Database Users

Something bricked my phone.

My phone, which I've had since waiting in line on March 24th quit on me today. I'm not sure if it was the culprit but, I installed a program called Lookout mobile security last night 5/6. When I started the phone this morning put it on the table, got some java and when I got back nothing..no buttons working...ok..no problem tried a soft reset...nothing..ok now starting to get worried. pluged into power source..boot up screen. whew..low battery. then blank, a few seconds..boot up screen AGAIN!..by now I'm in full freakout...Attempted to calm down.. didn't work..thought ok..most everything is backed up..lets do a hard reset..didn't WANT to but anyway! Did the hard reset .. Still had the same problem...Had to pinch myself HARD to make sure this wasn't a nightmare. Went to the TMobile store and the associate put me in touch with technical support (they were Super) Going to give me a new phone but, have to wait until next Friday to get it...and then tweaking and rebuilding it to what I want...I should have been ready for this coming from an iphone...All it takes is one $%@# program again, not saying it was the one mentioned above but, one with a malicious code or something that destroyed over five weeks of building a phone from scratch. Sorry about the rant... I still LOVE this phone. .

so you couldn't even boot it in to the bootloader? wow! Maybe you should flash HardSPL before trying to install that program again as there is far less chance of bricking it if you have HardSPL installed. Even if the rom gets completely stuffed, you can still boot it and reflash from SD.

All I can recommend is install a ROM via Micro SD card and maybe doing a Task 29 before you reinstall a ROM
for US Tmobile: http://forum.xda-developers.com/showthread.php?t=653614
For Leo: http://forum.xda-developers.com/showthread.php?t=609477
Or maybe try this thread: http://forum.xda-developers.com/showthread.php?t=668347
If those don't work then I don't know what else to recommend

They want my old phone back once I get the new one so, I'm going
to let them have it just as I turned it on yesterday. Let them
find out what the problem was created by.

I was about to install that "lookout" software...but after reading this I might as well hold on.

did you leave it on the charger overnight or did you just turn on your phone in the morning.
if you didnt have it charge all night, maybe all you needed to do was leave it on the charger a little longer before starting it back on.
i noticed that some phones with a dead battery and on the charger will sometimes not stay on until it has gotten a minimum charge on the battery.

Damitu said:
..most everything is backed up..<SNIP>...and then tweaking and rebuilding it to what I want...
Click to expand...
Click to collapse
Setting up the new phone shouldn't be a big deal if you did actually backup; just stick the old microSD in the new phone and run whatever backup app you had on the card.

I put it on the power supply and it is in the constant loop of
the first screen that appears. I am going to seriously look into
HardSPL. Thanks to all the good input from everybody.

Well now even customer service is at a loss. They cannot phantom why why two separate phones have the same problem. While I had CS on the phone we went thru various senario's to try to get the phone to operate properly. I even had them give me a new SIM card and that did not work...I suggested the problem might be the battery as it could have gone bad. You guys think the phone is playing hard to get--try to find a replacement battery! No stores within a 20 mile radius had one in stock....! Needless to say they are going to ship me yet another phone. plus a new battery and hopefully it will take care of the problem. The sales associate did a hard reset on both my old and the new phone without results so that unfortnately is not a viable solution. Now I am in the game I hate the most........The waiting one! ..

c_legaspi said:
did you leave it on the charger overnight or did you just turn on your phone in the morning.
if you didnt have it charge all night, maybe all you needed to do was leave it on the charger a little longer before starting it back on.
i noticed that some phones with a dead battery and on the charger will sometimes not stay on until it has gotten a minimum charge on the battery.
Click to expand...
Click to collapse
^^ what the op says above. This happened to me (and my gf as well) on our HD2s. The first time (mines) this happened, i hooked it up onto my car charger and immediately tried to turn it on.. it would go onto the TMO screen, but quickly shut down and loop. After realizing I may be trying to jump the step, I unhooked it from the charger, took the battery off, put it back on, hooked it back onto the charger and let it sit for about 10-20 minutes charging. Turned it back on and viola! It wasn't a brick.. I can almost guarantee this is your problem.
But I may be wrong lol...

