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Hello my name is Adam and I have a Verizon Note 4 Developer Edition. I would like to start by saying that I DO have a ABOOT partition backup saved in multiple locations. Here's my dilemma, normally I plug my phone in at night upon my windowsill at my apartment. I live in Duluth and recently we have experienced some really really cold weather and there was condensation that leaked from the window to the windowsill. My phone was not soaked and there is really no sign of water damage upon inspection of the circuitry. However when starting the phone on battery it was in a bootloop where it would start to the OS, wouldn't get a signal and reboot. It is stuck in a reboot loop, I even odin a stock restore of 2BOGS as i was able to boot into recovery my phone would still be in a boot loop updating apps. When I plugged my phone straight into the usb charger there was some hiss from the speaker and the usb port had a burning smell. It rebooted a couple of times and now the phone wont turn on at all. So I ask is it possible to replace the usb flex port and then it might work again or is the motherboard fried? Could I possible have a bad battery? i have two that i swap out but they have both been recharged alot. What is my best option? I'm decently tech savvy and would like to salvage this phone if possible considering Samsung doesn't sell the developer edition anymore. Could i just swap the motherboard into another samsung 910V and hope that my root remains? is there anyway to transfer the root to a new phone? Any help would be greatly appreciated, i am quite desperate at this point. I will be happy to provide you with any information I can, please let me know if you need anything further.
Thanks Dev Community!
Send it to Samsung for repair.
doubleplay648 said:
Hello my name is Adam and I have a Verizon Note 4 Developer Edition. I would like to start by saying that I DO have a ABOOT partition backup saved in multiple locations. Here's my dilemma, normally I plug my phone in at night upon my windowsill at my apartment. I live in Duluth and recently we have experienced some really really cold weather and there was condensation that leaked from the window to the windowsill. My phone was not soaked and there is really no sign of water damage upon inspection of the circuitry. However when starting the phone on battery it was in a bootloop where it would start to the OS, wouldn't get a signal and reboot. It is stuck in a reboot loop, I even odin a stock restore of 2BOGS as i was able to boot into recovery my phone would still be in a boot loop updating apps. When I plugged my phone straight into the usb charger there was some hiss from the speaker and the usb port had a burning smell. It rebooted a couple of times and now the phone wont turn on at all. So I ask is it possible to replace the usb flex port and then it might work again or is the motherboard fried? Could I possible have a bad battery? i have two that i swap out but they have both been recharged alot. What is my best option? I'm decently tech savvy and would like to salvage this phone if possible considering Samsung doesn't sell the developer edition anymore. Could i just swap the motherboard into another samsung 910V and hope that my root remains? is there anyway to transfer the root to a new phone? Any help would be greatly appreciated, i am quite desperate at this point. I will be happy to provide you with any information I can, please let me know if you need anything further.
Thanks Dev Community!
Click to expand...
Click to collapse
good luck
IF you can swap the board to another phone, your root would remain. However, I would start small first. Get a replacement USB flex port, install, disconnect the speaker, pray, then boot. Hopefully, it will play nice and not exhibit boot loop. I know that you said you used odin to restore a backup. After restoring the back up and Android "Upgrading Apps," when it goes into boot loop, are you able to enter recovery and clear cache/dalvik cache then reboot into system?
I was listening to a podcast and out of nowhere my phone turned off. I tried to turn it back on, but it keeps getting stuck on the LG start up screen (almost like a bootloop). I manged to get it to turn on once and it turned itself off after a couple of minutes. I tried taking the battery out, but that didn't help. Any help would be greatly appreciated.
I looked into it more and found out it happens to a lot of people. Im going to try to get a replacement phone.
I have a question about the warranty though. Apparently they may not fix the phone if there is physical damage to it (because they cant tell if its your fault it broke). My screen has around 5 cracks on it. Has anyone tried to get lg to replace/fix your phone with physical damage to it? If so how did it go?
Just try it. Worst case is they send it back
If you are lucky the bootloop gets fixed and they ask your if you want to get the screen replaced for some $$. (Don't know the real numbers but frontscreen should be around 50$)
And don't listen to the service staff. The repair team from LG decides if your phone is getting repaired.
Most common mistake by too much people.
I had the same problem with my Lg G4. I took it to AT&T Service Center and they wanted to replace it. However, I have important stuff saved on the phone. Do you think they can download or recover the data? Is it possible to do? I would think they know how, but just wondering if anyone knows for sure.
