LG G4 Bootloop - Help me - G4 Q&A, Help & Troubleshooting

I bought the LG G4 about two weeks ago. It is completely stock and not rooted. Today suddenly it shuted down, i tried to reboot but started a bootloop. There is the LG Logo and in the upper left corner of the screen appears this message: "secure booting Error! code 1006" for 3/4 second. After that it reboot again and again. I also tried to hard reset but when i booted in recovery mode and i selected "Yes" it start again the bootloop. Pease help me! :crying:

Seraff said:
I bought the LG G4 about two weeks ago. It is completely stock and not rooted. Today suddenly it shuted down, i tried to reboot but started a bootloop. There is the LG Logo and in the upper left corner of the screen appears this message: "secure booting Error! code 1006" for 3/4 second. After that it reboot again and again. I also tried to hard reset but when i booted in recovery mode and i selected "Yes" it start again the bootloop. Pease help me! :crying:
Click to expand...
Click to collapse
You might want to try and do a .KDZ Flash in order to take your device back to stock.
http://forum.xda-developers.com/g4/development/stock-complete-kdz-list-t3147406

i have the same issue but it wont let me go into download mode either due to this problem

Bootloop/Error Code 1006
As of this morning, I am getting the exact same error - just started doing it while sitting on the wireless charger. Removed battery for half-hour, removed SD card - nothing helps. All I get is brief flashes of the LG splash screen, then nothing.
If battery removed and USB plugged in, I only get a battery/flashing question mark symbol on the display and phone does not power up.
Phone is maybe two months old, not rooted, so am very disappointed in my first LG phone since enjoying a few HTCs (Hero, Evo 4G).
Let's hope the Sprint store backs up their TEP with a brand new phone today...

Seraff said:
I bought the LG G4 about two weeks ago.
Click to expand...
Click to collapse
I bought mine a week ago too :/
What month was your device manufactured? You can check on the outside sticker on the original box (if you still have it)
Mine was made in May and i'm having this problem. I think there was a bad batch made shortly before release that had defects. Here are some others with the same problem with phones made in May

lol just send em in on warranty.

Croize said:
lol just send em in on warranty.
Click to expand...
Click to collapse
yup. you're right. i'll be doing this soon

My problem this, please check solution please

my g4, 818P just had boot loop this morning. suddenly it was restarted and when I looked at it I really wish its not a boot loop, i did have a bad feeling and it became true. damn. I guess its the may batch *I cannot find the manufactured date but I pre ordered this, so this is maybe the first batch.
I took the battery out, SD card, sim card, no luck. Then, I let it boot loop for few times. I don't know maybe after tens restarts it show Android is starting and optimizing apps *and its still optimizing 56 of 116*. This is the second time, the first time when it was optimizing 17 apps *and I picked it up* the device suddenly restarted and stuck in boot loop again.
After read the reddit thread its the same symptom. I guess it really need to be replaced with *refurbished like new device* its just like a second-handed device after you had pre-ordered it.

Related

D855 not working

Hey,
my phone is not turning on,not entering recovery mode, not entering download mode, not entering the hard reset mode, not recognised by the PC and not charging.
2 months ago i reached my phone and he had "black screen". took the battery out,turned the device on and he got black screen again. took the battery out again but it back in and turned on the device again, entered the menu and it got stuck. took the battery out and in,turned the device on and it happened again.
I wanted to reach the settings menu to restore the phone but couldnt get to it because the phone froze. so i decided to perform a hard reset.
I did this, the screen was black for 10 minutes (could see it is turned on), the the android logo was on the screen with a loading bar,and then the screen went off. waited another 15 minutes and tried to turn it on,and it did not respond.
what can i do to make it work?
Did you make any software modifications to it prior to the problem occuring
itsbighead said:
Did you make any software modifications to it prior to the problem occuring
Click to expand...
Click to collapse
did nothing.
I tried to update to 5.0 but with not success (pc suite and from the phone updater)
forgot to mention, i took it to a lab and they told me its a flash component
anyone?
AirM said:
anyone?
Click to expand...
Click to collapse
I had the same problem, with black screen, but mine showed LG logo bootloop, tried everything, without success, I send it to a service, waited almost two months, they said dead mmc and replaced motherboard under warranty. Hope you will resolve this...

