[Completed] LG G PAD V400 - Error : boot certification verify - XDA Assist

hello there.
i just updated my lg g pad 7.0 v400 via lg pc suite and after it finished upgrading, it does his restart and it booted into lg logo with an error on the top left side : Error : boot certification verify.
i tried to roll back the update but it does not working
i have to solve that problem because im going to sell the tablet soon :/
The tablet was never rooted before and its version was 5.0.2 Lollipop.
immediate help needed guys.
Thank you

XDA Visitor said:
hello there.
i just updated my lg g pad 7.0 v400 via lg pc suite and after it finished upgrading, it does his restart and it booted into lg logo with an error on the top left side : Error : boot certification verify.
i tried to roll back the update but it does not working
i have to solve that problem because im going to sell the tablet soon :/
The tablet was never rooted before and its version was 5.0.2 Lollipop.
immediate help needed guys.
Thank you
Click to expand...
Click to collapse
Greetings,
Thank you for using XDA Assist.
Please have a loomk at the G Pad homepage:
LG G Pad 8.3
Guides and other helpful information can be found in the General Section.
If you create an XDA account, you can post your questions in the [url=http://forum.xda-developers.com/lg-g-pad-83/help]Q&A Section.
Good luck and welcome to XDA!

The_Merovingian said:
Greetings,
Thank you for using XDA Assist.
Please have a loomk at the G Pad homepage:
LG G Pad 8.3
Guides and other helpful information can be found in the General Section.
If you create an XDA account, you can post your questions in the [url=http://forum.xda-developers.com/lg-g-pad-83/help]Q&A Section.
Good luck and welcome to XDA!
Click to expand...
Click to collapse
Hello there again (i just registerd)
I have the g pad 7.0 v400 and not the g pad 8.3
Im new in that forum and i'de like you to help me solve that problem.. :\
Even if im hard reseting the device its stuck on the factory reset screen for ever, all the Computers that i tried to connect the tablet to them cant recognize the USB drivers that needed, and i cant find any solution to that problem on google ( that's scary )

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[Q] How can I root this tablet?

I have an LG G pad 7.0. It's a pretty new/low end tablet and I haven't found anything on how to root it. If you think it's the same as rooting the G pad 8.3 please confirm it, thanks.
HeavensLastCall said:
I have an LG G pad 7.0. It's a pretty new/low end tablet and I haven't found anything on how to root it. If you think it's the same as rooting the G pad 8.3 please confirm it, thanks.
Click to expand...
Click to collapse
It should be the same as rooting the G Pad 8.3 using one click root here: http://www.oneclickroot.com/phone/lg-g-pad-8-3/
TechMinerUK said:
It should be the same as rooting the G Pad 8.3 using one click root here: http://www.oneclickroot.com/phone/lg-g-pad-8-3/
Hey - Did the one click root worked for you. I also have g pad 7.0 but it didn't work for me
Click to expand...
Click to collapse
Anyone else having a problem connecting to this tablet in ADB?
I have debugging enabled but ADB says offline.
The computer allow prompt never comes up either.
Shows debug mode on tablet/
I got mine friday, rooted my G3 in 20 minutes after getting it but couldn't root my tablet until today. I love this little thing. I used PurpleDrake and it worked like a charm, xposed and titanium backup installed. Time to get to work
http://imgur.com/SJHS9DB
http://imgur.com/bZbqmRQ
http://forum.xda-developers.com/lg-g3/development/root-root-lg-g3-easily-purpledrake-lite-t2821000
if anybody uses reddit i got bored and slapped together a subreddit for the little tablet so any info can be gathered to one spot at least
http://www.reddit.com/r/LGgpad7
Do you have a custom recovery installed yet?
Should be the first to-do when you root so you have a back-up handy in case anything bad happens.
Sent From V500
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Hi,
Thanks for using XDA Assist kindly post here Android Q&A, Help & Troubleshooting.
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Hello people. I live in Uzbekistan (Tashkent). My device is Lg Optimus Gk. Android 5.0.2. My phone has become a brick. Always stop setting and the screen does not go. I want to make a factory reset. Phone writes error loading. Help me please. I can not live without my LG Optimus gk.
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I have this newly bought LG G Pro 2 F350L korean variant... I did rooting and afterwards an OTA update when suddenly it shuts down removing my download mode and it seems i can revive it because download mode was remove...
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I have this newly bought LG G Pro 2 F350L korean variant... I did rooting and afterwards an OTA update when suddenly it shuts down removing my download mode and it seems i can revive it because download mode was remove...
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This will help a lot of LG G Pro 2 users out there....
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Click to collapse
Hello,
Thanks for using XDA Assist.
Moving your thread to G Pro 2 Q&A,Help and Troubleshooting.Experts there may be able to help you.
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XDA Visitor said:
Hey! So i've tried rooting my LG G Flex 2 but it just won't work. I've tried doing the method where u download the LG_Root.zip. That didn't work, i simply got a message saying "Hello, i am LAF, nice to meet you". So i was looking around for other options and tried TWRP, except i can't find any download for the LG G Flex 2. Nothing has worked! Oh, btw; I'm running android 6.0.1, it's LG H955.
Click to expand...
Click to collapse
Hello and welcome to xda-assist,
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