lg pad 8.3 v500 bricked. HELP! - G Pad 8.3 Q&A, Help & Troubleshooting

while trying to flash a rom I clearly went very wrong and bricked my pad, now all I can get is "secure booting error cause :boot certification verify". i think the error code when trying a hard reset was 16420, tablet just keeps going to "secure booting error"ETC ,ETC.
Things I tried,
1 hard reset
2 lg flash
3 lg recovery
4 adb
and others
Cant even get the PC to "see" the tablet ,LG usb drivers installed etc. I have pressed "power and volume" buttons in as many combinations as possible, same result "secure booting error" etc. Only screen I can get is "Hard Factory Reset", but that doesnt work,same result "secure booting error"etc. If I can only get the usb connection going then I might be able to do something (having already sucessfully flashed my s5 to android 7). I am a novice at this so please be gentle, any kind of constructive advice would be greatly recieved

Same problem here, someone please HELP!!!
P

Hi!
This one worked for me, got back to unrooted state
https://forum.xda-developers.com/showthread.php?p=48942830#post48942830
sheetmetal said:
while trying to flash a rom I clearly went very wrong and bricked my pad, now all I can get is "secure booting error cause :boot certification verify". i think the error code when trying a hard reset was 16420, tablet just keeps going to "secure booting error"ETC ,ETC.
Things I tried,
1 hard reset
2 lg flash
3 lg recovery
4 adb
and others
Cant even get the PC to "see" the tablet ,LG usb drivers installed etc. I have pressed "power and volume" buttons in as many combinations as possible, same result "secure booting error" etc. Only screen I can get is "Hard Factory Reset", but that doesnt work,same result "secure booting error"etc. If I can only get the usb connection going then I might be able to do something (having already sucessfully flashed my s5 to android 7). I am a novice at this so please be gentle, any kind of constructive advice would be greatly recieved
Click to expand...
Click to collapse

plambohun said:
Hi!
This one worked for me, got back to unrooted state
https://forum.xda-developers.com/showthread.php?p=48942830#post48942830
Click to expand...
Click to collapse
just tried that, still no joy, can get into download mode with support tool running then click "recovery upgrade" the report comes back with the advice that I already have the latest upgrade and therefore nothing happens! thanks for your reply tho, I was starting to think that nobody cared LOL, dont suppose you know any other tricks to get me out of the creek.

plambohun said:
Same problem here, someone please HELP!!!
P
Click to expand...
Click to collapse
1, try this, go to "G pad 8.3 General" (near top right of page)
2, go to page 2
3, find [Tutorial][KDZ][LP][V500]Korean v30A How to Flash KDZ
4, follow instructions
5, worked for me after hours/days/months of trying
Good luck

sheetmetal said:
just tried that, still no joy, can get into download mode with support tool running then click "recovery upgrade" the report comes back with the advice that I already have the latest upgrade and therefore nothing happens! thanks for your reply tho, I was starting to think that nobody cared LOL, dont suppose you know any other tricks to get me out of the creek.
Click to expand...
Click to collapse
update
just done Flash as per instructions from [Tutorial][KDZ][LP][V500]Korean v30A How to Flash KDZ ,as found on page 2 of "Gpad 8.3 general", worked a charm, I am now a happy man once again, thank you again for your help