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
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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.

LG G4 stuck in a different kind of boot loop.

So I have an, I beleive korean h815, I have been rooted for a couple weeks now, nothing else done to the phone. Today all of the sudden it stays on the LG splash screen. Very occasionally it'll start up and say "android is updating" but then it reboots the splash again. Is there a way I can just wipe everything and start like from factory again? I've tried the factory reset from the power+volume screen, I got to that screen, but it didn't do anything.
correction, it says twn on the box, so i'm guessing it's taiwan.
I found the thread on using LGUP to install kdz's. Went with the 20c kdz. Phone went to restart and it's just sitting on the screen that says LG. No animation or anything. Someone please help.
I had to buy am LG g stylo to get me by. I really want to fix my g4 and return this thing.
Sent from my LG-H631 using Tapatalk
Nickdroid86 said:
So I have an, I beleive korean h815, I have been rooted for a couple weeks now, nothing else done to the phone. Today all of the sudden it stays on the LG splash screen. Very occasionally it'll start up and say "android is updating" but then it reboots the splash again. Is there a way I can just wipe everything and start like from factory again? I've tried the factory reset from the power+volume screen, I got to that screen, but it didn't do anything.
Click to expand...
Click to collapse
Can you tell us your android version? I think i have exactly the same issue which is quite annoying.
Each night i put my phone in the power plug with flight mode ON. In the morning, when i remove the flight mode , the phone restarts and falls into bootloop. Happened 3 times exactly the same way. I went for PCB replacement the previous week and i got a PCB starting with ser. No 601xxx. Today morning when i removed the flight mode i got a bootloop again. I am sure that this is caused by the V20D version that i installed the last days.... LG messed up again...i have a bootloop each week..
Not sure. But this is staying on this screen, it doesn't restart and stay on.
Sent from my LG-H631 using Tapatalk

