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[LG-Security] Error: Boot Image Signature!

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(Last edited by tored; 16th February 2014 at 07:33 PM.)
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Default [LG-Security] Error: Boot Image Signature!

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 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?

EDIT:Problem solved - still don't know how, but after 5000th reboot it is just working without any other bugs etc...
Flying_Bear's Avatar
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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)
To install custom roms on O4x:

1. upgrade to jb
2. root
3. unlock bootloader
4. flash custom recovery (cwm)
5. flash roms
6. if you encounter any issues, search, they've been answered already.

Got issues with RIL/IMEI/BASEBAND on custom 4.2, 4.3 or 4.4 ROMs on p880? Click me for possible solution!
Omario-242's Avatar
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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
|| LG Optimus 4X HD (P880)
|| Android Version 4.4.4 Kitkat
|| Recovery TeamWin Recovery Project
|| Kernel Iodak v10 Beta
|| Rom Version Vanir maintained by Laufersteppenwolf

balloon27's Avatar
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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
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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
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