So, now after 2 replacement phone sent to me, I find out that
it was the battery all along. Problem is that after the second phone
arrived and I had the same problem I called customer service and
explained it to them....They said a battery would be sent next day
air...Ok...called the next day and was told that the rep never sent
in the order...Long story short....I've almost been without my phone
for two weeks now and, all I need is a frelling battery.
Problem is there are NONE around me..I've tried every tm store in
the area, All radio shacks batteries plus...you name it....
I am being sent a battery UPS ground...could take 7 more days.
Just took the battery from my fiance's phone and it works
so, right now I would pay a ransom for a battery just to have my
phone back!

I had to do a hard reset after downloading that lookout trial.

at this point I don't know what caused it..Has anyone ever heard
of an application causing the battery to go bad?...I worked really
hard to keep the battery I had in good condition.. I hope UPS
delivers soon!

This is odd I have used Lookout Mobile on my phone since I had it. Mind you not had it for long, since April but still its never bricked or did anything that hindered the phone. I maybe another program.

Please help. Possible Debranding gone wrong

Hi Guys (and possibly even Gals)
I haven't been on in quite some time so forgive me if I'm posting this in the wrong place. I would also like to apologise in advance for the length of this post.
I really hope somebody can help. I used to have a branded Vodafone SE X10i which I debranded for obvious reasons (I'm not bloody waiting for a lifetime for updates because vodafone and there customer service are ****e) and everything was fine and dandy in the world. However I then lost my phone and had to have another issued which of course was branded but that didn't bother me because at the time it had the latest software on it. When SE sent me an email to say that 2.1 was here I was of course over joyed, that is until I found out that vodafone were once again with holding it for "testing" purposes for an apparently undeterminable amount of time. Naturally my "Voda-rage" came back with a vengance and I immediately set out to de-brand my handset once again only to find that with recent updates SE had made to PC suite and SEUS the old method I had discovered no longer worked. I tried a different method involving switching files during the update download (using SEUS) of which there is a tutorial which I have put the link to in my signature. I was unable to get this method to work for me and after 10 attempts gave up and went to "www.fastgsm.com" after reading a comment from someone having similar problems.
Now this is where I have the problem.
I paid for the debranding and they let me download a client that was supposed to flash the phone for me and put the generic uk software onto it. Everything went fine and when the program has finished it told me to unplug my phone and start it up, the only problem is that I can't, the phone will no longer switch on. The screen clearly illuminates slightly but the phone never actually starts. I did this last night and thought that perhaps I just needed to wait a while but after leaving it all night the battery just drained and the phone never started up. The phone also doesn't charge anymore, it charges enough power to try and switch the phone on, pauses to switch the phone on and of course never starts up and just sits there till the battery drains again and the cycle continues. I have e-mailed the site but have not heard anything back and I'm just hoping that somone out there is able to come up with a solution that doesn't include claiming on my insurance again!
Any and all help or suggestions will be greatly appreciated (apart from the dumb ones....only kidding please help LoL)
Kind Regards
John Murchie

Aaaahh you should have read all the threads here first! The old method for debranding using SEUS doesn't work anymore.
You could have used the flash tool (free) method to flash the X10i 2.1 Global firmware or another X10i version, just do a quick search here and you'll find different files to download.
Now it may be too late because you need your battery to be at least 50% charged when you flash a phone, might be worth a try, but remember, the X10 won't charge in flash mode (when you boot holding "Back").
I hope someone else has a solution for the battery problem, if you can get it charged, using flash tool your problem is solved.

Thanks for you input. I did look around here briefly for a solution but after trying to sort it out myself I eventually gave in and just went with the easy option of paying. only cost me £6 as well so it wasn't all that bad! I'm not really sure how I can charge the battery up either as I don't know anyone who has the phone that I could get to charge it or swap batteries. Could try Vodafone but I don't see them being all that helpful really LoL
Kind Regards
John Murchie

When you plug the charger in do you get the charge light ?
Sent from my spectrum zx

When I plug it into the charger I get a flashing red light and then after a few minutes it becomes a constant green light and then a few minutes later the light goes out and it tried to switch itself on. A few minutes later ( I assumes because the battery gives out) the screens goes dark again and the red light starts flshing and the process starts again!

