[Q] Need help with LG Optimus G F-180 unrooting process. - LG Optimus G (International)

I will try to make my question as simple as i can.
I bought a used LG Optimus G F-180 yesterday. Its rooted with a custom ROM installed (i checked through many apps from play store, they all showed that it has root access). So my question is "How do i unroot it and revert back to the original software/firmware/ROM? And after reverting how do i update it to stock 4.4.2 KitKat?"
Please provide step by step instructions and links as im new to this rooting/unrooting.
Cheers!

Little guide
Zohaibzx said:
I will try to make my question as simple as i can.
I bought a used LG Optimus G F-180 yesterday. Its rooted with a custom ROM installed (i checked through many apps from play store, they all showed that it has root access). So my question is "How do i unroot it and revert back to the original software/firmware/ROM? And after reverting how do i update it to stock 4.4.2 KitKat?"
Please provide step by step instructions and links as im new to this rooting/unrooting.
Cheers!
Click to expand...
Click to collapse
There are a lot of threads about flashing new ROM. Dont make in future more similar threads.
USE SEARCH BEFORE POSTING.
Hi,
IM NOT RESPONSIBLE FOR ANY DAMAGE OR UNSUCCESFULL FLASH. EVERY PHONE IS DIFFERENT. EVEN EVERY LG OPTIMUS G IS DIFFERENT, in its way.. YOU BRICK=YOU FIX.
YOU CAN FOLLOW THIS GUIDE TOO. http://forum.xda-developers.com/showthread.php?t=2498102
But LG flash tool 2014 is simplier.
First make sure you have:
Fully charged phone,
Know how to enter download mode (turn off phone > hold volume buttons > connect to pc)
Turned off debugging mode
IF SOMETHING GO WRONG AND YOU WANT GO BACK FROM DOWNLOAD MODE, HOLD POWER BUTTON FOR ABOUT 10 Seconds, than release it and phone will restart. But disconnect from pc first...
DOWNLOADED:
LG flash tool - http://forum.xda-developers.com/showthread.php?t=2797190
Drivers.
KDZ FOR YOUR LG VARIANT.
Download LATEST LG Mobile Support Tool
All your data will be removed.
0. Unpack zip with flash tool somewhere to NEW folder. Name it what you like.
1. Enter download mode
2. In the LG Flash tool choose 3GQCT or CDMA it depends on what u have.. I guess 3GQCT
And choose CS_EMERGENCY (always when coming back from custom ROM)
And choose KDZ with your Original system, which HAS TO be placed in LG FLASH TOOL folder.
3. Click Normal Flash > Start > choose region (korea) and language (what u want)
4. Now the process will begin.
5. After finish flash, your phone can bootloop. Than you have to make reset to clean it up.
6. Done, you have clean system and everything.
Tip for future.
!!Dont change radio in LG, you can mess it up...!!
Thanks to:
@davevinci
@quangnhut123
And my friend @hpesojames
If something is not good, pm me.

Related

[Q] [Help] LG Optimus G E975 bricked and no method is working to solve the issue!!!

Hi devs
I am an unfortunate soul as my recently purchased LGOG E975 just got bricked. The whole story goes like this -
I successfully rooted the phone one week ago and it was working fine until yesterday when I uninstalled the Google Play Movies app via Root Delete app. The problem started when I restarted the phone - it gave a "Security error" on boot and went into restart loop. Worried I searched at Xda forum for the solution and tried the "TeenyBins" method first (here http://forum.xda-developers.com/showthread.php?t=2249500). But it only aggravated the problem - at 85% of process the phone showed as disconnected from LGNPST and after trying many times the same problem persisted (the process never got to 100%). However the method installed TWRP custom recovery in the phone and a Google Logo replaced the LG logo at boot. Phone was normally booting in download mode and custom recovery but the recovery is unable to do anything - it shows as "Failed" whenever I try to wipe any cache, mount any partition, flash any custom ROM (which I pushed via adb) or take backup. Rather it shows "No OS installed" whenever I reboot, power off etc. TWRP is also showing no data inside sdcard via the inbuilt file manager. What is the problem?
Fed up, I tried LG Support tool - phone is successfully detected in "download mode" (everything is shown including the OS version which means OS is intact). I choose "phone recovery" option in LG support tool and it successfully downloaded the stock firmware (about 1.1 GB wait wait and wait) and when it tried to flash the phone it showed as the phone is not connected and instructed to unplug the phone and restart it and then again connect to PC. I followed everything carefully putting the phone in download mode again but again and again same error......Oh God for heavens sake....
