Sporadic LG G4 boot issues H815 - G4 Q&A, Help & Troubleshooting

Hi
So I woke up this morning and my G4 was roasting hot and on the battery percentage screen (turned off). When I try to turn it on, sometimes it will freeze and reboot straight away and get stuck on the LG logo. Sometimes it will boot into Android and run for a few minutes and then the same issue again.
Can boot into TWRP but again, sometimes it freezes and reboots, other times, wont get past the TWRP logo.
I'm just waiting for it to cool down completely but is my phone completely broken?
Thanks all

Be prepared for ILAPO. Refer to appropriate threads. No need to create new one.

gedas5 said:
Be prepared for ILAPO. Refer to appropriate threads. No need to create new one.
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It's okay, ive fixed it but thanks anyhow.

Related

Black Screen, Blinking Red and Blue LED after boot

Hi all,
Before someone says it, yes I did look around for other threads before posting one of my own. I was not able to find the problem that I am having, nor a working solution.
I am currently running CM12.1 on a Sprint G3 (LS990). This morning, I woke up and found that my phone had frozen while charging overnight. No problem, this has happened before, so I unplugged it and pulled the battery out and rebooted. It was working fine, and then I noticed an update for CM. I hit download, and went to go brush my teeth. When I came back, I saw that it had frozen mid-download. Now it wasn't installing anything; the CM built in updater was just downloading the latest nightly. I waited 5 minutes for it to become responsive, but it never happened so I pulled the battery once again.
Now when I held the power button to start my phone, I saw the LG splash screen as normal. After that, the screen went dark and the LED began blinking red and blue. No matter how many times I pulled the battery to reset my phone, this would occur. I attempted to enter Recovery mode, but in this case after the splash screen the LED would briefly light up blue, and then the phone would reboot, and the cycle would repeat. The same would occur when I tried to boot into download mode.
So now that I cannot boot into anything at all, I assume that my phone is bricked. It is still covered under the limited manufacturer warranty, and since I can't boot up at all I assume it doesn't matter that it is rooted, but before I contact LG I would like to see if anyone here has any ideas.
Before sending it back, have you tried to use the KDZ tool to restore it?
http://forum.xda-developers.com/showthread.php?t=2785089
RapHaeL_4_4_4_ said:
Before sending it back, have you tried to use the KDZ tool to restore it?
http://forum.xda-developers.com/showthread.php?t=2785089
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That requires the phone to be in Download mode, and it won't enter Download mode, so I have not tried that.
Well, this happened to me after I flashed TWRP from Flashify on my LG G3 D855 in the day before yesterday and I just had to take the battery out and put it back in, and then I had to boot into download mode. Since you can't even boot into download mode, I'm almost sure the phone is bricked
FelipeGouliouras said:
Well, this happened to me after I flashed TWRP from Flashify on my LG G3 D855 in the day before yesterday and I just had to take the battery out and put it back in, and then I had to boot into download mode. Since you can't even boot into download mode, I'm almost sure the phone is bricked
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Yeah I assumed as much. Sent it to LG today, so thank you guys for trying to help.
ashingtondc said:
Yeah I assumed as much. Sent it to LG today, so thank you guys for trying to help.
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You HAVE to flash your phone if it was rooted or bump'd, otherwise, it won't be under warrenty, even if it don't boot, they're not stupid..
Every post have: "Your warranty is now void." in it for a reason.

[help] Issues with unbricked G3

So recently I had bricked my phone due to being silly with the wipe in TWRP trying to install CM12.1 and had to follow some guides to get the stock firmware which took some time getting to happen. Used the LG Flash Tool 2014 for this.
So far its back into Lollipop when it said Android is upgrading and boots into the standard LG stock of Lollipop. I'm glad I've managed to get back on the phone but I'm experiencing alot of issues with the phone in general since this issue.
Below is what I am currently experiencing:
Turning the phone off doesnt happen, the LED cycles through blue and green and is forever stuck on this. The same goes for trying to reboot so I have to pull the battery.
Some of the apps/menus turn the phone into a black screen and freezes. Takes some time before the phone realizes I'm double tapping to wake it up or press the power button to lock the phone and get the lockscreen up. Again I have to battery pull just to get anywhere.
Sometimes the phone will randomly just load into the LG boot logo and get stuck there, not too sure what causes this to happen.
The phone would be on and all of a sudden not respond as if its turned off. The LED light will be red as if its charging but once again I have to battery pullfr
Earlier today I used a site which checked my IMEI number to see which KDZ i need to get and used that for flashing again as I reckon I used the wrong file initially.
Basically I have a D855 16gb model and I'm on Three in the UK. The IMEI site which I was recommended to use said I needed to use D85520l_00.kdz
Let me know if I need to add any further information.
Try to fresh flash....wipe data also you have to do cse flash ....backup nvram part first , but i dont know how to backup imei so search on forum and i am not sure it's needed or not but for safety i say this.try to find out correct kdz for your phone according to your imei number.

