Develop Bugs

[Q] How to unroot LG Optimus G (E975)???

How to unroot LG Optimus G (E975) Vietnamese version (JB 4.1.2 stock, rooted)??
Help me, plz! thks

Supersu/setting/Full unroot. ok

install the KDZ for your phone

Sv: [Q] How to unroot LG Optimus G (E975)???
Maybe Im new but why do you want to unroot? I dont get that
Sent from my LG-E975 using xda app-developers app

Maybe he wants to send phone to warranty?
Sent from my LG-E975 using Tapatalk 2

just instal back original update software by LG mobile support tool

thanks all
i knew this app from google play "OTA KEEPER", it can unroot and backs up root file easily. But i don't try it!
Anyone has experience on this app??????/:laugh:

Easiest way for unroot is with SuperSU from chainfire.
Just install the app,go to settings and choose unroot.your device will reboot and will be clean.

skdubg said:
install the KDZ for your phone
Click to expand...
Click to collapse
where to get those kdz files...

krk2krk said:
where to get those kdz files...
Click to expand...
Click to collapse
LG site
http://www.lg.com/vn/dien-thoai-di-dong/lg-Optimus-G

d.terenzzo said:
LG site
http://www.lg.com/vn/dien-thoai-di-dong/lg-Optimus-G
Click to expand...
Click to collapse
no one can read this!!
KDZ are here:
http://lg-phone-firmware.com/index.php?id_mod=20

The OP can, if you don't, so sorry!
Sent from my LG-E971 using xda app-developers app

so does this unroot resets everything?, even the recovery and locks the bootloader?

yes it does

skdubg said:
yes it does
Click to expand...
Click to collapse
thanks be unto you wise one...

Hi does this work with Optimus G Pro? thanx in advance

How can i unroot my E975, stand cwm v6.0.4.7, and it don't turned up, only i can go into recovery mod or download mod. I try to put kdz, but this do nothing at all. My phone only set to the charge on usb and flashtool do nothing...

sayonara90 said:
How can i unroot my E975, stand cwm v6.0.4.7, and it don't turned up, only i can go into recovery mod or download mod. I try to put kdz, but this do nothing at all. My phone only set to the charge on usb and flashtool do nothing...
Click to expand...
Click to collapse
Go here:http://forum.xda-developers.com/showthread.php?t=2010624

LG F180K KDZ [extract file error]

Hello,
I've got trouble with my F180K to back to stock rom. I tried already with KDZ updater. And it is my trouble. When it is unpacking kdz, after that it writes:
19:25:16 Unpacking KDZ
19:25:42 KDZ file extracted
19:25:43 Extract file error
And i dont know what to do with it. I'm doing all strictly to instructions How to unbrick LG Optimus G.
I downloaded and installed usb modem. Phone in download mode.
Kdz software updater in 3GQCT and phone mode is CS_EMERGENCY.
Please help.

BartxGamer said:
Hello,
I've got trouble with my F180K to back to stock rom. I tried already with KDZ updater. And it is my trouble. When it is unpacking kdz, after that it writes:
19:25:16 Unpacking KDZ
19:25:42 KDZ file extracted
19:25:43 Extract file error
And i dont know what to do with it. I'm doing all strictly to instructions How to unbrick LG Optimus G.
I downloaded and installed usb modem. Phone in download mode.
Kdz software updater in 3GQCT and phone mode is CS_EMERGENCY.
Please help.
Click to expand...
Click to collapse
If the kdz file is bigger than 1GB it doesn't work. There are a lot of posts about this.

very good information.
My new rom is bigger than 1Go (E97510F)
So how make to flash it ?
Thanks

problem than
So there arent any program which will flash up 1Gb kdz...horrible!!! All new phones has rom up 1Gb... What to do now?

Help
People help.
Now when i connect to PC. It show red LED and its all. Black screen. I was trying to repair in recovery mode. When i disconnect usb all turns down.
Help.!!!!

