Phone stuck on LG start up - G4 Q&A, Help & Troubleshooting

Hi, I have cynogen installed and all was working fine until this morning, noticed my phone appeared to be booting up, gets to the blue circle then goes black and goes back to the LG screen, then repeats. Ive never been able to get into recovery by pressing the power and vol button and have tried numerous times with no joy. I know i can boot into recovery using ADB but the phones needs to be on doesnt it? Is there any other way that I can do this? Please help been with out my phone all day! Feel lost lol

foxguard said:
Hi, I have cynogen installed and all was working fine until this morning, noticed my phone appeared to be booting up, gets to the blue circle then goes black and goes back to the LG screen, then repeats. Ive never been able to get into recovery by pressing the power and vol button and have tried numerous times with no joy. I know i can boot into recovery using ADB but the phones needs to be on doesnt it? Is there any other way that I can do this? Please help been with out my phone all day! Feel lost lol
Click to expand...
Click to collapse
you could do 2 things.. one download KDZ use LGUP flash it and see if it was software related or something went wrong at flash.. if it keeps doing it then it has the bootloop issue.. and need to be sent back for repair....can you provide your first 3 digits of your serial number...?

raptorddd said:
you could do 2 things.. one download KDZ use LGUP flash it and see if it was software related or something went wrong at flash.. if it keeps doing it then it has the bootloop issue.. and need to be sent back for repair....can you provide your first 3 digits of your serial number...?
Click to expand...
Click to collapse
Thank you, will look at this kdz, is it simple to use?
it has been working fine on cynogen for last few months, nor changed anything
s/n is 508

foxguard said:
Thank you, will look at this kdz, is it simple to use?
it has been working fine on cynogen for last few months, nor changed anything
s/n is 508
Click to expand...
Click to collapse
yes it is its pretty easy... . file is big though... download kdz for you variant.. what android you are using.? MM or were you on stock LP.?
well i think since your phone is from 2015 august. that bootloop was supposed to be fixed by then. but newer phone are still getting hit by the bootloop.. but be aware unlocking the bootloader voids warranty.. some been lucky that phone were repaired some were denied repair..

raptorddd said:
yes it is its pretty easy... . file is big though... download kdz for you variant.. what android you are using.? MM or were you on stock LP.?
well i think since your phone is from 2015 august. that bootloop was supposed to be fixed by then. but newer phone are still getting hit by the bootloop.. but be aware unlocking the bootloader voids warranty.. some been lucky that phone were repaired some were denied repair..
Click to expand...
Click to collapse
Its been unlocked for ages and running the cyanogen rom, this is what is now stuck but was running fine. lg website doesnt have the programme any more, will hunt for it. so this will work even though phone doesnt boot?

foxguard said:
Its been unlocked for ages and running the cyanogen rom, this is what is now stuck but was running fine. lg website doesnt have the programme any more, will hunt for it. so this will work even though phone doesnt boot?
Click to expand...
Click to collapse
her it is..
http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
here are the links but i think you got the BOOTLOOP problem that many been affected..
NO ...... the only way for your phone to boot and gather all data is to flash a moddedKDZ.. but am not sure if it works on your variant..
if you have warranty send it back...but if they find out its unlocked they may deny repair.. you must pay for it...
this will make it boot but it will make it slow. as it disables the main cores...
https://www.reddit.com/r/lgg4/comments/45gfg2/dae_g4_series_msm_big_core_disable_tool_guide/
read this post..
http://forum.xda-developers.com/g4/help/lg-g4-stuck-bootloop-t3268734

raptorddd said:
her it is..
http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848
here are the links but i think you got the BOOTLOOP problem that many been affected..
NO ...... the only way for your phone to boot and gather all data is to flash a moddedKDZ.. but am not sure if it works on your variant..
if you have warranty send it back...but if they find out its unlocked they may deny repair.. you must pay for it...
this will make it boot but it will make it slow. as it disables the main cores...
https://www.reddit.com/r/lgg4/comments/45gfg2/dae_g4_series_msm_big_core_disable_tool_guide/
read this post..
http://forum.xda-developers.com/g4/help/lg-g4-stuck-bootloop-t3268734
Click to expand...
Click to collapse
Going to give this a whirl now mate, thanks.