Related

Nasty Bootloop after Flash on Sprint G2

Last night I installed geefree on my phone from the app store and used it to install TWRP. I downloaded a nightly CM11 and an appropriate gapps. Using geefree I rebooted to recovery (never figured out the button combination to boot to recovery "naturally") and installed both of the zips. This could be where I made my mistake, I installed both at the same time.
Now my phone loops, displaying the LG logo for a few seconds, then shutting off and rebooting before repeating the process. I can't seem to get it to go into download mode or the recovery menu. I've tried power+up, power+down, down+up and each of those while plugging the device in, etc. I can get the device to a hardware key control mode, though it doesn't seem too useful.
How can I save my phone? This forum has been a great resource in the past and I'm very grateful for the many tutorials I've followed rooting other devices. Hopefully you guys can save the day once again!
Volume up plus power is how to access recovery on sprint.
What stock sw version were you on before you flashed cm?
Did you wipe data before flashing?
Sent from my LG-LS970 using xda app-developers app
I was using stock 4.2.2, I believe. I didn't wipe the data (shame on me), a bad habit that I picked up from my first rooted device, the Samsung Moment. It didn't ever matter on that one, afaik. Thanks for the reply!
Edit: Volume up and power whether plugged in or not takes me to the hardware key control mode screen.
Second Edit: http://forum.xda-developers.com/showthread.php?t=2432476&page=35 I also found this thread where someone seems to be experiencing similar issues and they fix it with "LG Utility." Is that a PC application? It's a little vague to google, but I've been trying!
I have a bootloop issue every time i flash a rom i have to wipe all but sd flash roms and gapps the i do a restore from twrp and oly restore my boot image only and they boot no prob
I'm kind of starting to suspect my power button doesn't work at all for whatever reason. I have a lot of difficulty getting the phone to shut down, then it doesn't seem to easily power up. It's a strange collection of problems. Would a Sprint repair place be able to fix this?
If they have parts on hand if not either a swap out or a sendoff
Same problem here - bootloop and no download mode - CWM works! - urgently need help
I guess I have the same problem as InlineFourPower (apart from that my power-button has no problem).
I am stuck in bootloop since I tried to upgrade to Kitkat a few days ago. Now I can´t get into download mode any more, nor into fastboot or anything else. Only CWM works.
From within CWM I can successfully flash ROMs but that doesn´t help, since afterwards I am still stuck in bootloop. It is possible, however, to push files via adb-commands while I am in CWM.
Does anybody have an idea how to go from here or how to get download-mode back?
Device is recognized but can´t be mounted - bricked forever?
Parinibbana said:
I guess I have the same problem as InlineFourPower (apart from that my power-button has no problem).
I am stuck in bootloop since I tried to upgrade to Kitkat a few days ago. Now I can´t get into download mode any more, nor into fastboot or anything else. Only CWM works.
From within CWM I can successfully flash ROMs but that doesn´t help, since afterwards I am still stuck in bootloop. It is possible, however, to push files via adb-commands while I am in CWM.
Does anybody have an idea how to go from here or how to get download-mode back?
Click to expand...
Click to collapse
I tried a few things on Linux.
After terminal-command "ls /dev/sd*" when the device is unplugged from the computer I get "/dev/sda".
When the device is connected via USB, I get: "/dev/sda /dev/sdb"
So sdb is my LG G2.
So I went on to the next command: "gdisk -l /dev/sdb"
As a result I get: "Problem opening /dev/sdb for reading! Error is 123."
Does it mean that the phone isn´t mounted or what? Now I´ve connected my phone to another Linux machine with the same result. It is recognised (p.e. as sdd), but there is no sdd1. Seems as if it is recognized, but can´t be mounted. Does that mean my device is bricked for good? That´s it?
to get the phone into download mode you have to plug the usb cord in and hold VOL+, so to get this right as I have a case on mine, plug the usb into the phone first then hold VOL+ and plug into usb port on the computer.
it does take a loooong time to power down the phone with the button when stuck in a boot loop, just keep holding it until it shuts off, it will shut off eventually!!
plug the phone in while in download mode to install drivers and set com ports, then unplug before you begin your flash with LGFlashTool, hope this helps you out.
Cronic2009 said:
to get the phone into download mode you have to plug the usb cord in and hold VOL+, so to get this right as I have a case on mine, plug the usb in first then hold VOL+ and plug into usb port.
it does take a loooong time to power down the phone with the button when stuck in a boot loop, just keep holding it until it shuts off, hope this helps