LG G3 D855 blackscreen right after booting logo

Okay, so i have an LG G3 D855, few months ago it worked like a charm.. But then shortly after i started noticing random reboots everytime during using apps. Then it went in bootloop. I tried to turn it on again, entered recovery screen, choosed factory reset and it did, but then it went through the same process, random restart. Eventually stuck up in factory resetting screen. However i think i made mistake when the phone freezed in reset screen : pulling out the battery. later it lost its IMEI & kept heating up (probably tried to find its cellular framework of some sort).
Days passed, several factory resets has been done. Now the phone's at its worst state. It refused to get past the boot logo. everytime it finishes booting, the display just goes black, tried to plug usb charger, chargin indicator doesn't want to turn on, neither after i pulled out the battery. I have to leave it a few days to get it working again, but it keeps persisting.
Addition : The phone's also feels warm post the blackscreen.
Any thoughts whether can this be fixed or i have to replace something inside the phone's board?
thanks in advance.
Sussudioo said:
Okay, so i have an LG G3 D855, few months ago it worked like a charm.. But then shortly after i started noticing random reboots everytime during using apps. Then it went in bootloop. I tried to turn it on again, entered recovery screen, choosed factory reset and it did, but then it went through the same process, random restart. Eventually stuck up in factory resetting screen. However i think i made mistake when the phone freezed in reset screen : pulling out the battery. later it lost its IMEI & kept heating up (probably tried to find its cellular framework of some sort).
Days passed, several factory resets has been done. Now the phone's at its worst state. It refused to get past the boot logo. everytime it finishes booting, the display just goes black, tried to plug usb charger, chargin indicator doesn't want to turn on, neither after i pulled out the battery. I have to leave it a few days to get it working again, but it keeps persisting.
Addition : The phone's also feels warm post the blackscreen.
Any thoughts whether can this be fixed or i have to replace something inside the phone's board?
thanks in advance.
Click to expand...
Click to collapse
Reflash with lgup.
Remove the SIM card and the memory card. try again. Full wipe system data ...
I've had the same problem. I've tried. Worked
found the problem. memory card
EDIT: Some kind of voodoo happened right now! I was about to unbrick again and wanted to give the phone a try to boot before. And it did! So no problem at the moment, but still a strong feeling of uncertainty...
EDIT: Phone is still randomly rebooting and gets stuck in bootloops
-----
Hej guys, I really need your advice,
but first things first: Thank you very much for all of your wonderful work on custom roms and further support of older devices. I've been reading here for a few years now and was more or less happy to have up-to-date-roms for some of my phones.
Now I'm facing quite the same problem like OP did / does. Everything started with me, following this guide to root my D855 (coming from stock rom) and flash TWRP: you tube.com/watch?v=8VOgM3jLas4 (Note: The guide told me to flash "3__HacerPermisivo.zip" for updating the kernel, which I did.)
Next, I flashed a newer version of TWRP ("twrp-3.2.3-0-d855.img") than the one provided in "2__AutoRecMMD855.apk" by the guide above. I wiped dalvik and cache and after that, I flashed "lineage-15.1-20190410-nightly-d855-signed.zip", wiped dalvik and cache again and flashed "open_gapps-arm-8.1-pico-20190411.zip". I wiped dalvik and cache again and told TWRP to reboot.
Here is, where problems began to occur. The phone got into a bootloop, showing up the LG splash screen again and again instead of booting into LOS correctly and set it up. At some point I decided to remove the battery. When I did, at the same time LOS was just going to load, which I saw because of its beginning boot animation. So I screwed it up right at the wrong moment, I guess.
From here, the phone bootlooped every time, I wanted it to start. No battery acrobatics helped and on top I couldn't get it into recovery mode. Any attempts ended in bootloops. I think, this might be what is called a brick / to brick your device, isn't it? I found this guide to unbrick a D855 and followed its steps: open -freax.fr/guide-unbrick-your-lg-g3/
Believe me, it was a real pain in the ass! Because of me, messing up something or the phone getting stuck into a bootloop during the unbrick process, I had to do it 4 to 5 times until success... I have to say: I didn't follow the last steps beginning from "Root". Instead, I followed the guide from the beginning of my post.
Finally, I got "lineage-15.1-20190410-nightly-d855-signed.zip" and "open_gapps-arm-8.1-pico-20190411.zip" to run. I set it up and began to load some of my apps of my Play Store collection. While downloading, the phone froze, crashed and began to bootloop, from here unable to boot normally or to get into recovery mode. So I unbricked and flashed again (again several times because of bootloops before LOS first set up). When I got it to work again, I was able to install my apps without being trolled by the phone again. But scrolling through the eBay app froze the phone and it began bootlooping again...
You can believe me, I was about to throw the D855 against the hardest piece of wall, I could possibly find in my rage. The reason why I didn't give up at this point is, that I LOS-rommed two other D855s just a few days before. Those were my mom's and my girlfriend's and they work fine until today. I bought this third one for myself, because I was impressed, how good LOS worked on the D855s. On top I wanted to get rid of my Samsung Galaxy S4 (GT-I9515), because LOS kinda sucks on it, but this is another story...
So I figuered that the earlier LOS version I used for the women's phones, could solve the problem. So I unbricked again and flashed "lineage-15.1-20190327-nightly-d855-signed.zip" and "open_gapps-arm-8.1-pico-20190329.zip". And hell yeah, that did work! No bootloops, eBay worked fine, just everything was as I loved it on the other phones, I flashed. Until tonight. I've been lucky for almost two days, but tonight this happened: I plotted a route in Google Maps and saved it as a shortcut on my homescreen. I closed Maps and tapped the route icon. Freeze - crash - bootloop - no recovery mode! I wanted to start crying, because Maps has already worked fine yesterday. And it still does on the other two phones, which run exactly the same rom...
So now, I'm sitting here, not knowing what can be done further. I'm not a programmer / developper or any of those cracks providing us the newest software for old phones. So I just can do wild guesses. Maybe the moment I removed the battery the very first time after flashing messed something up very deep inside the phones internals and it can not be cured any more. Maybe some of you guys have experienced similar things and know a tweak or a simple step, I forgot. Anyway, I hope I can use my phone on LOS some day which I bought especially for this case.
Keep up the great work, folks!
Greets
I ordered a new mainboard. It should arrive within 3 weeks. I'll keep you updated.