Related

[Q] Bricked , any way to unbrick !

Hi all , I've bricked this device about a month ago , I've been searching for unbrick method , I can say i searched the entire internet i was unnable to find any unbrick methods , nor new mainboard , I even conntacted huawei in the us , and they told me to buy new motherboard in alibaba.com there's no motherboard there to , I was supprised they to have no mainboards nor support for unbricking the device ,
so my question , Does anywan know how to do it, or where can i pursache a new motherboard.
You kind of need to explain the symptoms before the doctor can do anything, same thing applies here.
Explain what is happening on your device, No response / stuck on boot animation, will it go to Recovery etc.
Also what have you tried to unbrick. Give us some info otherwise we can't help.
I haven't seen any P6 Mobos for sale on Ebay and such, I wouldn't know about that.
Explain here... You'll get your phone unbricked. Never say die
Sent from my P6-U00 using XDA Premium HD app
PulseDroid said:
You kind of need to explain the symptoms before the doctor can do anything, same thing applies here.
Explain what is happening on your device, No response / stuck on boot animation, will it go to Recovery etc.
Also what have you tried to unbrick. Give us some info otherwise we can't help.
I haven't seen any P6 Mobos for sale on Ebay and such, I wouldn't know about that.
Click to expand...
Click to collapse
Well , I was trying to flash the CleanRom project , I'have made a post about that to ,
The Instructions were wery clear to me i followed them exactly how it was writen in tutorial.
I have an international verzion of P6 and according to that turorial , ( http://forum.xda-developers.com/showthread.php?t=2625680 )
in order to flash that room i moust firstly flash an Chineze verzion which comes with unlocked bootloader , then i did that
I downloaded the rom put it on phone flashed via setteings update software , then everything went fine the process it seelf showd me
completed 100% and in the end sayd OK , then my phone turned off, and it's never been on eversince :A
As of now the phone is totally dead black screen , I've tryed everything it doesent go in any mode
When i plug in the power cord it only shows a red light indicator.
I belive this is a Hard Brick , not soft brick .
Warranty? Did the same to mine got I repared for free...
jagwar1 said:
Warranty? Did the same to mine got I repared for free...
Click to expand...
Click to collapse
nope , no warranty
Nexhmedin said:
nope , no warranty
Click to expand...
Click to collapse
Did you tell them that you have bricked your P6? Just tell them you haven't done anything and you're a total noob.
rupro327 said:
Did you tell them that you have bricked your P6? Just tell them you haven't done anything and you're a total noob.
Click to expand...
Click to collapse
Yes i did brick my P6 and nope I aint gona tell them Im a noob :A
The thing here is to get help in here is not about send it back to china so if you have any other idea , your welcome to share.
I have no warranty , even if it had this phone is buyed in china , and traveled to the otherside of the world :it would cost as mouch as the phone itseelf to send it back to service.
Try flashing the latest TWRP, it has off mode charging. Can you put your phone in fastboot mode via adb ?
Not Hard Brick!
Happened to me before and guess what? Tried very simple thing - and it worked.
Take your sdCard out of the phone.
Replace the dload folder with the extraction from either the B111 from the Huawei site or the B125 from here on xda
Reinsert card and press all buttons down till phone goes into internal recovery.
Your main problem will be having enough battery to get you twenty minutes.
If your red light is functioning, you probably haven't blown your motherboard.
Sent from my LG-D802 using XDA Premium HD app
Nexhmedin said:
Hi all , I've bricked this device about a month ago , I've been searching for unbrick method , I can say i searched the entire internet i was unnable to find any unbrick methods , nor new mainboard , I even conntacted huawei in the us , and they told me to buy new motherboard in alibaba.com there's no motherboard there to , I was supprised they to have no mainboards nor support for unbricking the device ,
so my question , Does anywan know how to do it, or where can i pursache a new motherboard.
Click to expand...
Click to collapse
you device boot an loop in huawei screen.
samuelbryan said:
you device boot an loop in huawei screen.
Click to expand...
Click to collapse
Nope my device is completly frozzen no sign of life dead screen , when I connect to pc nothing show's up I've tryed installing drivers and everything else with no success same thing nothing happen's.
Nexhmedin said:
Nope my device is completly frozzen no sign of life dead screen , when I connect to pc nothing show's up I've tryed installing drivers and everything else with no success same thing nothing happen's.
Click to expand...
Click to collapse
Only solution for that is to take your phone to local service. I am talking from experience.
Sent from my ME371MG using xda app-developers app
Can you check if you plug it into you computer that your computer connects to it or makes a sound? That can probably prove that the motherboard is fine and maybe your LCD is broken or has loose connection.
Happened to me before. Black screen, only red led, nothing else working. It happened that I got scammed by a seller.
What I ended up doing was taking apart the phone and I found that the LCD connection was loose. Fixed that, then I saw that the phone wouldn't boot. Loaded B111, B118, nothing worked. I then got B125, and it miraculously worked.
You could try what I did, but it is quite risky and I was very lucky.
I have to agree with goce. Unless you are experienced and willing to mess around with things, you should go find local service.
samuelbryan said:
you device boot an loop in huawei screen.
Click to expand...
Click to collapse
What can I do on my phone just flashes the red light and include only the logo of huawei.
My P6 is stuck on splash screen. I rooted the handset and tried to install TWRP via flashify, it installed but after reboot its just stuck on splash screen. I cannot go into recovery as well now.
gurvinder76 said:
My P6 is stuck on splash screen. I rooted the handset and tried to install TWRP via flashify, it installed but after reboot its just stuck on splash screen. I cannot go into recovery as well now.
Click to expand...
Click to collapse
I think you should download the TWRP recovery for jelly bean from surdu and flash it from bootloader. If you are on the international this is the method for unlocking bootloader:
http://forum.xda-developers.com/showthread.php?t=2666116
Flash a custom rom next
Sent from my P6-U06 using XDA Premium 4 mobile app