Click to expand...
Click to collapse
Thanks Cronic2009 for your advice.
There are, however, szenarios where download-mode is not accessible any more. Neither by using the hardware-keys, nor by using the adb-command.
After four days of resarch and a lot of trial and error, I finally unbricked my F320L using the two adb-commands outlined at the beginning of that thread: http://forum.xda-developers.com/showthread.php?t=2451696
Worked like a charm.
Thanks everyone for your advice.
no problem buddy, glad you got it figured out, good luck to you from here on out!
FYI, that link doesn't work
I just wanted to ask anyone who might know, since the bootloader of the LS980 is locked, we cannot "break" this correct, so no matter what commands we decide to run through root, we cant touch the true bootloader there for LS980 fail safe? (Besides Acts of God, EMP, ect)
Cronic2009 said:
no problem buddy, glad you got it figured out, good luck to you from here on out!
Click to expand...
Click to collapse
Thanks for letting me know. I corrected the link in my previous post.
Be sure if you use a aosp based rom to flash the ZV8 modem. Your can use dr87 or furnance kernals after you flash the zva modem althought i have encountered soft brick due to this.
so i'm having this exact issue and i don't know how to get out of it. i just need to transfer the radio to my phone somehow but nothing shows up under adb devices. i'm trying to the lg mobile support tool now. its downloading the software. but if it doesn't work does any one have any fixes?
edit: i fixed it by following this http://forum.xda-developers.com/showthread.php?p=51637410&highlight=download+fail#post51637410
pitbullmommy45245 said:
so i'm having this exact issue and i don't know how to get out of it. i just need to transfer the radio to my phone somehow but nothing shows up under adb devices. i'm trying to the lg mobile support tool now. its downloading the software. but if it doesn't work does any one have any fixes?
edit: i fixed it by following this http://forum.xda-developers.com/showthread.php?p=51637410&highlight=download+fail#post51637410
Click to expand...
Click to collapse
Thank You for sharing you fixed your issue pittbullmommy but the link you posted points back to a post about a failed run on LGFlashTool, will you please fix the link and point it to the post/guide you used to fix your phone, it may help others stuck in a similar situation, glad to hear you got it fixed and working, best of luck with it from here on out!
Hi all
was just about to start a new thread but didn't want to get into trouble..anyway I am in need of some assistance please.my ls980 has been bricked for some time now been searching all over the internet for a solution to be stuck back at square one.found this video on youtube which is pretty much exactly what my phone is doing.I have used lg flash tool to revert to stock and still nothing I lost root doing that but last night,I managed to regain root access I have no idea how but it happened when i clicked ioroot batch file i went into download mode and it stated bottom left ROOTED in red so i managed that but that is it still doing what is being shown in the video its on youtube
watch?v=PjLF-pBhZSY
please if anyone has the know how I would like to fix this phone rather then bin it thank you all happy 4th everyone
After using tot and flash tool to get back to stock, did you try going into stock recovery and do a factory data reset? I know it sounds stupid especially after a tot but try it. Couldn't hurt
Sent from my LG-LS980 using Tapatalk
Borderline noob here, so please bear with me...
I have been using TWRP 2.7.0.0 to do all my work, and I was able to get the Lego ROM installed with ZVA. I got into too big of a hurry and forgot to make a backup of stock. I've also been unsuccessful in trying to install ZVC modem and firmware. Thankfully ZVA works as does the LEGO ROM, but I'd like to have stock there to access as well. The stockZVC that's on the Android Development page has been getting stuck (bootloop?) on the Sprint Spark logo. I've done TWRP's factory reset with no success. Any help would be great.
Thanks in advance!
Yes sir I've tried that and more to no avail is there anything I can do through adb I'm on stock recovery phone doesn't stay on long enough to install anything
sarfdawg said:
Borderline noob here, so please bear with me...
I have been using TWRP 2.7.0.0 to do all my work, and I was able to get the Lego ROM installed with ZVA. I got into too big of a hurry and forgot to make a backup of stock. I've also been unsuccessful in trying to install ZVC modem and firmware. Thankfully ZVA works as does the LEGO ROM, but I'd like to have stock there to access as well. The stockZVC that's on the Android Development page has been getting stuck (bootloop?) on the Sprint Spark logo. I've done TWRP's factory reset with no success. Any help would be great.
Thanks in advance!
Click to expand...
Click to collapse
You ever get her fixed?

