This is in response to LG AS730 (L7 Variant) Rooting / Unbricking / More, http://forum.xda-developers.com/showthread.php?t=2102104. This was a very helpful thread but it has a broken link for the cab firmware. I have found an easier way to fix the security error anyway. Just follow the first two steps and boot your phone into emergency mode (Vol Down + Up / Then plug in USB) with LG support tool running. Click options, upgrade recovery, and it will ask you for a Serial # / Model or MEID #. It will download the correct stuff (im not an expert), and install it on the phone. Boots right up. The reason i got into this mess was because I un-installed the wrong apps after I rooted. I didn't heed the warnings of others, i think it was chrome but I'm not sure. Anyway I just wanted to put this out there to save some hassles if any one else has done this.
So Long Story,
Monday I Changed Out Battery Go To Restart Phone, Phone Wont Boot Stuck On LG Screens And Constantly Retrying. Tuesday Night I ReInstall Factory Firmware For G3 D852 - With Success - Phone Working. Wednesday I Decide To Root & Install TWRP - With Success - Phone Working No Issues. Today This Is Where Sh*t Hits The Fan! I Get Crazy & Attempt To Install ChupaChups Lollipop Rom With TWRP - Seemingly Successful Install But After Reboot Wont Boot Stuck In Fast Boot. So I Attempt To Resolve This Following Other Forum Posts Using FastBootOV - WITHOUT Success - Now When Attempting To Boot Phone LG Screen Comes Up Top Left Corner Says "ERROR Boot Certification Verify" Below That Says "590 Secure Booting ERROR!" Then Black Screen With Flashing Red & Blue LED. I Attempted To ReInstall Factory Firmware With LG Flashtool Attempt Fails Stating Wrong Model Number - Phone States On Screen Near Bottom Now D855 Ver5.0 Below That D85520A. What Do I Do Now? How To Get Back To D852? Do I Try To Install D855 Firmware? HELP Im Lost & Frustrated :crying:
Thanks
LG G3 D852 Bell Mobility Phone. 32G.
I Just Want To Try A Debloated OS. And Here I Am.
Hi,
I see you found your device section and asked about this there.... Awesome! ?
XDA Assist is here to help navigate the site, not for support.... And you found your way already!
Thank you, thread closed.
Disclaimer as far as experience with playing around with android I am at a pretty basic level. I have tried to follow some guides online about flashing and installing stock factory image but none seem to work for me. Could someone guide me in the right direction for what I might need to do to attempt to fix my device which is unfortunately just out of manufacturers warranty.
Also could this random occurance be a known documented batch manufacturing defect in which case I would be entitled to a legal warranty coverage?
Issue: I found the device turned off one day, when I tried to start it I found that it was in a boot loop where the google logo never went off to continue with normal boot (battery was full).
First instinct was to go to bootloader with the voldown+pwrbutton and launch recovery mode and restore to factory from there.
However, although bootloader launches, when I choose recovery mode and hit power button I am prompted to the google logo and stuck in the same boot loop.
Further details:
I have never modified the software on the device from stock, all settings were on default except that the device was encrypted with password protection.
Software version was latest android 5.x.x (can not check in current device state and I forgot exactly)
Device info from bootloader:
Product name - flo
Variant - flo 32G
Hw version - rev_e
Bootloader version - FL0-04+04
carrier info - None
Serial number - 04d0b343
Signing - yes
Secure boot - enabled (green colour)
Lock state - locked
Hi there,
Here is few discussions about your problem where you can ask directly after register an account on XDA:
Nexus 7 2013 bootloop and black screen in bootloader
Nexus 7 2013 model, bootloop after battery dead
For other questions related to this device please ask here:
Google Nexus 7 (2013) Help and Troubleshooting
Good luck
Hi, I'm not good at english, sorry.
And thank for your help seriously.
I'm using LG G2(LG-F320K) without any kind of customizing(even I didn't turned on USB debugging)
(Now i think that turning off USB Debugging is one of the best mistake that i have ever done )
I didn't touched bootloader, recovery, rom, kernel, and anything else.
(As i said that I even didn't turn on USB Debugging)
3 Days ago, suddenly my G2 is gone(, and i realized that my G2 reboot occasionaly from the day I bought G2.)
After that, When I turn on G2, It boots infinitely
Here's the thing that I tried to unbrick G2
1. Upgrade Recoery through LG Mobile Support Tool
I tried it, but it never works.
It said that it cannot fetch the phone info automatically. Enter more than one info item requested below and press the OK button.
So I entered it, and it seems going well.
