Like many others i recently got trapped into 'Security Error' problem and phone was refusing to boot-up.(after root i deleted some system apps )
luckily i found the solution
this guide should work for other LG's phone too.
so here are the steps:
1. update/install USB Driver for windows
2. now enter into "download/emergency mode" of your phone... but how??
(i) remove battery then insert battery
(ii) press and hold both vol+ and vol- buttons and connect to computer via data cable. you will see LG logo and '>download mode' on bottom of mobile screen.you will also hear a 'connecting sound' from PC that indicates that your phone is now connected.
3. disconnect the phone from PC(remove data cable) and install LG MOBILE SUPPORT TOOL
4. run that B2CAppSetup file, it will install LG SUPPORT TOOL online so wait for some minutes.
5. now in main window of LG MOBILE SUPPORT TOOL you will see "waiting for connection".
View attachment 2934639
6. connect your phone to PC (via data cable)
7.LG TOOL now should try to connect your phone to it, so wait for few seconds.
View attachment 2934640
8. now in LG TOOL got to 'OPTIONS' > 'UPGRADE RECOVERY'
View attachment 2934641
View attachment 2934642
9. make your self a cup of coffee or take a nap if your internet connection is too slow because it will download approx.500-600 MB of software and automatically install it on your phone.
(if your upgrading stuck at 4% then disconnect the phone and connect it again in 'download mode')
View attachment 2934643
10. Dance
there is a another method too using kdz but that didn't work for me Flashing KDZ on LG L5 II
PIECE OF ADVICE: never ever try to delete any system app of Stock Rom otherwise you will get 'Security error' (not even after unlocking bootloader) and let me know if there is any solution to it.
tested guides by me on LG L5 ii e450 on win8.1:-
-for rooting [Guide] Root LG Optimus L5 II E450
-for CWM recovery (L5 II) CWM for Locked Bootloader(Beta 2)
-for unlocking bootloader (L5 II) Unlocked Bootloader (Optima Team)
Actually I've done it with locked bootloader and it's still working as a charm.
JerryGoyal said:
Like many others i recently got trapped into 'Security Error' problem and phone was refusing to boot-up.(after root i deleted some system apps )
luckily i found the solution
this guide should work for other LG's phone too.
so here are the steps:
1. update/install USB Driver for windows
2. now enter into "download/emergency mode" of your phone... but how??
(i) remove battery then insert battery
(ii) press and hold both vol+ and vol- buttons and connect to computer via data cable. you will see LG logo and '>download mode' on bottom of mobile screen.you will also hear a 'connecting sound' from PC that indicates that your phone is now connected.
3. disconnect the phone from PC(remove data cable) and install LG MOBILE SUPPORT TOOL
4. run that B2CAppSetup file, it will install LG SUPPORT TOOL online so wait for some minutes.
5. now in main window of LG MOBILE SUPPORT TOOL you will see "waiting for connection".
View attachment 2934639
6. connect your phone to PC (via data cable)
7.LG TOOL now should try to connect your phone to it, so wait for few seconds.
View attachment 2934640
8. now in LG TOOL got to 'OPTIONS' > 'UPGRADE RECOVERY'
View attachment 2934641
View attachment 2934642
9. make your self a cup of coffee or take a nap if your internet connection is too slow because it will download approx.500-600 MB of software and automatically install it on your phone.
(if your upgrading stuck at 4% then disconnect the phone and connect it again in 'download mode')
View attachment 2934643
10. Dance
there is a another method too using kdz but that didn't work for me Flashing KDZ on LG L5 II
PIECE OF ADVICE: never ever try to delete any system app of Stock Rom otherwise you will get 'Security error' (not even after unlocking bootloader) and let me know if there is any solution to it.
tested guides by me on LG L5 ii e450 on win8.1:-
-for rooting [Guide] Root LG Optimus L5 II E450
-for CWM recovery (L5 II) CWM for Locked Bootloader(Beta 2)
-for unlocking bootloader (L5 II) Unlocked Bootloader (Optima Team)
Click to expand...
Click to collapse
getting stuck at 4%
Beershake said:
Actually I've done it with locked bootloader and it's still working as a charm.
Click to expand...
Click to collapse
how?in stock rom?
Thanks jerry goyal :fingers-crossed:
LG-E460 "security error" problem
My phone (LG E460) got stuck into bootloop with "security error" error. I tried multiple times flash a .kdz file via LG Mobile Suppor Tool, but it gets stuck on 5% of installation process. Any thoughts how I can repair this issue?
Jerry at the installation of lg mobile support its showing me popup of mfc100.dll is missing can you pls help with that
I got stuck with the first step. Couldn't see the menu. It keeps buzzing and the black screen stays. help
JerryGoyal said:
Like many others i recently got trapped into 'Security Error' problem and phone was refusing to boot-up.(after root i deleted some system apps )
[/URL]
Click to expand...
Click to collapse
I did everything as shown but im still stuck. When i turn device one lg logo shows up, after a few seconds it spins around and i can hear boot sound, and lights turn on. I left it like that for about an hour but its still stuck.
device: LG e460
Thinking myself to flash orginal recovery. Atm thinking about booting into recovery via minimal adb in usb debug mode
Reason: i fail to boot into cwm since month with my e440. Recovery reboot wiget never worked also expeliced xposed model for this LG4ii has no boot into recovery option.
minimal adb code something like
adb devices #enter
adb reboot bootloader #enter
fastboot devices #enter insteat of fastboot may recovery or download
#in fastboot mode you can flash files by
fastboot flash recovery recovery.img #enter flash recovery.img
Click to expand...