[Q] Fail root on Optimus G E977

Hello everyone, i have used this site for root another phones on past but now i can't understand how to fix my problem by myself. Thats why i'm here to kindly ask(beg) for help.
I tryed to root the phone, first i used the Framaroot, i thought it worked but look likes not, i'm getting the Secure booting Error! Couse: boot certification verify.
Ok, looks not a big deal, lots of guys got it and solved their problems with this post. But now is where i ask sorry because i couldn't make it.
I can enter on dowload mode, i tried all the steps on the post and did not worked. I need a light.
When i used the KDZ_FW, i got a message of error on extrating file.
When i tryed make a Recovery Hard Reset, i got the message Secure booting Error! Couse: boot certification verify.
When i try to turn it on by pressing the power + volumerdown = nothing happen.
I have a Optimus G E977, and the software was the E97710d.
Thanks for the attention.
http://forum.xda-developers.com/showpost.php?p=45355871&postcount=1
Question 5. I know it's hard to read before..i see things didn't changed around since i left. I see same lazy people,rushing into things before looking around....pffff....
Maybe U can help me too.
Everything was fine with my OG but problems start when installing CM11. I decided to go back to stock later (I did it) but then couldnt be able to enter recovery or download mode. I tried several methods like re root, unlock again and lately using ROM Manager and trying to install another recover all get screwed up. Only black screen. Trying and trying I could install KDZ firmware
So then I root, unlock boatloader with method one from here: http://forum.xda-developers.com/showthread.php?t=2667398
Ok i dont know if boatloader is unlocked now but i know I cant enter recovery or download mode. Im afraid to use freegee to try to unlock again.
What should I do.
Thanks
kimitza said:
http://forum.xda-developers.com/showpost.php?p=45355871&postcount=1
Question 5. I know it's hard to read before..i see things didn't changed around since i left. I see same lazy people,rushing into things before looking around....pffff....
Click to expand...
Click to collapse
kimitza said:
http://forum.xda-developers.com/showpost.php?p=45355871&postcount=1
Question 5. I know it's hard to read before..i see things didn't changed around since i left. I see same lazy people,rushing into things before looking around....pffff....
Click to expand...
Click to collapse
I appreciate your intention to help, maybe its because i'm a Braziliam guy, with not the best english, that i can't figure how to use the FREEGEE app if i can't start the cellphone.
Thanks again.
OBS: I have used that app too before get this error. And was just becouse tryed to enter on recovery mode that i got that message.
I understand that your celphone cant turn on or enter download mode or recovery?
If thats your situation maybe I can help U (I think)
Fuguets said:
I appreciate your intention to help, maybe its because i'm a Braziliam guy, with not the best english, that i can't figure how to use the FREEGEE app if i can't start the cellphone.
Thanks again.
OBS: I have used that app too before get this error. And was just becouse tryed to enter on recovery mode that i got that message.
Click to expand...
Click to collapse
Well, i'll try to explain all to not get missunderstood.
My situation is, without the USB cable the celphone don't respond to any button press.
With USB cable, by the momment that i plug it, the screen shows the error message.
With the USB cable and in the error message screen, i can press the volume buttons +- and power, after that the phone restart and shows the download mode.
What i know so far is, if i can enter download mode, and here is your words, all is not lost.
Knowing that, all solutions i found on this site doesn't work with me. Or, what is possible, i didn't make it right.
The phone do not enter on recovery mode.
I gess this is all. For now
Thanks for the patience to teach who needs to be teached.
ErnestoD said:
I understand that your celphone cant turn on or enter download mode or recovery?
If thats your situation maybe I can help U (I think)
Click to expand...
Click to collapse
My previous problem was far worst than yours.
I recommend U to uninstall all LG stuff from your PC and follow this guide: http://www.htcmania.com/forumdisplay.php?f=1026
Its in spanish so I think U wont have much problem
I did it yestesrday and save me. Whit it U will install a new KDZ firmware, even if it is bigger than 1GB
Good luck
QUOTE=Fuguets;51799238]Well, i'll try to explain all to not get missunderstood.
My situation is, without the USB cable the celphone don't respond to any button press.
With USB cable, by the momment that i plug it, the screen shows the error message.
With the USB cable and in the error message screen, i can press the volume buttons +- and power, after that the phone restart and shows the download mode.
What i know so far is, if i can enter download mode, and here is your words, all is not lost.
Knowing that, all solutions i found on this site doesn't work with me. Or, what is possible, i didn't make it right.
The phone do not enter on recovery mode.
I gess this is all. For now
Thanks for the patience to teach who needs to be teached.[/QUOTE]
As I see, if i'm looking for the guide you are refering, of install the original rom, is the same one that i already tried and i got message error of extract file.
