Database Develop

[SOLVED][ERROR] Device stuck on boot! Error: Boot Image Signature

Guys,
I'm relatively new to flashing recovery and ROMs..
So, sorry if this is a noob question..
I really need urgent help!
I am on V20a (ESA-XXX) and have successfully rooted my phone.
I tried installing CWM using this method..
http://forum.xda-developers.com/showthread.php?t=2180138
I used the unsecure boot provided by gordon0001
http://forum.xda-developers.com/showthread.php?p=39918805&highlight=unsecure#post39918805
After i restarted my phone, it got stuck at boot!!
Its gives the following error and turns of in 5 seconds..
[LG-Security] Error: Boot Image Signature!
The phone doesn't start and does not go into recovery either..
The phone is not even recognised by my PC.. keeps restarting (to error screen) if i connect to pc..
Please, someone help me.. I'm really scared.. I don't want to lose my phone.. :crying:
I read a similar prob, but no solution found..
http://forum.xda-developers.com/showthread.php?t=2223697
PLEASE HELP!!
SOLUTION:
Reflash .kdz via Software Upgrade Mode (hold Power button and Volume - )

Dude, reflashing your phone should work. As long as SW mode is still accessible, your phone isn't dead yet. Follow the instructions on this post http://forum.xda-developers.com/showthread.php?p=35971349 Be freaking sure all necessary drivers are properly installed.
Or you can put your phone in recovery mode (power + vol +) and reinstall the stock rom using recovery LG tools providing your Internet connection is fast and stable
Sent from my LG-P880 using Tapatalk 2

hey dude, i have flashed 7 times exactly since this morning only. and i have gotten that error 3 times of those 7. so it should not be a problem

Thanks!
After a few attempts, was able to go to the s/w upgrade mode.. (power + vol(-) )
Reflashed .kdz and it's all good.. (had to root again)
Actually, i was freaked out more coz it's my new phone and i didn't find others with the problem..
I hope that this thread would help if anyone faces a similar problem in the future..
Thanks for the prompt response, guys!

TechnoBraker said:
After a few attempts, was able to go to the s/w upgrade mode.. (power + vol(-) )
Reflashed .kdz and it's all good.. (had to root again)
Actually, i was freaked out more coz it's my new phone and i didn't find others with the problem..
I hope that this thread would help if anyone faces a similar problem in the future..
Thanks for the prompt response, guys!
Click to expand...
Click to collapse
You don't read a lot, right?...
If I had 100€ for each user that had that same problem...
(thinking about 1€, hummm?... of course not, 100's better)

TechnoBraker said:
Guys,
I'm relatively new to flashing recovery and ROMs..
So, sorry if this is a noob question..
I really need urgent help!
I am on V20a (ESA-XXX) and have successfully rooted my phone.
I tried installing CWM using this method..
http://forum.xda-developers.com/showthread.php?t=2180138
I used the unsecure boot provided by gordon0001
http://forum.xda-developers.com/showthread.php?p=39918805&highlight=unsecure#post39918805
After i restarted my phone, it got stuck at boot!!
Its gives the following error and turns of in 5 seconds..
[LG-Security] Error: Boot Image Signature!
The phone doesn't start and does not go into recovery either..
The phone is not even recognised by my PC.. keeps restarting (to error screen) if i connect to pc..
Please, someone help me.. I'm really scared.. I don't want to lose my phone.. :crying:
I read a similar prob, but no solution found..
http://forum.xda-developers.com/showthread.php?t=2223697
PLEASE HELP!!
SOLUTION:
Reflash .kdz via Software Upgrade Mode (hold Power button and Volume - )
Click to expand...
Click to collapse
But WHY AND HOW did it happen? have you flashed a custom rom now without errors?

