Develop Bugs

Bootloop LG G2 Sprint

Hello everyone thanks for checking out my post for assistance.
I was running the OpTimuS 2.2 yesterday when my phone jumped into a boot-loop. The phone will be on for about 20-40 seconds then reboot. During that time I have no service and when I update the profile I get a message that I don't have any service. I can get into recovery and Download mode. I tried to just wipe and install the rom again. That process resulted in the same boot loop. I have a back up but that was done before the "spark" update and I didn't want to restore that because I know there will be an issue with the radio. I downloaded the stock rooted rom but the phone will not stay on long enough to transfer the file and when I try and load via recovery it will not allow me to transfer the file. (never shows up on computer I might be doing that wrong) I then attempted to bring the phone back to stock following this process http://www.rwilco12.com/forum/showthread.php?tid=96 but when I get down to step 13 the program will not respond anymore. I am going a friends house to try on a different computer but I wanted to get this out there just in case that has the same result.
Thanks again for any info that you could provide.

usvi525 said:
Hello everyone thanks for checking out my post for assistance.
I was running the OpTimuS 2.2 yesterday when my phone jumped into a boot-loop. The phone will be on for about 20-40 seconds then reboot. During that time I have no service and when I update the profile I get a message that I don't have any service. I can get into recovery and Download mode. I tried to just wipe and install the rom again. That process resulted in the same boot loop. I have a back up but that was done before the "spark" update and I didn't want to restore that because I know there will be an issue with the radio. I downloaded the stock rooted rom but the phone will not stay on long enough to transfer the file and when I try and load via recovery it will not allow me to transfer the file. (never shows up on computer I might be doing that wrong) I then attempted to bring the phone back to stock following this process http://www.rwilco12.com/forum/showthread.php?tid=96 but when I get down to step 13 the program will not respond anymore. I am going a friends house to try on a different computer but I wanted to get this out there just in case that has the same result.
Thanks again for any info that you could provide.
Click to expand...
Click to collapse
Flashing back to stock won't work, I had the same thing happened.......it's the EFS Partition (http://forum.xda-developers.com/showthread.php?t=2451390) If you made a EFS Partition Backup, then flashing that will be your best hope.....I didn't make a backup so I went to sprint cuz I have insurance and they are ordering me a new phone

Shadow_God said:
Flashing back to stock won't work, I had the same thing happened.......it's the EFS Partition (http://forum.xda-developers.com/showthread.php?t=2451390) If you made a EFS Partition Backup, then flashing that will be your best hope.....I didn't make a backup so I went to sprint cuz I have insurance and they are ordering me a new phone
Click to expand...
Click to collapse
They replaced it even though your phone was rooted?

Try installing an updated modem for your variant from this thread. It's worth a try.
http://forum.xda-developers.com/showthread.php?t=2451426
If you get it working, definitely make an EFS backup right away.

usvi525 said:
They replaced it even though your phone was rooted?
Click to expand...
Click to collapse
I used the LGFlashTool to bring it back to stock unrooted.......but my phone had no sevice and rebooted every couple minutes, plus the touchscreen wasn't working either.....I told them I took the Spark update and thats when it happened, he said they had alot of issue with touchscreen stopped working and rebooting issue with the spark update......so they didn't look at it long...lol
I have tried back to stock numbers of times....installing modems....restoring my backups....nothing would get it to work, so I gave up and went to sprint...lol

On the rom you were using, have you tried enabling airplane mode to prevent reboots? You could try to get a stock-based flashable zip on the device if possible.

alone-together said:
Try installing an updated modem for your variant from this thread. It's worth a try.
http://forum.xda-developers.com/showthread.php?t=2451426
If you get it working, definitely make an EFS backup right away.
Click to expand...
Click to collapse
Thanks for the option. I was able to install the radio but the issue remains.

usvi525 said:
Thanks for the option. I was able to install the radio but the issue remains.
Click to expand...
Click to collapse
Have we ruled out the possibility to flash a stock ROM in TWRP? If by any chance you have a USB OTG cable, you could try to connect a flash drive with another ROM.

