the phone and it worked fine but I had cynogen mod on auto update and now my imei shows as 0 via *#06# and I cant call or text etc. Unfortunately I do not have a backup from when the imei worked because I didnt expect it to do this. So far Ive removed cynogen mod and reset it to stock firmware but im having the same issue any suggestions?
Its the SGH1747 version
Click to expand...
Click to collapse
You can look up peoplearmy's method (google it). You will not find help on how to fix IMEI on XDA. I had my IMEI wiped out a while back after flashing a bad rom. I had to get it put back, and then had to get LTE back.
Good luck.

dolee said:
yeah im not trying to change it which isnt allowed just tryin to figure out how to do what you said could you list me some steps or link me how to do this?
Click to expand...
Click to collapse
Can you go to Settings => About Device and see what you have under Baseband version? Whilst you are there, also check what Android version it says and the build number.

Larry2999 said:
Can you go to Settings => About Device and see what you have under Baseband version? Whilst you are there, also check what Android version it says and the build number.
Click to expand...
Click to collapse
android 4.3 base band 1747MVLUEMK5 build # JSS15J.1747MVLUEMK5

dolee said:
android 4.3 base band 1747MVLUEMK5 build # JSS15J.1747MVLUEMK5
Click to expand...
Click to collapse
Everything looks OK as your baseband version would likely read 'unknown' if it's bad. You may, however, still try re-flashing the modem via the method posted in the attached thread ... Please proceed at your own peril as I offer no guarantee that this will work or will not result in damaged phones,
http://forum.xda-developers.com/showthread.php?t=1831898
Please note you will need custom recovery (e.g. CWM or TWRP). You will find instructions for installing custom recovery at the bottom of the thread. If this doesn't work, then you may try doing a hard wipe from recovery and reinstalling everything including system ROM, modem and kernel.
Hope it works out for you.

Simple fix is to reinject imei which located behind the battery.. But sometimes for some reason if you do this, you'll stuck with edge network, can be fix though but you gotta go back to stock in order to do so
Sent from my SAMSUNG-SGH-I747 using Tapatalk

LARMYV said:
You can look up peoplearmy's method (google it). You will not find help on how to fix IMEI on XDA. I had my IMEI wiped out a while back after flashing a bad rom. I had to get it put back, and then had to get LTE back.
Good luck.
Click to expand...
Click to collapse
I'm in the same boat as you once were. I lost my imei and had to inject it back, now I have no LTE service anywhere.. It says LTE but no internet connection. Any help? Sorry if I threadjacked here but I've been dealing with this for a year now and I really need a solution...

karmasblade said:
I'm in the same boat as you once were. I lost my imei and had to inject it back, now I have no LTE service anywhere.. It says LTE but no internet connection. Any help? Sorry if I threadjacked here but I've been dealing with this for a year now and I really need a solution...
Click to expand...
Click to collapse
you will have to google peoplearmy imei lte and find the tutorial on how to restore imei and get LTE back.
You will not be able to find the thread on XDA because XDA deleted it sometime ago. I was like you and lost my imei. Once I re-injected it using a tutorial on XDA, I was stuck on edge. Then I finally found peoplearmy's tutorial, downloaded the programs and followed the steps to get LTE back. I got it back and haven't lost it since.

LARMYV said:
you will have to google peoplearmy imei lte and find the tutorial on how to restore imei and get LTE back.
You will not be able to find the thread on XDA because XDA deleted it sometime ago. I was like you and lost my imei. Once I re-injected it using a tutorial on XDA, I was stuck on edge. Then I finally found peoplearmy's tutorial, downloaded the programs and followed the steps to get LTE back. I got it back and haven't lost it since.
Click to expand...
Click to collapse
I can't find the link, can you PM me it?