Tiger78232 said:
I had the same problem with my Lg G4. I took it to AT&T Service Center and they wanted to replace it. However, I have important stuff saved on the phone. Do you think they can download or recover the data? Is it possible to do? I would think they know how, but just wondering if anyone knows for sure.
Click to expand...
Click to collapse
If you saved it to the sd card then you are fine. If not you can ask them if they can. I'm not sure if they would be able to or not
Hi all, ok tonight/this morning at work while on my break i went to do my usual thing of having food and watching a tv show via cartoon hd about 2mins in and my phone switched off.....now i thought it was dead so plugged in the charger but no led light, or screen on to say its charging.....i did a bit of googling and find out about the bootloop thingy buuuuut mines not looping, its swtiching on to the LG logo [i did the bootloader unlocker thingy etc so it says tha in the top corner] then it goes off.......i also get pulsing blue led lights too.....if i press, hold the power button after i get nothing, i have to take the battery out and then its rinse and repeat
Hi,
Same thing happened to me today. I was taking a shot and it switched off and same scenario.It seems that we had encountered an bootloader brick in which our device enters in some special bootloader mode in which when you connect it to the computer in the device manager it shows up as Qhsusb_bulk. I read the whole internet and there is a similar brick with G3 the guys were able to fix it. Even there is a tutorial on how to do this which I think is applicable to our device. I was able to install the required drivers and etc. but there is one big problem - I followed the guide and came into one serious problem - we need a special mbn file so we can recover our device and the sad thing is nobody on the internet doesn't have it still. There are many people like us who got selfbricked G4 and cannot fix it without this file. Please if somebody can help us please share the file so we can fix our devices. THANK YOU !
Link to the g3 unbrick guide
ive seen lots about the bootloop issue, but the thing is mine isnt doing a loop [i have to take the battery out/ pop it it back in, to switch it on then after 10-20 seconds on the LOGO it turns off
thewhisper said:
Hi,
Same thing happened to me today. I was taking a shot and it switched off and same scenario.It seems that we had encountered an bootloader brick in which our device enters in some special bootloader mode in which when you connect it to the computer in the device manager it shows up as Qhsusb_bulk. I read the whole internet and there is a similar brick with G3 the guys were able to fix it. Even there is a tutorial on how to do this which I think is applicable to our device. I was able to install the required drivers and etc. but there is one big problem - I followed the guide and came into one serious problem - we need a special mbn file so we can recover our device and the sad thing is nobody on the internet doesn't have it still. There are many people like us who got selfbricked G4 and cannot fix it without this file. Please if somebody can help us please share the file so we can fix our devices. THANK YOU !
Link to the g3 unbrick guide
Click to expand...
Click to collapse
on G2 you get security boot error phone is detected as QHUSb_BULK. on G2 the fix was to enter download mode. in G2 vol up then plug usb.
using TOT method and flash tools . flash stock firmware fixed my soft brick.
not sure about the file you mention, maybe you do need it..
jamious-daywalker said:
now i thought it was dead so plugged in the charger but no led light, or screen on to say its charging.....i did a bit of googling and find out about the bootloop thingy buuuuut mines not looping, its swtiching on to the LG logo [i did the bootloader unlocker thingy etc so it says tha in the top corner] then it goes off.......i also get pulsing blue led lights too.....if i press, hold the power button after i get nothing, i have to take the battery out and then its rinse and repeat
Click to expand...
Click to collapse
I have the issue. I don't do anything special but my phone reboot and stuck on lg logo. But now my phone doesn't want to boot. Sometimes he detect when I'm trying to charge it but often not. Yesterday I boot on download mode and recovery but today it's impossible... I think I have some hardware issue ? Or software with the bootloader...
I don't know how to fix that without access to download/recovery mode :crying:
Same here. Sometimes it boots into recovery/download but most of the times it doesn't. It's a hardware problem I think as LG officially confirmed that there were problems during the building proccess of the first G4 series. I don't want to sound bad but soon or later all phones built before october last year will get into bootloop. I was hoping it won't happen to me - I'm very light user with only light standart apps with no games and other heavy stuff, so the problem wasn't caused by overheating by heavy multitasking. Anyway it happened and I'm pretty sure it's harware related but if somebody can provide the tot and mbn files I will be more than happy to try the g2/g3 unbrick method. The main problem is that these files are not available for h815. I found on other forum tot files for other variants than h815 So if somebody have the tot filesfor h815 please share so we can try to unbrick our G4. Thanks!
same thing heppened to my g4 this week. i called lg last night and they agreed to repair it. i'd just gave them a call.