Click to collapse
It seems the program just doesn't want to find the phone. I don't think it had Usb debugging enabled(Think that's the problem), cause its not my phone, but I have also tried changing usb ports, from usb2 to usb3 and restarted the phone. Any ideas?
It's great! Everything worked out without "stucking on 4%". The "security error" appeared on LG E450 after "rooting" and deleting some system apps.
Many thanks to author.
Related
I've been trying to flash my p768 for JB V20A VIETNAM. i used V20A TELCEL, MEXICO Before this flashing.
So I started flashing the KDZ file, followed all the necessary steps and finally when the process is at 15 percent, flashing stopped saying there is a problem with communication between cell phone and pc.
So i did the workoaround, remove the usb cable and wait for at least 10 secs and reconnect, then waited for all the drivers to install. After restarting the whole process it got stack still at 15 percent. Now I cannot get out of Software update mode even if I remove the battery and start the device again.
also i use Following method. and it dosent work. and at 15 percent, flashing stopped saying there is a problem with communication between cell phone and pc Again.
method:If you were on JB, the phone won't be recognized on "S/W Update" screen by the offline method. You must use the online method :
- Remove the lines you put in your "hosts" file ("127.0.0.1 csmg.lgmobile.com" and "127.0.0.1 csmgdl.lgmobile.com") then reboot your computer
- Connect your phone (on the "S/W Update" mode)
- Directly start "B2CAppSetup.exe" : it should detect your phone
- Click on "Customer Support" then "Recovery Phone" (see screenshot on http://forum.xda-developers.com/show....php?t=2217710)
- Wait and pray... It can be long because it downloads the last KDZ file from official LG servers.
plz help meeee
saman_z1384 said:
I've been trying to flash my p768 for JB V20A VIETNAM. i used V20A TELCEL, MEXICO Before this flashing.
So I started flashing the KDZ file, followed all the necessary steps and finally when the process is at 15 percent, flashing stopped saying there is a problem with communication between cell phone and pc.
So i did the workoaround, remove the usb cable and wait for at least 10 secs and reconnect, then waited for all the drivers to install. After restarting the whole process it got stack still at 15 percent. Now I cannot get out of Software update mode even if I remove the battery and start the device again.
also i use Following method. and it dosent work. and at 15 percent, flashing stopped saying there is a problem with communication between cell phone and pc Again.
method:If you were on JB, the phone won't be recognized on "S/W Update" screen by the offline method. You must use the online method :
- Remove the lines you put in your "hosts" file ("127.0.0.1 csmg.lgmobile.com" and "127.0.0.1 csmgdl.lgmobile.com") then reboot your computer
- Connect your phone (on the "S/W Update" mode)
- Directly start "B2CAppSetup.exe" : it should detect your phone
- Click on "Customer Support" then "Recovery Phone" (see screenshot on http://forum.xda-developers.com/show....php?t=2217710)
- Wait and pray... It can be long because it downloads the last KDZ file from official LG servers.
plz help meeee
Click to expand...
Click to collapse
use offline flashing, or CWM restore
cgigate said:
use offline flashing, or CWM restore
Click to expand...
Click to collapse
offline flashing dosent work.
how does CWM restore??
when i turne on or connect battery to my phone Software update mode is appear. help plz
saman_z1384 said:
offline flashing dosent work.
how does CWM restore??
when i turne on or connect battery to my phone Software update mode is appear. help plz
Click to expand...
Click to collapse
Download a cwm rooted backup from this link http://forum.xda-developers.com/showthread.php?t=2136204, copy it to your sd card, access recovery and after doing wipes restore from external sd card. If you have any problem say it here.
hugoglezp said:
Download a cwm rooted backup from this link http://forum.xda-developers.com/showthread.php?t=2136204, copy it to your sd card, access recovery and after doing wipes restore from external sd card. If you have any problem say it here.
Click to expand...
Click to collapse
my phone didnt root so i dont have cwm. and it shows just Software Upgrade Mode screen when turn on it. and dosent get out this mode.
. so how i use cwm rooted backup??
saman_z1384 said:
my phone didnt root so i dont have cwm. and it shows just Software Upgrade Mode screen when turn on it. and dosent get out this mode.
. so how i use cwm rooted backup??
Click to expand...
Click to collapse
forget about cwm,
hard/factory reset your phone ; turn it off, press vol- & home & power on
remove all lg drivers and software etc, reboot pc and install lg pc suit , try recovery from there
Lelus said:
forget about cwm,
hard/factory reset your phone ; turn it off, press vol- & home & power on
remove all lg drivers and software etc, reboot pc and install lg pc suit , try recovery from there
Click to expand...
Click to collapse
in try to to hard factory reset when i hold turn on Software update mode appear quicly!! and when i'm holding it for 10 seconds my phone go to turn off.
does it mean hard reset applied?
saman_z1384 said:
in try to to hard factory reset when i hold turn on Software update mode appear quicly!! and when i'm holding it for 10 seconds my phone go to turn off.
does it mean hard reset applied?
Click to expand...