D855 Stuck in Bootloop-- Light Sensor and Vibration Still Work

I'm having a weird problem. Yesterday I was using my phone as I normally do-- texting, playing simple puzzle games, etc.-- when I noticed the battery was at about 2%. I wasn't very concerned so I tried to send one last text before it died. Shortly afterward it died with the usual "Powering Down" alert. I thought absolutely nothing of it and once I had access to a charger, I did what I normally do: I turn on my phone, wait for it to get past the LG splash screen, and I plug it in once it gets to the boot animation. I do this so my phone will turn on instead of going into charge only mode. Also, like usual, my phone's screen dimmed seconds after the boot animation began (I assume from my automatic light sensor settings), and I could feel it vibrating a little (also something it typically does upon boot).
However this is as far as it got. I was very confused when about an hour later, the phone still hadn't completed boot. I removed the battery, inserted it again, and tried once more telling myself that I would wait as long as I could instead of just an hour. Booting the second time gave me identical results-- everything is normal (light sensor response and vibration indicating the phone is powering on) yet it gets stuck. The only difference is that this time I got to see the entire bootloop.
After the boot animation screen has run for a while, I get the usual "Android is starting.... Optimizing app ## of ##" (#= actual numbers). Once it finishes, instead of booting my phone, it begins the boot animation again. If left alone it will cycle between the boot animation and the "Android is Starting" screen indefinitely.
TL;DR:
1. ) Caught in bootloop between boot animation screen and "Android is Starting... Optimizing app ## of ##" screen.
2. ) The screen still dims and there are little vibrations that usually tell me the phone is about to turn on.
I have tried:
- a hard reset- this yields only a slightly stronger vibration and it starts the bootloop again.
- Download mode- this does the same as the hard reset
- Removing battery for a while- no results
- Full charge to completely dead to full charge again on charge only mode- no results
I am running CM13 Nightlies from late February (not completely sure which exact date). Which I flashed without issue about a month ago. I do have Xposed and run various modules, but I was using nothing at the time and hadn't for about a month. My computer recognizes my phone as an LG G3 Device, but refuses to access any files.
Any help would be greatly appreciated!!
Phone not starting.
First remove phone battery, insert it again, do not start phone. Connect your phone to original charger and charge it, while charging with the charger start your phone. Your phone should start if yes/no report me immediately. Your phone battery is failing to start your phone (Due to Low Voltage in battery). Replace with original battery.
jit1108 said:
First remove phone battery, insert it again, do not start phone. Connect your phone to original charger and charge it, while charging with the charger start your phone. Your phone should start if yes/no report me immediately. Your phone battery is failing to start your phone (Due to Low Voltage in battery). Replace with original battery.
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Alright, I removed the battery, reinserted it (without turning the phone on) plugged it into the wall charger (seeing the charge only battery animation), and attempted to turn it on. Whenever I try to turn my phone on after plugging it in, I get the LG splash screen followed by the battery charging animation. It never reaches the boot animation. I'll let it charge for a while and try again.
Thank you for the advice!
Okay, I let the phone charge completely and attempted to turn it on whilst plugged into the wall charger again. Unfortunately I had the same issue. The phone shows the LG splash screen and then the battery charging animation again-- no boot animation.
musiceas66 said:
Okay, I let the phone charge completely and attempted to turn it on whilst plugged into the wall charger again. Unfortunately I had the same issue. The phone shows the LG splash screen and then the battery charging animation again-- no boot animation.
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just start with a full reflash , if it doesnt boot up its simply broken
Jhinta said:
just start with a full reflash , if it doesnt boot up its simply broken
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Yeah, I'm trying to avoid a full reflash/data wipe. Since I haven't messed around with any Xposed modules or root apps, I also haven't backed up anything for quite a while. No abnormal apps were running before the battery died, which leads me to believe this can be solved somehow without a full wipe.
Also, I tried to use my boyfriend's battery to boot up my phone. I thought it might be a bad battery-- as some people on-line have mentioned. Unfortunately, it still refused to boot and it produced the same bootloop.
You see , if and not and this and that dont help . te only way to save files is to get acces by recovery or boot, you cant boot but possible you have recovery so start saving your files you need. when you have or dont have your files . you stil need your system to boot for that to happen, it needs to work. so flashing a default rom with wipe sould work if it doesnt you flash original if that doesnt work its dead
Verstuurd vanaf mijn LG-D855 met Tapatalk
I think I forgot to mention, I cannot access recovery mode. I have the latest TWRP installed, but attempting to boot into recovery gives me the same results-- endless bootanimation/ "Android is Starting" bootloop.
So no acces at all . so what do you do ? Read above! Anyway good luck
Verstuurd vanaf mijn LG-D855 met Tapatalk
Solved
I fixed my problem. It turns out I was being an idiot and got the method of entering recovery mode on the LG G3 confused with my Samsung tablet. I should be able to fix the bootloop on my own now. Thanks everyone for your help! Cheers to idiocy.
Hey, I have the exact same issue right now. Did you solve your problem, and how? I tried removing the battery and charging with original charger to 100%. I connected it to my PC, went into Download mode and clicked "Restore Upgrade Errors" in LG PC Suite. It successfully flashed the firmware update, then it said "Android is starting.... Optimizing app ## of ##". But after that it restarted into bootlop again. Also I noticed that sometimes it vibrates, and my LED (light sensor) doesn't light up anymore.
Any advice? I haven't tried replacing the battery yet.
simon710 said:
Hey, I have the exact same issue right now. Did you solve your problem, and how? I tried removing the battery and charging with original charger to 100%. I connected it to my PC, went into Download mode and clicked "Restore Upgrade Errors" in LG PC Suite. It successfully flashed the firmware update, then it said "Android is starting.... Optimizing app ## of ##". But after that it restarted into bootlop again. Also I noticed that sometimes it vibrates, and my LED (light sensor) doesn't light up anymore.
Any advice? I haven't tried replacing the battery yet.
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Hi i have the same problem with my lg g3 d855, after a reflash hi is start and do android optimazig after the tel is start and do this over and over. help please
Hi, the solution that worked for me was to
1. install drivers
2.install LGUP
3.flash "LGD855P_D855P10a_04" - found here https://drive.google.com/file/d/18tlmVNK_ba0jIapJy-Sz5wamxbIXh8xH/view