This is my last ditch effort. Small back story: I somehow wiped EVERYTHING on my G2. EFS partition, ESN, data, SIM info., everything with dialer codes. All of my network information reads "unknown". I tried many methods from here on the forums to get this data back and it turns out I have lost my EFS partition- DNA for the network? I sent it to LG to get it fixed, having done a hard reset and leaving no trace of root. They sent it back without even asking and did no repairs. The note said "board bent". WTF?? How does the user bend the main board, especially when I never opened it? They voided my warranty and ripped off my IMEI/MEID sticker from the back of the phone.
Anyways, I am here with a brick. No network still. Here is what I have done:
1) .tot method to ZVC. Several more times... once to ZV7 where I lost touch capability. Luckily saved my arse with a micro->usb cable and a mouse.
2) attempted to root with ioroot25. Failed because the phone WILL NOT find recovery mode. adb, voldown+pwr then again from power off, and apps are unable to force the phone into recovery mode. I assume it is possible that my recovery mode is deleted?
3) Would have tried all of these "rewrite your efs/imei/etc" things but I can't do any without root. Can't root without recovery, can I?
4) Spent the last two weeks scouring the internet for a fix and going back to my Epic 4G temporarily.
Please help me, has anyone seen this before? Can anyone help me fix it? I am to the point where I would pay to have it fixed. Any experts out there? XDA has yet to let me down... I just need to know if I can fix it or if it is a brick so I can go searching for an old Sprint GS3.
Thanks all,
baublitz

What the What?!

Moderators, please forgive me in not in the right place...
Came home from a glorious week of camping and decided to check out some 4.4.4 ROM's on my phone...
Already running older version of C-ROM, so backed up and flashed the KK 4.4.4 version. That's where it the wheels came off my bus..
Phone booted so damn slow, then there were hundred's of FC's, rendering the phone unuseable. Rebooted, cleared Dalvik and Cache but same difference. The phone died, the battery would NOT charge! No matter what! Try as I may...NO GO!!! For hours! Feared it was that issue wherein the S3 motherboard dies and the phone has to be replaced by Samsung. Kept trying...finally get the phone to boot into TWRP. Whew!!! Still the phone kept complaining that the battery was dead. WTF?!
Restored the back up I had made...accidentally grabbed another backup from december of last year (Cyanogenmod), so had to recover my C-ROM back instead...RESTORE FAILS! Tried a few times but still failed. Tried to re-flash the latest C-ROM, but STILL fails...everything I'm trying fails.
I read the output and see an error, "Unable to wipe /system" ...found a thread where a user, using TWRP, had the same error with their ROM they were trying to flash. Eventually, the fix was to delete the make_4fs (or whatever it's called) from /sbin directory. Did so and was able to flash my Cyanogen, but could not restore my C-ROM backup. That STILL fails, however, no error in the live output while it's restoring. Just ends up Failing at the end of the restore process. The live logs indicate that it's using the 2fs (or whatever it's called), which was successful in flashing my Cyanogen ROM...why will it not restore my C-ROM back? :crying:
Any help would be greatly appreciated.

kojam said:
Moderators, please forgive me in not in the right place...
Came home from a glorious week of camping and decided to check out some 4.4.4 ROM's on my phone...
Already running older version of C-ROM, so backed up and flashed the KK 4.4.4 version. That's where it the wheels came off my bus..
Phone booted so damn slow, then there were hundred's of FC's, rendering the phone unuseable. Rebooted, cleared Dalvik and Cache but same difference. The phone died, the battery would NOT charge! No matter what! Try as I may...NO GO!!! For hours! Feared it was that issue wherein the S3 motherboard dies and the phone has to be replaced by Samsung. Kept trying...finally get the phone to boot into TWRP. Whew!!! Still the phone kept complaining that the battery was dead. WTF?!
Restored the back up I had made...accidentally grabbed another backup from december of last year (Cyanogenmod), so had to recover my C-ROM back instead...RESTORE FAILS! Tried a few times but still failed. Tried to re-flash the latest C-ROM, but STILL fails...everything I'm trying fails.
I read the output and see an error, "Unable to wipe /system" ...found a thread where a user, using TWRP, had the same error with their ROM they were trying to flash. Eventually, the fix was to delete the make_4fs (or whatever it's called) from /sbin directory. Did so and was able to flash my Cyanogen, but could not restore my C-ROM backup. That STILL fails, however, no error in the live output while it's restoring. Just ends up Failing at the end of the restore process. The live logs indicate that it's using the 2fs (or whatever it's called), which was successful in flashing my Cyanogen ROM...why will it not restore my C-ROM back? :crying:
Any help would be greatly appreciated.
Click to expand...
Click to collapse
Have you tried using ODIN to restore back to stock? If you can get the phone up and running, you may be able to restore from your old backups.