Click to collapse
you are in upgrade mode, you need flash kdz directly. i killed my phone many times.
if you still not get , sold as "none working for parts on eBay "
Sent from my LG-E970 using Tapatalk HD
any body help mee???? :|
The LG Update Tool can install latest drivers for you: did you properly install them ? If your phone can start in "S/W Update" mode, the online unbricking method should work, that's why I think you have a driver issue. Did you also try on another computer with another Windows version ? (the most "driver friendly" version would be a Windows XP at least on SP2).
OperationNT said:
The LG Update Tool can install latest drivers for you: did you properly install them ? If your phone can start in "S/W Update" mode, the online unbricking method should work, that's why I think you have a driver issue. Did you also try on another computer with another Windows version ? (the most "driver friendly" version would be a Windows XP at least on SP2).
Click to expand...
Click to collapse
yes i try by 3 cpmputer. they have win 7. but it doesnt fix
1: download and unpack xufix.7z
2: use this guide to fastboot your phone, follow what sguerrini97 wrote in 1st post rather than what omap4boot app says
3: run start.bat as administrator
4: put your phone into sw upgrade mode - turn it off, remove battery , hold vol+ and power and plug the usb cable ,"S/W Upgrade" will appear on the screen after a few seconds, put battery back in.
5: use online or offline method to flash any kdz for 768
Lelus said:
1: download and unpack xufix.7z
2: use this guide to fastboot your phone, follow what sguerrini97 wrote in 1st post rather than what omap4boot app says
3: run start.bat as administrator
4: put your phone into sw upgrade mode - turn it off, remove battery , hold vol+ and power and plug the usb cable ,"S/W Upgrade" will appear on the screen after a few seconds, put battery back in.
5: use online or offline method to flash any kdz for 768
Click to expand...
Click to collapse
tnx lelus. i hope it work
same problem with P769
Will watch this fix for results. I have same issue with P769 which has been stuck in s/w upgrade loop after offline server crashed. was at point of 12 bin files in appdata phone folder when server stopped.
Lelus said:
1: download and unpack xufix.7z
2: use this guide to fastboot your phone, follow what sguerrini97 wrote in 1st post rather than what omap4boot app says
3: run start.bat as administrator
4: put your phone into sw upgrade mode - turn it off, remove battery , hold vol+ and power and plug the usb cable ,"S/W Upgrade" will appear on the screen after a few seconds, put battery back in.
5: use online or offline method to flash any kdz for 768
Click to expand...
Click to collapse
when i run start.bat and plug the usb cable. that says flash x-loader p1.bin <waiting foe device>
and Nothing happen anymore
saman_z1384 said:
when i run start.bat and plug the usb cable. that says flash x-loader p1.bin <waiting foe device>
and Nothing happen anymore
Click to expand...
Click to collapse
you have to fastboot your phone first then run start.bat
Lelus can you please post theses files for P769 I have T-Mobile V20D USA stuck in s/w ugrade mode? Many thanks and I hit the button.
dish53 said:
Lelus can you please post theses files for P769 I have T-Mobile V20D USA stuck in s/w ugrade mode? Many thanks and I hit the button.
Click to expand...
Click to collapse
http://forum.xda-developers.com/attachment.php?attachmentid=1971743&d=1368878496
When I fastbooted I get LG logo screen in reverse - which is something different from s/w upgrade I had before -- but then I open cmd prompt and run start.bat I get waiting for device
dish53 said:
When I fastbooted I get LG logo screen in reverse - which is something different from s/w upgrade I had before -- but then I open cmd prompt and run start.bat I get waiting for device
Click to expand...
Click to collapse
you need to install fastboot drivers twice, once before you run the omap4fastboot and again after running it when you see that mirrored fastboot text
i Was on JB V20A and i installed the root and the CWM and try to put cwm. to check if bootloader was still locked well it does.
and now im stock on L9 Security error.
i can enter on S/W and tryin using the "UpTestEX_mod2_marwin" the Window enabler and the Http.exe to flash it but.
i try phone mode CS_emergency and emergency but when it start to check the phone it stuck on 15% and i can turn on the phone (thats the way i used to bypass the 15% and get with the instalation)
so what now? i can enter on S/W and Recovery Mode LG (This mode is for data backip at service center. after reboting press power key to keep using phone), still can do hard reset pressing volumen less home and power but nothing happen keep with the error.
i know while the phone turn on there's a solution.
my phone is L9 p768g
just don't view the post and ignore. :/
TY for all the view and the 900000 helps. nvm i solved ty to my fb L9 friends so... jodan
Jctatis said:
TY for all the view and the 900000 helps. nvm i solved ty to my fb L9 friends so... jodan
Click to expand...
Click to collapse
I have the same situation, may I know what your solution is?
twinwoods said:
I have the same situation, may I know what your solution is?
Click to expand...
Click to collapse
This case is very simple to solve. When you try to install a custom recovery with your bootloader locked, the phone system detects it and give you a message of an error in security, like in your case. To solve this, you'll need to reflash your rom. By doing this, the KDZ will reflash the original recovery and you will be able to access your phone/recovery again.