Fed up, I then tried this method (http://forum.xda-developers.com/showthread.php?t=2010624) - downloaded the latest KDZ (>1GB) according to my phone from LG servers and used the KDZ FW Updater to flash the phone but the tool gave error "File extracted error" and I repeated the process again and again but no avail..............here I am, after 48 hours of desperation having a phone with the same **** Google logo on boot and the screen goes black...nothing happens thereafter..
Please forum devs, experts, moderators or any kind soul, I beg you to help me.... :crying:
If yu ve done the second method before instead of lgnpst tool there may b chances of helping yu.... And make sure which bin nd dll file yu flashed...??
Sent from my LG-E975 using xda premium
OK One question.
Can you get into download mode? Flash MODE?
Follow this
1.Install all drivers LG
2.Download firmware from here http://www.lg-phones.org/official-stock-lg-optimus-g-firmware-rom.html
3.Download http://www.mediafire.com/download/sj5y073xal03ntw/KDZ_FW_UPD_EN.rar
4.Extract KDZ_FW_UPD on desktop
5.Install msxml.exe
6.When done run windows enabler. You will see the icon and left klick on it and choose ON
Now you should se ON at the ICON
7.When done start KDZ_FW_UPD.exe
8.Chose 3GQCT in TYPE and Phone Mode CS_Emergency
9.Then Turn of the Phone. Now hold Vol UP and Vol Down at same time. Hold and plug in the USB cable into your phone
Now you should be in DOWNLOAD mode
10.Now chose your firmware in KDZ File and press Launch Software Update
If it starts to flash dont interrupt it until you see PARAM 1 again. You phone will auto reboot at PAram 95 but dont discconect until you see PARAM 1 again.
If you get bootloop when restart give it 2 min. If it keeps show LG logo then turn of and do FACTORY RESET
Hold Vol up + Power at same TIME i think Now you should get Factory Reset MENU. Now press power again and it should work.
GOOD LUCK
Re
bihslk said:
OK One question.
Can you get into download mode? Flash MODE?
Follow this
1.Install all drivers LG
........
4.Extract KDZ_FW_UPD on desktop
5.Install msxml.exe
6.When done run windows enabler. You will see the icon and left klick on it and choose ON
Now you should se ON at the ICON
7.When done start KDZ_FW_UPD.exe
8.Chose 3GQCT in TYPE and Phone Mode CS_Emergency
9.Then Turn of the Phone. Now hold Vol UP and Vol Down at same time. Hold and plug in the USB cable into your phone
Now you should be in DOWNLOAD mode
10.Now chose your firmware in KDZ File and press Launch Software Update
If it starts to flash dont interrupt it until you see PARAM 1 again. You phone will auto reboot at PAram 95 but dont discconect until you see PARAM 1 again.
If you get bootloop when restart give it 2 min. If it keeps show LG logo then turn of and do FACTORY RESET
Hold Vol up + Power at same TIME i think Now you should get Factory Reset MENU. Now press power again and it should work.
GOOD LUCK
Click to expand...
Click to collapse
Thanks for your time dear
but I have exactly followed the process you mentioned and unfortunately still got the KDZ extract error. I have downloaded KDZ for my phone from different locations multiple times but none of the KDZ worked with KDZ FW Updater. It looks like the current KDZ FW Updater is unable to handle the large KDZ files (>1GB) of newer phones while it works fine for older smaller KDZs. In this way this updater is a bit outdated. I request the developers to please update this wonderful tool to make it compatible with latest KDZs.
Try using kdz from romania,it has 982 mb and it's 10D.
Sent from LG E975 pwd by CM 10.1
technomedico said:
Thanks for your time dear
but I have exactly followed the process you mentioned and unfortunately still got the KDZ extract error. I have downloaded KDZ for my phone from different locations multiple times but none of the KDZ worked with KDZ FW Updater. It looks like the current KDZ FW Updater is unable to handle the large KDZ files (>1GB) of newer phones while it works fine for older smaller KDZs. In this way this updater is a bit outdated. I request the developers to please update this wonderful tool to make it compatible with latest KDZs.
Click to expand...
Click to collapse
But i flashed mine KDZ and its above 1GB and it extracted without issue. It must be something with your PC or something.
Mine extracted without issues
I think you have CORRUPT DOWNLOADS.
Do you unzip the KDZ file from the RAR? Or do you point KDZ Updater to the RAR file? You must unpack RAR so you file will be shown as E97510B_00.KDZ this is the Europe Open Version.
Remember if you unrar the file check if any errors coming when unpacking. If so then your RAR is corrupted and you need to redownload.
'did you RUN Updater as ADMIN?
Download this version of the KDZ European Open
17. lgmobile.com/LGE975/ANEUBL/E97510B_00/E97510B_00.kdz
http://www.lg-phones.org/official-stock-lg-optimus-g-firmware-rom.html
It must WORK.