Bass_Man25 said:
Have you tried using ODIN to restore back to stock? If you can get the phone up and running, you may be able to restore from your old backups.
Click to expand...
Click to collapse
Thanks bud.
Oh, I got the phone up and running on the Cyanogen dated dec/2013.
ODIN? Never thought of it. Been such a long time. I do need to get stock on here so I can all the latest official radios etc, then put custom ROMs.
Been such a loooooong time since used ODIN though. Shouldn't be hard to get back on the horse.
Thanks for the suggestion!!!

any idea why this happened? anyone?
as an fyi, I tried to put the lastest SlimROM on but same difference. (i'm really pressed for time always. so I decided this is the quickest thing to try). seems the only thing that will flash is my Cyanogen from December. Strange...
Will have to give ODIN a try if I can ever get the time some day..

Odin shouldn't be a much longer process. Start flash, walk away. When you return 10 minutes to a few hours later, it'll be sitting there waiting for you, all nice and stock!
Anyway, one thing I dont recall seeing you tried is a factory reset. Chances are, that's what caused all your FC. Roms will always take a while on first boot. But all those FC were likely due to incompatible data. Then you may have encountered more data corruption as the system worked overtime trying to resolve all those conflicts.
Its purely a theory, but there's a good chance you will never be able to find exactly what caused all of your issues. Dont lose sleep over it is my best advice! A couple of tips though....
Never wipe/format system! Had you been able to successfully do so, and then nothing would still flash, there would no longer be an o/s to boot into! All roms will format your system partition as the first step in the flash, so there's just no need to do this manually. Most flash failures occur before the flash actually starts, meaning if there's a problem, most times you'll still be able to reboot normally.
Update your firmware. If its been a while since taking an ota or updating via Odin, you're probably on an older firmware build which is known to cause problems with many more recent roms. Most simply will not flash if not updated.
Also, by flashing your up to date firmware in Odin, you will likely fix any corruption which may have occurred on some of those partitions. Good chance you'll be able to flash whatever you want after an Odin firmware update and factory reset.
Hope that helps! Good luck!

DocHoliday77 said:
Odin shouldn't be a much longer process. Start flash, walk away. When you return 10 minutes to a few hours later, it'll be sitting there waiting for you, all nice and stock!
Anyway, one thing I dont recall seeing you tried is a factory reset. Chances are, that's what caused all your FC. Roms will always take a while on first boot. But all those FC were likely due to incompatible data. Then you may have encountered more data corruption as the system worked overtime trying to resolve all those conflicts.
Its purely a theory, but there's a good chance you will never be able to find exactly what caused all of your issues. Dont lose sleep over it is my best advice! A couple of tips though....
Never wipe/format system! Had you been able to successfully do so, and then nothing would still flash, there would no longer be an o/s to boot into! All roms will format your system partition as the first step in the flash, so there's just no need to do this manually. Most flash failures occur before the flash actually starts, meaning if there's a problem, most times you'll still be able to reboot normally.
Update your firmware. If its been a while since taking an ota or updating via Odin, you're probably on an older firmware build which is known to cause problems with many more recent roms. Most simply will not flash if not updated.
Also, by flashing your up to date firmware in Odin, you will likely fix any corruption which may have occurred on some of those partitions. Good chance you'll be able to flash whatever you want after an Odin firmware update and factory reset.
Hope that helps! Good luck!
Click to expand...
Click to collapse
What's up, Doc? Sorry for that...
I downloaded Odin this morning. I should have gotten the link from XDA. The site i got it from looked official, however, tons of endless pop-ups after I installed it. Freak!!!
Then found the xda links. Not sure which version to get because i didn't see which one handles the S3. The latest version (3.09) should, no?
As well, where do i get the stock ROM from? Forgive me for all these questions. Been extremely busy with work these past few months. No time to play around with my phone everything. I'm forgetting more than I know.
A full wipe was done. In TWRP, system was check (it's always checked) automatically when wiping to flash a new ROM.
Thanks again!

Everything you need is in my sig. Go to the firmware thread and the stock or root66 firmware listed there us what you flash in odin. Version 3.09 is fine btw.

DocHoliday77 said:
Everything you need is in my sig. Go to the firmware thread and the stock or root66 firmware listed there us what you flash in odin. Version 3.09 is fine btw.
Click to expand...
Click to collapse
Thanks!