Step by step:
1. You need to install fastboot drivers: http://forum.xda-developers.com/showthread.php?t=2119090
Turn off the phone and remove the battery. Download THIS and exctract it to C:/. Open device manager in windows (Rigt click on Computer > Manage > Device manager) and connect your phone without the battery to pc via USB cable. Look in device manager for a new hardware connected, right click on it and click in update drivers. In the window open, select "Search for software driver in the computer" and in the window open select insert C:\fastboot\usb_drv_windows, tick the option "include subfolders" and advance. A pop up window may appear asking you if you do want to install the driver, choose YES and the drivers will install.
2. Navigate to the folder you extracted (C:/fastboot) and double click on start.bat. It will ask you for administrator privileges, just say yes.
3. Select your phone model (2 for P760, 3 for P765, 4 for P768 and 5 for P769). It will ask you to turn off your phone and remove battery. When you done with that, press enter. It will now ask you to insert USB cable with the phone without the battery and after 4 seconds re-insert the battery. Onde you done with that, it wil return a message to press any key. In this step the fastboot drivers may be installed again. Don't worry, it's normal
4. Remove the battery again, wait a few seconds and re-insert it.
5. Plug the USB cable in the phone with the battery in and let VOL UP pressed. The phone will enter in SW Update mode.
6. Follow THIS to reflash your rom. A list of avaiable official roms of different models is HERE. Remember to only flash roms made for your phone model or you may get some issues.
7. You're all done I recommend using THIS TWEAK, the phone becomes more responsive.
*** If you flashed a JellyBean rom (V20X.kdz) you can easily root with THIS and if you want CWM recovery use THIS ONE ------ REMEMBER NOT TO FLASH ANY CUSTOM ROM WITH THIS RECOVERY BECAUSE I'M CONSIDERING YOUR BOOTLOADER IS LOCKED AND FOR THIS REASON, YOU CANNOT FLASH CUSTOM ROMS WITH CWM, IT JUST DOESNT WORK!!!
Hope it help you
It works!!
shucrut said:
This case is very simple to solve. When you try to install a custom recovery with your bootloader locked, the phone system detects it and give you a message of an error in security, like in your case. To solve this, you'll need to reflash your rom. By doing this, the KDZ will reflash the original recovery and you will be able to access your phone/recovery again.
Step by step:
1. You need to install fastboot drivers:
Turn off the phone and remove the battery. Download THIS and exctract it to C:/. Open device manager in windows (Rigt click on Computer > Manage > Device manager) and connect your phone without the battery to pc via USB cable. Look in device manager for a new hardware connected, right click on it and click in update drivers. In the window open, select "Search for software driver in the computer" and in the window open select insert C:\fastboot\usb_drv_windows, tick the option "include subfolders" and advance. A pop up window may appear asking you if you do want to install the driver, choose YES and the drivers will install.
2. Navigate to the folder you extracted (C:/fastboot) and double click on start.bat. It will ask you for administrator privileges, just say yes.
3. Select your phone model (2 for P760, 3 for P765, 4 for P768 and 5 for P769). It will ask you to turn off your phone and remove battery. When you done with that, press enter. It will now ask you to insert USB cable with the phone without the battery and after 4 seconds re-insert the battery. Onde you done with that, it wil return a message to press any key. In this step the fastboot drivers may be installed again. Don't worry, it's normal
4. Remove the battery again, wait a few seconds and re-insert it.
5. Plug the USB cable in the phone with the battery in and let VOL UP pressed. The phone will enter in SW Update mode.
6. Follow THIS to reflash your rom. A list of avaiable official roms of different models is HERE Remember to only flash roms made for your phone model or you may get some issues.
7. You're all done I recommend using THIS TWEAK , the phone becomes more responsive.
*** If you flashed a JellyBean rom (V20X.kdz) you can easily root with THIS and if you want CWM recovery use THIS ONE ------ REMEMBER NOT TO FLASH ANY CUSTOM ROM WITH THIS RECOVERY BECAUSE I'M CONSIDERING YOUR BOOTLOADER IS LOCKED AND FOR THIS REASON, YOU CANNOT FLASH CUSTOM ROMS WITH CWM, IT JUST DOESNT WORK!!!
Hope it help you
Click to expand...
Click to collapse
Thank you so much. Yes my P769 BOOTLOADER definitely is locked and I can't even root it with all methods provided in xda, I use exactly your method to get my L9 back to life -- although I have to flash it back to original stock but at least it's BACK! Thank you so much. I saw some other people have the same issue but they can't make it work, hopefully your answer shed the light to ALL!
security error just use the lg pc suite and remove the lines or the host put recover via recovery and put your imei and it will start to download the stock Rom
send from cursed G-P768g 4.1.2. PanamÃ
grupo Facebook L9 latino América: https://m.facebook.com/groups/54638...ity&actorid=1381295152&__user=100001612362905
Thank you soo much!!! you seriously saved me.
shucrut said:
This case is very simple to solve. When you try to install a custom recovery with your bootloader locked, the phone system detects it and give you a message of an error in security, like in your case. To solve this, you'll need to reflash your rom. By doing this, the KDZ will reflash the original recovery and you will be able to access your phone/recovery again.
Step by step:
1. You need to install fastboot drivers: http://forum.xda-developers.com/showthread.php?t=2119090
Turn off the phone and remove the battery. Download THIS and exctract it to C:/. Open device manager in windows (Rigt click on Computer > Manage > Device manager) and connect your phone without the battery to pc via USB cable. Look in device manager for a new hardware connected, right click on it and click in update drivers. In the window open, select "Search for software driver in the computer" and in the window open select insert C:\fastboot\usb_drv_windows, tick the option "include subfolders" and advance. A pop up window may appear asking you if you do want to install the driver, choose YES and the drivers will install.