---------- Post added at 01:47 PM ---------- Previous post was at 01:44 PM ----------
kimitza said:
Try using kdz from romania,it has 982 mb and it's 10D.
Sent from LG E975 pwd by CM 10.1
Click to expand...
Click to collapse
It doesnt matter. Mine is on 1GB and extracted without problem
Re
bihslk said:
But i flashed mine KDZ and its above 1GB and it extracted without issue. It must be something with your PC or something.
Mine extracted without issues
I think you have CORRUPT DOWNLOADS.
Do you unzip the KDZ file from the RAR? Or do you point KDZ Updater to the RAR file? You must unpack RAR so you file will be shown as E97510B_00.KDZ this is the Europe Open Version.
Remember if you unrar the file check if any errors coming when unpacking. If so then your RAR is corrupted and you need to redownload.
'did you RUN Updater as ADMIN?
Download this version of the KDZ European Open
17. lgmobile.com/LGE975/ANEUBL/E97510B_00/E97510B_00.kdz
It must WORK.
Click to expand...
Click to collapse
I have the .KDZ file and not .rar but I did not run the program as admin so will try again. It may be a corrupt download so will download again.
One question though, my phone is E97510E_00 (Indian version) so can I flash with the 10B open Europ. version KDZ you mentioned above?
Basically all firmwares are identical.the only differences are operator related. If you can find what are the 4g/lte frequencies of your operator,i could tell you what europe firmware to flash.if you don't have/want 4g,i guess you could flash the latest 10D european kdz without problems.
Sent from LG E975 pwd by CM 10.1
Mate just flash EU version so you can have working phone. If you sucess you can seek for answer later to flash indian ver.
Sent from my LG-E975 using xda premium
exactly same problem!
hello my friend,
i have exactly the same problem as you with the same results.today ill try doing this in a desktop and see if the extract problem is gone...it drives me crazy.
please if yu fing something write it here...you ll save me!thank you!
p.s. i have f180 U+ edition
ok i found solution combining all of what i ve read..(and read a lot)
1)find a custom rom (i used avatar) but unzip it and go to \META-INF\com\google\android and open updater script with notepad.Delete this "(assert(getprop("ro.product.device") == "e975" || getprop("ro.build.product") == "e975");"
then save the file.
go to first folder that u unzipped and take MetaInf,boot img and system and put them in a new zip.
2)so since u have twrp in your telephone,push with adb the zip from step 1 inside the phone (how to push a rom here)
3)the phone will normally open when you reboot.if you dont have signal go here and download your phones modem.Copy it through your pc to your phone and then reboot again to recovery mode and install this file(do not unzip it)
clear cache,do a factory reset and in the next boot you ll be allright!
hi
MafiaGR said:
ok i found solution combining all of what i ve read..(and read a lot)
1)find a custom rom (i used avatar) but unzip it and go to \META-INF\com\google\android and open updater script with notepad.Delete this "(assert(getprop("ro.product.device") == "e975" || getprop("ro.build.product") == "e975");"
then save the file.
go to first folder that u unzipped and take MetaInf,boot img and system and put them in a new zip.
2)so since u have twrp in your telephone,push with adb the zip from step 1 inside the phone (how to push a rom here)
3)the phone will normally open when you reboot.if you dont have signal go here and download your phones modem.Copy it through your pc to your phone and then reboot again to recovery mode and install this file(do not unzip it)
clear cache,do a factory reset and in the next boot you ll be allright!
Click to expand...
Click to collapse
Hi,
Really excited, but can u please tell me the step by step procedure. My phone is a F180L korean Sim and i really dont know which is my actual make.. i mean like E973 or E975. I bought this phone to india and unfortunately its U+ sim locked and i was unable to use this phone in indian networks. Hence after going trough this forum, i learned how to change a firmware and how to convert this phone to E975 and i downloaded one for india from the official LG site and there were KDZ extraction error. i tried it with the LG PC sync method and its showing the memory is low and free up some space in the memory. but after downloading a firmware for Europe, i could update my phone into E975, but my indian sim is not getting connected. So i request everyone for a solution. I tried many things already and soft bricked many times.. luckily i could recover it using LG support.
SO KINDLY TELL US HOW U DID IT WITH THE AVATAR ROM AND WHAT DO U MEAN BY \META-INF\com\google\android.
Many thanks
NJ
nijujose said:
Hi,
Really excited, but can u please tell me the step by step procedure. My phone is a F180L korean Sim and i really dont know which is my actual make.. i mean like E973 or E975. I bought this phone to india and unfortunately its U+ sim locked and i was unable to use this phone in indian networks. Hence after going trough this forum, i learned how to change a firmware and how to convert this phone to E975 and i downloaded one for india from the official LG site and there were KDZ extraction error. i tried it with the LG PC sync method and its showing the memory is low and free up some space in the memory. but after downloading a firmware for Europe, i could update my phone into E975, but my indian sim is not getting connected. So i request everyone for a solution. I tried many things already and soft bricked many times.. luckily i could recover it using LG support.