Veeger said:
only cost me £6 as well so it wasn't all that bad!
Click to expand...
Click to collapse
To be fair, it doesn't come much easier than putting the phone in flash mode and running a flash tool. Have you taken your battery out for at least 10 seconds?, if not do so, put it back in and turn the phone on.

Evidentely I'm more dense then most people then, aren't I. I have tried removing my battery for periods of time but unfortunately to no avail. Thanks for you input!

If the battery is so drained that it can't last the few seconds that is needed to boot to the charging mode then I would suggest you go the store and ask if you can charge the battery in their display phone. 10 minutes will do to get you going.

Yes I was thinking that, only problem is the phone shops around here can be rather ****ty to say the least LoL. I'm going to pop into town and give it a go though. Be a shame to have to claim on my insurance!
I have heard back from the site that supplied the program and they asked me to send the log file and then got back to me saying that everything worked fine on there end!
Obviously it didn't or I wouldn't be having this issue >_< LoL

Dead Nexus S

Hi guys,
Tried searching for my problem, but though I found some similar stuff, noone had quite my problem.
I was checking my Nexus S after a trip and it was with the 'emergency only' message. This sometimes happens to me, not sure if it's due to the roaming activation or caused by a bug where the radio subsystem crashes after a long period without network.
Anyway, I proceeded to my common solution: Turn off and reboot.
Except that after the phone was off, it would not turn on.
It doesn't even vibrate. It doesn't show anything when connected to the wall socket or to the computer. It's just completely dead.
Now, I'm not even sure if this is a hardware or software problem. Any idea on how I can debug this?
Here's what I've tried:
1. Take the battery out: no changes (even tried leaving it out overnight).
2. Charge the phone overnight: no change.
Next step: I'll go to a store and try a different battery... meanwhile I'm without my primary phone which sucks... Can anyone help?
Thanks in advance!

Try booting your phone into the bootloader. Hold the power button and volume up button simultaneously.

If it is not the battery, i can see what else you can do, a "dont turn on" phone is a dead end...
Sent from my Nexus S using XDA App

Guess I'm screwed... I had some pics and other data there... anyway I can get it back? i.e. is there a way to remove the internal sd card?

saranyan said:
Try booting your phone into the bootloader. Hold the power button and volume up button simultaneously.
Click to expand...
Click to collapse
Was this tried? Cause if that works there's hope for you yet.

BlackHawkA4 said:
Was this tried? Cause if that works there's hope for you yet.
Click to expand...
Click to collapse
Yup, it was one of the first things I tried. No sign of life... I can't get a single sign that the phone is even being powered. It's like the battery was taken out.

nunocordeiro said:
Yup, it was one of the first things I tried. No sign of life... I can't get a single sign that the phone is even being powered. It's like the battery was taken out.
Click to expand...
Click to collapse
Sounds like something is wrong with the hardware then. Have you brought it the store? Might need to get a new one on warranty.
I have the same issue with my old Blackberry 9000. It worked fine up until I stopped using it. Left it in a drawer for a few months. Went to sell it to Sprint. Wouldn't turn on. No LED, no nothing. Worked fine months before when I was still using it. To this day I have no idea what's wrong with it and it doesn't turn on.

Why not get an external battery charger and charge the battery up and then test it?

All true, and after trying with a new battery I'll have a bit more information.
But what strikes me as odd is that I didn't leave it in a drawer - I didn't even let the battery run down... it was just a damn reboot! I shut it down, and then couldn't power it up again (try and imagine THAT happening to you). It would be odd for the battery to be sucked dry all of a sudden...
I have a feeling that there's something else... maybe while shutting down something burned out in the power circuitry....? =S
No one ever heard of anything like what I'm experiencing? It sucks to be the only one!
Thanks for all the help so far, guys!