ROOTED VZ G4 Bootloop - Will this break my warranty?

XDA,
I just got into a bootloop while on the Facebook App and I pressed the home button. I read that it happens to random people, but I want to make sure that I am safe.
I rooted roughly 5 months ago, when I got this phone and I've never had an issue.
What are my options? If I call VZ/LG will they accept my rooted phone? Or can I fix this bootloop? Will using this method http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848 help me ?
Thank you,
-J
EDIT: My phone booted up, the apps were optimizing, but then it just rebooted back to the LG screen and now it's stuck there.
[removed by dentralp]
dentralp said:
Don't want to do fear mongering just keep people in the know...
If you are stuck on LG screen you could have the same issue as;
http://forum.xda-developers.com/g4/help/lg-g4-stuck-bootloop-t3268734
I had full bootloops apart from when MM was installed, it just sat there on the LG logo. Could be that your on MM with the issue?
I have tried LG Bridge, Flash Tool and LG Up with various different roms, both LP and MM nothing worked.
Mine is also Rooted, with the bootloader unlocked. LG UK have been sat with my phone for over a month - hopefully I will find out soon if they have fixed it using the warranty - but even if they do, mine is with LGUK not LGUS ...
Think what I am trying to say is, try all the methods and if it doesnt work send it for RMA with your fingers crossed :/
Click to expand...
Click to collapse
Just so I understand you, I basically have to RMA my phone? All the other options seem like they resulted in a bootloop. And RMA I'm assuming you mean using warranty?
And I'm not on MM.
Just out of curiosity, would the fact that I rooted my phone disqualify me for using mywarranty?
I guess you rooted with injected system.img. If you can go to download mode you could write the original system.img back, so then you are not rooted. Or you could write a KDZ file in LGUP.
ObiDanKenobi said:
I guess you rooted with injected system.img. If you can go to download mode you could write the original system.img back, so then you are not rooted. Or you could write a KDZ file in LGUP.
Click to expand...
Click to collapse
As far as I'm aware, simply restoring an original unrooted system.img backup will still show "Modified" in the download mode status, once it's been rooted. The only way to clear that status is by flashing the KDZ. (You can still keep your personal data with that option though.)
iamjerry123 said:
XDA,
I just got into a bootloop while on the Facebook App and I pressed the home button. I read that it happens to random people, but I want to make sure that I am safe.
I rooted roughly 5 months ago, when I got this phone and I've never had an issue.
What are my options? If I call VZ/LG will they accept my rooted phone? Or can I fix this bootloop? Will using this method http://forum.xda-developers.com/g4/general/guide-lg-g4-stock-firmware-to-stock-kdz-t3107848 help me ?
Thank you,
-J
EDIT: My phone booted up, the apps were optimizing, but then it just rebooted back to the LG screen and now it's stuck there.
Click to expand...
Click to collapse
Based on what I've read in the main bootloop thread, the bootloop issue is a hardware problem that requires the phone motherboard to be replaced so I don't think they will be able to detect the root during the RMA process:
...
I have received confirmation from LG that series from May, June, July and August are afflicted by this issue and that the revision number doesn't matter. They also said that it is not necessary that all phones in these series will fail, but that under certain circumstances (not disclosed to me) they will start producing the bootloop issue which is h/w bound.
...
Update: It seems not all bootloops are due to deffective motherboard as on some phones they were able to detect the root and refused the repair under warranty.
So maybe for some G4's stuck in bootloop there might be a solution to be soft repaired.
I saw this in another thread, can you try this?:
...
Using DL mode (device off -> press and hold volume up while(!) connecting to PC) and LGUP you should be able to push any KDZ on your device and get out of the boot loop.
...
I don't have the bootloop problem so I can't test it but it might.
What's the build date of your G4 (between May-August 2015?)? What are the 1st 3 digits of your phone's S/N?
If you root any phone you automatically void your warranty. There's no exception to this and I actually understand why they do that because most people don't need to be rooting their phones lol but if u find a KDZ you're str8, use the flashtool and you'll never get into a permanent bootloop and you can use your warranty. But most likely something you modified or something another app was doing caused the bootloop not a hardware issue. Also it'd probably the last thing you ever even thought that caused it lol
Sent from my VS986 using Tapatalk
Have you tried a hard factory reset? Usually helps