I deleted all lg stuff from computer, downloaded everything of the guide and the message is the same.
Any more suggestion ?
PS: I prefer english version , at least to read is easy to me.
Edit1:I wonder if the fact of my kdz file be bigger than 1gb causes that ?
Edit2: When i try the guide on this link the step 7 does not show to me, and my phone or some similar does not show on the Usb Controler list to install.
Thanks again
ErnestoD said:
My previous problem was far worst than yours.
I recommend U to uninstall all LG stuff from your PC and follow this guide
Its in spanish so I think U wont have much problem
I did it yestesrday and save me. Whit it U will install a new KDZ firmware, even if it is bigger than 1GB
Good luck
QUOTE=Fuguets;51799238]Well, i'll try to explain all to not get missunderstood.
My situation is, without the USB cable the celphone don't respond to any button press.
With USB cable, by the momment that i plug it, the screen shows the error message.
With the USB cable and in the error message screen, i can press the volume buttons +- and power, after that the phone restart and shows the download mode.
What i know so far is, if i can enter download mode, and here is your words, all is not lost.
Knowing that, all solutions i found on this site doesn't work with me. Or, what is possible, i didn't make it right.
The phone do not enter on recovery mode.
I gess this is all. For now
Thanks for the patience to teach who needs to be teached.
Click to expand...
Click to collapse
[/QUOTE]
I didnt see that on XDA. I used this method with 2 kdz´s, one smaller and another one bigger than 1gb.
Maybe U missed something.
Fuguets said:
As I see, if i'm looking for the guide you are refering, of install the original rom, is the same one that i already tried and i got message error of extract file.
I deleted all lg stuff from computer, downloaded everything of the guide and the message is the same.
Any more suggestion ?
PS: I prefer english version , at least to read is easy to me.
Edit1:I wonder if the fact of my kdz file be bigger than 1gb causes that ?
Edit2: When i try the guide on this link the step 7 does not show to me, and my phone or some similar does not show on the Usb Controler list to install.
Thanks again
Click to expand...
Click to collapse
[/QUOTE]
Now I am really worried about that. I just can't acces the phone by any kind of way.
When i try the Unlock Botloader, it says that didn't found my device.
Now, after restart the computer, it says: The system cannot find the patch specified.
Is there no more options for me ?
The drivers I have downloaded here was automaticly updated from 8.0xx to 10.0xx, I unterstand this is a good thing, am I wrong ?
Could U flash KDZ using the method from htc mania?? (Im using it rigth now with 1.2GB KDZ firmware)
How did U come to that situation?
Fuguets said:
Now I am really worried about that. I just can't acces the phone by any kind of way.
When i try the Unlock Botloader, it says that didn't found my device.
Now, after restart the computer, it says: The system cannot find the patch specified.
Is there no more options for me ?
The drivers I have downloaded here was automaticly updated from 8.0xx to 10.0xx, I unterstand this is a good thing, am I wrong ?
Click to expand...
Click to collapse
I did that, while i use the KDZ one minute after start unpacking the file, it shows the error message and finish the procces. I don't know if is that what you were asking.
When I tried the button Read Phone Information, it tells me Emergency Not Support Batt Level Check.
Is that the problem ?
ErnestoD said:
Could U flash KDZ using the method from htc mania?? (Im using it rigth now with 1.2GB KDZ firmware)
How did U come to that situation?
Click to expand...
Click to collapse
Did U overwrite LGMOBILEAX folder was stated and (step 2). Did U edit hosts file as stated (step 3=
In my case i previously have a black screen, nothing more, but connecting phone to PC while pressing both volum keys aloud PC to recognice the phone.
If U receive extraction error that means that the patch is wrong. Do not press anything more in the program There is no need to
Fuguets said:
I did that, while i use the KDZ one minute after start unpacking the file, it shows the error message and finish the procces. I don't know if is that what you were asking.
When I tried the button Read Phone Information, it tells me Emergency Not Support Batt Level Check.
Is that the problem ?
Click to expand...
Click to collapse
I did not overwrite that folder, maybe we are looking for different guides because if that was something that i supose to do i didn't saw that on the guide.
I did not edit hosts file.
I restarted the computer now again, and now my message is: device not found.
Can you place the link of exacly guide i need to look ? Couse the link you send me before has a various of them.
ErnestoD said:
Did U overwrite LGMOBILEAX folder was stated and (step 2). Did U edit hosts file as stated (step 3=
In my case i previously have a black screen, nothing more, but connecting phone to PC while pressing both volum keys aloud PC to recognice the phone.
If U receive extraction error that means that the patch is wrong. Do not press anything more in the program There is no need to
Click to expand...
Click to collapse
http://www.htcmania.com/showthread.php?t=802175
Remenber to start from zero