If you can get to download mode nothing is lost. Just flash new image via Odin.
Sent from my GT-I9000 using Tapatalk

nunocordeiro said:
All true, and after trying with a new battery I'll have a bit more information.
But what strikes me as odd is that I didn't leave it in a drawer - I didn't even let the battery run down... it was just a damn reboot! I shut it down, and then couldn't power it up again (try and imagine THAT happening to you). It would be odd for the battery to be sucked dry all of a sudden...
I have a feeling that there's something else... maybe while shutting down something burned out in the power circuitry....? =S
No one ever heard of anything like what I'm experiencing? It sucks to be the only one!
Thanks for all the help so far, guys!
Click to expand...
Click to collapse
Never heard of that happening, but it's a possibility... Still, I would first attribute it to a bad battery and try that first
Sent from my Nexus S 4G

With a new battery (that works on another nexus S) still no luck. =(
I still can't find anyone with this problem. I feel like the unluckiest idiot on Earth.
I assume I can't get to download mode since I can't even get the phone to report it is charging (it used to do that even if off). Do you want me to try anything, though? I'm open to suggestions until Monday. Then I'm taking it to Samsung. Hope they can recover my pictures.
BTW, my receipt doesn't have the IMEI and a customer service rep told me I need it on the receipt or they won't give me free support. How can I get it with the phone off?
Regards and thanks to all who responded,
Nuno

nuno, if you cant power on even with a new charged battery, then it's a harware fault and nothing can me done... =o\
but thanks for the advice, i never thought about the data in sd card, i guess i should make some backups! =o)

nun
BTW said:
Look under your battery. IMEI should be printed on the sticker beneath. Good luck!
Click to expand...
Click to collapse

I've got the same problem: dead nexus s after a reboot. It says "no service" emergency call does not work. I tried pretty much everything like switching the battery, recovery mode, plug it in, etc. I even updated its image to the latest I've got access to. No luck. I'm already contacting samsung to get it replaced.

odd things can happen ... it sucks

igorgatis said:
I've got the same problem: dead nexus s after a reboot. It says "no service" emergency call does not work. I tried pretty much everything like switching the battery, recovery mode, plug it in, etc. I even updated its image to the latest I've got access to. No luck. I'm already contacting samsung to get it replaced.
Click to expand...
Click to collapse
Did you try flashing a different rom? Or radio/

I haven't experienced this myself but I'm very interested on what happened. Did you guys flash any custom ROMS? or Radios for that matter?

This looks very similar to what i have. I just got my nexus s GT-i9023, it doesn't boot into fast boot, recovery, download mode or normal. The most activity i have got so fare is when i take the battery out, put it back it, and try turn the phone on it will sometimes flash then do nothing. I have looked every ware. When i use "./platform-tools/adb get-state" it returns "unknown". Any help would be great.
What i think i did was this:
- Unlocked bootloader, this worked
- restart
- installed clockwork mod with fast boot, this worked
- wiped data
- wiped cache (correct me if i spelt that wrong, or anything else)
- flashed cyanogenmod, this got an error but i didn't notice it the first time and i can't remember what it was.
- flashed gapps, this didn't work, when i restarted the phone it said that the installer for gaps had quit.
- restarted
- flashed cyanogenmod again, this is when i noticed the error
- restarted, didn't change anything
- wiped data
- wiped cache
- flashed i9020t recovery, this http://forum.xda-developers.com/showthread.php?t=1061855 i think this is what stuffed it up because my phone is i9023
- wiped data after flashing, thats what it said to do, i thought it was strange but i went along with it.
- wiped cache
- reboot
- now doesnt work.

Take it to the store where you purchased and claim ignorance!

Note 4 wont turn on, "cannot boot normal" and "downlaoding target, dont turn off"