I sent mine for repair today. I hope they will agree to repare it even that it's with unlocked bootloader and with rooted custom rom !!! What you think ? Will I have problems with them because of that ?
Happened with my phone as well. It was rooted so i was hella scared if they didn't accept my phone. But soon they told me phone's motherboard has gone bad and will be replaced. Got my phone with a brand new motherboard after a couple of hours.
P.s. all your data will be gone
Sent from my LG-H818 using XDA-Developers mobile app
clotveins said:
Happened with my phone as well. It was rooted so i was hella scared if they didn't accept my phone. But soon they told me phone's motherboard has gone bad and will be replaced. Got my phone with a brand new motherboard after a couple of hours.
P.s. all your data will be gone
Sent from my LG-H818 using XDA-Developers mobile app
Click to expand...
Click to collapse
So the same problem just happened to my lg H815 with unlocked bootloader, am really f***ed without my phone, gonna call LG UK tomorrow, anything in particular I should say? also looking for solutions I saw many people are starting to have this issue now too - any official comments from LG?
P.S. if you have an LG G4 you should start backing up all your data now
This literally just happened in the last 15 minutes to me as well. Random reboot right after I woke up the phone and now stuck on the LG splash screen. Light user here, never did anything with the phone that would have heavily stressed it physically or computing-wise, so I also concur it's an inevitability for earlier runs of G4 phones.
Luckily, I backed up everything through TWRP last Thursday by chance because I was updating Xposed to the latest version and swapping to a faster 128GB microSDXC. At worst, I might have lost a handful of unimportant text messages.
Not worth the time to try to figure out any cheap fixes myself, I just got done submitting a repair request to LG.
I ordered LG G4 H815 and I hope to not see any kind of these issues
irishlad99 said:
So the same problem just happened to my lg H815 with unlocked bootloader, am really f***ed without my phone, gonna call LG UK tomorrow, anything in particular I should say? also looking for solutions I saw many people are starting to have this issue now too - any official comments from LG?
P.S. if you have an LG G4 you should start backing up all your data now
Click to expand...
Click to collapse
Guy at service center said its internally communicated all LG G4's motherboard will have to be changed at least once.
And just say you dont know what happened exactly. Slept and in the morning my phone won't work
clotveins said:
Guy at service center said its internally communicated all LG G4's motherboard will have to be changed at least once.
And just say you dont know what happened exactly. Slept and in the morning my phone won't work
Click to expand...
Click to collapse
at least once?? many had sent phone , then again having bootloop after repair..???
raptorddd said:
at least once?? many had sent phone , then again having bootloop after repair..???
Click to expand...
Click to collapse
I have got my phone repaired for like 4-5 times. 3 times motherboard change, 1 time display change and 1 time volume button pannel change.
clotveins said:
I have got my phone repaired for like 4-5 times. 3 times motherboard change, 1 time display change and 1 time volume button pannel change.
Click to expand...
Click to collapse
all under warranty?? not counting display? or did you get dead pixel?
raptorddd said:
all under warranty?? not counting display? or did you get dead pixel?
Click to expand...
Click to collapse
Yup. All under warranty and counting display replacement as well. No dead pixels as well and phone was rooted once during motherboard replacement
Sent from my LG-H818 using XDA-Developers mobile app
Hi all,
so here is my problem.
Day before yesterday i had a perfectly working LG g4 H815 model with s/n 511 running on firmware v20h, when i decided to root it and install some mods.
so i flashed TWRP, installed xposed and xtrememusic mod. the phone booted normally after installing these. i didn't install any modules under xposed. the phone worked perfectly for two days. however today morning it hanged while taking photo with the camera app. when restarting it got stuck at LG logo for long time. My brother(who doesn't have any technical knowledge) pulled out the battery and restarted. Again it got stuck at LG logo. thinking somthing wrong he again repeated this only to find that it didn't power on at all this time. No LG logo no notofication light nothing.
Tried charging it(although battery was aroung 60-70%), pressing power button removing the battery. still nothing. the phone is not at all powering up.
However when i connect it with USB cable with laptop, laptop makes sound of getting usb connection detected. i took it to a service centre.
the technical guy there told that IC may have been faulty. he told me that motherboard needs to be replaced. however unofficially he may try heating the IC to get it booting.
What should i do now? Is the IC really fried. had the rooting and installing mod caused it?
Please help.
PS- the phone is imported and cannot be sent back for warranty purpose.