Nevermind. This topic is goin to be closed. Please admin close this thread because we cant find any idea to solve this problem.
Thanks for help.
Sent from my LG-E975 using xda app-developers app

BartxGamer said:
Nevermind. This topic is goin to be closed. Please admin close this thread because we cant find any idea to solve this problem.
Thanks for help.
Sent from my LG-E975 using xda app-developers app
Click to expand...
Click to collapse
Today I found this picture from an other LG Mobile Support tool then I have.
Here you can read that it chack for 2G-4G big KDZ files. Maybe thats the different.
I haven't found the tool yet, but maybe.

antoniejanssen said:
Today I found this picture from an other LG Mobile Support tool then I have.
Here you can read that it chack for 2G-4G big KDZ files. Maybe thats the different.
I haven't found the tool yet, but maybe.
Click to expand...
Click to collapse
Wow, it is a really big step to future. You have to find now this tool i can see this topic is going on. Thanks for help!
Sent from my LG Optimus G F180K using xda-developers app

with "LG mobile support tool" You could go back to stock ROM many months ago and You can do it now . Why You didn't use "search" since first post in this topic?

Ganz.Conrad said:
with "LG mobile support tool" You could go back to stock ROM many months ago and You can do it now . Why You didn't use "search" since first post in this topic?
Click to expand...
Click to collapse
I cant go back with Lg mobile support tool. I m not that noob to didnt try anything what i found...i tried it already, i tried Lg kdz updater, i tried LG another tool.
Sent from my LG Optimus G F180K using xda-developers app

You can't use lg mobile tool when you are on custom rom. The phone will be detected,but when you will choose to flash stock it will give you an error.
The only way is kdz updater.
Sent from LG E975 pwd by CarbonRom

kimitza said:
You can't use lg mobile tool when you are on custom rom. The phone will be detected,but when you will choose to flash stock it will give you an error.
The only way is kdz updater.
Sent from LG E975 pwd by CarbonRom
Click to expand...
Click to collapse
Okay, first tell me how to use it to make it SUCCESSFULL. I dont want to get KDZ "extract file error" again. Write and post full instruction to make it successfull. With all details. Thanks
Sent from my LG Optimus G F180K using xda-developers app

If that .kdz file is bigger than 1gb, kdz updater will not work. Simply as that.
After searching around,i found there is a way to bypass official LG mobile support tool checks.
It's a litle more complicated,as you need to install small server and you have to edit hosts file in windows, but it will do the trick. You need to do this in order to make the app thinking it's downloading the rom from lg server.
here is the tutorial
http://forum.xda-developers.com/showthread.php?t=2085344
It's for the L9,but i think it will work F180 too....

kimitza said:
If that .kdz file is bigger than 1gb, kdz updater will not work. Simply as that.
After searching around,i found there is a way to bypass official LG mobile support tool checks.
It's a litle more complicated,as you need to install small server and you have to edit hosts file in windows, but it will do the trick. You need to do this in order to make the app thinking it's downloading the rom from lg server.
here is the tutorial
http://forum.xda-developers.com/showthread.php?t=2085344
It's for the L9,but i think it will work F180 too....
Click to expand...
Click to collapse
it's not working. Even if it's file downloaded earlier with LG Mobile Support tool - it crashes during file extraction. Tried this with previous version of LG MST (this from thread You mentioned). Don't know why - tried only with one *.kdz.
BartxGamer - You can try this, but LG Mobile Support tool will update to new version, and it's hard to say - will it work?
kimitza said:
You can't use lg mobile tool when you are on custom rom. The phone will be detected,but when you will choose to flash stock it will give you an error.
The only way is kdz updater.
Sent from LG E975 pwd by CarbonRom
Click to expand...
Click to collapse
You're wrong. I always go back to stock rom with this. If Phone is recognized with newest firmware, then You have to choose from options "Emergency firmware" and find ROM using IMEI.

there is an "IF" there.You got lucky, not working for everyone .What do you do if the phone is not recognized?

kimitza said:
there is an "IF" there.You got lucky, not working for everyone .What do you do if the phone is not recognized?
Click to expand...
Click to collapse
OR we will wait till official android 4.3 for F180k will be released. Than we should be able to update, i guess.
Yep, IF phone is recognized. But what if not? I tried it twice. And it stopped after checkint battery stats. You could only restart update or exit. And it writes, phone is nit connected.