HELP needed! G4 Bootloop!!

Hello guys!
It all started today in the morning when I opened Instagram application on my G4 (H815 model) and suddenly the phone froze. After 15 or 20 seconds it tried to reboot itself but it went straight into bootloop. It's not acctually a bootloop. It tries to go past loading screen and reboots another time and after that all I can see is LG logo.
I tried to enter recovery mode. No success. I tried updating/flashing KDZ file with LG Flash Tool and I got error everytime saying there was not enough information....
Last thing I tried was to boot into download mode. It shows Firmware Update screen but I don't thing ADB is working. I tried command adb devices and it found nothing.
I'm so desperate now as I need phone tomorrow. I hope it's not hard-bricked. Do any of you have idea what to do?
Any help apprechiated
TIA
Nejc
NejcSterle said:
Hello guys!
It all started today in the morning when I opened Instagram application on my G4 (H815 model) and suddenly the phone froze. After 15 or 20 seconds it tried to reboot itself but it went straight into bootloop. It's not acctually a bootloop. It tries to go past loading screen and reboots another time and after that all I can see is LG logo.
I tried to enter recovery mode. No success. I tried updating/flashing KDZ file with LG Flash Tool and I got error everytime saying there was not enough information....
Last thing I tried was to boot into download mode. It shows Firmware Update screen but I don't thing ADB is working. I tried command adb devices and it found nothing.
I'm so desperate now as I need phone tomorrow. I hope it's not hard-bricked. Do any of you have idea what to do?
Any help apprechiated
TIA
Nejc
Click to expand...
Click to collapse
you phone is dead. and must be sent to LG for repair or your retailer.. you got the famous bootloop issue. alot of people have it.. whats you first 3 digits of serial number ?
raptorddd said:
you phone is dead. and must be sent to LG for repair or your retailer.. you got the famous bootloop issue. alot of people have it.. whats you first 3 digits of serial number ?
Click to expand...
Click to collapse
are you sure it's dead???
Cause, OMG!
I can't be without phone. Is there any other way?
And BTW, I have unlocked bootloader, so no warranty for me
Why do I need first 3 digits of serial number?
NejcSterle said:
are you sure it's dead???
Cause, OMG!
I can't be without phone. Is there any other way?
And BTW, I have unlocked bootloader, so no warranty for me
Why do I need first 3 digits of serial number?
Click to expand...
Click to collapse
lots of people report bottloops theres a thread and i said about 80% suffers from it.. its a hardware problem from lg .
thers the flash kdz to disable big core ,phone will be slow but usable.. and some have reported that warranty was denied and some had luck and phone was fixed give it a try..
because the first phone are suppose to be more likely to suffer from it.. so to know if its old earlier phone. or new one . that soeant suppose to happen anymore but it still does..
raptorddd said:
lots of people report bottloops theres a thread and i said about 80% suffers from it.. its a hardware problem from lg .
thers the flash kdz to disable big core ,phone will be slow but usable.. and some have reported that warranty was denied and some had luck and phone was fixed give it a try..
because the first phone are suppose to be more likely to suffer from it.. so to know if its old earlier phone. or new one . that soeant suppose to happen anymore but it still does..
Click to expand...
Click to collapse
Thanks for the info. I checked serial number on the box and it says 507. I know a lot of 505 has this issue.
Do you have a link to that thread to disable main cores? I can still sell working phone rather than bricked
And I'm so pissed now because I didn't do anything wrong. Damn LG! Life's not good anymore!!
Is there possibility to flash KDZ with other program than LG flash tool? I can't get it working, it always says it couldn't find right information...
NejcSterle said:
are you sure it's dead???
Cause, OMG!
I can't be without phone. Is there any other way?
And BTW, I have unlocked bootloader, so no warranty for me
Why do I need first 3 digits of serial number?
Click to expand...
Click to collapse
Mine has gone away for repair . and by the way I'm not sure if you've noticed but you are without the phone anyway if it doesn't work . lol
fridaycider said:
Mine has gone away for repair . and by the way I'm not sure if you've noticed but you are without the phone anyway if it doesn't work . lol
Click to expand...