Tested on WIN7 64 bits
ErnestoD said:
http://www.htcmania.com/showthread.php?t=802175
Remenber to start from zero
Tested on WIN7 64 bits
Click to expand...
Click to collapse
Helo again, i just finish the proccess now. Again i got the same message, I attached the log file, if you please have a look on that i appreciate.
I don't know, all the problem looks to be batterys fault. I hope not. Thanks.
Edit1: I foun this guide, do you think it could help me ?
But I didn't understand that well, looks like I need to be able to start the OS of the phone, which i can't.
Im sad to hear that , This is beyond my knowledge. It worked for me but...
Fuguets said:
Helo again, i just finish the proccess now. Again i got the same message, I attached the log file, if you please have a look on that i appreciate.
I don't know, all the problem looks to be batterys fault. I hope not. Thanks.
Click to expand...
Click to collapse
ErnestoD said:
Im sad to hear that , This is beyond my knowledge. It worked for me but...
Click to expand...
Click to collapse
What about my edit, where i found that someone said it solve the problem on 15%, do you think it could work ?
I just don't understant well, do I need to be able to start my phone rom ? Or i can do on my situation ?
Hello guys,
I am so happy that I wanted to share this with you. As I still have headache from googling how to flash back your stock rom (which didn't work out because the flash tool gave an error every time at 15%), I can save you a lot of headache with this very very simple fix.
For some people the tool works just fine, but when you have some google bootloader or a newer freegee unlocked one and you want back to stock, lots of people cant follow this thread because of the error at 15%.
The fix is EASY and I found it on the Optimus L9 section, thanks to that guy on XDA.
Follow exactly Davevinci's great thread except for one thing:
http://forum.xda-developers.com/show....php?t=2498102
Step 4 is now:
4.GO TO DOWNLOAD MODE POW+BOTH VOL BUTTON PRESSED+CONNECT USB
But step 4 should be:
- Boot up your phone in any stock based rom, for example SAVVY Rom V5
- Enable USB debugging and connect your phone through USB using the LG PC Suite option (make sure to kill PC suite in tast manager).
Now you should see the driver installation of LGE Android MTP device as usual and then just run the flash tool from the guide. Also de mode DIAG is now the right one. The flashtool will reboot your phone to download mode automatically when it's needed.
Still an error? Don't worry, disable virus scanner and firewall and just reconnect your phone. I got an error one time, during flashing, but I followed the steps the flashtool suggested me and now everything went fine.
Click to expand...
Click to collapse
The link U provide is not working and U didnt upload any log, I didnt see it.
As I read to perform that action u must be able to turn on your phone.
Did U try to flash a smaller then 1gb kdz or try another ones.
As U can see U wont receive to much help in LG forum. There are good guides but on time help is another thing.
Did U try this guide (method 1): http://forum.xda-developers.com/showthread.php?t=2667398
Is your phone properly detected in your PC?
Fuguets said:
What about my edit, where i found that someone said it solve the problem on 15%, do you think it could work ?
I just don't understant well, do I need to be able to start my phone rom ? Or i can do on my situation ?
Click to expand...
Click to collapse
I did not tried with a smaller archive because I can't download it. Among the Brazilian files I only can download the version 10D. I am on phone now but I will send the link that I'm trying asap. I really appreciate your help man. Even that I didn't found the solution yet is nice count with some experience help.
Enviado de meu XT1032 usando Tapatalk
Edit: From this list http://forum.xda-developers.com/showthread.php?t=2093382 , all brazilian links show Access Denied
And from here http://lg-phone-firmware.com/index.php?id_mod=20, only the V10D of Brazil.
I'm looking for the number 16, CLR/CLARO(BRAZIL) which is less than 1GB. Maybe i'm wrong, but when i clic on the name, a page of TNY shows a link of ADFLY that after i clic on close advertisement nothing happen.
About the method 1, I did try that, but sometimes it says "device not found" or "the system cannot find the patch specified". I'll try that from another computer, i let you know if i have some lucky. But the guy of the guide said:
!enable usb debugging
connect as MTP
follow the script"
Maybe its not for me.
Look what happen. (I'm using download mode)
*********************************************
* Tool Unlock BL Optimus G - Update 0414 *
* *
*********************************************
*** Select a number ***
1. UNLOCK BOOTLOADER
Seclect a number : 1
1. [Unlock] Optimus G JB 4.1.2 Selelct
Seclect a number : 1
FreeGee UNLOCK
Thanks to Team Codefire
1. JB 4.1.2
╣Seclect a Number : 1
1. KT
2. SKT
3. LGU+
╣Seclect a number : 1
* daemon not running. starting it now on port 5037 *
* daemon started successfully *
error: device not found
error: device not found
error: device not found
error: device not found
error: device not found
error: device not found
error: device not found
error: device not found
Unlock BL success.
╕Reboot [y]/[n] :
About my phone get propper detected, i guess it is, at least on my devices map it shows "Lg AndroidNet Phone"