I think you are experiencing the dreaded LG G4 bootloop. I don't think rooting or modding caused a software problem. It "may" have caused a hardware problem simply because it generated enough heat to loosen the IC that little bit that initiates the problems you are describing. I rooted and installed the stock image in Nov 2015. Two weeks ago the phone froze - restarted and then could not be booted. LG sent me a Fedex label and I sent it off. Ten days later I received the same phone back. I assume they replaced the mainboard.
You should contact LG directly. I saw a class action suit that was called off because it appeared that LG will fix this particular problem (failed mainboard) out of warranty. Anyone please correct me on this if I'm wrong.
dsteinschneider said:
I think you are experiencing the dreaded LG G4 bootloop. I don't think rooting or modding caused a software problem. It "may" have caused a hardware problem simply because it generated enough heat to loosen the IC that little bit that initiates the problems you are describing. I rooted and installed the stock image in Nov 2015. Two weeks ago the phone froze - restarted and then could not be booted. LG sent me a Fedex label and I sent it off. Ten days later I received the same phone back. I assume they replaced the mainboard.
You should contact LG directly. I saw a class action suit that was called off because it appeared that LG will fix this particular problem (failed mainboard) out of warranty. Anyone please correct me on this if I'm wrong.
Click to expand...
Click to collapse
Hi thanks for the help.
But isn't the dreaded bootloop is that where the phone is stuck at the LG logo. Mine isn't booting at all. And the bootloop problem is due to big cores or such and not due to ic?
Mine wouldn't start at all - it bootlooped once for about a split second - then it was dead
Same is the problem with me. Bootlooped twice and then its completely dead. I have tried contacting Lg UK. Lets see what they say.
Ok so i got a reply from LG and they suggested me some steps to take (which are obviously not useful as it is completely dead). however they have also told me that they are willing to help me and asked me about details of purchase etc and "whether it was rooted".
so what should i reply rooted or not? will they detect it as it is dead.
dbzgoku said:
Ok so i got a reply from LG and they suggested me some steps to take (which are obviously not useful as it is completely dead). however they have also told me that they are willing to help me and asked me about details of purchase etc and "whether it was rooted".
so what should i reply rooted or not? will they detect it as it is dead.
Click to expand...
Click to collapse
Sorry to be late on reply. I advise to not answer question whether phone was rooted. Here is my reasoning:
1. This problem is widely occuring - only a tiny percentage of people root their phones therefore question is irrelevant.
2. The problem is known to be that an IC becomes loose most likely due to heat - a better question would be - do you place the phone on a hot dashboard with GPS running while you are charging?
dsteinschneider said:
Sorry to be late on reply. I advise to not answer question whether phone was rooted. Here is my reasoning:
1. This problem is widely occuring - only a tiny percentage of people root their phones therefore question is irrelevant.
2. The problem is known to be that an IC becomes loose most likely due to heat - a better question would be - do you place the phone on a hot dashboard with GPS running while you are charging?
Click to expand...
Click to collapse
thanks for the reply (although late). i have already sent the phone to LG replying as no root. Lets hope they repair it without any problems.
second i didnt do anything of anysort like placing on hot dashboard or such. one day while opening the camera app it decided to just hang and later on die on me.
I hope you didn't think I was saying you might have done something that would overheat your phone such as my second example. I was trying to come up with an example reason the IC loosens. Even if you did that the phone should survive such conditions. Let's hope the replacement motherboards somehow do better. My guess is that the soldering job is fine, the problem is probably bad design that doesn't "vent" the heat from chip.
dsteinschneider said:
I hope you didn't think I was saying you might have done something that would overheat your phone such as my second example. I was trying to come up with an example reason the IC loosens. Even if you did that the phone should survive such conditions. Let's hope the replacement motherboards somehow do better. My guess is that the soldering job is fine, the problem is probably bad design that doesn't "vent" the heat from chip.
Click to expand...
Click to collapse
so what do you suggest after repair should i keep it or sell it? Lg g4 is no doubt the best phone when considering the value for money. no phone even twice in price comes close in camera and screen quality especially. but the unreliability of this phone has made me to consider selling it as soon as i get it back.
I'd keep it if your new board is high serial
lukem99626 said:
I'd keep it if your new board is high serial
Click to expand...
Click to collapse
Well my old board was also high serial, beginning with 511
I'm going to take my chances - it's a great phone until it bootloops. I'm going to avoid scenarios best I can that could result in the phone heating up inside. That would be charging only if absolutely necessary while in my ProClip dash mount if the car is hot, using backup battery after depletion instead of charging more often etc. Thinking back I rarely put the phone into heat inducing situations - normal use results in the IC becoming loose at the 1 year mark. If mine bootloops exactly a year from now and LG fixes it again I'm an LG fan. If they blow me off no more LG.