Click to collapse
I want to fix it. This would probably be possible if LG flash tool worked. Do you have any suggestions? I really like this phone
NejcSterle said:
I want to fix it. This would probably be possible if LG flash tool worked. Do you have any suggestions? I really like this phone
Click to expand...
Click to collapse
I really wish I could help . I managed to do a factory reset and it lasted 5 mins . you could try the oven fix .
fridaycider said:
I really wish I could help . I managed to do a factory reset and it lasted 5 mins . you could try the oven fix .
Click to expand...
Click to collapse
well, i guess I'll have to buy new phone. I'm a little disappointed with LG for this issue. Anyway, thanks for all of the useful posts. Thread can be locked now
Yes it's LG issue, but if you had not unlocked the bootloader , you would still have warranty. They will be fix this without problem
Wysłane z mojego LG-H815 przy użyciu Tapatalka
NejcSterle said:
Do you have a link to that thread to disable main cores? I can still sell working phone rather than bricked
Click to expand...
Click to collapse
https://m.reddit.com/r/lgg4/comment..._guide/?utm_source=mweb_redirect&compact=true
NejcSterle said:
well, i guess I'll have to buy new phone. I'm a little disappointed with LG for this issue. Anyway, thanks for all of the useful posts. Thread can be locked now
Click to expand...
Click to collapse
Give it a shot to try to get it fixed.. some had with unlocked bootloader.. someone already posted the KDZ that disables big cores..
mine is 603, anybody knows if it could have the problem?
Inviato dal mio LG-H815 utilizzando Tapatalk
nic85 said:
mine is 603, anybody knows if it could have the problem?
Inviato dal mio LG-H815 utilizzando Tapatalk
Click to expand...
Click to collapse
well only time will tell most will do .its just a matter of time.. since they are new and the ones getting bootloops are older.. so they say it takes about 8-9 months to show.. will need to wait and see. in 10 months from manufacturing date.
you cant tell wich one will but, LG says they fixed the issue in new phones..
Here is the video tutorial: https://www.youtube.com/watch?v=lbJXwPmbXFc
raptorddd said:
well only time will tell most will do .its just a matter of time.. since they are new and the ones getting bootloops are older.. so they say it takes about 8-9 months to show.. will need to wait and see. in 10 months from manufacturing date.
you cant tell wich one will but, LG says they fixed the issue in new phones..
Click to expand...
Click to collapse
thanks, bought a Galaxy s7 edge tho
Inviato dal mio LG-H815 utilizzando Tapatalk
NejcSterle said:
Hello guys!
It all started today in the morning when I opened Instagram application on my G4 (H815 model) and suddenly the phone froze. After 15 or 20 seconds it tried to reboot itself but it went straight into bootloop. It's not acctually a bootloop. It tries to go past loading screen and reboots another time and after that all I can see is LG logo.
I tried to enter recovery mode. No success. I tried updating/flashing KDZ file with LG Flash Tool and I got error everytime saying there was not enough information....
Last thing I tried was to boot into download mode. It shows Firmware Update screen but I don't thing ADB is working. I tried command adb devices and it found nothing.
I'm so desperate now as I need phone tomorrow. I hope it's not hard-bricked. Do any of you have idea what to do?
Any help apprechiated
TIA
Nejc
Click to expand...
Click to collapse
Have you tried flash your KDZ file with LGUP software? http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
InterCity92 said:
Have you tried flash your KDZ file with LGUP software? http://forum.xda-developers.com/g4/help/lgup-install-kdz-mm-lp-t3249803
Click to expand...
Click to collapse
Yes, I tried everything. I've sent LG G4 for repair with unlocked bootloader, they replaced it without problems. I was without phone for 16 days though. It's working now, but I have some WiFi issues (slow download speeds)
[CAN LOCK THREAD NOW]
raptorddd said:
well only time will tell most will do .its just a matter of time.. since they are new and the ones getting bootloops are older.. so they say it takes about 8-9 months to show.. will need to wait and see. in 10 months from manufacturing date.
you cant tell wich one will but, LG says they fixed the issue in new phones..
Click to expand...
Click to collapse
They are 100% lying almost every other phone is being bootloop .. Hey guys dont buy new phone buy refurbished phones instead..
Sent from my LG-H815 using XDA-Developers mobile app