I had that happen to me with a 0 on my phone and was able to get it back I had no backup either what I did is go on the NV Data restore or NV writer thread and downloaded the NV writer and put myself back on stock ...I went thru a few pages in the post and someone had a file where you could put your IMEI into that file maybe it was set up thru notepad but you could fill in the zeros with your IMEI and name it I think a txt.file after then open the NV writer and instead of backing it up cause you can't just restore that file where you fill in you're IMEI and it went right back into my phone. There also a video on that page how to do it. You just need basically that file to put your IMEI back in. I might still have it if not keep going thru the post took find it. There a picture of what it looks like to restore if you list it but every time I tried to open that link to restore it wouldn't let me. Hope it wasn't to confusing but it's basically a white box with a bunch of zeros and replace the zeros with your IMEI and save it as atxt. File I believe and just restore it as shown in the video for backing it up but just restore instead it does work cause I didn't have an IMEI on my phone it just had a zero
---------- Post added at 10:53 PM ---------- Previous post was at 10:48 PM ----------
http:// http://forum.xda-developers.com/showthread.php?t=1804117

NV writer
heres the NV txt file to write your IM?EI back to the phone.extract the zip.

britt21 said:
heres the NV txt file to write your IM?EI back to the phone.extract the zip.
Click to expand...
Click to collapse
could you link the video or the thread with the video?
instructions werent so clear

dolee said:
could you link the video or the thread with the video?
instructions werent so clear
Click to expand...
Click to collapse
I believe this is it. http://forum.xda-developers.com/showthread.php?t=1804117

karmasblade said:
I believe this is it. http://forum.xda-developers.com/showthread.php?t=1804117
Click to expand...
Click to collapse
?
I got a message saying failed phone did not answer when writing any ideas

Problem with upgrading to 6.0

Hi guys
Recently i bought my girlfriend LG G4. Now I think it's from Singapore, and I totally have no idea, how to update it. I have 5.1 now, and of course I wanna 6.0. Using automatic option from smartphone still showing "up to date". LG bridge is finding some firmware, but after downloading, at 1% i got error. LG UP always saying, that's bad kdz file ( I download 4-5 of them). When i'm trying to check version by IMEI on devtester, I get nothing. I have no clue what could i do next .
imeipro.info/report.html?token=cae9ce52b6c7405da35d3d01e2cbe86b[/url]

Liian said:
Hi guys
Recently i bought my girlfriend LG G4. Now I think it's from Singapore, and I totally have no idea, how to update it. I have 5.1 now, and of course I wanna 6.0. Using automatic option from smartphone still showing "up to date". LG bridge is finding some firmware, but after downloading, at 1% i got error. LG UP always saying, that's bad kdz file ( I download 4-5 of them). When i'm trying to check version by IMEI on devtester, I get nothing. I have no clue what could i do next .
imeipro.info/report.html?token=cae9ce52b6c7405da35d3d01e2cbe86b[/url]
Click to expand...
Click to collapse
Go into Settings > About Phone > Software Version - at the bottom of the tab click on 'Software Version'. It should give you a version with 10(?) in it (last few numbers in the string). Find one with the same string with 20(?) for the same carrier. Use LGUP-NEW (https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803) and click upgrade to set the 20(?) kdz file you found, then proceed to upgrade it.
Good Luck.

sdembiske said:
Go into Settings > About Phone > Software Version - at the bottom of the tab click on 'Software Version'. It should give you a version with 10(?) in it (last few numbers in the string). Find one with the same string with 20(?) for the same carrier. Use LGUP-NEW (https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803) and click upgrade to set the 20(?) kdz file you found, then proceed to upgrade it.
Good Luck.
Click to expand...
Click to collapse
Well, I have h815 10b, so i download 20b, and still from lg up, lg bridge, to lg flash tool (which i think have right to not work with marshmallow) I always have an error.
like this:
http://imgur.com/a/GCJMg
Still, thanks for advice .

Liian said:
Well, I have h815 10b, so i download 20b, and still from lg up, lg bridge, to lg flash tool (which i think have right to not work with marshmallow) I always have an error.
like this:
http://imgur.com/a/GCJMg
Still, thanks for advice .
Click to expand...
Click to collapse
First - check the LGUP-NEW thread to see if others have posted similar problems and gotten any answers. If you don't find anything, post the issue there.
My suspicion is a carrier difference from the original but ...

sdembiske said:
First - check the LGUP-NEW thread to see if others have posted similar problems and gotten any answers. If you don't find anything, post the issue there.
My suspicion is a carrier difference from the original but ...
Click to expand...
Click to collapse
Okay, I'll check. Tell me only, because I'm not a native speaker in english, what do you mean by "carrier" in this context? And thank you for your interest - I was searching help in the biggest android forum in my country, and nobody was enough kind to respond .
Anyway, this is worst present I ever made to someone . First of all i was waiting 2 months for package, second problem with battery in theoretically brand new phone and now this soft issue. Well, I'll stay with Samsung s8 for myself than g6 .

