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

TechnoBraker · Apr 19, 2013

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://xdaforums.com/showthread.php?t=2180138

I used the unsecure boot provided by gordon0001
http://xdaforums.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://xdaforums.com/showthread.php?t=2223697

PLEASE HELP!!

SOLUTION:
Reflash .kdz via Software Upgrade Mode (hold Power button and Volume - )

hernestwisnu · Apr 19, 2013

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://xdaforums.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

alekthefirst · Apr 19, 2013

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

TechnoBraker · Apr 19, 2013

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!

RuedasLocas · Apr 19, 2013

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!

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)

GeBoe · Apr 23, 2013

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://xdaforums.com/showthread.php?t=2180138

I used the unsecure boot provided by gordon0001
http://xdaforums.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://xdaforums.com/showthread.php?t=2223697

PLEASE HELP!!

SOLUTION:
Reflash .kdz via Software Upgrade Mode (hold Power button and Volume - )

But WHY AND HOW did it happen? have you flashed a custom rom now without errors?

@non4 · Apr 23, 2013

GeBoe said:
But WHY AND HOW did it happen? have you flashed a custom rom now without errors?

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

askinkoc · May 27, 2013

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.

laufersteppenwolf · May 27, 2013

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.

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.

TechnoBraker · May 28, 2013

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.

haha, flashing the stock rom back can never be a problem..
that is the only rom which inherently supposed to be problem-free!

STRAWBERRYHEAD · Aug 16, 2013

@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

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

alexxutzu · Jan 23, 2014

Hello. PLEASE, can anyone help me, I have a LG 4x and I've tried to flash CWM image from here http://xdaforums.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!

Flying_Bear · Jan 23, 2014

alexxutzu said:
Hello. PLEASE, can anyone help me, I have a LG 4x and I've tried to flash CWM image from here http://xdaforums.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!

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

mivoe99 · Mar 4, 2014

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

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

Omario-242 · Mar 4, 2014

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

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

mivoe99 · Mar 4, 2014

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

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

Omario-242 · Mar 4, 2014

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

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

mivoe99 · Mar 5, 2014

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

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?

Omario-242 · Mar 5, 2014

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?

Could be due to wrong drivers. Reinstall them and try again.

Sent from my LG-P880 using XDA Premium 4 mobile app

mivoe99 · Mar 5, 2014

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

Hey,
I have reinstalled the drivers for my device, but the installation failed again.
What can I do else? :/

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

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