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Boot Certification Verify?

OP wolverine73

24th April 2014, 12:27 PM   |  #1  
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Hi guys, need some help deperately please.

I've got an LG G2 D802 that has received the OTA update to 4.4 and is running fine.

I've since rooted it and i was looking at installing a custom recovery before flashing a new Rom......

I have tried to use Flashify after downloading TWRP recovery through Flashify but after rebooting it comes up with the following in the top left of a black screen;

Error: Boot Certification Verify
810 - secure booting error
860 - cause: boot certification verify

Then the screen goes off, ive left the phone and tried to reboot by just holding down the power button for 10 seconds but on boot i just get the same message then it dissapears and i get a black screen again

Any help or pointers would be great - thanks in advance
24th April 2014, 01:26 PM   |  #2  
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Try going to download mode and flash your kdz.

Sent from my LG-D802 using XDA Premium 4 mobile app
24th April 2014, 01:43 PM   |  #3  
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Quote:
Originally Posted by bender_007

Try going to download mode and flash your kdz.

Sent from my LG-D802 using XDA Premium 4 mobile app

Thankyou for the reply - Any chance you could link or give me a quick tutorial on how to do this please?

I've connected the lg g2 up to my pc via usb and held down volume up and power to get into download mode - i get the screen on the lg with 'Firmware Update' on it and a bar with 0% on it and writing that says "DO not unplug the USB connection until the process is complete.

I've located the kdz for my particular device/model and downloaded it on my pc - how do i flash to my phone from here please - simple step by step instructions would be great thanks!
24th April 2014, 01:58 PM   |  #4  
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Of course. Please read this thread and if any troubles occure write here

P.S. disable Antivirus before proceeding.
24th April 2014, 02:36 PM   |  #5  
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Quote:
Originally Posted by bender_007

Of course. Please read this thread and if any troubles occure write here

P.S. disable Antivirus before proceeding.

Thanks ever so much for your help - my phone is back alive but lost its root! But because the lg g2 is so easy to root its no problem!

Thanks again my friend - you are worth your weight in gold - all the best
24th April 2014, 02:42 PM   |  #6  
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Quote:
Originally Posted by wolverine73

Thanks ever so much for your help - my phone is back alive but lost its root! But because the lg g2 is so easy to root its no problem!

Thanks again my friend - you are worth your weight in gold - all the best

Thank to the thread OP where all the infos are

Sent from my LG-D802 using XDA Premium 4 mobile app
24th April 2014, 02:50 PM   |  #7  
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Quote:
Originally Posted by bender_007

Thank to the thread OP where all the infos are

Sent from my LG-D802 using XDA Premium 4 mobile app

Have done!

Well ive tried to root again using ioroot 25 like i did initially but my phone doesnt like it at all
I get the little green android with the spinning thing on him but it doesnt go any further than that when i run the Windows Batch File - so going to do the whole process again - frustrating to say the least :/
24th April 2014, 02:54 PM   |  #8  
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Quote:
Originally Posted by wolverine73

Have done!

Well ive tried to root again using ioroot 25 like i did initially but my phone doesnt like it at all
I get the little green android with the spinning thing on him but it doesnt go any further than that when i run the Windows Batch File - so going to do the whole process again - frustrating to say the least :/

If you've just flashed the KDZ, do a factory reset instead of just booting to android. (hold volume down + power until you see the lg logo, release for a moment and continue holding the 2 buttons untill the factory reset appears). If you're on the new base with knock on and the ioroot issues the reboot to recovery command it has the same effect, your data is cleared. You have to retry the rooting process (the second time it should work).
24th April 2014, 03:15 PM   |  #9  
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Quote:
Originally Posted by bender_007

If you've just flashed the KDZ, do a factory reset instead of just booting to android. (hold volume down + power until you see the lg logo, release for a moment and continue holding the 2 buttons untill the factory reset appears). If you're on the new base with knock on and the ioroot issues the reboot to recovery command it has the same effect, your data is cleared. You have to retry the rooting process (the second time it should work).

I've finally sorted it out now - on the first flash of the kdz my phone pretty much remained the same, it bought it back to life and it wasnt reset at all and i couldnt root it.

On the second flash of the kdz my phone went through the whole set up process again (enter google account, language etc) and i managed to root easily after that.

It's put me off installing a custom recovery now though Ive expereince with the htc one x, dell streak, zte blade ...... all fine but with this im worried about getting a recovery installed incase i mess up again!

I know there is TWRP recovery and Philz recovery available but using flashify was what got me into this mess - do you suggest i use the usb cable and connect to my pc and install a recovery that way?

Side note - ive downloaded TWRP and Phils recoveries but none of them have a Windows Batch File to run hence me using Flashify - ive put the question on both of those threads aswell - where is the BAT command to run?

Thanks for your help
24th April 2014, 03:28 PM   |  #10  
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Use autorec m8. First root, second download autorec and click flash. Done

Sent from my LG-D802 using XDA Premium 4 mobile app

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