Database Develop

problem in updating

hi
i was updating my phone with standard method with lg program.. (without downloading kdz file separately)
but an error occurred in 15% , " ..
"problem communication between cell and phone"
and my phone has locked in s/w upgrade mod and don't turn on.. even if i put the battery off and insert it again it turn on , in s/w upgrade mod...
please help..

If it's still at 15 % it shouldnt even have started flashing U are lucky so to say
Just pull out USB and battery, wait a few seconds and restart. Then try to install the latest drivers, maybe run it as admin or another PC if available.
If it's stuck in bootloop, try emergency recovery in B2C tool (LG update tool), or read in my noob how to, how to unbrick devices.
Also this thread needs to be in Q&A

I was using 64bit PC and had the same problem then I used another PC and the problem was gone

Had the same problem. Resolved using emergency recovery in LG tool, but using another pc.
Sent from my LG-P970 using XDA

bricked my lg o4x.... please Help...

Hello,
i was trying to unlock my bootloader...i tried everything... my lg is euro-xxx
after a hundred attempts there was an error message every time i tried to boot from the bootloader ; [security error] boot image signature..
i tried to fix it flashing the original bootloader from the ''all in one tool''.. nothing happened.. and because i am a stupid noob i thought that a factory reset might re-wright this and restore it to its previous state... and guess what.. it didn't! and now my phone is dead. Even when i connect it via usb (it doesn't matter if it is the wall charger or the pc) the phone keeps looping to that error message....
please help me, i am desperate....:crying:

just after the first post there was a very fortunate turn of events!!!...at least that's what i think... when i connected my phone to the pc the loop in the bootloader stopped and there is a charging indicator instead.. is there anyone who can tell me if there is a way to fix my poor lg? i only have it for a week.......

if it is triing to update it can loop, try to remove the battery

What did you do to unlock your bootloader?

pandar3 said:
Hello,
i was trying to unlock my bootloader...i tried everything... my lg is euro-xxx
after a hundred attempts there was an error message every time i tried to boot from the bootloader ; [security error] boot image signature..
i tried to fix it flashing the original bootloader from the ''all in one tool''.. nothing happened.. and because i am a stupid noob i thought that a factory reset might re-wright this and restore it to its previous state... and guess what.. it didn't! and now my phone is dead. Even when i connect it via usb (it doesn't matter if it is the wall charger or the pc) the phone keeps looping to that error message....
please help me, i am desperate....:crying:
Click to expand...
Click to collapse
Did you root your phone first?
The same problem happened to me when i tried unlocking the bootloader however i just kept on restarting my device and it worked for me; try to turn on the phone by only using the charger. Also keep tapping the power button while the phone is turning on (try everything, i dont know if it will work for you but it just worked for me).
If you manged to turn on your phone use the LG PC Suite to do an Emergency recovery, this will reset your phone. Then i unlocked the boot loader first before rooting the phone use cmd instead of the all in one program.
there are yt videos on how to do this but i am a new user iam not able to post them

help
someone please help me, i was actualizano my lg 4x through lg mobile support tool gave me an error and now enceindo not in any way if sw or anything only when I connect it to my pc recognizes it as apx device. please help.racke

[LG-Security] Error: Boot Image Signature!

Hi
I've been reading all the topics in here and trying many methods, but now im desperate, so i dediced to post here
When i try to run my phone the red text appears: [LG-Security] Error: Boot Image Signature!
I've tried to run http://forum.xda-developers.com/showthread.php?p=35971349 this guide, but when i plug off my battery i cannot get into s/w upgrade in my p880.
When the battery is plugged in I can run s/w upgrade, but my computer doesn't see the device.
Is the phone bricked?
Can i do anything to ressurect it?
EDITroblem solved - still don't know how, but after 5000th reboot it is just working without any other bugs etc...

it's bricked, you tried to install custom recovery without unlocking bootloader?
you can revive it using that tutorial. leave the battery in in order to get to s/w upgrade screen, but before that, you need drivers (and if your computer isn't detecting it in s/w mode, the drivers aren't installed)

It seems that you didn't install the proper drivers on your PC as it doesn't recognize it.
Sent from my LG-P880 using XDA Premium 4 mobile app

Yes, your device is (soft)bricked, and yes, you should be able to recover it. Try the LGMobile Support Tool. Run the tool and plug in your phone while holding down the volume down button (with or without battery). If it doesn't see your device, make sure you have all the latest drivers for your device installed. You can find them on LG's website. Then, try again and once found you'll have to force an update. You can find that option somewhere in the top right menu's. Then be patient.
I seriously doubt whether you have properly searched the forum, or Google for that matter, though..
Sent from my Nexus 7 using xda app-developers app

Thank you for your help
As I mentioned - my phone somehow works...
I don't know how,why and what happend, but it just works...
I've tried to get the system back via lg tool, tried to install new kdz (didn't work, coz my phone was not recognized by computer)
Anyway - thank you again, and sorry for the time you lost

[Q] How to unbrick my 4X - a question of life and death!