Its time to refresh this topic. Do you guys have any informations about flashing kdz? About kdz up 1Gb which we cant flash on our LG Optimus G?
Sent from LG Optimus G (F180k)

BartxGamer said:
Its time to refresh this topic. Do you guys have any informations about flashing kdz? About kdz up 1Gb which we cant flash on our LG Optimus G?
Sent from LG Optimus G (F180k)
Click to expand...
Click to collapse
Too many different methods in order To make some specified link, Please look better on forum

BartxGamer said:
Its time to refresh this topic. Do you guys have any informations about flashing kdz? About kdz up 1Gb which we cant flash on our LG Optimus G?
Sent from LG Optimus G (F180k)
Click to expand...
Click to collapse
Have you tried CS_EMERGENCY Phone Mode? Mine worked just now. HTH

hpesojames said:
Have you tried CS_EMERGENCY Phone Mode? Mine worked just now. HTH
Click to expand...
Click to collapse
But did you flash kdz via kdz updater or what programm? Yes i tried with instruction of How to unbrick Optimus G.
Sent from LG Optimus G (F180k)

(Resolved!) Disaster ... No Signal after installing different ROM

My phone is LG Optimus G Pro F240K
I installed E988 (United Arab Emirates) then after that I got a message that my storage is encrypted and I have to supply a password to decrypt it, which I managed to solve by "Hard Reset". The Decrypted storage is solved but my IMEI disappeared and No signal!
I flashed back to my original ROM, F240K10r_00.kdz , using the XQ55 method.
after flashing original ROM, still no signal
Now I am very very upset and in need for urgent help sense there is absolutely no enough resources on the internet.
HLEP... Pleeeeeez:crying::crying::crying:

hellow guys, no one can help me?

I can give you a file to flash I'm not sure if it will work

smaybe said:
I can give you a file to flash I'm not sure if it will work
Click to expand...
Click to collapse
Thanks a lot for your reply...
Please send me the link, and tell me how to flash it,
... but any idea what is happening?

pm sent !
i'm note sure what's happening to you
just flash the file with recovery

smaybe said:
pm sent !
i'm note sure what's happening to you
just flash the file with recovery
Click to expand...
Click to collapse
i opened the link, i get a cloud with moving gears? nothing downloaded?

Still no signal and no IEMI...
I am very upset please help me... Guys...

i found that
http://forum.xda-developers.com/showthread.php?t=2183006&page=3
have you tried that ?
http://forum.xda-developers.com/showpost.php?p=43772519&postcount=3

smaybe said:
i found that
http://forum.xda-developers.com/showthread.php?t=2183006&page=3
have you tried that ?
http://forum.xda-developers.com/showpost.php?p=43772519&postcount=3
Click to expand...
Click to collapse
this is for samsung, LG doesn't have EFS folder.

Guys... don't leave me alone, it is dark here!
Too much money to give up .... Plez help!!!!!!

Help ... help help...

hi.... any news?

I'm not sure what u could do, but hopefully someone who knows what there doing can help u soon.
sent from my OG PRO using tapatalk 4

Haroundb said:
My phone is LG Optimus G Pro F240K
I installed E988 (United Arab Emirates) then after that I got a message that my storage is encrypted and I have to supply a password to decrypt it, which I managed to solve by "Hard Reset". The Decrypted storage is solved but my IMEI disappeared and No signal!
I flashed back to my original ROM, F240K10r_00.kdz , using the XQ55 method.
after flashing original ROM, still no signal
Now I am very very upset and in need for urgent help sense there is absolutely no enough resources on the internet.
HLEP... Pleeeeeez:crying::crying::crying:
Click to expand...
Click to collapse
Hi! The same situation was with the LG Optimus G Pro F240L - after flashing from F240K.
corrected as follows:
1. flash the firmware from LGE980H (TCL / TELCEL (MEXICO))
2. flash the firmware of your phone. radio is turned on

You rolled the dice by flashing a rom For a different model. Not so sure that was a wise move.
Sent from my LG-E980 using xda premium

Why would you do something like this when theres not even a base to flash ... I'm mean really
Sent from my LG-E980 using xda premium

Guys he needs some help not reproaches

Unfortunately there's nothing that can be done unless he has a backup that he can restore. Once you loose the imei it's more than likely gone for good. I lost mine on the e980 twice. First time a backup restoration fixed it. Second time I had to swap the phone. And as for the app for restoring imei, I tested it but it doesn't work with our phones at all.
Edit: you try reinstalling the baseband. As for how you would get it, I know have no clue.
Sent from my LG-E980 using xda app-developers app

and those videos ? nothing interessting ?
http://goo.gl/OInxZw

He hasn't reported if they work for him so I'm assuming they don't work on our phones.
Sent from my LG-E980 using xda app-developers app

Back To Stock

hey all
i have a Lg Optimus G korean version F180s which i have converted to OG E975 (Int) successfully.. everything WAS fine the phone is awesome with so many customized ROMs then i flashed CM 10.2.0 since then i have wifi connectivity issue's ... the signals are grey all the time and weak..
i re flashed my modem image (i created before converted my phone) flashed efs tried different ROMs.. Done hard reset everything .. but still facing the issue.. now my question is can i revert back to STOCK? if yes then which one? KOREAN STOCK for F180s or OPEN EUROPE STOCK which i used to convert my phone before... and what is the procedure a step by step guide will be appreciated
OR
if there's a solution for my problem then plz share because i am happy with custom roms.. and wont be going back to stock.
right now i am using cyanfox 4.4.2
thank you

someone plzzz help:crying:

Yes you can go back to stock any time. You need to flash F180S KDZ. There are many guides of flashing KDZ.