Note 4 wont turn on, "cannot boot normal" and "downlaoding target, dont turn off"
Its a Note 4 SM-N910F, Android 6.0.1, BB N910FXXU1DPE2, kernel 3.10.40-7733605 [email protected] #1
i feel I have tried everything... History:
Phone has been working fine for a year, upgraded to 6.0.1 no problems about 2 or 3 months ago. no new apps installed. Last week it started getting very laggy, keyboard strokes took for ever to register. I thought, ok, time to to a factory reset to blow out any old cobwebs. Did it via the menu. However the phone froze midway thought. I left it for an hour and then pulled out the battery. I popped it back in and it performed the reset without me having to press anything. Cool, thats good I thought.
Now I was going to change the battery, so I powered off as normal and put my other 2 week old original samsung battery in, and it would not power on. After a few reinsertions it powered back on. I though i have to do another reset. So I tried, and it would not reset. It just died. I cant restart the phone, it dies. If I shut it down normally. it wont turn on back on, I have to take out and reinsert the battery multiple times, holding down the powerbutton between to discharge. this can take up to 10 tries now. Sometimes it will go th the unable to bot in normal mode and "downloading , do not turn of target, but it will stay there for ever, more than an hour.
Every 15-20 tries it would turn on, let me get in via pin, only to start freezing up within a min, and then die again. Somewhere I read that a guy hada similar problem, and he used wakelock and that worked, on level 4. I managed to download that and used it, and hey presto, it works!
Now I had to power down the phone for a reason, and it took me about 30 min of battery and powerbuttonholding before it managed to boot up, and I was quick enough to start wakelock on level 4.
It wont boot in to safe mode, it wont boot in to recovery mode, it wont boot in to the factory reset mode. Its the same with either battery, and different cables.
Any ideas what i can do here, or what could be wrong? I havent gotten it wet or banged it.

I am having the same exact issue on a N910A. Phone was functioning correctly and in December it started getting really laggy. Performed various resets, purchased new battery. Still laggy. Up until two weeks ago the phone was slow but now it will not power on . The phone will not charge as well.

Mine did same, 6 months old, not rooted stock firmware. Locked up yesterday, couldn't do anything. Pulled battery and restarted. Samsung logo comes on screen goes black for android boot then it hangs with blue led flashing. Nothing I do gets it past that point. Tried safe boot but it doesn't fully launch with correct button combo and volume up. In the end I re-installed firmware using Keis. All went well, everything as per youtube tutorial. Except one thing, at end of download phone didn't re-start. Still can't get it to boot, any ideas?
Edit: Lock up didn't coincide with any new apps being loaded or updates of existing. Only change was a week ago which was an automatic update of the stock firmware (Lollipop)

armstrongracer said:
Mine did same, 6 months old, not rooted stock firmware. Locked up yesterday, couldn't do anything. Pulled battery and restarted. Samsung logo comes on screen goes black for android boot then it hangs with blue led flashing. Nothing I do gets it past that point. Tried safe boot but it doesn't fully launch with correct button combo and volume up. In the end I re-installed firmware using Keis. All went well, everything as per youtube tutorial. Except one thing, at end of download phone didn't re-start. Still can't get it to boot, any ideas?
Edit: Lock up didn't coincide with any new apps being loaded or updates of existing. Only change was a week ago which was an automatic update of the stock firmware (Lollipop)
Click to expand...
Click to collapse
are you still under warranty? i sent mine to a samsung center, the guy recognized the problem as the motherboard, said I wasnt the first. That was 3 weeks ago, they are STILL waiting for the parts. They say the Samsung factory are way behind with repair parts, etc etc. I am hoping it will go under warranty. Ill update when I know!

I've been having the same problem that started yesterday morning. I've tried a few different solutions but nothings worked, I get the feeling that my phone is dead and I'm not in warranty either. I'm going to approach Samsung but my guess is they will want more than the phone is worth to repair it. I've read about so many people having the same issues, its horrendous engineering on Samsungs part considering how much their phones cost to start with

neils0911 said:
I'm going to approach Samsung but my guess is they will want more than the phone is worth to repair it. I've read about so many people having the same issues, its horrendous engineering on Samsungs part considering how much their phones cost to start with
Click to expand...
Click to collapse
Your guess is probably correct and I totally agree with you. I seriously think manufacturers do not want their devices to be problem free for more than two years. Probably why they have stopped making phones with batteries that simply pop out.

bonfilet said:
Your guess is probably correct and I totally agree with you. I seriously think manufacturers do not want their devices to be problem free for more than two years. Probably why they have stopped making phones with batteries that simply pop out.
Click to expand...
Click to collapse
Definitely...surely it couldn't have been that hard to make a device with a battery that was still removable on the newer phones. It's frightening how many forum posts I've found with people having their phones just brick out of nowhere (and that's just the note 4). I've given up trying to fix mine, I've tried every method I could find and nothings worked. I can only assume that this problem is simply the motherboard of the phone not working anymore. I'm not even sure what phone to buy now but it certainly won't be a Samsung.