Liian said:
Okay, I'll check. Tell me only, because I'm not a native speaker in english, what do you mean by "carrier" in this context? And thank you for your interest - I was searching help in the biggest android forum in my country, and nobody was enough kind to respond .
Anyway, this is worst present I ever made to someone . First of all i was waiting 2 months for package, second problem with battery in theoretically brand new phone and now this soft issue. Well, I'll stay with Samsung s8 for myself than g6 .
Click to expand...
Click to collapse
By carrier, I mean the wireless company that provides the phone/texting services to your phone ... if the phone wasn't bought from the original services company.
If it was, the other option might be to try a factory data reset to see if it allows the update to 6.0 to come through automatically - you will have to back all your data first, otherwise you will lose it.
PS: Don't forget to click the Thanks button ...

Well, I bough it from auction so it shouldn't be branded phone, but when i google it, i find information - buyer "EE". Quick look - provider from Great Britain? http://imeipro.info/report.html?token=cae9ce52b6c7405da35d3d01e2cbe86b

Liian said:
Well, I bough it from auction so it shouldn't be branded phone, but when i google it, i find information - buyer "EE". Quick look - provider from Great Britain? http://imeipro.info/report.html?token=cae9ce52b6c7405da35d3d01e2cbe86b
Click to expand...
Click to collapse
Refer to this link and see if the info provided helps solve your invalid kdz issue:
Link: https://www.mylgphones.com/how-to-solvefix-the-kdz-file-is-invalid-issue.html

sdembiske said:
go into settings > about phone > software version - at the bottom of the tab click on 'software version'. It should give you a version with 10(?) in it (last few numbers in the string). Find one with the same string with 20(?) for the same carrier. Use lgup-new (https://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803) and click upgrade to set the 20(?) kdz file you found, then proceed to upgrade it.
Good luck.
Click to expand...
Click to collapse
Why can't he use LG Flash Tool instead of LG UP ? It's more readily available.
---------- Post added at 11:52 AM ---------- Previous post was at 11:47 AM ----------
---------- Post added at 11:55 AM ---------- Previous post was at 11:52 AM ----------
sdembiske said:
By carrier, I mean the wireless company that provides the phone/texting services to your phone ... if the phone wasn't bought from the original services company.
If it was, the other option might be to try a factory data reset to see if it allows the update to 6.0 to come through automatically - you will have to back all your data first, otherwise you will lose it.
PS: Don't forget to click the Thanks button ...
Click to expand...
Click to collapse
Tell him to flash the H815 European firmware... it will not do any damage because the OS has the same signature across all variants, so the bootloader will accept.

sdembiske said:
Refer to this link and see if the info provided helps solve your invalid kdz issue:
Link: https://www.mylgphones.com/how-to-solvefix-the-kdz-file-is-invalid-issue.html
Click to expand...
Click to collapse
Thanks, I'll check it today evening. Hope it will work
BIG_BADASS said:
Why can't he use LG Flash Tool instead of LG UP ? It's more readily available.
---------- Post added at 11:52 AM ---------- Previous post was at 11:47 AM ----------
Also keep in mind, if you upgrade from 5.1... you can no longer root the device...
---------- Post added at 11:55 AM ---------- Previous post was at 11:52 AM ----------
Tell him to flash the H815 European firmware... it will not do any damage because the OS has the same signature across all variants, so the bootloader will accept.
Click to expand...
Click to collapse
Read somewhere that LG flash tool working only with 5.1, not 6.0. About version - except 20b, i have also european so if first will work, i'll next . I know that i can't root phone with 6.0 but first of all - it's for my girlfriend and i think, that she don't care. Second - with quite long history with android, i never rooted any of them. I never saw a reason and also i'm bit scared when we're talking about more complicated actions . Anyway, thanks for advice. We will in next 5 hours if i finally get 6.0 on this phone