GeBoe said:
But WHY AND HOW did it happen? have you flashed a custom rom now without errors?
Click to expand...
Click to collapse
You needed to unlock bootloader first, either "adb reboot oem-unlock" or download terminal emulator, root the phone and type:
su
echo 40000000c8 > /sys/firmware/fuse/odm_reserved
Sent from my rooted P880

I solved the problem flashing back to stock rom.
From this page http://lg-phone-firmware.com/ you may download your original stock rom.
WARNING: IF YOU FLASHED YOUR PHONE WITH A CUSTOM ROM, NEVER TRY TO FLASH BACK TO AN ORIGINAL STOCK ROM.

askinkoc said:
I solved the problem flashing back to stock rom.
From this page http://lg-phone-firmware.com/ you may download your original stock rom.
WARNING: IF YOU FLASHED YOUR PHONE WITH A CUSTOM ROM, NEVER TRY TO FLASH BACK TO AN ORIGINAL STOCK ROM.
Click to expand...
Click to collapse
And once again:
flashing stock is not at all dangerous. it will not brick your device or something else.
Sometimes you even have to re-stock your phone.

Stock is safe!
askinkoc said:
I solved the problem flashing back to stock rom.
From this page http://lg-phone-firmware.com/ you may download your original stock rom.
WARNING: IF YOU FLASHED YOUR PHONE WITH A CUSTOM ROM, NEVER TRY TO FLASH BACK TO AN ORIGINAL STOCK ROM.
Click to expand...
Click to collapse
haha, flashing the stock rom back can never be a problem..
that is the only rom which inherently supposed to be problem-free!

@non4 said:
You needed to unlock bootloader first, either "adb reboot oem-unlock" or download terminal emulator, root the phone and type:
su
echo 40000000c8 > /sys/firmware/fuse/odm_reserved
Sent from my rooted P880
Click to expand...
Click to collapse
just tried this ^^^ worked thanks
Had the exact same problem as TechnoBraker however if you held the power button as the phone turned to "power save" and you timed it perfectly it would start normally and as long as i didnt try to go into recovery mode it was fine

Hello. PLEASE, can anyone help me, I have a LG 4x and I've tried to flash CWM image from here http://forum.xda-developers.com/showthread.php?t=2298420 but I cannot entry after that in Software Update ( Volume - and Power button) and not even with (Volume + Home and Power Button). I get this error [LGE _SECURITY]error: boot image signature
[LGE _SECURITY]5 seconds after power is turned off for power saving
My phone start very well, I can talk from him but I can not make Factory Reset and flash back the stock rom.
Sorry for my english and I hope someone can help me!
Thank you!

alexxutzu said:
Hello. PLEASE, can anyone help me, I have a LG 4x and I've tried to flash CWM image from here http://forum.xda-developers.com/showthread.php?t=2298420 but I cannot entry after that in Software Update ( Volume - and Power button) and not even with (Volume + Home and Power Button). I get this error [LGE _SECURITY]error: boot image signature
[LGE _SECURITY]5 seconds after power is turned off for power saving
My phone start very well, I can talk from him but I can not make Factory Reset and flash back the stock rom.
Sorry for my english and I hope someone can help me!
Thank you!
Click to expand...
Click to collapse
you installed cwm without unlocking bootloader. re-flash 20a/20b (jellybean 4.1.2) kdz, then unlock your bootloader, then install any custom recovery you want/need

Have i go bak to JB anytime?
Flying_Bear said:
you installed cwm without unlocking bootloader. re-flash 20a/20b (jellybean 4.1.2) kdz, then unlock your bootloader, then install any custom recovery you want/need
Click to expand...
Click to collapse
HEy
I have a question:
Have I flash to JB back anyway or can I only Unlock my BL and then it will work?
Sry my English is very bad

mivoe99 said:
HEy
I have a question:
Have I flash to JB back anyway or can I only Unlock my BL and then it will work?
Sry my English is very bad
Click to expand...
Click to collapse
Bootloader unlocking is only available if you're on JB. If your boot image is faulty you need to revert back to official JB.
Sent from my LG-P880 using XDA Premium 4 mobile app

Ok, but I haven't installed a cousom ROM
Omario-242 said:
Bootloader unlocking is only available if you're on JB. If your boot image is faulty you need to revert back to official JB.
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I havent' installed a cusotm ROM yet. I have only installed CWM with ROM Manager, but i have already tried to delete the CWM I want to flash it manual.
My ROM is the normal LG P880 ROM JB.
How or have I go back to the normal JB?
Sry for my English I'm german

mivoe99 said:
I havent' installed a cusotm ROM yet. I have only installed CWM with ROM Manager, but i have already tried to delete the CWM I want to flash it manual.
My ROM is the normal LG P880 ROM JB.
How or have I go back to the normal JB?
Sry for my English I'm german
Click to expand...
Click to collapse
German here too
So if I understood you right, you tried to install CWM without unlocking your boot loader? So now you got a boot image error? I'd suggest to try LG Mobile Support Tool and flash V20A/V20B and then unlock Boot loader. Even if you're on "official JB" as of now, installing CWM without unlocked bootloader screwed your boot image and there's no way to do anything without flashing back a kdz.
Sent from my LG-P880 using XDA Premium 4 mobile app