2. Navigate to the folder you extracted (C:/fastboot) and double click on start.bat. It will ask you for administrator privileges, just say yes.
3. Select your phone model (2 for P760, 3 for P765, 4 for P768 and 5 for P769). It will ask you to turn off your phone and remove battery. When you done with that, press enter. It will now ask you to insert USB cable with the phone without the battery and after 4 seconds re-insert the battery. Onde you done with that, it wil return a message to press any key. In this step the fastboot drivers may be installed again. Don't worry, it's normal
4. Remove the battery again, wait a few seconds and re-insert it.
5. Plug the USB cable in the phone with the battery in and let VOL UP pressed. The phone will enter in SW Update mode.
6. Follow THIS to reflash your rom. A list of avaiable official roms of different models is HERE. Remember to only flash roms made for your phone model or you may get some issues.
7. You're all done I recommend using THIS TWEAK, the phone becomes more responsive.
*** If you flashed a JellyBean rom (V20X.kdz) you can easily root with THIS and if you want CWM recovery use THIS ONE ------ REMEMBER NOT TO FLASH ANY CUSTOM ROM WITH THIS RECOVERY BECAUSE I'M CONSIDERING YOUR BOOTLOADER IS LOCKED AND FOR THIS REASON, YOU CANNOT FLASH CUSTOM ROMS WITH CWM, IT JUST DOESNT WORK!!!
Hope it help you
Click to expand...
Click to collapse
I tried this method and the offline kdz method and here is the trouble I am having.
1. With this method I do everything perfect the device shows up for a couple seconds then it disappears so I cannot go any further.
2. With the offline fix I followed the OP to the letter and when I get to the part where I click on "normal web upgrade" I open it and start the upgrade as stated in the OP and nothing. I get the retry or cancel internet warning and ignore or close it and it will not even try pushing the file.
Anyway I have tried 2 different machines to no avail I am wondering if anyone has had a similar problem and fixed it?
Sent from my GT-I9505G using Tapatalk 2
Didn't work for me! But I tried another method and that saved me from a lot of steps.
Just install the driver and the latest LGMobile Support Tool
Start your phone in Software upgrade mode... Power + Vol up
In the LGMobile Support Tool click on Options and then Upgrade Recovery
Put your IMEI in the option that pops up
Wait for the miracle!
It worked for me ... NO MORE LG SECURITY ERROR
MJHawaii said:
I tried this method and the offline kdz method and here is the trouble I am having.
1. With this method I do everything perfect the device shows up for a couple seconds then it disappears so I cannot go any further.
2. With the offline fix I followed the OP to the letter and when I get to the part where I click on "normal web upgrade" I open it and start the upgrade as stated in the OP and nothing. I get the retry or cancel internet warning and ignore or close it and it will not even try pushing the file.
Anyway I have tried 2 different machines to no avail I am wondering if anyone has had a similar problem and fixed it?
Sent from my GT-I9505G using Tapatalk 2
Click to expand...
Click to collapse
Fixed my phone too. I removed lookout permanently and my phone stopped functioning, so I did the method u said and worked great, I got scared but it worked. Lookout is installed again, I can root again and uproot if I want, it works great again. I recommend this method to all
Sent from my LG-P769 using xda app-developers app
it worked! thanks!
the easiest!!
Owadel said:
Didn't work for me! But I tried another method and that saved me from a lot of steps.
Just install the driver and the latest LGMobile Support Tool
Start your phone in Software upgrade mode... Power + Vol up
In the LGMobile Support Tool click on Options and then Upgrade Recovery
Put your IMEI in the option that pops up
Wait for the miracle!
It worked for me ... NO MORE LG SECURITY ERROR
Click to expand...
Click to collapse
i think this is the easiest method to get back to your "last working condition".. i mean nothng got deleted, nothng chnged.. i'm happy to get rid of the "security error" condition!! thanks a lot
shucrut said:
This case is very simple to solve. When you try to install a custom recovery with your bootloader locked, the phone system detects it and give you a message of an error in security, like in your case. To solve this, you'll need to reflash your rom. By doing this, the KDZ will reflash the original recovery and you will be able to access your phone/recovery again.
Step by step:
1. You need to install fastboot drivers: http://forum.xda-developers.com/showthread.php?t=2119090
Turn off the phone and remove the battery. Download THIS and exctract it to C:/. Open device manager in windows (Rigt click on Computer > Manage > Device manager) and connect your phone without the battery to pc via USB cable. Look in device manager for a new hardware connected, right click on it and click in update drivers. In the window open, select "Search for software driver in the computer" and in the window open select insert C:\fastboot\usb_drv_windows, tick the option "include subfolders" and advance. A pop up window may appear asking you if you do want to install the driver, choose YES and the drivers will install.
2. Navigate to the folder you extracted (C:/fastboot) and double click on start.bat. It will ask you for administrator privileges, just say yes.