SO KINDLY TELL US HOW U DID IT WITH THE AVATAR ROM AND WHAT DO U MEAN BY \META-INF\com\google\android.
Many thanks
NJ
Click to expand...
Click to collapse
so this is what i did.
1.use LGNPST prog with the small file for installing TWRP in your phone (see how here)
2.Download a custom ROM.I used this.The file will be in ZIP format/
3.copy your rom in a new folder.Rightclick on ROM and press extract here.The extracted files will be 2 folders (METAINF,SYSTEM) and boot.img.Open META-INF\com\google\android (these are folders) and there will be a file "updater script ".Right click on this file and select open with notepad.Then delete the following " (assert(getprop("ro.product.device") == "e975" || getprop("ro.build.product") == "e975"); ".Press ctrl+s to save the file.
4.Go to the starting folder,select again METAINF,SYSTEM and boot.img ,right click them and press add to archive(with winrar).In there give a name and be sure to select zi compression.So this new ZIP you've just created is the new ROM.
5.Now you have to send the ZIP you created to your phone.This can be done with ADB push.To read how to do it please read here
6.Once you transfer that file into phone you have to disconnect your phone and press vol+ button and then power on.This is FASTBOOT.Press 2 time the vol- button so it says RECOVERY MODE.Then press the power button and wait to open the TWRP menu.
7.Now that you are in TWRP select wipe and wipe dalvik,cache and do factory reset.Then go to install and youll see the pushed ZIP file that you transfered before.Click on this and press install.
8.After a while it will write that is done.Do a reboot and the new ROM will be fine.
9.If it opens and you dont have signal go to this site here and download the modem for your phone.Mine worked with Korean version modem.I dont know what you should install for Pakistan unfortunatelly.So when you download it,send it in your phone through usb connection (now your phone works,no need of ADB push) and then go to TWRP in recovery mode and install modem like the way you installed the ROM before.Wipe data again and do a factory reset and then your phone should be ok.
BTW you have to know that these ROMS have some bugs but you can do epic customization and the guys always update the rom over the air to do it more stable.
If you have any question feel free to make them!Good luck!
MafiaGR said:
so this is what i did.
1.use LGNPST prog with the small file for installing TWRP in your phone (see how here)
2.Download a custom ROM.I used this.The file will be in ZIP format/
3.copy your rom in a new folder.Rightclick on ROM and press extract here.The extracted files will be 2 folders (METAINF,SYSTEM) and boot.img.Open META-INF\com\google\android (these are folders) and there will be a file "updater script ".Right click on this file and select open with notepad.Then delete the following " (assert(getprop("ro.product.device") == "e975" || getprop("ro.build.product") == "e975"); ".Press ctrl+s to save the file.
4.Go to the starting folder,select again METAINF,SYSTEM and boot.img ,right click them and press add to archive(with winrar).In there give a name and be sure to select zi compression.So this new ZIP you've just created is the new ROM.
5.Now you have to send the ZIP you created to your phone.This can be done with ADB push.To read how to do it please read here
6.Once you transfer that file into phone you have to disconnect your phone and press vol+ button and then power on.This is FASTBOOT.Press 2 time the vol- button so it says RECOVERY MODE.Then press the power button and wait to open the TWRP menu.
7.Now that you are in TWRP select wipe and wipe dalvik,cache and do factory reset.Then go to install and youll see the pushed ZIP file that you transfered before.Click on this and press install.
8.After a while it will write that is done.Do a reboot and the new ROM will be fine.
9.If it opens and you dont have signal go to this site here and download the modem for your phone.Mine worked with Korean version modem.I dont know what you should install for Pakistan unfortunatelly.So when you download it,send it in your phone through usb connection (now your phone works,no need of ADB push) and then go to TWRP in recovery mode and install modem like the way you installed the ROM before.Wipe data again and do a factory reset and then your phone should be ok.
BTW you have to know that these ROMS have some bugs but you can do epic customization and the guys always update the rom over the air to do it more stable.
If you have any question feel free to make them!Good luck!
Click to expand...
Click to collapse
Thanks a Lot MafiaGR....