neils0911 said:
. I'm not even sure what phone to buy now but it certainly won't be a Samsung.
Click to expand...
Click to collapse
If you do not care about the camera thera are a lot of rather affordable options which can be tossed in the bin when they start malfunctioning and if their warranty has run out. If you care about the camera being as good as the Note 4's than the range of phones you can buy is quite limited.

mymigi said:
I am having the same exact issue on a N910A. Phone was functioning correctly and in December it started getting really laggy. Performed various resets, purchased new battery. Still laggy. Up until two weeks ago the phone was slow but now it will not power on . The phone will not charge as well.
Click to expand...
Click to collapse
If you are able to boot it into Download Mode then you should Download Stock Rom file for Galaxy Note 4 from Sammobile and Flash it through Odin..
Everything will be OK... ?

Unfortunately, SAMMOBILE does not have the SM-N910A firmware.

mymigi said:
Unfortunately, SAMMOBILE does not have the SM-N910A firmware.
Click to expand...
Click to collapse
You can find here firmware for N910A , 5.1.1 and 6.0.1 : https://simunlockremote.com/firmware-support/

bonfilet said:
If you do not care about the camera thera are a lot of rather affordable options which can be tossed in the bin when they start malfunctioning and if their warranty has run out. If you care about the camera being as good as the Note 4's than the range of phones you can buy is quite limited.
Click to expand...
Click to collapse
I think the camera on the note 4 is absolutley terrible. I might even go so far as to say the pictures are unusable. the applied noise reduction renders everything splotchy, colors are off and its not sharp at all. and Im not talking dark conditions here.
Anyway, my phone was repaired under warranty and is back to working as it should. It was indeed the motherboard, so if you have the same troubles I had, those are your best bets.

I don't think replacement via warranty will be available. I will attempt to power into download mode and verify if I can get it back up and running. If not, a good ole paperweight.

mymigi said:
Unfortunately, SAMMOBILE does not have the SM-N910A firmware.
Click to expand...
Click to collapse
You can download the Firmware from here ..
https://www.androidfilehost.com/?fid=24459283995298017
---------- Post added at 05:43 AM ---------- Previous post was at 05:41 AM ----------
mymigi said:
Unfortunately, SAMMOBILE does not have the SM-N910A firmware.
Click to expand...
Click to collapse
You can download the Firmware from here. .
https://www.androidfilehost.com/?fid=24459283995298017

Sounds like the problems I have: with my first N910F: started with lagging apps / freezing, then random reboots now and then, eventually giving error messages when booting. Finally, now it will only start after the battery has been out for at least 30 minutes, but hangs on error message. When pulling battery out and putting back in it, wont give a single sign of life. Since I was just out of warranty it has been lying around, and I bought a second hand N910F for replacement, sadly its starting to give the same errors too and is just out of warranty too (its currently still working, but with freezes / reboots / and already a event with boot error).
I read It could be memory chips or some power chip on the motherboard, appears to be a common problem. So.... Last month I bought a new motherboard on ebay (chinese delivery, 80€). Received it last week and put it back in; phone is back to life. (putting it in is a very simple task, with iFixit teardown / guide)
Anyway, I love the Note 4 for performance / size / looks, and have been Samsung fan for a while, but this recent breakdowns and information that it is fairly common, has diminished being a fan fairly quickly and I guess the Note 4 will be the last Samsung device for a while after this new motherboard breaks down as well