LGG3 D850 stuck on firmware update screen

So my mom had an LG G3 D850 from at&t. was totally fine, then she updated whatever she had to 6.0 and it started bootlooping. Tried the LG Flash tool with a tot stock firmware. Went through the whole process got the blue screen with the red 3, it restarted, kept bootlooping. Tried it again but then it got stuck on 5% for like 4 hours, unplugged it and now no matter what i do i cant get into download mode. It shows the LG screen then goes straight to firmware update (even if i dont hold vol up) and it says 910K Bxx QEM (the xx changes) I was able to get into recovery mode, recovered it. same thing. Im losing my mind a little bit here so any advice, or pointing me to a tutorial would be greatly appreciated. Ive looked all over the internet and cant find anything helpful apparently the qualcomm thing where you short the motherboard doesnt work for this phone either?
*flips desk*
If it is under warranty .send your phone to at&t to get it fixed.
Its not
Jahanzaibawan said:
If it is under warranty .send your phone to at&t to get it fixed.
Click to expand...
Click to collapse
warranty expired 6 months ago
evangelion117 said:
warranty expired 6 months ago
Click to expand...
Click to collapse
i have same
Qualcmomm method you are describing is just to bring your phone into download mode. I have done this to my brother's g3. You have to flash using LG flashtool using different settings and then hard reset your phone. If it doesn't solve your problem.try to replace battery and then use custom rom.
tried that
Jahanzaibawan said:
Qualcmomm method you are describing is just to bring your phone into download mode. I have done this to my brother's g3. You have to flash using LG flashtool using different settings and then hard reset your phone. If it doesn't solve your problem.try to replace battery and then use custom rom.
Click to expand...
Click to collapse
no matter what settings i set LG flash tool to it doesnt recognize the phone. and no matter what i do the phone jumps to the firmware update screen, it skips the download mode screen. I have two batteries and ive repeatedly switched them back and forth :/ even after reseting the phone with factory reset it goes back go the firmware update screen
evangelion117 said:
no matter what settings i set LG flash tool to it doesnt recognize the phone. and no matter what i do the phone jumps to the firmware update screen, it skips the download mode screen. I have two batteries and ive repeatedly switched them back and forth :/ even after reseting the phone with factory reset it goes back go the firmware update screen
Click to expand...
Click to collapse
Firmware update screen is the download mode.
Just follow the guide of hyelton to flash your phone.follow steps properly.
still bootloops :/
Jahanzaibawan said:
Firmware update screen is the download mode.
Just follow the guide of hyelton to flash your phone.follow steps properly.
Click to expand...
Click to collapse
totally forgot to switch to com41, did everything exactly like that. got to the red 3, restarted it, and it still bootloops. i guess ill try a custom rom cause this stock one isnt working.
apparently cant do custom roms either, I got it to boot the the set up screen for 5seconds befores it crashed so i guess im throwing it away cause im sick of looking at it.
evangelion117 said:
apparently cant do custom roms either, I got it to boot the the set up screen for 5seconds befores it crashed so i guess im throwing it away cause im sick of looking at it.
Click to expand...
Click to collapse
Try LG PC Suite go to option update error recovery it will download the stock rom flash it dont worry it will take some time so be patient also what happened is when ur g3 wasnt fully updated meaning it got stuck or turned off when updating
.hit like if its helps