LG Mobil Support Tool doesn't work
Omario-242 said:
German here too
So if I understood you right, you tried to install CWM without unlocking your boot loader? So now you got a boot image error? I'd suggest to try LG Mobile Support Tool and flash V20A/V20B and then unlock Boot loader. Even if you're on "official JB" as of now, installing CWM without unlocked bootloader screwed your boot image and there's no way to do anything without flashing back a kdz.
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Hey,
I have tried to do the Update to the Firmware by LG Mobile Support Tool but there is a Error every try. I have tried it about ten times but the Update fails every time. What can I do now? :/
There is no Error Code or something.
Can help a factory reset there?
Or should i falsh the Original Recovery with the All-in-One toolkit?

mivoe99 said:
Hey,
I have tried to do the Update to the Firmware by LG Mobile Support Tool but there is a Error every try. I have tried it about ten times but the Update fails every time. What can I do now? :/
There is no Error Code or something.
Can help a factory reset there?
Or should i falsh the Original Recovery with the All-in-One toolkit?
Click to expand...
Click to collapse
Could be due to wrong drivers. Reinstall them and try again.
Sent from my LG-P880 using XDA Premium 4 mobile app

Reinstalled Drivers
Omario-242 said:
Could be due to wrong drivers. Reinstall them and try again.
Sent from my LG-P880 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Hey,
I have reinstalled the drivers for my device, but the installation failed again.
What can I do else? :/

Help bootlooping

I had originally Cm 10.1 on my phone with stock kernel. But i thought i would flash the stock rom back on using the lg support tool. Using the recovery mode. It installed but now phone is stuck bootlooping. PLZ help

SAMVREMIX said:
I had originally Cm 10.1 on my phone with stock kernel. But i thought i would flash the stock rom back on using the lg support tool. Using the recovery mode. It installed but now phone is stuck bootlooping. PLZ help
Click to expand...
Click to collapse
Force the phone into recovery and wipe the cache.

SimonTS said:
Force the phone into recovery and wipe the cache.
Click to expand...
Click to collapse
Tried it but nothing

SAMVREMIX said:
Tried it but nothing
Click to expand...
Click to collapse
[TUTORIAL]Update firmware through flashing the kdz files( With Picture )Step by Step
Follow that procedure. Works perfectly if you follow the steps right.

tried the steps a couple of times now my phone wont even boot up at all just the three capacative buttons on the bottom light up

SAMVREMIX said:
tried the steps a couple of times now my phone wont even boot up at all just the three capacative buttons on the bottom light up
Click to expand...
Click to collapse
No animation or smoething like that? Maybe you're f***ed...

[Q] Phone stuck on boot animation

Okay, so basically my LG Optimus 4X is stuck on the boot logo. I've tried many things (pulling the battery, factory reset via recovery, and LG support tool which wouldn't connect) but nothing seems to work. My phone is currently rooted and recently had CWM but I restored my phone and got rid of it. I don't know what to do so any help would be appreciated.
P.S. My phone software is p88020c ame-xxx

Blitzkrieg1321 said:
Okay, so basically my LG Optimus 4X is stuck on the boot logo. I've tried many things (pulling the battery, factory reset via recovery, and LG support tool which wouldn't connect) but nothing seems to work. My phone is currently rooted and recently had CWM but I restored my phone and got rid of it. I don't know what to do so any help would be appreciated.
P.S. My phone software is p88020c ame-xxx
Click to expand...
Click to collapse
is your ADB working and usb debugging enabled?

smonist said:
is your ADB working and usb debugging enabled?
Click to expand...
Click to collapse
Yep. i also forgot to mention that i also recently unlocked the bootloader.