3. Select your phone model (2 for P760, 3 for P765, 4 for P768 and 5 for P769). It will ask you to turn off your phone and remove battery. When you done with that, press enter. It will now ask you to insert USB cable with the phone without the battery and after 4 seconds re-insert the battery. Onde you done with that, it wil return a message to press any key. In this step the fastboot drivers may be installed again. Don't worry, it's normal
4. Remove the battery again, wait a few seconds and re-insert it.
5. Plug the USB cable in the phone with the battery in and let VOL UP pressed. The phone will enter in SW Update mode.
6. Follow THIS to reflash your rom. A list of avaiable official roms of different models is HERE. Remember to only flash roms made for your phone model or you may get some issues.
7. You're all done I recommend using THIS TWEAK, the phone becomes more responsive.
*** If you flashed a JellyBean rom (V20X.kdz) you can easily root with THIS and if you want CWM recovery use THIS ONE ------ REMEMBER NOT TO FLASH ANY CUSTOM ROM WITH THIS RECOVERY BECAUSE I'M CONSIDERING YOUR BOOTLOADER IS LOCKED AND FOR THIS REASON, YOU CANNOT FLASH CUSTOM ROMS WITH CWM, IT JUST DOESNT WORK!!!
Hope it help you
Click to expand...
Click to collapse
cant install fastboot drivers windows 10
I decided early this week that i want to have a custom ROM on my phone, so i followed this guide http://forum.xda-developers.com/showthread.php?t=2277639 and i managed to get the eu kdz with root (hex edited bin) on my phone so I will be able to unlock the bootloader, so after waiting half an hour as instructed, I typed the command adb reboot oem-unlock but the phone just booted normally and i didn't see the prompt for unlocking the bootloader, so i thought that maybe it was because i didn't have the T-Mobile radio installed, so I installed the recovery installer and clicked install recovery, and it said install successful, but when i hit reboot recovery it just booted normally and did not boot into recovery, and when going back into the app when the boot was completed i noticed that it said recovery not installed.
now just to make things easier with the whole mirrored mess, i thought that installing the touch drivers for my P769 might help, so i followed these instructions
enter the following commands but before you must put the v6.bin file to your external sd card it is in the downloaded files after you have put it to the root
of your external sd card enter the following commands
"cd c:\Android"
"adb shell"
"su" when you enter this go to your phone and accept the su request
"cat /sdcard/external_sd/v6.bin > /sys/devices/virtual/input/lge_touch/firmware"
after you entered the last command you need to close that command promt and open
another one and type the following commands
"cd c:\Android"
"adb shell"
"su"
"reboot" then it will reboot and the touch will corectly work remember the mirrored problem will continue
Click to expand...
Click to collapse
but i guess that was meant only for the T-Mobile kdz and not for the EU one that i had installed because when i rebooted the phone the touch screen wasn't working at all.... so i thought just to flash back the original T-Mobile kdz and then flash the touch drivers again, but i couldn't change the usb mode to software mode since the touch screen isn't working, and when going into SW update mode by pressing vol up and connecting the usb, the update process stops at 15% saying my phone isn't connected...
so at this point i pretty much gave up in root i just want my phone to work normally again... :crying:
can someone please tell me what to do to get the touch working, or some other way to get back to the T-Mobie kdz?
THANKS:laugh:
Please some help...
Sent from my Evo 3D CDMA using Tapatalk 4
aryehzev said:
Please some help...
Sent from my Evo 3D CDMA using Tapatalk 4
Click to expand...
Click to collapse
1. Please read http://forum.xda-developers.com/show....php?t=2411265
or
2. Use LG mobile support tool to recover your phone
- Boot you phone in S/W upload mode. To do this, turn off your phone, take off battery, hold down vol- button while re-connect ubs cable wait about 5-8 sec. After S/W update screen appear insert you battery. (You may need to install LG usb driver first)
- Open LG mobile support. (if it's not installed, search for it and download from lg site, http://tool.xcdn.gdms.lge.com/client...2CAppSetup.exe)
- LG mobile support should show your phone info
- Select Customer Support > Recover
- And wait for program to download and flash your phone (1 - 2 hours)
artit said:
1. Please read http://forum.xda-developers.com/show....php?t=2411265
or
2. Use LG mobile support tool to recover your phone
- Boot you phone in S/W upload mode. To do this, turn off your phone, take off battery, hold down vol- button while re-connect ubs cable wait about 5-8 sec. After S/W update screen appear insert you battery. (You may need to install LG usb driver first)
- Open LG mobile support. (if it's not installed, search for it and download from lg site, http://tool.xcdn.gdms.lge.com/client...2CAppSetup.exe)
- LG mobile support should show your phone info
- Select Customer Support > Recover
- And wait for program to download and flash your phone (1 - 2 hours)
Click to expand...
Click to collapse
Will it know i have a p769 even if i have a p760 rom on the phone?
Sent from my Evo 3D CDMA using Tapatalk 4
aryehzev said:
Will it know i have a p769 even if i have a p760 rom on the phone?
Sent from my Evo 3D CDMA using Tapatalk 4
Click to expand...
Click to collapse
I think it read phone IMEI to verify which rom to load so it should work.
artit said:
I think it read phone IMEI to verify which rom to load so it should work.
Click to expand...
Click to collapse
i know the old version has the customer support option, but the new one doesnt and it automatically updates on start up.
So I recently wanted to load a custom rom on my p769.
Unfortunately, I tried to flash a rom without actually having the bootloader unlocked (thought i did?)
Now i'm forever stuck at the "LG Security Error" screen.