Liian said:
Thanks, I'll check it today evening. Hope it will work
Read somewhere that LG flash tool working only with 5.1, not 6.0. About version - except 20b, i have also european so if first will work, i'll next . I know that i can't root phone with 6.0 but first of all - it's for my girlfriend and i think, that she don't care. Second - with quite long history with android, i never rooted any of them. I never saw a reason and also i'm bit scared when we're talking about more complicated actions . Anyway, thanks for advice. We will in next 5 hours if i finally get 6.0 on this phone
Click to expand...
Click to collapse
I recommend you root the device, then unlock the bootloader.
---------- Post added at 12:12 PM ---------- Previous post was at 12:10 PM ----------
Liian said:
Thanks, I'll check it today evening. Hope it will work
Read somewhere that LG flash tool working only with 5.1, not 6.0. About version - except 20b, i have also european so if first will work, i'll next . I know that i can't root phone with 6.0 but first of all - it's for my girlfriend and i think, that she don't care. Second - with quite long history with android, i never rooted any of them. I never saw a reason and also i'm bit scared when we're talking about more complicated actions . Anyway, thanks for advice. We will in next 5 hours if i finally get 6.0 on this phone
Click to expand...
Click to collapse
You're lucky you have the European version.. you have no idea how much hassle I went through to get that version...
So anyways, since your bootloader is unlockable, I recommend you unlock it first, prior to flashing anything mentioned by sdembiske.
I recommend you also root the phone and install TWRP, just incase something goes wrong while flashing, you can easily recover the phone, and not have it completely destroyed.
Once you have rooted, unlocked bootloader, and installed TWRP, you can safely do literally anything on the phone
Flashing the rom can easily make your 700USD device worth 0, within seconds... so Please .... take the precautions.... and install TWRP
Cheers
---------- Post added at 12:23 PM ---------- Previous post was at 12:12 PM ----------
Even some of the LG G4 variants with locked bootloaders are rootable...... your variant is DEFINITELY rootable

Liian said:
Thanks, I'll check it today evening. Hope it will work
Read somewhere that LG flash tool working only with 5.1, not 6.0. About version - except 20b, i have also european so if first will work, i'll next . I know that i can't root phone with 6.0 but first of all - it's for my girlfriend and i think, that she don't care. Second - with quite long history with android, i never rooted any of them. I never saw a reason and also i'm bit scared when we're talking about more complicated actions . Anyway, thanks for advice. We will in next 5 hours if i finally get 6.0 on this phone
Click to expand...
Click to collapse
LG Flash Tool has many more bricking issues than LGUP-NEW. If you ever decide you want to roll-back to 5.1, LGUP-NEW will throw up a roll-back version error if one is present - LG Flash Tool will not and will result in a bricked phone. Overall, your best and safest bet is to use LGUP-NEW.
One note: There are fraudulent sellers of supposed H815's out there and as you bought yours through auction there are no guarantees. To be on the safe side I would check with the seller to see if you can ascertain if he was the original owner and ask where the phone was purchased (what country) and who the original carrier was.

Well it didn't work. Anyway in download mode it show mi LG F500k. It's mean sth or it's normal name for g4

Liian said:
Well it didn't work. Anyway in download mode it show mi LG F500k. It's mean sth or it's normal name for g4
Click to expand...
Click to collapse
G4 F500k is the Korean version, isn't it??
https://forum.xda-developers.com/g4/help/korean-g4-f500k-t3150548
Before you do anything, be 100% sure what variant you have. To do so, please enter the following codes in the phone's dial pad:
*#546368#*815#
*#546368#*500#
If the first one works, you have the H815, if the second one works, you have the F500K ...
Report your findings,,,

Liian said:
Well it didn't work. Anyway in download mode it show mi LG F500k. It's mean sth or it's normal name for g4
Click to expand...
Click to collapse
Power down the phone, pull off the back cover and take out the battery. There should be a white tag under it - make a note of all the letters and numbers there. Provided the tag hasn't been tampered with, it should provide a good idea of what model you have and help narrow down your search for a kdz/tot that will work. I would still check with the seller of the phone and seek some verification. If the auction site is reputable, you may have some recourse if the phone is not as it was sold as.

