LG G2 doesnt boot anymore - G2 Q&A, Help & Troubleshooting

Hi everyone
Ill try my best to explain my problem
To be simple, i started with a 4.4.2 version on my phone. I was tired using a phone no longer up to date so i decided to root it.
Sunday night I decidec to install the **crDroid**v2.0 CFW
I install TWRP following the tutos and i installed crDroid and gapps just after.
After the reboot, the phone doesnt boot at all. Only the logo appears for a very brief moment and vanish and the screen stay black but ON.
I do not panick and use LGMobile Support Tool to get my phone working again and it also helped me to find out that Lollipop version exists
This update wasnt available using update tool on the phone directly
So i restarted from a 5.0.2 version.
Tried to root it so many times, with so many differents methodes but nothings working
So i reflashed a kdz file with lash tool in order to downgrade to KitKat 4.4.2.
I root the G2 again (easy) and i try to install Lineage this time
Just like the beginning, the phone doesnt boot anymore
Is there any necessary step i am missing in order to make it work or my phone does have a real problem ?
Because im kinda annoyed i checked like 4 differents websites including this one, and the result remains the same
Thanks to everyone able to help me, even a bit
Sorry for the bad english, this is not my primary language
Good evening

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[Q] Help needed - Bootloop after Kies update to lollipop

Two days ago i tried to update my SGS5 (SM-G900F) with Kies to Android 5.0.
The phone has newver been rooted.
That is supposed to pretty straight forward, but after the update i havnt been able to use it.
After each boot it gets me to the logon screen, where i just have enough time to press my code but then it restarts over and over.
So i thougt something might went wrong in the process and used Odin 3.09 to flash the NEE (Nordic/Danish) version from Sammobile manually.
Unfortunately this didnt change a thing and the bootloop is still there.
From the short time where i gain access to my lock screen i see my old lock screen background, but the Font and setup has changed, so i guess it runs Android 5.0 now.
I would appreciate any help to this matter, since i'm growing at bit desperate on this now.
II would prefer not to root it, but if thats the solution then its fine by me.
I should be able to use ADB with the right guide, but havnt used it since the HTC Magic
Well found a solution.
Installed the Team Win Recovery Project and then did a full wipe (VolUp+home+Power under reboot).
So lost everything on the phone, but it works
I was lucky that i did a backup last weekend of images/videos last weekend. Phew....

[Q] No USB connection?

Hey,
I've messed up my phone many times before but I usually find my way and end up fixing it. This time, I have no idea.
I got a new refurbished LG G2 in the mail after my old one had completely broken down and Rogers honored their warranty and sent me a replacement. This replacement took a while and I became an iPhone guy for a bit (about a month). Usually there aren't much options for the D803 but this time I seen the new 5.0 Lolipop Resurrection Remix for D803 and having been away from andriod for so long I wanted the latest and greatest features so I blinded installed it (after rooting using towelroot and installing recovery through AutoRec). I used TWRP to flash the ROM and then GAPPS right after. When the phone restarted it would pass the LG boot logo but got hung on the Resurrection Remix boot logo for quite some time. I let the phone sit for a few minutes and it finally went to the setup page of the ROM. I input everything and being worried that this would happen again when I restart my phone, I used Flashify to flash a 4.4.4 ROM because I thought it was the 5.0 ROM that was causing the problems. The phone still hangs sometimes. So I thought I would go back to stock using LG Flashtool and a D803 Kdz. (which I've done numerous times before). I then realized that whenever I connect my phone to my computer, it doesn't recognize it at all. (makes no noise, but it charges). The phone doesn't prompt me to select which method I want to use for my usb connection either (usually it asks if I wanna use it just to charge, MTP, tether, etc).
I realized I probably did a couple of things wrong here and I was wondering if anyone knows where I would start to get my G2 back to working order. (I hate using the iPhone)
Any help
Same probem here, i read in other post that it's a problem on boot image, i don't know i kdz tool can be the cause but after that i got back stock firmware doesn't work.
here my post http://forum.xda-developers.com/lg-g2/help/usb-otg-t3012311

N910F problems - emmc read fail/ flashing stock no longer boots the phone.