I didn't tried this yet as i did a different method and i am using it on trial basis. is it works.. then i am more than happy enough to continue... let me explain what i did.. I have rooted my F180L korean U+ sim unlocked phone with motochopper. After rooting the same, then i unlocked my bootlocker with freegee-beta (many thanks to Shell). Then i downloaded a kdz file (E97510D_00.kdz , Europe Open) from the LG server. then i updated the same by putting my phone in download mode (volume up+volume down + USB connected + power ON) and updated with KDZ updated program.. after quite some time my phone got rebooted with E975 Europe Open firmware. Even after this i was unable to get indian network in the phone. So Using Rom manager, i downloaded CyanogenMod 10.1 Rom with GApps and flashed my ROM again. Now my phone is getting connected with indian network. but the problem i am facing is with my network not getting registered... i can find about 12 networks in my phone but unable to register into any of them...Need help from u guys...
Thanks in advance
NJ
Finally I got the problem solved and my phone back !!
Unfortunately nothing worked for me as suggested by you, guys may be I was doing something wrong or else.
Finally I decided to contact LG Service Center in my city and after initial try they told me that "the phone is not getting connected in flashing mode" and I had to submit the phone to them. Next day they called me and told that there is a hardware problem and a "part/PCB" will be replaced within next 7 days. And today they called me again with the good news - your phone has been repaired and I can pick it up anytime. Elated I got the phone within an hour, live and kicking. Thank God I got my loving phone back and most importantly they did not detected that the phone was rooted and thus out of warranty. Lucky me!!! :laugh:
Any way thanks everyone for your prompt help....:good:
nijujose said:
Thanks a Lot MafiaGR....
I didn't tried this yet as i did a different method and i am using it on trial basis. is it works.. then i am more than happy enough to continue... let me explain what i did.. I have rooted my F180L korean U+ sim unlocked phone with motochopper. After rooting the same, then i unlocked my bootlocker with freegee-beta (many thanks to Shell). Then i downloaded a kdz file (E97510D_00.kdz , Europe Open) from the LG server. then i updated the same by putting my phone in download mode (volume up+volume down + USB connected + power ON) and updated with KDZ updated program.. after quite some time my phone got rebooted with E975 Europe Open firmware. Even after this i was unable to get indian network in the phone. So Using Rom manager, i downloaded CyanogenMod 10.1 Rom with GApps and flashed my ROM again. Now my phone is getting connected with indian network. but the problem i am facing is with my network not getting registered... i can find about 12 networks in my phone but unable to register into any of them...Need help from u guys...
Thanks in advance
NJ
Click to expand...
Click to collapse
maybe you hae to try diferent modems for the mobile phone until you find the right one.Mine works with the Korean modem although i live in Greece.You may have to find exactly in what frquency your provider works and then see where in the world a provider has exasctly the same frequency as yours,and then download the modem drivers from the LGOGs that work in this country.
Hope it works!
---------- Post added at 08:59 PM ---------- Previous post was at 08:53 PM ----------
technomedico said:
Unfortunately nothing worked for me as suggested by you, guys may be I was doing something wrong or else.
Finally I decided to contact LG Service Center in my city and after initial try they told me that "the phone is not getting connected in flashing mode" and I had to submit the phone to them. Next day they called me and told that there is a hardware problem and a "part/PCB" will be replaced within next 7 days. And today they called me again with the good news - your phone has been repaired and I can pick it up anytime. Elated I got the phone within an hour, live and kicking. Thank God I got my loving phone back and most importantly they did not detected that the phone was rooted and thus out of warranty. Lucky me!!! :laugh:
Any way thanks everyone for your prompt help....:good:
Click to expand...
Click to collapse
well this is the best choice,even if they say that if you root your mobile phone,you lose the guarantee.But its a bit difficult for me to do that since i ordered the mobile phone from Chine and i live in Greece!So i should give away my phone a long time to get fixed and i cant wait!XD
U r right.. problem with the Modem...
Originally Posted by nijujose
Thanks a Lot MafiaGR....
I didn't tried this yet as i did a different method and i am using it on trial basis. is it works.. then i am more than happy enough to continue... let me explain what i did.. I have rooted my F180L korean U+ sim unlocked phone with motochopper. After rooting the same said:
Many thanks MafiaGR
You are absolutely correct. The problem for me was with the Modem for sure. I flashed with a Nexus 4 modem in my phone and i could register network in my phone. but the problem now is that the signal is very weak. I tried flashing many modems like E970 Att, then E973 Tellus and few more.. but i couldnt get a better signal. if the signal is good, then the sim is not getting registered. i tried to search for an indian modem for E975 which i couldnt find.. moreover i am unable to download the indian/thailand/hongkong firmwares from LG official site as its saying that the Access is denied. Please help me with those links as i am really desperate to use my phone...
Thanks again
NJ
Click to expand...
Click to collapse
If you dont use 3g or lte change ti 2g
Skickat från min LG-E975 via Tapatalk 2
Phone reboots; post custom rom
HI MafiaGR
I followed every step and managed to install custom rom , tried avatar , thinking bridge, cm10.1 nightly, but once boot the phone hangs and reboot and gives kernel crash message . I tried CM10.1 with Kite r30 kernel , no crash report but still phone reboots.