onno72 said:
Sounds like the problems I have: with my first N910F: started with lagging apps / freezing, then random reboots now and then, eventually giving error messages when booting. Finally, now it will only start after the battery has been out for at least 30 minutes, but hangs on error message. When pulling battery out and putting back in it, wont give a single sign of life. Since I was just out of warranty it has been lying around, and I bought a second hand N910F for replacement, sadly its starting to give the same errors too and is just out of warranty too (its currently still working, but with freezes / reboots / and already a event with boot error).
I read It could be memory chips or some power chip on the motherboard, appears to be a common problem. So.... Last month I bought a new motherboard on ebay (chinese delivery, 80€). Received it last week and put it back in; phone is back to life. (putting it in is a very simple task, with iFixit teardown / guide)
Anyway, I love the Note 4 for performance / size / looks, and have been Samsung fan for a while, but this recent breakdowns and information that it is fairly common, has diminished being a fan fairly quickly and I guess the Note 4 will be the last Samsung device for a while after this new motherboard breaks down as well
Click to expand...
Click to collapse
My phone is also random Rebooting
It also shuts down at 25% of battery remaining, Have you also faced similar issue?

Download the app "Wake Lock" and run the Partial Wake Lock option. Apparently the updated software impacts the CPU. For the restarting issue, put it in the freezer for a couple minutes. You may have to take the battery out once, but it has worked for me every time.

This looks very much like the issue reported here:
https://forum.xda-developers.com/no...-error-fix-t3434335/post72944466#post72944466
There are temporary fixes (wakelock), but ultimately this is a harware issue, and the fix is a new motherboard.
I think that underlying it is a problem with heat affecting the eMMC chip or its connection to the motherboard.
See also:
https://us.community.samsung.com/t5...ePhones/thread-id/12183/highlight/true/page/1
http://www.classlawdc.com/2017/04/25/investigation-samsung-galaxy-note-4-mmc_read-failed-defect/

Hey can u pls get me the stock firmware for n910gddu1dpb4

You might find this interesting. Since I couldn't get mine to power up at all, I called Samsung tech and they quoted me $75 to fix it and they would pay for shipping. I figured it was better then getting another phone off Swappa. 2-3 weeks later i get an email that they are repairing it under warranty at no cost to me. I got a refurbished phone since i know my IEMI number was different. they didn't explain why. Anyway, I got lucky i guess.

V20 VS995 Bootloop (no root, 1CA update)

Today on my way to work I was playing music through my bluetooth and the music stopped. I went to reset bluetooth and it took almost 3 mintues to turn off. When I went to turn it back on, it wouldn't. I powered off and reset the phone. After, it got stuck in a bootloop. LG logo for about 7-8 secs and restarts.
Before the bootloop, I was noticing a few weird things: A notification of USB Options was always up, was saying I was using my phone as a USB Power Supply. If I changed the options it would revert back to USB PwrSply. I noticed the battery life was getting a lot worse. Also, when plugged into Quick Charge it would not say "Quick Charging" anymore.
I can get into the Recovery menu, but all options revert to the bootloop.
I can get to the Download menu. After about a few seconds of sitting on the Download menu, it starts the LG logo bootloop.
I have not tried to flash another stock ROM. I have downloaded the LGUp program, Uppercut, LG Mobile Support Tool, and LG Mobile Driver. I also downloaded the previous 1BA firmware kdz file.
I believe I have the knowledge to reflash properly, but I do not want to make the phone worse or lose my data. Plus, I don't want to void the warranty.
TL;DR I have bootloop and want to save my data!
Any suggestions would be very much appreciated! Thank you!

Flashing won't help you, this is a hardware problem. You can try freezing then phone, seeing if it will boot, and then backing up your files a fast as you can. Alternatively, if that doesn't work, you can take a hair dryer and heat the phone up.
Either way, LG will definitely take care of it under warranty since those morons can't seem to make a decent heat sink that lasts. Every LG flagship phone since the G4 has had this problem. I am sure the V30 and G7 will be no different -- they just haven't been out long enough yet.
-- Brian

runningnak3d said:
Flashing won't help you, this is a hardware problem. You can try freezing then phone, seeing if it will boot, and then backing up your files a fast as you can. Alternatively, if that doesn't work, you can take a hair dryer and heat the phone up.
Either way, LG will definitely take care of it under warranty since those morons can't seem to make a decent heat sink that lasts. Every LG flagship phone since the G4 has had this problem. I am sure the V30 and G7 will be no different -- they just haven't been out long enough yet.
-- Brian
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Click to collapse
I was hoping that this wasn't the issue. I was hoping that it was from the 1CA update, because the other random problems seemed to have started when it updated. Should I at least try to reflash? Would reflashing to a stock/OEM ROM (the one i mentioned above) void the warranty?
Also, when I restarted the phone today, that was the first restart that I have done since the update. Not sure if that means anything, but maybe??? lol