LG G4 stuck on LG life's good screen but no boot loop

Hello everyone,
i'm having a really weird issue. I have stock 6.0 installed.
A few minutes ago my phone rebooted because it was overheating due to gaming.
Since my phone was overheating it was just rebooting again & again because i needed to let it cool down.
I removed the battery (as i usually did) in order to let my phone cool down however when i booted my phone it wouldnt want to pass that "LG life's good" splash screen.
It's not a boot loop, i'ts not rebooting again & again anymore, it's just stucked on this LG screen.
How can i boot into safe mode or wipe cache knowing that i don't have any access to LG homescreen + settings.
Help
EDIT : What is the last firmware version of the H815 Swiss model? Should I try to flash my phone with the last version? I think it's not an hardware problem, something in the boot sequence might be corrupted when i removed the battery during the booting process.
JiDey247 said:
Hello everyone,
i'm having a really weird issue. I have stock Marshmallow installed.
A few minutes ago my phone rebooted because it was overheating due to gaming.
Since my phone was overheating it was just rebooting again & again because i needed to let it cool down.
I removed the battery (as i usually did) in order to let my phone cool down however when i booted my phone it wouldnt want to pass that "LG life's good" splash screen.
It's not a boot loop, i'ts not rebooting again & again anymore, it's just stucked on this LG screen.
How can i boot into safe mode or wipe cache knowing that i don't have any access to LG homescreen + settings.
Help
EDIT : What is the last firmware version of the H815 Swiss model? Should I try to flash my phone with the last version? I think it's not an hardware problem, something in the boot sequence might be corrupted when i removed the battery during the booting process.
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unless u did a bunch of mods this is heavy signs of the cursed ilapo bootloop

Another LG G3 brick in the world

Hi everyone,
First to begin, sorry for my frenglish.
My lovely G3 seems to be bricked since few days.
5 days ago, after a reboot, it stucked 30 sec on the moving LG logo screen and turned off. I tried to enter into TWRP, I had the TWRP menu but it suddenly shut off again. My battery was getting old , so I bought a new one ( a Polarcell).
Now I can't even get TWRP. When I switch on, I have sometimes LG logo five sec, sometimes just a black screen.
If I connect on USB, the device is not recognised (error 43).
If I try the download mode, I have the first screen with "download" written in very small and after a few seconds: black screen and device not recognised.
I installed LG drivers, Qualcomm driver... nothing much...
I'm kind of desperate, can't affort to buy a new mobile phone.
If someone has any advice... many thanks
Fred
I entered again into TWRP... but maybe 10 secondes after the screen shut off....
inhib said:
I entered again into TWRP... but maybe 10 secondes after the screen shut off....
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Same thing happened to me, remove your battery wait 5 minutes, try again, it will last longer, also could you try flashing your latest stock rom with LGUP and report back? Mine doesn't bootloop only on latest stock.
Thanks, but the G3 was without battery during 2 hours.... I wonder how I will be able to flash anything :-/
inhib said:
Thanks, but the G3 was without battery during 2 hours.... I wonder how I will be able to flash anything :-/
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You can try unbricking like this. Try to enter to bootloader mode without dealing with shorting the pins first, if you can make it enter into bootloader mode, you don't need to the short pins.
Thanks for the link, I had already read that but it's not very very clear. By te way, I think I 'll have to do the short pin because my G3 is not recognised as a Qualcomm, and USB keeps connecting disconnecting whend the screen is black.

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