I really regret not paying it off early and taking the $15/month deal for an S7 Edge last month
dbzgoku said:
Well my old board was also high serial, beginning with 511
Click to expand...
Click to collapse
I mean like 611 ect thats what i got from lg
dsteinschneider said:
I'm going to take my chances - it's a great phone until it bootloops. I'm going to avoid scenarios best I can that could result in the phone heating up inside. That would be charging only if absolutely necessary while in my ProClip dash mount if the car is hot, using backup battery after depletion instead of charging more often etc. Thinking back I rarely put the phone into heat inducing situations - normal use results in the IC becoming loose at the 1 year mark. If mine bootloops exactly a year from now and LG fixes it again I'm an LG fan. If they blow me off no more LG.
I really regret not paying it off early and taking the $15/month deal for an S7 Edge last month
Click to expand...
Click to collapse
Well lg did mention in my communication with them that this carries 2 year warranty.
lukem99626 said:
I mean like 611 ect thats what i got from lg
Click to expand...
Click to collapse
Didn't know that serials have gone so high
dbzgoku said:
Didn't know that serials have gone so high
Click to expand...
Click to collapse
I brought a g4 in the new year sale it has the serial of 611 i had a 601 few months back i returned it ran hot and laggy the 611 one is cool running and lag free so i think something changed
Hi
The other day I was looking for cell ID info on my LG G4 that I have had for a long time in the "hidden menus". I accidentally clicked on the radio test and the screen froze up. I tried to get out of it, but noting would work, not even the power button. After a few minutes, I saw the power off sequence. When I went to turn if back on, it would not power on. I plugged it in, no charge. I tried to boot to recover, nothing. I have the service manual for the h815 variant which differs from mine. I do not have a boardview or anything.
I know trying to permanently fix it is a lost cause, it is old and it had other problems, such as the headphone jack not working even after I replaced it, and the read camera's autofocus being stuck after I replaced it with a cheap knockoff. However, I want to get it running long enough to get important things off of it. I was foolish and a few of my 2FAs are only on that device, and while I have gotten most of them switched to my alternate, I need to make sure to get the rest. I'm not sure which troubleshooting route to follow: Power? Crash/No Boot? No charge? I would follow each but some of the differences between the board I have and the service manual includes a few of the test points I need. Currently I have to attach wires to my multimeter leads to get small enough tips.
If anyone has anything that can help me get this running for a bit, let me know please.\
edit: biggest problem is I don't know how to tell from the schematic what pin is which on the board
Catt0s said:
Hi
The other day I was looking for cell ID info on my LG G4 that I have had for a long time in the "hidden menus". I accidentally clicked on the radio test and the screen froze up. I tried to get out of it, but noting would work, not even the power button. After a few minutes, I saw the power off sequence. When I went to turn if back on, it would not power on. I plugged it in, no charge. I tried to boot to recover, nothing. I have the service manual for the h815 variant which differs from mine. I do not have a boardview or anything.
I know trying to permanently fix it is a lost cause, it is old and it had other problems, such as the headphone jack not working even after I replaced it, and the read camera's autofocus being stuck after I replaced it with a cheap knockoff. However, I want to get it running long enough to get important things off of it. I was foolish and a few of my 2FAs are only on that device, and while I have gotten most of them switched to my alternate, I need to make sure to get the rest. I'm not sure which troubleshooting route to follow: Power? Crash/No Boot? No charge? I would follow each but some of the differences between the board I have and the service manual includes a few of the test points I need. Currently I have to attach wires to my multimeter leads to get small enough tips.
If anyone has anything that can help me get this running for a bit, let me know please.\
edit: biggest problem is I don't know how to tell from the schematic what pin is which on the board
Click to expand...
Click to collapse
Sounds like the ilapo but as you have modified the hardware it can be everything of course . anyways it wouldn't hurt to try some of the Bootloop fixes which you can find in my signature . Your best chance might be flashing the TWRP version for the ilapo and trying to load the recovery. Another option is of course to get into download mode and use salt to backup the user data partition.
Ilapo TWRP (when your device is unlocked only):
https://leech.binbash.rocks:8008/TWRP/ILAPO-O/
SALT (included in mAid / fwul): http://bit.do/FWULatXDA
Sent from my OnePlus 7T Pro using XDA Labs