I can't seem to do anything else! :'(
The only other mode I can boot into is S/W update screen (holding volume up and plugging in usb cable).
I tried to get to another mode I read about (vol up + vol down then plug usb cable for "download" mode, to no avail)
Anyway, once I do get it into sw update mode, I can't seem to do anything either way, when i try to list adb devices, none are listed, when i try to use lg mobile tool, it never connects, when i try to use kdz offline update tool, it doesn't see the phone, it just keeps trying to connect, the log freaks out at "_IsConnectedPhone Call", and just keeps trying to "connect" to phone but can't
Am I totally screwed here?
What can I do? Any help appreciated!
rotatorkuf said:
So I recently wanted to load a custom rom on my p769.
Unfortunately, I tried to flash a rom without actually having the bootloader unlocked (thought i did?)
Now i'm forever stuck at the "LG Security Error" screen.
I can't seem to do anything else! :'(
The only other mode I can boot into is S/W update screen (holding volume up and plugging in usb cable).
I tried to get to another mode I read about (vol up + vol down then plug usb cable for "download" mode, to no avail)
Anyway, once I do get it into sw update mode, I can't seem to do anything either way, when i try to list adb devices, none are listed, when i try to use lg mobile tool, it never connects, when i try to use kdz offline update tool, it doesn't see the phone, it just keeps trying to connect, the log freaks out at "_IsConnectedPhone Call", and just keeps trying to "connect" to phone but can't
Am I totally screwed here?
What can I do? Any help appreciated!
Click to expand...
Click to collapse
You're on JB, right? KDZ offline flash tool cannot detect phone in JB. you have to flash ICS x-loader/u-boot then that tool can detect your phone. please visit http://forum.xda-developers.com/showthread.php?t=2292828
For LG mobile support tool problem, it need to download rom from LG server. Have you remove/comment 1-2 line that you add to hosts file? You said it never connect that mean it don't see your phone?
artit said:
You're on JB, right? KDZ offline flash tool cannot detect phone in JB. you have to flash ICS x-loader/u-boot then that tool can detect your phone. please visit http://forum.xda-developers.com/showthread.php?t=2292828
For LG mobile support tool problem, it need to download rom from LG server. Have you remove/comment 1-2 line that you add to hosts file? You said it never connect that mean it don't see your phone?
Click to expand...
Click to collapse
I've tried this as well, but I don't know if i'm doing it correctly
I installed the 'drivers' it needs (following the readme file) when it shows the "unknown/other" device (the part where you have to catch it in device manager).
After this, I run the start.bat, enter 5 and hit enter, i unplug my phone and hit any key, then i plug it in as it says and it does it's thing, then i wait for 4 seconds when it begins to say "waiting for device", i put my battery in and it just stays there, waiting for device
Can you help me figure this out? Am I doing something wrong?
rotatorkuf said:
I've tried this as well, but I don't know if i'm doing it correctly
I installed the 'drivers' it needs (following the readme file) when it shows the "unknown/other" device (the part where you have to catch it in device manager).
After this, I run the start.bat, enter 5 and hit enter, i unplug my phone and hit any key, then i plug it in as it says and it does it's thing, then i wait for 4 seconds when it begins to say "waiting for device", i put my battery in and it just stays there, waiting for device
Can you help me figure this out? Am I doing something wrong?
Click to expand...
Click to collapse
Please read these three link
http://forum.xda-developers.com/showpost.php?p=44578108&postcount=34
http://forum.xda-developers.com/showpost.php?p=44653501&postcount=55
http://forum.xda-developers.com/showpost.php?p=43642515&postcount=21
kuma82 said:
Please read these three link
http://forum.xda-developers.com/showpost.php?p=44578108&postcount=34
http://forum.xda-developers.com/showpost.php?p=44653501&postcount=55
http://forum.xda-developers.com/showpost.php?p=43642515&postcount=21
Click to expand...
Click to collapse
i think i'm making some progress, thanks for helping so far!
anyway, i'm able to get fastboot on my phone (i think?), the screen on the phone shows the flipped LG logo and at the top right it says 2.0 fastboot (flipped of course)
but, what am i supposed to do here?
i see the 2 omap devices listed on my device manager
whenever i try to run the kdz offline flash tool (if i'm using the right one), it still doesn't detect the phone as connected, doesn't even try, just errors and tells me to connect to usb port and restart or exit
what am i supposed to do once i'm in fastboot recovery for my phone?
should i comment out the 2 listings i added to the hosts file? should i NOT be running shttps app? which kdz offline flash tool should i be using? (currently trying: UpTestEX_mod2_marwin.exe)
rotatorkuf said:
i think i'm making some progress, thanks for helping so far!
anyway, i'm able to get fastboot on my phone (i think?), the screen on the phone shows the flipped LG logo and at the top right it says 2.0 fastboot (flipped of course)
but, what am i supposed to do here?
i see the 2 omap devices listed on my device manager
whenever i try to run the kdz offline flash tool (if i'm using the right one), it still doesn't detect the phone as connected, doesn't even try, just errors and tells me to connect to usb port and restart or exit
what am i supposed to do once i'm in fastboot recovery for my phone?
should i comment out the 2 listings i added to the hosts file? should i NOT be running shttps app? which kdz offline flash tool should i be using? (currently trying: UpTestEX_mod2_marwin.exe)
Click to expand...