g8 (att) bootloop

Hey hey people. Been around this site for years since i had my htc mogul i believe. I searched for some help with the issue im having and came up empty. I have an lg g8 thinq and it took an update late sunday when i was asleep so i dont know when. It immediately was acting funky and by the end of day - up until this moment it has been boootlooping i even fac reset and it isnstill bootlooping-brought to att and their hands are tied talk to lg or assurion (boy they really are jelpful there.....) anyone out there experiencing this because its my primary phone qnd as i sit typing this im on my old s8 qctive that is beat to **** but pulled the sim from my g8 and stuck it in here. Anyway it will get past the lg logo and start bootlooping at the att circle/emblem-every time until the battery dies. Hopefully i didnt break amy rules again i havent been on in awhile but this really is beyond frustrating my whole life in that phone and idk last time i backed it up but its been awhile. THANK YOUA to ANYONE that can help point me in righht direction. Also i forgot to mention non rooted completely stock.
So you've already held power and volume down at the same time with the phone on?
I am too having the same problem. Mine is a T-Mobile LG G8, stock non rooted, got updated last week and then acted funny(some apps crashed), I restarted it won't reststart; Stucked on some LG-G8 screen. I hard reset it (Vol Down-Power/LG Screen, release and then hold power button; and then hard reset), After that: it stuck on boot loop.
What I can try next?
Swizzle82 said:
So you've already held power and volume down at the same time with the phone on?[/QUOTe
Yes. Dozens of times
Click to expand...
Click to collapse
When my update came through on T-Mobile it got stuck at the Tmo splash screen. Pressed the power and volume down until it turned black and let go. It rebooted normally after.
Swizzle82 said:
When my update came through on T-Mobile it got stuck at the Tmo splash screen. Pressed the power and volume down until it turned black and let go. It rebooted normally after.
Click to expand...
Click to collapse
Hi guys, am just a newbie here from Malaysia and a new owner of a 2nd hand LG G8 ThinQ (LM-G820UM); no idea where it's from but got it already with Android 10 update.
'twas working perfectly fine for a few days, but suddenyl got stuck in bootloop after I reboot (Power + Volume Down buttons) the phone when I was trying to change to a different SIM card. It would remain in bootloop until the battery is drained.
I can connect it to my laptop and seems to be detected pretty good and able to switch to Download Mode, but can't re-flash with either Flash Tool or LGUP.
- Have tried to use different Flash Tool versions - in version 2014, the flashing will just stop at server error, in 2016 and 2025 versions it will require LGST login (apparently to connect to some server which require registration).
- same goes true for LGUP, both versions 1.14 and 1.16 (patched version) will just stop at 4% then the apps will close without any error or anything happening in the phone.
Appreciate any help to recover this phone which I paid for a few hundred dollars as I was impressed with the spec and was so delighted to a very good spec phone; then this happened.
Thanks!
Jung1875 said:
I am too having the same problem. Mine is a T-Mobile LG G8, stock non rooted, got updated last week and then acted funny(some apps crashed), I restarted it won't reststart; Stucked on some LG-G8 screen. I hard reset it (Vol Down-Power/LG Screen, release and then hold power button; and then hard reset), After that: it stuck on boot loop.
What I can try next?
Click to expand...
Click to collapse
I'm in the same boat but with ATT. LM-G820UM I believe. Completely stock software. I just had it sitting on the charging dock for a while and I came back to it and it was stuck in a bootloop. No idea what's caused it, but I can't seem to get it to stop for anything. This is one of the many reasons I find not having a removable battery deeply upsetting :/
okay will try that as soon as i can get this thing to boot normal again it now stuck on the lg g8s screen think i flashed the wrong abl_a and abl_b files
Has there been any progress in getting this fixed?
Other than flashing the entire stock kdz not sure what else can be done...

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