LG G4 Stuck In Download Mode

So i flashed Cypher OS on my LG G4 but SIM Card wasn't always detected so i decided to go back to stock rom. When i oppened Download Mode and LG UP, something weird happened and now my lg keep rebooting in download mode and has erased recovery and system so i cant do anything to go out of download mode and i cant use LG UP because every time it is in download mode 5 sec after it restarts
up
up
reddit link : https://www.reddit.com/r/lgg4/comments/85tn78/lg_g4_stuck_in_download_mode/
Just flash H815 MM v20p KDZ with LGUP, get the 8992 dll and it should work.
But
But i cant... My phone keep rebooting ...
Ty for help, community
zyafed said:
So i flashed Cypher OS on my LG G4 but SIM Card wasn't always detected so i decided to go back to stock rom. When i oppened Download Mode and LG UP, something weird happened and now my lg keep rebooting in download mode and has erased recovery and system so i cant do anything to go out of download mode and i cant use LG UP because every time it is in download mode 5 sec after it restarts
Click to expand...
Click to collapse
have u ever tried to flash TWRP again in fastboot?
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zyafed said:
So i flashed Cypher OS on my LG G4 but SIM Card wasn't always detected so i decided to go back to stock rom. When i oppened Download Mode and LG UP, something weird happened and now my lg keep rebooting in download mode and has erased recovery and system so i cant do anything to go out of download mode and i cant use LG UP because every time it is in download mode 5 sec after it restarts
Click to expand...
Click to collapse
Hi there,
I've been exactly there with my H815. I have tried numerous solutions, but to no avail. On your reddit post I saw that you tried the recovery key combination and ended up in download mode again? Did this happen, after you pressed a button? With my phone, when the LG factory reset screen appeared and I confirmed twice, a long time nothing happened. After a couple of minutes the Android recovery (not TWRP) screen appeared. Maybe you'll have a chance to get your phone recognized via adb sideload or sth. Or start fastboot mode. Maybe you can reflash TWRP? But if you are facing the same problems as me, it probably won't help you.
For me, I ended up sending my phone to LG, despite the fact that the warranty was void. They changed the mainboard and never said anything about repair fees and apparently the phone is on it's way back to me as I write. I hope it arrives tomorrow and I can let you know.
Hang in there! :fingers-crossed:
steadfasterX said:
have u ever tried to flash TWRP again in fastboot?
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Click to expand...
Click to collapse
I managed to go in fastboot one time by spamming all the key combos I could invent lol i had this chance and i flashed twrp and reboot in recovery but it seemed that it was already erased when I rebooted... (Sorry for bad english )
dat_benjie said:
Hi there,
I've been exactly there with my H815. I have tried numerous solutions, but to no avail. On your reddit post I saw that you tried the recovery key combination and ended up in download mode again? Did this happen, after you pressed a button? With my phone, when the LG factory reset screen appeared and I confirmed twice, a long time nothing happened. After a couple of minutes the Android recovery (not TWRP) screen appeared. Maybe you'll have a chance to get your phone recognized via adb sideload or sth. Or start fastboot mode. Maybe you can reflash TWRP? But if you are facing the same problems as me, it probably won't help you.
For me, I ended up sending my phone to LG, despite the fact that the warranty was void. They changed the mainboard and never said anything about repair fees and apparently the phone is on it's way back to me as I write. I hope it arrives tomorrow and I can let you know.
Hang in there! :fingers-crossed:
Click to expand...
Click to collapse
My warranty is over ( 2 Years ) Do you think I could try ?? (Bootloader unlocked/ Custom rom and recovery have been installed)
But I can access to the LG recovery if you mean the one with Restore factory with double Yes ? But when I press Yes my phone freeze like 15 seconds and reboot in download mode...
zyafed said:
My warranty is over ( 2 Years ) Do you think I could try ?? (Bootloader unlocked/ Custom rom and recovery have been installed)