I have half-bricked P880. Bought just a week ago.
My ROM is stock V10C. I’m trying to get rid of that crap ROM, but so far without success.
I have rooted the phone but flashify is the only app saing that the phone is not rooted. Every other app which requires root is normally working. I can’t unlock the bootloader because phone can’t be recognized by any computer, using different Windows, USB cables etc. It just shows charging but PC doesn’t see any connected device. Nor the phone shows any connection option when I connect it to PC by USB.
I’ve tried to install TWRP (without success) and CWM (successfully) but the phone can’t be load into bootloader. Just an LG logo will appear and this error message:
[LGE_SECURITY ERROR] boot image signature
Critical failure: Unable to start kernel
Unrecoverable bootloader error (0x00000002)
I think it’s still locked.
This method hasn’t help either…
http://forum.xda-developers.com/showthread.php?t=2251407
What’s more, the error message appears almost every time I try to turn on the phone. Sometimes it takes 10 attempts until the phone will finally boot into Android.
Yes I’ve tried basic things like playing with USB debug mode, LG PC suite option/USB tethering… please don’t respond to my question by that kind of suggestions, I’m no rookie in flashing roms and Android problems.
Only hope for me is to flash kdz file via PC (when the phone is off and battery out). BUT I’m unable to do that, due to problem that the phone is again NOT RECOGNIZED by PC. Of course I've tried every kind of LG driver but the problem is in the phone, because the PC won’t even notify by sound that a phone has been connected to it. So I need to change the corrupted bootloader… somehow.
I’ve already searched everything to this issue on XDA and elsewhere - without any solution. So I’m 95% the phone is half-bricked without any chance to flash new ROM.

If none of those things that you said doesnt work, as last resort you should try this
http://forum.xda-developers.com/optimus-4x-hd/general/s-stuck-rescue-ultimate-rescue-guide-t3012444

Thank you for a quick reply! However the autor of the method says:
i mean when you get stucked with S/W screen, and you can't flash the device in any way
Click to expand...
Click to collapse
In my case I can't say that I'm stuck with S/W screen. Because I don't even get in there. Any PC in my home (XP/Windows 7) don't even recognize that a mobile has been connected to it. So there is no S/W screen. The only way I can get in S/W screen is to keep the battery in, but it doesn't solve anything. Because the phone remains unrecognized to PC. Therefore I'm unable to flash anything. A simple explanation in here arose: the USB port in my phone is faulty. BUT, how that can be, when the USB charging works fine and even S/W screen appears while the battery is in?
Either way I'll keep your suggestion as the final solution(since I'm very skeptical of it and also dont have screwdriver small enought to take out those tine srews) if there will be no other responce to my problem.

I'm not very experienced in things like this, but when I was flashing kdz to my phone, my computer wasn't able to recognize the phone with battery out, so I did whole process with battery in (and it worked)
anyway if you want to unlock the bootloader you have to update to official JB (just flash JB kdz and then wipe data in LG recovery to prevent bootloop)
so first you have to connect somehow your phone in sw mode to computer
then flash JB kdz and wipe data in LG recovery (it should be back even if you've flashed twrp)
and finally root JB and unlock bootloader (for example this way I found by two clicks here at xda, just browse Optimus 4x general category: http://forum.xda-developers.com/showthread.php?t=2251407 )
I hope I helped you a bit

I agree with you SuperLamic. Especially with this:
so first you have to connect somehow your phone in sw mode to computer
Click to expand...
Click to collapse
My only hope is to flash kdz file using fastboot mode. However after days of searching on XDA, installing all kinds of drivers, trying different methods etc., I'm still unable to connect my phone to PC.
Any PC I tryied so far haven't even made a sound while pluging my LG to it. Nor it's vissible in the list of connected USB devices.
So now I'm sure that a USB port on my phone is faulty There is no other possible explanation. But thank you all for your suggestions anyway.
P.S.
There is maybe a tiny chance for workaround by unlocking the bootloader without PC. But this method doesn't work. http://forum.xda-developers.com/showthread.php?t=2251407 With unlocked bootloader I woud be able to solve the problem without PC. Right now I can't install TWRP nor CWM because they require bootloader to be unlocked. CWM in ROM Manager always says that installation was successful but actualy, it wasn't. Since there is always this error when I try to load recowery mod...
[LGE_SECURITY ERROR] boot image signature
Critical failure: Unable to start kernel
Unrecoverable bootloader error (0x00000002)
EDIT:
So I find out that only JB ROMs can be unlocked. It's not possible with my stock ICS. So there is really only one solution: repair my USB port on LG to flash kdz. But I'm afraid that these days a repair will cost more than the phone itself :[

moto x hard brick

i was on lineage os, but after that i flash stock firmware 5.1 thrgh command prompt. all done well and device booted after that i got security patch upadate 2016. while installing that update in recovey mode my phone goes off. after that i cant boot mobile i think its hard brick. i am unable to open bootloader too. tried all key combination but nothing happn when i connect phone to pc no devices detected but somtimes green light blink. on phone. i have installed all driver i.e adb and motorola and qualcomn one. but unable to detect device on pc . anyone know solution plz hlp meee. my devices is xt1052 retail asia

manoj3101 said:
i was on lineage os, but after that i flash stock firmware 5.1 thrgh command prompt. all done well and device booted after that i got security patch upadate 2016. while installing that update in recovey mode my phone goes off. after that i cant boot mobile i think its hard brick. i am unable to open bootloader too. tried all key combination but nothing happn when i connect phone to pc no devices detected but somtimes green light blink. on phone. i have installed all driver i.e adb and motorola and qualcomn one. but unable to detect device on pc . anyone know solution plz hlp meee. my devices is xt1052 retail asia
Click to expand...
Click to collapse
You cant install that update while you were using roms, check videos about to revive the moto x from hard brick

YedanyXD said:
You cant install that update while you were using roms, check videos about to revive the moto x from hard brick
Click to expand...
Click to collapse
found one video but when he connect device somthing like hqsusb appers. but in my case nothing happn when i cnnt device to pc. if u find any hlpful video plz provide me link