Hello. I had gotten this Note 4 phone which had a custom recovery installed on it but the rom seemed to be official, on 5.1
The first thing I did was go to samfirmware and flash a 6.0.1 rom, it went fine, phone was working properly. Then I got greedy and wanted to test a Note 7 ported rom. Flashed TWRP recovery and from within I flashed RamROM http://forum.xda-developers.com/note-4/snapdragon-dev/rom-sm-n910g-ramrom-t3400349 , I downloaded the one from post#2 , the N910F one that my phone is and after it flashed to ROM it simply stopped working. My phone no longer booted, was booting me directly into Download mode with emmc read error. I kept trying to flash the stock rom which I previously flashed and it would fail.
Afterwords I used Smart Switch to reinitialize the phone, writing my phones S/N and that failed as well but at least that made my phone boot into a different recovery where it said to connect to Kies. Once again I used Smart Switch and this time it was successful 100%. My phone even booted into the OS and was working, however, while using it, after 10 minutes the phone restarted into Download mode with emmc read error.
So all in all the phone is functional but it starts to lag and restart. Now I'm kinda stuck again since I've tried to flash the firmware I got from Samfirmware through Odin, it succeded but it just doesn't boot, it goes to Recovery, tries to apply an update and I get an error.
Is there anything I can do? I can't believe the emmc could've broken just from trying to flash that custom rom, especially that afterwards I was even able to boot into the phone.
Thanks for reading and I appreciate the help.
engwee said:
Hello. I had gotten this Note 4 phone which had a custom recovery installed on it but the rom seemed to be official, on 5.1
The first thing I did was go to samfirmware and flash a 6.0.1 rom, it went fine, phone was working properly. Then I got greedy and wanted to test a Note 7 ported rom. Flashed TWRP recovery and from within I flashed RamROM http://forum.xda-developers.com/note-4/snapdragon-dev/rom-sm-n910g-ramrom-t3400349 , I downloaded the one from post#2 , the N910F one that my phone is and after it flashed to ROM it simply stopped working. My phone no longer booted, was booting me directly into Download mode with emmc read error. I kept trying to flash the stock rom which I previously flashed and it would fail.
Afterwords I used Smart Switch to reinitialize the phone, writing my phones S/N and that failed as well but at least that made my phone boot into a different recovery where it said to connect to Kies. Once again I used Smart Switch and this time it was successful 100%. My phone even booted into the OS and was working, however, while using it, after 10 minutes the phone restarted into Download mode with emmc read error.
So all in all the phone is functional but it starts to lag and restart. Now I'm kinda stuck again since I've tried to flash the firmware I got from Samfirmware through Odin, it succeded but it just doesn't boot, it goes to Recovery, tries to apply an update and I get an error.
Is there anything I can do? I can't believe the emmc could've broken just from trying to flash that custom rom, especially that afterwards I was even able to boot into the phone.
Thanks for reading and I appreciate the help.
Click to expand...
Click to collapse
read this - http://forum.xda-developers.com/note-4/help/note-4-issues-t3453048
there are links to more threads related to your issue.
Short version though:
it is dying. install wake lock application, add it to start up and set settings to #4.
accept the fact that your phone will eat the battery faster and one day WILL die completely
Thanks for your response. Regarding the Wake lock application, I'm starting to look into it, I asume I'll have to be rooted. I'll try to recover it again using Smart Switch and then I can only hope I can install TWRP and still have it functional.
Previously when I was able to get it working with Smart Switch, entering the recovery messed everything up. It said it was applying an update and that got stuck.
engwee said:
Thanks for your response. Regarding the Wake lock application, I'm starting to look into it, I asume I'll have to be rooted. I'll try to recover it again using Smart Switch and then I can only hope I can install TWRP and still have it functional.
Previously when I was able to get it working with Smart Switch, entering the recovery messed everything up. It said it was applying an update and that got stuck.
Click to expand...
Click to collapse
no need to be rooted, just download, install and set it to autostart
I'll try it if I somehow manage to get the phone working again, Smart Switch just fails now midway through.
golden_m said:
no need to be rooted, just download, install and set it to autostart
Click to expand...
Click to collapse
Is this the app you're talking about? https://play.google.com/store/apps/details?id=eu.thedarken.wl&hl=en
What exactly does it do?
I managed to restore it eventually with Smart Switch, it took quite a few tries, then I switched to my Macbook when I saw the app was available on it too and the 3rd try succeded. I only did it because I saw the 2nd try had the % much higher than the first.
engwee said:
Is this the app you're talking about? https://play.google.com/store/apps/details?id=eu.thedarken.wl&hl=en
What exactly does it do?
I managed to restore it eventually with Smart Switch, it took quite a few tries, then I switched to my Macbook when I saw the app was available on it too and the 3rd try succeded. I only did it because I saw the 2nd try had the % much higher than the first.
Click to expand...
Click to collapse
yes, that is the app.
i've read it does not allow your phone to go to sleep mode.
drains the battery faster, but this is the only way to keep note 4 working without swapping its motherboard...
I have a question, my gf recently bought a note 4 and we may swap our phones and if we do, i'll flash CM and tinker with it because i find this phone very interesting, just a question, does this bug affect the N910C (exynos) model? Do i have something to worry about? Because the phone is warrianty protected and if it's the case, i don't want to break it. I hope someone will shed some light on this

i need a refresher can anyone help

so i been at my computer for HOURS and having major issues with TWRP not wonting to boot right, yes i am trying to install a later version of TWRP but everywhere i look a no go i even tried TWRP 3.4.0-1
so since everything has changed what is new out there, what are the new ways to get TWRP to work on this phone, what have i missed ever since i have been gone.
i re did the whole phone that i am back at stock vs99513A, no root nothing.
has anyone even rooted OREO 20C B or A if so where (no i didn't google cause after this post im getting off, tired of figuring out why TWRP sucks right now)
sorry to sound stressed, a lot has been going on and its been hard for me to get back into the game to help others, already sucks to see the method i did is so out of date and a lot has changed :'(

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