Click to collapse
You should run start.bat and select flash ICS u-boot/x-loader for P769
When it finish, reboot you phone to S/W update mode and try to use UpTestEX_mod2_marwin.exe to flash your P769 kdz again to restore your phone.
Maybe I miss something about P769 model, please search in FAQ forum many people have this issue, and most of them have fixed it.
artit said:
You should run start.bat and select flash ICS u-boot/x-loader for P769
When it finish, reboot you phone to S/W update mode and try to use UpTestEX_mod2_marwin.exe to flash your P769 kdz again to restore your phone.
Maybe I miss something about P769 model, please search in FAQ forum many people have this issue, and most of them have fixed it.
Click to expand...
Click to collapse
you guys are awesome!
finally got my phone back on rooted firmware
now to unlock the bootloader
Good evening, I have in my hands a smartphone lg p778g does not pass me the logo to light following a simple copy of the folder whatsapp internal memory to the microsd (it was blocked after you copy and to restart it and did not initiate more ... it stays in the LG logo when turned on and there does not pass.
I tried to hard reset with vol (+ or -) buttons + home + power but rather than get out the menu of recovery I get the doll android slept with a triangle exclamation and there is no way to enter the menu that tightening no buttons.
Then I looking for information online found the utility tool flash, did all the steps as marked, I installed the drivers perfectly, the PC detects me the phone without problems, but always in the middle of the update (put the mobile mode s / w upgrade ) 50% program lg cancel the process by saying that there has been an unknown error and try try again by disconnecting and connecting the mobile, but no way, I give retry to to try again and again it hangs at 50% and I jump the error screen again.
I wonder if there is some other program where you can do the hard reset this phone than by the official LG utility, or by microsd.
The operating system used is Windows 7 64-bit, disable the Windows firewall and antivirus and run as administrator utility tool flash lg 2014, but always the same. I also tried running the utility lg mobile support tool directly to you directly seeking the most updated for lg p778g firmware, but it's the same as using the lg flash tool 2014, the 50% of the upgrade stops and gives me the message error.
A greeting and I hope you can help me, I need the phone !!
We'd need someone with a p778g. The problem may be be caused by the special branding of the phone, or an encrypted bootloader. Or the internal flash got completely cleared, partitions and baseband rom, which means a full brick. Otherwise flashing stock in D/L mode should work, even if anything else fails. But this goes mainly for LGs official tool working online. With the LG Flash Tool 2014 i had also problems.
I think both tools have to ways to perform the unbricking. Either with the phone put in D/L mode by the user (if Fastboot don't work on the PC), or by recognizing the phone (but with a still running system) via ADB, then auto-switching to Fastboot. And you should also be able to attach the phone when it's already in Fastboot mode. The latter methods don't work on both my systems under Win10. When my desktop pc had been upgraded to 8.1, i performed all servicing of the L9 with my netbook, which was still on Seven.
My last unbrick was months ago, and i don' t know what happens at 50%. It's something important, and knowing it may help to understand the nature of the problem(loss of contact between phone and pc before the actual process starts, errors during flashing...).
It could be like this:
-phone seems to get recognized by driver&tool, that is good
-image gets downloaded(only with the official tool)
-image gets temporarily extracted on the pc(both online and offline). I fear that by completing the extraction the 50% mark is reached, and that no actual writes to the phone can be performed.
And LG's stock recovery, which calls itself "service mode" or "s/w mode" can be mistaken for D/L mode. I'm talking about the D/L mode, which is also present with a custom recovery, but theoretically D/L mode, S/W mode and Fastboot could be used for unbricking
lecorbusier said:
We'd need someone with a p778g. The problem may be be caused by the special branding of the phone, or an encrypted bootloader. Or the internal flash got completely cleared, partitions and baseband rom, which means a full brick. Otherwise flashing stock in D/L mode should work, even if anything else fails. But this goes mainly for LGs official tool working online. With the LG Flash Tool 2014 i had also problems.
I think both tools have to ways to perform the unbricking. Either with the phone put in D/L mode by the user (if Fastboot don't work on the PC), or by recognizing the phone (but with a still running system) via ADB, then auto-switching to Fastboot. And you should also be able to attach the phone when it's already in Fastboot mode. The latter methods don't work on both my systems under Win10. When my desktop pc had been upgraded to 8.1, i performed all servicing of the L9 with my netbook, which was still on Seven.
My last unbrick was months ago, and i don' t know what happens at 50%. It's something important, and knowing it may help to understand the nature of the problem(loss of contact between phone and pc before the actual process starts, errors during flashing...).
It could be like this:
-phone seems to get recognized by driver&tool, that is good
-image gets downloaded(only with the official tool)
-image gets temporarily extracted on the pc(both online and offline). I fear that by completing the extraction the 50% mark is reached, and that no actual writes to the phone can be performed.
And LG's stock recovery, which calls itself "service mode" or "s/w mode" can be mistaken for D/L mode. I'm talking about the D/L mode, which is also present with a custom recovery, but theoretically D/L mode, S/W mode and Fastboot could be used for unbricking
Click to expand...
Click to collapse
If i was you:
1) Enter in bootload mode using LELUS Method
2) Flash a TWRP 3.0.2 recovery
3) In TWRP recovery format all partitions
4) Install a custom rom
5) Enjoy