Blitzkrieg1321 said:
Yep. i also forgot to mention that i also recently unlocked the bootloader.
Click to expand...
Click to collapse
I don't know if this is gonna work. Downloaded this some time ago - should be a cwm touch. if you want to - give it a try!
edit: sorry, my fault. this just boots you into the normal bootloader.
Have you tried falshing a stock rom?

smonist said:
I don't know if this is gonna work. Downloaded this some time ago - should be a cwm touch. if you want to - give it a try!
edit: sorry, my fault. this just boots you into the normal bootloader.
Have you tried falshing a stock rom?
Click to expand...
Click to collapse
How would I do this?

did you solve the problem?
By experience I know that the sequence to install CM10, starting from vanilla phone, is:
make sure you have a suitable version of firmware, I used V20 EUR open (can provide more details if needed, but most times you can skip this step)
root phone (I followed http://forum.xda-developers.com/showthread.php?t=2180688)
unlock bootloader with this http://forum.xda-developers.com/attachment.php?attachmentid=1906064&d=1366744634
flash recovery-clockwork-touch-6.0.3.1-p880.img to /dev/block/mmcblk0p1 (some usable instructions here)
put CM10 on the device and install it through clockworkmod
Instructions are very confusionary around, thus I am providing you a list of the steps

[Q] D405N Bootloop - please help me :)

This is the first time I write here, because I do not know. My cell phone is in bootloop. I can not get into cwm and reset the data did not help. SDK does not work - fastboot writes that waits on the device. LG Support tool stops me at 4%(and yes I install LG drivers). I tried almost all tutorials here and neither helped. Does anyone have any idea?
Sorry for my english.

Yazyyk said:
This is the first time I write here, because I do not know. My cell phone is in bootloop. I can not get into cwm and reset the data did not help. SDK does not work - fastboot writes that waits on the device. LG Support tool stops me at 4%(and yes I install LG drivers). I tried almost all tutorials here and neither helped. Does anyone have any idea?
Sorry for my english.
Click to expand...
Click to collapse
What did you do before the bootloop happened?

razoract said:
What did you do before the bootloop happened?
Click to expand...
Click to collapse
I installed Chainfire 3D from the store. Subsequently wanted to restart and I was in bootloop. :/

Yazyyk said:
I installed Chainfire 3D from the store. Subsequently wanted to restart and I was in bootloop. :/
Click to expand...
Click to collapse
Are you on a custom ROM?
You have CWM installed? Why can't you boot into it?
You can always try a to flash KDZ here if nothing works.

razoract said:
Are you on a custom ROM?
You have CWM installed? Why can't you boot into it?
You can always try a to flash KDZ here if nothing works.
Click to expand...
Click to collapse
As I wrote .. I have CWM installed, but it will not let me in there. It always skips. And I had CyanogenMod. KDZ flash I always stop at 4% .. The instructions I tried

Yazyyk said:
As I wrote .. I have CWM installed, but it will not let me in there. It always skips. And I had CyanogenMod. KDZ flash I always stop at 4% .. The instructions I tried
Click to expand...
Click to collapse
People reported being stuck at 4% when they had a corrupted KDZ.
Maybe try downloading the KDZ again and flash it.
Other than that, no idea...

razoract said:
People reported being stuck at 4% when they had a corrupted KDZ.
Maybe try downloading the KDZ again and flash it.
Other than that, no idea...
Click to expand...
Click to collapse
After re-downloading KDZ file still not working..

Solve this problem :d
Yazyyk said:
After re-downloading KDZ file still not working..
Click to expand...
Click to collapse
SOLUTION 100%
press the keys
volume and less power to the LG logo release and immediately press again the keys until check white lettering telling you to format all down with less volume key and click the power button to agree to the choice you're finally in a recovery and you can install CyanogenMod: D
-lg L90 group: D https://www.facebook.com/groups/1414818918778253/

But I wrote that I can not get there. When you confirm 2x so, it appears to me again lg logo. Thats the problem..

solve problem pt2 xD
Yazyyk said:
But I wrote that I can not get there. When you confirm 2x so, it appears to me again lg logo. Thats the problem..
Click to expand...
Click to collapse
Shut down your LG l90
Pressing vol - and connect USB
Enter in bootdownloading
Check tutorial install stock ROM.