G4 Completely Bricked, help needed

Hi all,
After installing some OTA on a stock G4, the phone has itself stuck in a bootloop, where i get a screen: "Security Error, authentication fail #9". I can get to the recovery, where the only option is erase all, but even selecting that goes straight back to the error.
I was hoping i could use fastboot to reset it, but no PC i plug it into (windows and linux) is picking up the device. As in, my windows device manager doesn't even see something new plugged in, and linux lsusb doesn't see a device either, so of course fastboot isn't working. Any ideas? I've done much googling, but couldn't find anyone with the complete set of circumstances i have. I'd prefer to not have to send it back
Cheers,
David
did you root it?
if not, I highly suggest you to send it back than fixing it yourself, as the development of G4 is not yet matured and this *could* be a hardware problem, IMHO.
dgoemans said:
Hi all,
After installing some OTA on a stock G4, the phone has itself stuck in a bootloop, where i get a screen: "Security Error, authentication fail #9". I can get to the recovery, where the only option is erase all, but even selecting that goes straight back to the error.
I was hoping i could use fastboot to reset it, but no PC i plug it into (windows and linux) is picking up the device. As in, my windows device manager doesn't even see something new plugged in, and linux lsusb doesn't see a device either, so of course fastboot isn't working. Any ideas? I've done much googling, but couldn't find anyone with the complete set of circumstances i have. I'd prefer to not have to send it back
Cheers,
David
Click to expand...
Click to collapse
You don't say which model you have, whether you are rooted with a custom recovery, etc. If you WERE rooted with a custom recovery and you took an OTA (intentional or not) you could be screwed until/unless someone finds a way to address it.
...my$.02
you said Stock G4, have you had another countries rom on it and tried to return back to stock, what model is it ie H815....
dgoemans said:
Hi all,
After installing some OTA on a stock G4, the phone has itself stuck in a bootloop, where i get a screen: "Security Error, authentication fail #9". I can get to the recovery, where the only option is erase all, but even selecting that goes straight back to the error.
I was hoping i could use fastboot to reset it, but no PC i plug it into (windows and linux) is picking up the device. As in, my windows device manager doesn't even see something new plugged in, and linux lsusb doesn't see a device either, so of course fastboot isn't working. Any ideas? I've done much googling, but couldn't find anyone with the complete set of circumstances i have. I'd prefer to not have to send it back
Cheers,
David
Click to expand...
Click to collapse
Send the 815 model back
BAD ASS NOTE 4
If you didn't do a full nandroid backup before trying to update, then it's kind of on you
Strange somebody seeking urgent help, and vanished after writing incomplete details. People, pls forget about this thread.
r4Rok said:
Strange somebody seeking urgent help, and vanished after writing incomplete details. People, pls forget about this thread.
Click to expand...
Click to collapse
Yeah I have never understood why some people post mini-rants about needing help so bad but ALWAYS leave the details as murky as possible, logically speaking it just never adds up.
I think you can probably restore via KDZ. Check the appropriate thread and try.
At least you aren't stuck in Qualcomm 9008 like I am, where you have to wait for some kind of LG-only tool to be leaked to restore it.
duraaraa said:
I think you can probably restore via KDZ. Check the appropriate thread and try.
At least you aren't stuck in Qualcomm 9008 like I am, where you have to wait for some kind of LG-only tool to be leaked to restore it.
Click to expand...
Click to collapse
May I ask how you managed to do this and what were you attempting to do when this happened??