But I can access to the LG recovery if you mean the one with Restore factory with double Yes ? But when I press Yes my phone freeze like 15 seconds and reboot in download mode...
Click to expand...
Click to collapse
I cannot give you any guarantees, as I am not associated with any LG support haha. Technically, I am still on warranty, but as I also unlocked the bootloader, installed Custom ROMs etc... the warranty would be void anyway.
I got a reply from LG support that i should send it to their repair shop (some shop in Germany) and they would reply with an estimate of the repair costs. Now, all I got is the tracking number, the phone's on its way home and they did not charge me at all (as of yet). So you could be lucky, but you very well may not be.
I'd say, take your chances and contact LG support, send it in. If they want to charge you a huge amount of money, they can still send it back to you unrepaired and you might be able to fix it yourself. In any case, I wish you the best of luck!
zyafed said:
I managed to go in fastboot one time by spamming all the key combos I could invent lol i had this chance and i flashed twrp and reboot in recovery but it seemed that it was already erased when I rebooted... (Sorry for bad english )
Click to expand...
Click to collapse
the thing is after you have flashed TWRP you HAVE to boot directly to TWRP afterwards. otherwise it gets overwritten.
You can also setup SALT and depending on what your current firmware is you can flash TWRP with SALT too.
For that IRC is much better though http://webchat.freenode.net/?channels=carbonfusion-user
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dat_benjie said:
I cannot give you any guarantees, as I am not associated with any LG support haha. Technically, I am still on warranty, but as I also unlocked the bootloader, installed Custom ROMs etc... the warranty would be void anyway.
I got a reply from LG support that i should send it to their repair shop (some shop in Germany) and they would reply with an estimate of the repair costs. Now, all I got is the tracking number, the phone's on its way home and they did not charge me at all (as of yet). So you could be lucky, but you very well may not be.
I'd say, take your chances and contact LG support, send it in. If they want to charge you a huge amount of money, they can still send it back to you unrepaired and you might be able to fix it yourself. In any case, I wish you the best of luck!
Click to expand...
Click to collapse
Mmh thanks but this is so annoying ahhaha I will try all I can do and only if I can't repair it i'll do that ! But thanks for you help bro ! Hope your lg will be good and not expensive to repair
steadfasterX said:
the thing is after you have flashed TWRP you HAVE to boot directly to TWRP afterwards. otherwise it gets overwritten.
You can also setup SALT and depending on what your current firmware is you can flash TWRP with SALT too.
For that IRC is much better though http://webchat.freenode.net/?channels=carbonfusion-user
-
Click to expand...
Click to collapse
Salt tell me that my bootloader is too high and have to downgrade (I have v29a and need v20 i think so)
zyafed said:
Mmh thanks but this is so annoying ahhaha I will try all I can do and only if I can't repair it i'll do that ! But thanks for you help bro ! Hope your lg will be good and not expensive to repair
Click to expand...
Click to collapse
No problem dude! I'll give an update, whether LG's charging me or not
Good luck
check the battery first then try to flash as quick as you can remember you may hard brick your device do it your own risk
zyafed said:
Mmh thanks but this is so annoying ahhaha I will try all I can do and only if I can't repair it i'll do that ! But thanks for you help bro ! Hope your lg will be good and not expensive to repair
Click to expand...
Click to collapse
Hi,
A belated little update. My phone has found its way back to me and is working perfectly again. The main board had some dysfunction, it was exchanged.
LG didn't charge me a dime, so I can't complain. Flashed LOS 14.1 just now and everything is running smoothly. Hope you had some luck with your phone as well?
Cheers
Ok I tried everything with salt, with the motherboard ! Last thing I can do is to contact the support ... Waiting their answer and i'll tell you the feedback

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