Do help.
suratvijay said:
HI MafiaGR
I followed every step and managed to install custom rom , tried avatar , thinking bridge, cm10.1 nightly, but once boot the phone hangs and reboot and gives kernel crash message . I tried CM10.1 with Kite r30 kernel , no crash report but still phone reboots.
Do help.
Click to expand...
Click to collapse
Install Rom. Reboot recovery. Flash Kernel then wipe dalvik, wipe cache, factory reset then reboot.
Sent from my LG-E975 using xda premium

KDZ file extracts corrupt CAB file

Hello guys,
I upgraded my friend's recently purchased LG Optimus G.
I rooted the phone successfully with TWRP recovery.
I Unlocked the boot loader successfully.
I flashed a custom android 4.3 rom.
The phone was working absolutely fine.
Then, my friend took it home with him, and tried to flash another custom rom (He is a noob).
Now, after rebooting, the phone flashed the 'google' logo with a grey 'unlocked lock' icon and the screen goes blank.
I can not even figure out if the phone is on or not (the soft keys does not light up if I touch them).
After all, I tried to use the UNBRICK method using a guide but the problem is that the software won't proceed after extracting .KDZ file.
I tried downloading .KDZ file using the xda app which asks for phone model and serial number for the download, several times but no success.
I tried downloading the .KDZ file using a URL in which i have to write the IMEI number to get myself a download link. That shows corrupted too.
Can anybody help me to get a working KDZ file?? I think this will get me through the process.
OR
If there is any other possible way, please let me know.
Thanks in advance
bilalraybrig said:
Hello guys,
I upgraded my friend's recently purchased LG Optimus G.
I rooted the phone successfully with TWRP recovery.
I Unlocked the boot loader successfully.
I flashed a custom android 4.3 rom.
The phone was working absolutely fine.
Then, my friend took it home with him, and tried to flash another custom rom (He is a noob).
Now, after rebooting, the phone flashed the 'google' logo with a grey 'unlocked lock' icon and the screen goes blank.
I can not even figure out if the phone is on or not (the soft keys does not light up if I touch them).
After all, I tried to use the UNBRICK method using a guide but the problem is that the software won't proceed after extracting .KDZ file.
I tried downloading .KDZ file using the xda app which asks for phone model and serial number for the download, several times but no success.
I tried downloading the .KDZ file using a URL in which i have to write the IMEI number to get myself a download link. That shows corrupted too.
Can anybody help me to get a working KDZ file?? I think this will get me through the process.
OR
If there is any other possible way, please let me know.
Thanks in advance
Click to expand...
Click to collapse
I had the same problem. Try downloading several KDZ files cause the programm won't download the good one at once. I got mine at the 4th attempt.
bilalraybrig said:
Hello guys,
I upgraded my friend's recently purchased LG Optimus G.
I rooted the phone successfully with TWRP recovery.
I Unlocked the boot loader successfully.
I flashed a custom android 4.3 rom.
The phone was working absolutely fine.
Then, my friend took it home with him, and tried to flash another custom rom (He is a noob).
Now, after rebooting, the phone flashed the 'google' logo with a grey 'unlocked lock' icon and the screen goes blank.
I can not even figure out if the phone is on or not (the soft keys does not light up if I touch them).
After all, I tried to use the UNBRICK method using a guide but the problem is that the software won't proceed after extracting .KDZ file.
I tried downloading .KDZ file using the xda app which asks for phone model and serial number for the download, several times but no success.
I tried downloading the .KDZ file using a URL in which i have to write the IMEI number to get myself a download link. That shows corrupted too.
Can anybody help me to get a working KDZ file?? I think this will get me through the process.
OR
If there is any other possible way, please let me know.
Thanks in advance
Click to expand...
Click to collapse
1: Google logo plus unlock icon seems nexus device. May be he tried to convert it to nexus 4. I never tried it nor know if it requires any different way to get stock, so search.
2: download kdz from here choose 1gb or less kdz.
http://lg-phone-firmware.com/index.php?id_mod=20
Sent from my GT-P3100 using Tapatalk HD
atifsh said:
1: Google logo plus unlock icon seems nexus device. May be he tried to convert it to nexus 4. I never tried it nor know if it requires any different way to get stock, so search.
2: download kdz from here choose 1gb or less kdz.
http://lg-phone-firmware.com/index.php?id_mod=20
Sent from my GT-P3100 using Tapatalk HD
Click to expand...
Click to collapse
Thanks for the help.
I hope this will work
By the way,
What is the problem with greater than 1 GB files?