Bricked d855 16 GB No download mode

Hey All,
I have searched the forum for this but i dont seem to get the same issue. And i dont want to make things worse, so i post it here. Hope you guys and galls are able to help.
So what happend. I wanted to flash back my G3 d855 16Gb Eur model.
Something allong the way went wrong, and i dont know what. All i know is that when i came back my phone was turned of. And my pc gave a failed message.
Now i cannot get in to download mode anymore. It gives me the LG boot logo and that is it.
When i want to enter download mode i get the download mode logo, with in the top left corner a verification error.
It goes quite fast so i cannot get the exact message. Can anyone point me in the direction of a fix. Ore is it indeed really dead?
Hello and thank you for using Q/A,
if you can't enter the download-mode, your mobile is dead. You may flashed a wrong firmware and the bootloader was overwritten with a wrong device.
Can you enter into Recovery?
Kind regards
Trafalgar Square
Nope, the phone reacts when i connect it to the pc. I get the android bootlogo. And when i power up with volume -, the i get the factory reset options but it dont work.
would the wiretrick help me out ?
Darkje said:
Nope, the phone reacts when i connect it to the pc. I get the android bootlogo. And when i power up with volume -, the i get the factory reset options but it dont work.
Click to expand...
Click to collapse
Can you reboot your phone into recovery mode (If it is already rooted and custom recovery installed).
I also faced a problem like that. In my problem when i reboot into download mode it took me to fastboot mode with 4 to 5 commands on left upper edge. If you can boot into that "fastboot" mode then tell me so i can help you better.
If you can't see anything like above then tell me that too i will try best to help you get out of this problem>>
No I don't get those options.
I get some kind of miss match error
exact error is:
boot verification failed
cause mismatch_sig_len
Hey All,
Just want to let you know, that i have been struggeling with my phone for two weeks. Offcourse not 24/7. But it is back alive. I managed to do the wiretrick and i was able to load up the Qualcom 9008 driver. After a long struggle i even managed to get the phone reconized by board diag. From that on it was easy to flash back all partitions. And download/firmware update mode was back. After this all i was able to flash the KDZ file.
I then lost my IMEI, but i backed up my EFS and all other importend files in the beginning. After rooting and flasing my EFS all was back to normal.
So ... i quess the d855 is indeed unbrickable
Solution
Darkje said:
Hey All,
I have searched the forum for this but i dont seem to get the same issue. And i dont want to make things worse, so i post it here. Hope you guys and galls are able to help.
So what happend. I wanted to flash back my G3 d855 16Gb Eur model.
Something allong the way went wrong, and i dont know what. All i know is that when i came back my phone was turned of. And my pc gave a failed message.
Now i cannot get in to download mode anymore. It gives me the LG boot logo and that is it.
When i want to enter download mode i get the download mode logo, with in the top left corner a verification error.
It goes quite fast so i cannot get the exact message. Can anyone point me in the direction of a fix. Ore is it indeed really dead?
Click to expand...
Click to collapse
It's not english, it is portuguese Brazil, but it works.
youtu.be/watch?v=gHAA5e2FQbU&index=1&list=LLtlXyuPzN6skeex-P2apfrQ
hi, I had this also but I can go to recovery mode but....
dksoni411 said:
Can you reboot your phone into recovery mode (If it is already rooted and custom recovery installed).
I also faced a problem like that. In my problem when i reboot into download mode it took me to fastboot mode with 4 to 5 commands on left upper edge. If you can boot into that "fastboot" mode then tell me so i can help you better.
If you can't see anything like above then tell me that too i will try best to help you get out of this problem>>
Click to expand...
Click to collapse
hi, I had this also but I can go to recovery mode but not download mode.. can you help me? thanks in advance

Phone IS bricked, can't do anything.

First of all, sorry for my english and If i'm wrong it's my first time in xda.
Okay, My lg g3 d855 is bricked.
I can't do hard reset, whenever I try to do hard reset the phone just shuts off.
I tried to flash stock rom through LgFlashtool But it didn't worked, In the middle of process it failed and after that I can't even get to Download Mode.
When I try to boot the phone there is "security error", "verification error" And the phone shuts off after that and there blue and red light in the notification led.
I don't know what else I can do.
How did it happen?
More details please
bender_007 said:
How did it happen?
More details please
Click to expand...
Click to collapse
I didn't do anything with the phone, Suddenly he just turned off, got into bootloop. I tried to do hard reset and it didn't worked as I said.( By this time I managed to go into download mode).
I tried to flash a stock rom for the phone with this guideIt didn't allow to pose this link here...) While I was doing this guide in the middle of the process the phone turned off and flash failed. After that I tried to go to download mode again but It says "security error" "Verification error" and It won't go into download mode now.
Guess @bender_007 gonna give you this LINK
try it
Sent from my LG-D855 using Tapatalk
bender_007 said:
How did it happen?
More details please
Click to expand...
Click to collapse
Hi when I try to extract like in the guide it says "ERROR Max number of partition"
how to fix it ?
Bump
LoadingLevel said:
Hi when I try to extract like in the guide it says "ERROR Max number of partition"
how to fix it ?
Click to expand...
Click to collapse
I have the same error , hope someone can help me with this error too
I am on the same page
Are there any fix to this problem ?

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