G3 D855 bootloop, sort of? - G3 Q&A, Help & Troubleshooting

Hi guys,
I need your help!
This morning opend up snapchat and my phone just randomly turned off, since then its not booting any further than the LG logo, it just keeps restarting.
I have the latest BlissPop installed and flashing another rom also doesn't work because when flashing it also turns itself off.
What is going on and how can i fix my problem?

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[Q] [HELP] LG G3 Random Reboot then Boot Looped

Hi guys,
My sister's LG G3 had this weird bug where it restarts itself every time the Mobile Data is turned on. Several days after that it got stuck in boot loop, hell, it doesn't even enter the boot animation. It just completely restarts after the LG logo. I tried factory resetting the phone, which should've worked from my experience, but alas it still boot looped.
I wanna try flashing the stock firmware via Max Lee's tutorial but since the internet in my office is weak, I won't be trying this soon. Just wanna ask, is this a common problem since I saw many threads about this in Google Search? Is there a way to restore the phone without downloading a new firmware? What seems to have caused this problem?
Also what is the most stable custom ROM for the G3? The LG Stock one is soooooooo heavy. Thanks guys.

LG G3 D588 stuck in boot loop!

Okay so ever since last night, my phone has been acting weird. I was on a voice call over snapchat and my phone kept turning itself off, unless I kept the voice call screen open. I though this was just something wrong with snapchat, so I went to bed. When I woke up, I couldn't keep my phone on, it would stay on for about a minute and then just either shut down suddenly or shut down showing the LG logo. I have rooted my phone and I am using cloudy G3 custom rom. I am able to get into twrp manually. I've tried taking the battery out, removing the sd card' wiping cache/delvic and nothing's working. I did get one kernel crash error and ever since that it has shown an android is upgrading screen on boot, before going into a boot loop. Any help is appreciated.

Lg g3 turning off problem

My lg g3 d855 keeps turning off. It comes to the lg logo and then turn off.
I recently try to downgrade my software with LG Flash Tool, but in the process it turned off.
It still keeps turning off, event though it starts to install software on download mode when i try to turn on phone.
What should I do? I dont wanna lose my data.
Please help
update: tried with lg up, phone turned off at 10% updating
This is already exist here in these topics.
https://forum.xda-developers.com/lg-g3/help/lg-g3-endless-bootloop-battery-t3584567
https://forum.xda-developers.com/lg-g3/help/lg-g3-restart-loop-t3589071
Didnt help
But my phone turned off after lg logo, tryed flashing stock rom in download mode, phone turned off in the middle of process and now stuck in download mode, any flashing or updating with pc turns phone off and disconnects. Same thing with new oem batery which works on friends g3

D885P Stuck in Weird Bootloop

Hello guys, my LG G3 fell into a dreaded bootloop suddenly. It started with random reboots while it was on, then it became a bootloop whenever it turned on again and if it somehow managed to turn on, it would reboot soon after that.
I thought it could be related to the ROM I was using (LineageOS 14.1), so I did a clean flash with another ROM (RR Oreo) but it kept bootlooping. Now, after another full wipe, I'm having trouble launching download mode or TWRP unless I plug it in a computer, but it keeps bootlooping even after that.
Can anyone tell me if this is a hardware problem or just a hard brick?

My g3 bootloop

Hello everyone
My G3 (d855) (fulmics 8.0 ) started restating yesterday. when I turn it on, it restarts on lg logo before android come up and it stucks in a loop.
At first i thought it's a software issue and I did a factory reset usinng TWRP but still the same issue.
I reprogramed the same rom and then I programmed Official rom and still the same.
Today I found sth out. sometimes phone starts normally or after just one bootloop when the charger is pluged. so i think the battery may have problem.
I tried using a power supply to turn the phone without battery but it stuck again in bootloop. (phone draws 1.1A max)
any idea ?

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