XDA-RK said:
Yes you can go back to stock any time. You need to flash F180S KDZ. There are many guides of flashing KDZ.
Click to expand...
Click to collapse
Can I flash open Europe kdz for e975??
Sent from my LG-E975 using xda app-developers app

Din't you mak nandroid backup?

​
Ahmed Xperia p said:
Din't you mak nandroid backup?
Click to expand...
Click to collapse
nandriod backup :/ naah

hash.86 said:
Can I flash open Europe kdz for e975??
Sent from my LG-E975 using xda app-developers app
Click to expand...
Click to collapse
Yes you can. But you need to flash F180S modem to get working signals. Probably you may also need to restore EFS partitions. Be sure you backed them up.

XDA-RK said:
Yes you can. But you need to flash F180S modem to get working signals. Probably you may also need to restore EFS partitions. Be sure you backed them up.
Click to expand...
Click to collapse
i have my modem back up... and efs backup...
tell me can i flash open europe KDZ?
if not
then the procedure of flashing f180 KDZ becoz wheni try to flash it takes me to LG SUPPORT TOOL instead of asking me about country and language...
thanks

http://forum.xda-developers.com/showthread.php?t=2432476. Use method 1 ....100% working . Good luck let me know .
Sent from my LG-E975 using xda app-developers app

Help!!
only with the LG Support Tool we can make our rom stock recovery?

Sorin90 said:
http://forum.xda-developers.com/showthread.php?t=2432476. Use method 1 ....100% working . Good luck let me know .
Sent from my LG-E975 using xda app-developers app
Click to expand...
Click to collapse
did everything and it still takes me lg mobile update tool...

[Q] Software Update for Rooted LG G3

I have the D855 international, with v10f. It's rooted with PurpleDrake Lite. The phone has just downloaded a software update, which I have NOT installed. Can I install it? If I do install it:
- will I need to root again?
- will anything else be affected?

capriciousmike said:
I have the D855 international, with v10f. It's rooted with PurpleDrake Lite. The phone has just downloaded a software update, which I have NOT installed. Can I install it? If I do install it:
- will I need to root again?
- will anything else be affected?
Click to expand...
Click to collapse
If you run the software update it will either work (and root will be maintained) or it will fail with a message that your phone is suspected of being rooted and boot back up unchanged. If it fails then you need to unroot first by flashing a KDZ of the version you are using in Normal Flash mode to retain your data/apps

dex. said:
If you run the software update it will either work (and root will be maintained) or it will fail with a message that your phone is suspected of being rooted and boot back up unchanged.
Click to expand...
Click to collapse
It worked. Root maintained. Software version v10j.

i have f400 k i face the same problem i can not upgrade my frimware because of rooting my device so what should i do

snipeerz said:
i have f400 k i face the same problem i can not upgrade my frimware because of rooting my device so what should i do
Click to expand...
Click to collapse
Like the guy said a couple posts up.... Flash KDZ of whatever firmware you're currently on in Normal Mode.
Then try again[emoji16]
- Tapatalked from the G3

Can you explain it to me plz cause im nob
Sent from my LG-F400K using XDA Premium 4 mobile app

snipeerz said:
Can you explain it to me plz cause im nob
Sent from my LG-F400K using XDA Premium 4 mobile app
Click to expand...
Click to collapse
You can try this method first to lose root and update your device:
http://forum.xda-developers.com/showthread.php?t=2797190
If not, you can also follow this guide to flash your current .kdz file again and lose root like that.
http://forum.xda-developers.com/showthread.php?t=2802286
If you want to find your current .kdz file, you can use this link:
http://csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=IMEI HERE
You have to put in your IMEI after the "=". That will take you to a page with some info. Use the link next to "<sw_url>", copy it and that will start the download of your latest rom (in form of a .kdz file).
(Not sure if I pasted the links in the correct order, but the first one should be regarding the use of LG PC Suite and the second one about flashing .kdz files)
Sent from my LG-D855