No, flashing a KDZ does not void the warranty even by LGs terms.
In the US rooting your phone doesn't void the warranty either .. no matter what OEMs will have you believe.
-- Brian

runningnak3d said:
No, flashing a KDZ does not void the warranty even by LGs terms.
In the US rooting your phone doesn't void the warranty either .. no matter what OEMs will have you believe.
-- Brian
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Click to collapse
Awesome! That's definitely good to know. Thanks.
I'm going to attempt to downgrade flash it. If it doesn't work, I'll contact LG. I dont really care about buying a new phone. My data on it is worth WAY more to me than the phone. (Guess I really should start backing up my stuff XD )
If you have any suggestions as to recovering my data, even if it kills the phone, I'm all ears!

Update: I attempted to flash or just access the phone as storage using many different ways. While I was browsing for new answers, I kept the phone connected to my computer and left it bootlooping. Eventually, the phone battery died and booted up properly. The battery was at 1%, but everything loaded just fine. I was able to recover all my data and save it to my PC.
Thinking that this was a soft-brick due to the phone actually fully booting, I was going to attempt to root and flash. I let the phone charge to 100%. When I reset the phone to implement the root, the phone got stuck in a BOOTLOOP AGAIN.
Any ideas in why this would happen? Does this mean it's a software based bug, or hardware?

Dart_Fur said:
Update: I attempted to flash or just access the phone as storage using many different ways. While I was browsing for new answers, I kept the phone connected to my computer and left it bootlooping. Eventually, the phone battery died and booted up properly. The battery was at 1%, but everything loaded just fine. I was able to recover all my data and save it to my PC.
Thinking that this was a soft-brick due to the phone actually fully booting, I was going to attempt to root and flash. I let the phone charge to 100%. When I reset the phone to implement the root, the phone got stuck in a BOOTLOOP AGAIN.
Any ideas in why this would happen? Does this mean it's a software based bug, or hardware?
Click to expand...
Click to collapse
I'm not sure to be honest, your situation seems strange

Was it hot and was your phone in the sun during your trip to work? Overheating can make weird things happen.

lakingslayer said:
Was it hot and was your phone in the sun during your trip to work? Overheating can make weird things happen.
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Click to collapse
It wasn't hot at all, I had the A/C in my car on and it sets on a car mount that mounts to the air vent. It gets direct A/C. I didn't have it charging either.
All I did was connect my phone to Bluetooth, play a mix, and drive 15mins to work at 6am in the morning. It was still dark and cool out. The music stopped and I tried to reset bluetooth. It took forever to turn off and wouldnt turn back on. I reset phone and BOOTLOOP. ???
There is no damage to the phone physically. I don't think I've ever dropped it ever. It's gotten hot a couple times, but that was months and months ago.
I've never had a problem with this phone since I got it almost 2 years ago, since the 1CA update, I had a couple bugs, now this bootloop.

Dart_Fur said:
Update: I attempted to flash or just access the phone as storage using many different ways. While I was browsing for new answers, I kept the phone connected to my computer and left it bootlooping. Eventually, the phone battery died and booted up properly. The battery was at 1%, but everything loaded just fine. I was able to recover all my data and save it to my PC.
Thinking that this was a soft-brick due to the phone actually fully booting, I was going to attempt to root and flash. I let the phone charge to 100%. When I reset the phone to implement the root, the phone got stuck in a BOOTLOOP AGAIN.
Any ideas in why this would happen? Does this mean it's a software based bug, or hardware?
Click to expand...
Click to collapse
I hope you got your data off before you started messing with it.. your phone is dead.. Runningnak3d gave you a clear warning
Flashing won't help you, this is a hardware problem. You can try freezing then phone, seeing if it will boot, and then backing up your files a fast as you can. Alternatively, if that doesn't work, you can take a hair dryer and heat the phone up.
Click to expand...
Click to collapse