But few a minutes later, this tool says "Caution: Primary GPT Partition has an invalid value"
I searche it Google, but google gave no answer except for one Russian Site, and as you expected, the only result has no answer
2.Using KDZ
I found a tool, "LG Flash Tool 2014", and KDZ file for LG-F320K
I launched it by using these options: 3GCQP, Emergency, Normal Flash (to let my data alive)
And same error came out, "Caution: Primary GPT has an invalid value"
I Don't Know What To Do.............
I tried to use other solution but i can't since the solutions totally erase my data in G2
(And I need those data necessarily, can't lose them even if I can't save My G2 from brick)
TOT can't be a solution because it erases my data
Can anyone save my data(or G2) from the error "Caution: Primary GPT Partitioin has an invalid value"??? without losing my data in it?
I asked it many communities but they couldn't give me proper answer.
Thank for your help earlier,
and have a good day
heejuni09 said:
Hi, I'm not good at english, sorry.
And thank for your help seriously.
I'm using LG G2(LG-F320K) without any kind of customizing(even I didn't turned on USB debugging)
(Now i think that turning off USB Debugging is one of the best mistake that i have ever done )
I didn't touched bootloader, recovery, rom, kernel, and anything else.
(As i said that I even didn't turn on USB Debugging)
3 Days ago, suddenly my G2 is gone(, and i realized that my G2 reboot occasionaly from the day I bought G2.)
After that, When I turn on G2, It boots infinitely
Here's the thing that I tried to unbrick G2
1. Upgrade Recoery through LG Mobile Support Tool
I tried it, but it never works.
It said that it cannot fetch the phone info automatically. Enter more than one info item requested below and press the OK button.
So I entered it, and it seems going well.
But few a minutes later, this tool says "Caution: Primary GPT Partition has an invalid value"
I searche it Google, but google gave no answer except for one Russian Site, and as you expected, the only result has no answer
2.Using KDZ
I found a tool, "LG Flash Tool 2014", and KDZ file for LG-F320K
I launched it by using these options: 3GCQP, Emergency, Normal Flash (to let my data alive)
And same error came out, "Caution: Primary GPT has an invalid value"
I Don't Know What To Do.............
I tried to use other solution but i can't since the solutions totally erase my data in G2
(And I need those data necessarily, can't lose them even if I can't save My G2 from brick)
TOT can't be a solution because it erases my data
Can anyone save my data(or G2) from the error "Caution: Primary GPT Partitioin has an invalid value"??? without losing my data in it?
I asked it many communities but they couldn't give me proper answer.
Thank for your help earlier,
and have a good day
Click to expand...
Click to collapse
Greetings,
Thank you for using XDA Assist. Though there isn't a specific forum for your device model number, you should ask your question here:
[HELP THREAD][Noob Friendly] LG G2 Ask any question
The experts in that thread may be able to help you with your issue.
Good luck!
Hi XDA friends.
Am from india. am using LG G3 D858HK model 32gb dual LTE version.
My mobile as bricked last 2 months back Model as LG G3 D858HK Hong Kong version 32GB varient. Actually i mistakenly installed another not compatible Rom(Android operating system) like Cynongenmod 12.1 on this device. so my mobile not working like below symptoms are behaving.
1. display not coming
2. only without battery as showing like not charging no battery inserted display
3. led light as blinking when its i press back power button
4. when i press back power button its showing like 0% battery no charge(when i insert battery)
5. its not displaying download mode( i pressed special keys like top volume +button and power button and inserting USB for installing OS
So its possible to solve this bricked mobile to unbrick (LG G3 D858HK)
above issues are am getting. but i tried to repair my self. when i insert USB it showing in device manager LG Android usb device. not showing qualcomm hsb like. i properly installed QDLoader HS-USB Driver_64bit_Setup. but it below link as per your mentioned my device hardware as been different. so how can i find it GND and EMMC pins ( for short in using copper wire ) in this mobile LG G3 D858hk. actually am already checked in that mother board but i didn't find pins and GND. compare to sprint model or else D855 model as different between my device.
Please friends help me out on this
Hard-bricked LG G3 D858HK
Will you please, please help me too!
It seems I've hard-bricked my LG G3 D858HK Dual Sim 4G LTE 32GB too. It wasn't updating the firmware (only found out 3 weeks after warranty expired). So, successfully flashed the ROM to Marshmellow 6.0, then tried to root it with (mistakenly) wrong firmware - lollipop app/tool.
Problems: black screen, won't boot (red & blue light flashing), won't go into download mode, computer not recognising phone/USB is plugged into - even with right drivers installed.