DevelopersROMTeam said:
Shut down your LG l90
Pressing vol - and connect USB
Enter in bootdownloading
Check tutorial install stock ROM.
Click to expand...
Click to collapse
Heh I stuck at 4% ...

Yazyyk said:
Heh I stuck at 4% ...
Click to expand...
Click to collapse
Flashing the KDZ does seem to be the only possibility left for you though.. Try installing twrp 2.8.0.0 (can be found in development threads) through adb (while in download mode? turn phone off and connect with volume down pressed) and see if you can flash CM using twrp. Also try to download the flasher again. Did you remove the old folder in the hidden appdata folder as stated in the KDZ tut? Just follow it step by step from the beginning if the twrp thing doesn't work for you, doing a clean download of all the needed files. I've flashed the KDZ many times myself and never had any problems myself, so this is all the advice I can give you..

Stuck on factory reset 2 and get a dload error

So appearently when i tried to flash the unoffical frimware it flashed but rebooted to factory status 2. Now i cant boot into android at all and whenever i try to flash the Anroid M frimware it gives me a _prepareafterDload error 0000054 . Can someone please help me restore it to ethier Lolipop or Marshmallow??

Awesomeslayerg said:
So appearently when i tried to flash the unoffical frimware it flashed but rebooted to factory status 2. Now i cant boot into android at all and whenever i try to flash the Anroid M frimware it gives me a _prepareafterDload error 0000054 . Can someone please help me restore it to ethier Lolipop or Marshmallow??
Click to expand...
Click to collapse
I was also stuck on factory status error 2. You should try TO TOT zv6. The way i was finally able to get things running was first i connected my phone to a different usb slot on my computer.
Then while using the LG flash tool I also switched to Board DL instead of Upgrade DL
your phone will reboot to the AAT Screen – Click OK (Yes, it says not to), then hold down power and press normal boot (+power).
Your phone will reboot and all should be well.

tallblazer124 said:
I was also stuck on factory status error 2. You should try TO TOT zv6. The way i was finally able to get things running was first i connected my phone to a different usb slot on my computer.
Then while using the LG flash tool I also switched to Board DL instead of Upgrade DL
your phone will reboot to the AAT Screen – Click OK (Yes, it says not to), then hold down power and press normal boot (+power).
Your phone will reboot and all should be well.
Click to expand...
Click to collapse
So i can downgrade to zv6 with this one?
Heres the lg flashtool log
http://pastebin.com/T3mpRd8Q
Can someone help me please?

Awesomeslayerg said:
So i can downgrade to zv6 with this one?
Heres the lg flashtool log
http://pastebin.com/T3mpRd8Q
Can someone help me please?
Click to expand...
Click to collapse
I dont think this has been proven yet. I think you will be stuck on android M until a method is figured out. I thought you were just was trying to TOT from zv5 or zv6.

tallblazer124 said:
I dont think this has been proven yet. I think you will be stuck on android M until a method is figured out. I thought you were just was trying to TOT from zv5 or zv6.
Click to expand...
Click to collapse
No i mean i cant get into the android itself it just resets shows the minios logo and then says Factory Reset 2.

Awesomeslayerg said:
No i mean i cant get into the android itself it just resets shows the minios logo and then says Factory Reset 2.
Click to expand...
Click to collapse
If you were on zv5 or zv6 follow my steps in my first post.
Sent from my LGLS991 using Tapatalk

tallblazer124 said:
If you were on zv5 or zv6 follow my steps in my first post.
Sent from my LGLS991 using Tapatalk
Click to expand...
Click to collapse
nada get a _preapreafterdload failed error... Sigh i guess ima have to ship it to lg.. I need it in about 2 weeks..

Can you boot into recovery? If so you may be able to adb sideload a factory image to get function back

danweb66 said:
Can you boot into recovery? If so you may be able to adb sideload a factory image to get function back
Click to expand...
Click to collapse
Do you know what the keys are to access it

Awesomeslayerg said:
Do you know what the keys are to access it
Click to expand...
Click to collapse
With the phone powered off, hold down vol down and power till the screen says recovery.
Sent from my LGLS991 using Tapatalk

Swetnes said:
With the phone powered off, hold down vol down and power till the screen says recovery.
Sent from my LGLS991 using Tapatalk
Click to expand...
Click to collapse
Yeah dosent work looks like recovery is gone as well