sdembiske said:
Power down the phone, pull off the back cover and take out the battery. There should be a white tag under it - make a note of all the letters and numbers there. Provided the tag hasn't been tampered with, it should provide a good idea of what model you have and help narrow down your search for a kdz/tot that will work. I would still check with the seller of the phone and seek some verification. If the auction site is reputable, you may have some recourse if the phone is not as it was sold as.
Click to expand...
Click to collapse
The physical label is easier to tamper with, than the actual software. Just go by my suggestion.. the MMI codes.

Liian said:
Well it didn't work. Anyway in download mode it show mi LG F500k. It's mean sth or it's normal name for g4
Click to expand...
Click to collapse
The member providing you with the codes to access the hidden menu seems to have forgotten that not all codes work for the same models (as he himself found out when he tried once before) - there are carrier firmware variations with locks imposed on being able to access some. IMEI's can be changed by 'snakeheads, pimps' ... and fraudulent sellers.
Frankly, you are lucky you haven't bricked your phone completely by flashing different model/carrier variants and if you had used the LG Flash Tool to install the H815 kdz variant he recommended, you most likely would have. The same member has, for a fact, provided misleading, misinformed and potentially very harmful advice to other less informed members.

Frankly, you are lucky you haven't bricked your phone completely by flashing different model/carrier variants and if you had used the LG Flash Tool to install the H815 kdz variant he recommended, you most likely would have.
Click to expand...
Click to collapse
What do you mean "if you had used the LG Flash Tool to install the H815 kdz variant he recommended, YOU MOST LIKELY WOULD HAVE" ??
How do you know for sure?? Have you tried it??? NO you havn't tried it, so you have no right to say "it would most likely brick it".
---------- Post added at 05:30 AM ---------- Previous post was at 05:17 AM ----------
Liian said:
Well it didn't work. Anyway in download mode it show mi LG F500k. It's mean sth or it's normal name for g4
Click to expand...
Click to collapse
Hey buddy, let's check whether your bootloader is unlockable before you do anything. Please download ADB (Android Debug Bridge)
Before we do anything, make sure "Enable OEM Unlock" and "USB Debugging" options are enabled.
Once you install ADB, open Command Prompt (Press Windows Key + R , then type 'cmd' and press Enter key)
Issue the following commands:
Code:
cd C:\adb
Code:
adb start-server
Code:
adb devices
At this point, your device should show up under the list of devices. If it doesn't issue the following commands to restart the ADB server:
Code:
adb kill-server
Code:
adb start-server
Then, check again whether the device is being detected
Code:
adb devices
If the device is not showing, please check whether drivers are properly installed
If the device is being shown, you can proceed to the following command:
Code:
adb reboot-bootloader
If the device just boots back to Android, then the bootloader is locked, and you could have any device aside from the H811 or H815 European version
If it boots into the bootloader, then you have either the H811 or the H815 European version, and you should be able to easily root, install TWRP and flash any variants kdz file.
Now, if you have got this far without booting back to Android, time to unlock bootloader:
Code:
fastboot oem unlock
Once complete, issue:
Code:
fastboot getvar unlock
If you get the message "Unlock: Yes", then you have successfully unlocked bootloader.
Hope this helps

sdembiske said:
the member providing you with the codes to access the hidden menu seems to have forgotten that not all codes work for the same models (as he himself found out when he tried once before) - there are carrier firmware variations with locks imposed on being able to access some. Imei's can be changed by 'snakeheads, pimps' ... And fraudulent sellers.
Frankly, you are lucky you haven't bricked your phone completely by flashing different model/carrier variants and if you had used the lg flash tool to install the h815 kdz variant he recommended, you most likely would have. The same member has, for a fact, provided misleading, misinformed and potentially very harmful advice to other less informed members.
Click to expand...
Click to collapse
let him try the codes first ok...
If it doesn't work, then you complain... Otherwise you be quiet
You have no right to talk on his behalf and tell what works and what doesnt ok... let him try and see