Just curious
bilalraybrig said:
By the way,
What is the problem with greater than 1 GB files?
Just curious
Click to expand...
Click to collapse
kdz installer we have cant extract files greater than 1.05 GB i do manage to get 1 or 2 files that were 1.08 GB but most wont.
max is 1.05 GB in my experience.
okay, thanks for the information!
Hey! I have done the download, used the update tool in CS_EMERGENCY mode, done with everything. now the phone is stuck on the LG logo..
I put it in recovery mode, and i used the wipe tool which was told in the guide, but the phone again stuck with a lying android bot with an exclamationary sign in a triangle.
What can I do next?
This happens.when you are not reading before. If you would do that,you would see that you need to perform a hard resetafter using kdz updater.
My advice,use the updater again and do a hard reset.on stock it's easy.
Sent from Asylum via LG E975/smart phones,dumb people.
bilalraybrig said:
Hey! I have done the download, used the update tool in CS_EMERGENCY mode, done with everything. now the phone is stuck on the LG logo..
I put it in recovery mode, and i used the wipe tool which was told in the guide, but the phone again stuck with a lying android bot with an exclamationary sign in a triangle.
What can I do next?
Click to expand...
Click to collapse
Don't know what guides you all are using
Only guide you need
1: get kdz 1.05 GB or less for your specific phone
2: using kdz flasher flash the kdz
3: if your phone boots goto backup and reset and do wipe. If not shutdown phone and do hard reset / wipe
4: root your phone And i mean just root your phone.
5: use freegee to unlock boot and get custom recovery. (If you want this)
Sent from my GT-P3100 using Tapatalk HD
U missed the hard reset!! Since kdz is dirty flashing!
This is so frustrating. I've downloaded kdz file so many times from 1.05Gb to a 0.98Gb, none gives a correct extraction in kdz update.

How to flash LG G Pro Lite offline

Alright, now i'm going to show you how to flash LG G pro lite using LG flash tool, this method does not required internet connection (offline).
So basically you need to download the kdz firmware for LG G pro lite and LG flash tool, this way you can flash your phone offline.
You maybe asking, why do i need to flash my phone? well here's some reasons why you want to flash your LG G pro lite:
your phone stuck in bootloop
you want to completely unroot the phone
you want to upgrade from jelly bean to kitkat
you want to downgrade from kitkat to jelly bean
your phone runs very slow and you want fresh install
you want to sell your phone
Remember that this is a DWYOR tutorial, means do with your own risk, this flashing method is tested successfully by me, but i'm not responsible if you damaged your phone.
Here's all the ingredients for this tutorial (stuff that you need)
LG united mobile driver,
LG G pro lite kdz firmware
LG flash tool 2014,
Visual C++ runtime
Computer running windows ( i use windows 7)
The LG G pro lite itself
Micro USB cable
Donuts and coffee with less sugar
Courage and confidence
Okay, after you get all the ingredients, we can begin to flash the phone, and don't forget to backup your data first, because all data inside internal memory will be gone after flashing.
Step by step how to flash LG G pro lite
install LG united mobile driver
install Visual C++ runtime
run LGFlashTool2014.exe
select type "CDMA" and phone mode as "DIAG"
select the kdz file (the firmware that you're going to use to flash the phone)
put the phone into download mode, read my previous article if you don't understand
click on "Normal Flash"
click ok on "select country & language" window
wait until the whole process finish
It's actually very easy to flash LG G pro lite offline using LG flash tool, now you can go from jelly bean to kitkat back and forth.
This flashing method could also be applied to other LG smartphones that runs android, such as LG G3, G2, G2 mini, etc.
NOTE
when i was flashing my G pro lite dual from kitkat 4.4.2 to jelly bean 4.1.2, after finish flashing i got stuck on boot logo, i solve this by doing factory hard reset and the phone boot normally.
make sure when you plug the phone to computer (download mode) there is no error message, install the latest LG united mobile driver.
it is recommended that you do factory reset before flashing your phone.
MEDY123 said:
Alright, now i'm going to show you how to flash LG G pro lite using LG flash tool, this method does not required internet connection (offline).
...
Click to expand...
Click to collapse
Wrong Forum...
Theres already a back to stock thread..
http://forum.xda-developers.com/showthread.php?t=2420219
As mentioned above there is already a thread for this here. As we do not need 2 guides for the same thing I am closing this one.
Thread closed

flash wrong firmware on lg ls980

I flash wrong firmware on lg g2 ls980. I try my hard to flas ls980 fimware but fail. Pls help me as soon as posible.
The problem you're facing right now is because you bought a refurbished phone whose build.prop was edited to represent it as D802.. your phone should still be working so first of all you need to plug in a mouse using USB OTG cable and go to settings on your phone and enable USB debugging. to do so go to software information and tap build number seven times unless it shows a pop up saying you're a developer now.. go back to settings open developer options and enable usb debugging. plug in your phone and allow permissions that pop up on your phone. Afterwards download LS980-ZV8 tot by searching around the forum. i'll put in the description later if you cant find one but its not hard to find.. you can even just google it. then using hex editor edit its build no in build.prop from LS980 to D802 or whatever LG flash tool shows your existing model is.( a google search on changing build no would help ) afterwards enter download mode and flash edited tot file.. now the phone should reboot at around 80% and it would stay in boot loop. So now you have to enter download mode again and flash LS980ZV8 tot unedited. LG flash tool should read your device build as LS980 now and the tot should flash without a hassle. your phone should now work properly but network wont work. for that you need to do a couple of more things. XDA search unlock zv8 and you will find suitable information. Follow the method with patience and confidence i faced this problem myself and remained confused for over two weeks untill i put everything together.. i hope this reply will help you.. if you have any questions feel free to ask.

LG G3 Back from the dead (was hard bricked) - Need help to start over now

Hey guys
First, a little bit of history:
I own a G6 now, so I wanted to have some fun with my G3.
I rooted it (LGOneClickRoot), installed TWRP, installed LineageOS 14.1 and everything went pretty well.
The problem was that LineageOS 14.1 is terrible, huge lags, tons of bugs, so I tried installing another ROM through TWRP, I don't know what I messed up but I messed up and the flash failed. I dont remember exactly what I tried to flash after that but I failed again and then classic --> Stucked on LG boot logo, no recovery mode, no download mode, nothing.
So I used the popular fix for hardbricked G3, creating a short between test point and ground while connecting it to revive him, and it worked. I went with the whole procedure in BoardDialg and stuff. Kinda surprised by myself that I didnt go full-panic mode creating tons of threads everywhere lol, I managed to make it work even if it took me something like half a day of learning and work.
Now I'm back to stock Android 4.4.2, rooted with LGOneClickRoot again and everything is fine.
I mean... Almost everything is fine, because now I want to be able to install Magisk, and I found that Magisk is for Android 5+.
So there are some informations I need to gather before going further and risk a brick again (please no more short on the motherboard lol):
1- Can I flash a stock Lollipop ROM with LG Flash Tool in download mode using CSE Flash ? Is it a proper way to do it or do I really need to go through this boring TWRP recovery flashing again ?
2- where can I find such a ROM (stock Lollipop for d855) ? And which version to chose ? v20a, v20e, v20f, v20h, v20i, v20p, v20t, v20u, v20w or v21a ? I've been looking for hours now, hard to find reliable informations about all different versions.
Thanks for the read, I hope someone can help me
UPDATE:
I flashed a Lollipop v20f with LG Flash Tool and it's working fine.
I heard that after v20f, newer versions were "harder" to root so I sticked with v20f.
I'm gonna play around with Magisk now and see how it goes.
I'm in the same boat. I also went back to 4.4.2 via TOT. The I rooted and installed TWRP. how I want to restorel my RR 5.8.5 from a TWRP backup. My question is to I have to install the 35B bootstack before or after the restore or at all?
Hi,
Upgrade (LGFlashtool + CSE flash) to V30B
Follow this post ==>
https://forum.xda-developers.com/lg-g3/general/root-twrp-marshmallow-d855-30b-t3286268
Then you can install custom Rom ou upgrade to stock V30N (with root : there is a post about it)
Hey how did you do the unbrick process? I stuck at flashing kdz eventhough i have correct dll and drivers installed
hi,
Try LGUP instead of LGFlashtool (download mode and type *.kdz + select kdz file in LGUP)
Depends if you're hardbricked or softbricked. I was hardbricked so I had to create a bridge between 2 points on the motherboard and reflash everything one by one. I formated recently and didnt keep all these things but I can get into it again to try to help you.
EDIT: LGFlashTool isn't enough if you're hardbricked, you'll have to use other tools and open your phone. First step is identify if you're softbricked or hardbricked, google it you'll find your answer
Mine was hardbricked. I use shorting test point method and successfully flashing partition. Then I flash kdz using LG flash tool 2014, my phone stuck on boot logo. Then I do factory reset. Still same. Last option, I use LG UP. It stuck on LAF info with number on it. Is my LAF file damaged?
Hi,
With Boarddiag try this :
1-EMMC TEST Option "erase" ;
2- then Restore theses partitions and reboot in download mode and flash Kdz.
1)Boot
2)Aboot
3)BackupGpt
4)Boot
5)dbi
6)laf
7)PrimaryGpt
8)Recovery
9)rpm
10)tz
11)sbl1

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