S.O.S!!!
kojam said:
Thanks!
Click to expand...
Click to collapse
Downloaded the rooted firmware from your link and the ODIN (3.09)...
Flashed the firmware (making sure to get the correct one for WIND)...ODIN did it's thing...got a green pass...the phone rebooted...got the Samsung symbol, little swoosh animation, and the accompanying sound effect that goes with the swoosh-thing...THE PHONE NEVER BOOTED UP AN O/S!
Did it at about 11:30 last night, left it, got up this morn, and phone STILL in same status!
Found out that site where I downloaded the firmware had an issue last night. They posted this morn, apologizing to people about a D.O.D attack that may have caused dropped downloads. I downloaded the firmware again this morn, flashed with ODIN, got a pass....SAME THING!!! Phone
Had to quickly pack up my laptop to bring with me to the office. Will try the official, non-rooted firmware to see if I can get it to go.
Problems' that my team went from 12 to 2 people...my partner's off today...and I got a LOUD MOUTH across from me who WILL NOT leave me alone, no matter what I say or do. LOL.
Any suggestions?

In the words of George Costanza:
"I'm BACK, babyyyyyyy!!!!!"
The official firmware worked!
Phone's back online. Thanks for all your help. Will have to see about rooting later...as well, want to see how the battery operates on stock firmware. I've tried EVERYTHING under the sun to preserve batt life and NOTHING worked!!!
Tried EVERY KERNEL noted to be good on battery life, tried TONS of apps that were supposed to help, turned off as much as I could, etc....
batt still not good. I give up. Every diagnostic app says batt is very good. I dunno...

Earplugs! Lol! I definitely feel for you about your work status! Been there!
About the firmware though, if the download had been corrupted, it would've failed the initial check done by Odin. You are probably ok. Dont worry just yet!
If it is hanging up at the Samsung screen, you probably just need to factory reset. Almost always fixes this. (It happens due to incompatible data left from your previous rom)
This will wipe internal sdcard though, so if you haven't backed up yet, the next thing to fo is flash TWRP via Odin. You can then use its built in file manager to copy whst you need first. Or you can then flash an insecure kernel and use adb if you're familiar with that.

The Doc is in!
if the download had been corrupted, it would've failed the initial check done by Odin
Click to expand...
Click to collapse
That's EXACTLY my thought too. That was really perplexing...
I am up again...
Facotry Reset? How do I do that if stuck at the Samsung splash though?
Now that i know the official firmware works, maybe i'll, try again with the rooted firmware, try to factory reset when stuck, and continue to flash TWRP as you described above. Don't mind factory resetting. I've taken everything I need.
Oh!!!!
I noticed that all the apps I had before flashing the firmware are STILL on my phone. I would have thought that they would have been wiped out completely when lord ODIN was doing her thing.

....and battery life is STILL pretty bad...
Phone's been charging...became fully charged...unplugged it..it was down to 84% after only about 30/mins.
Will see how it goes after doing the factory wipe.
Again, how do i do a factory wipe if stuck at the Samsung swoosh after I re-flash the rooted firmware ?

Maybe your battery is dying. it happens. That would explain a big drop from the start.

To factory reset if you're stuck at boot up, turn the phone off, then boot up into recovery. Hold volume up, home and power. After it vibrates, release power only, continue holding the other two until you see recovery booting up.
If stock recovery is installed, choose factory reset.
In TWRP (probably similar in cwm) go to Wipe and choose factory reset there. In TWRP and CWM, factory resetting does not wipe your internal sdcard. Stock recovery will.
And as for Odin, it doesn't actually touch the user data partition, so all your apps and data are preserved. This is great when just upgrading from one build to the next, but is the reason a factory reset is required if coming from a non touchwiz rom.
---------- Post added at 03:59 PM ---------- Previous post was at 03:53 PM ----------
How old is your battery? The S3 is at the age where people who bought it when it was first released will start to notice the battery is beginning to degrade.
You can also get an app called Better Battery Stats here on xda (paid version in the play store). Its the goto utility for investigating problems with battery drain. Run it for a day after a full charge and then check its logs for persistent wakelocks. The app thread should explain its use better than I can, but if you are having trouble you can always post your bbs log here for one of us to look over. (This isnt my strongest area, but there are a few others around that may also be able to help. )

Help... I will PAY for help!

First person to help gets paid for your time...
Problem: I have a s3 i747 from att.
it has 4.3 stock.
I use srs to unlock all my phones.
well when I went to unlock this one it said it had new security.
Usually when this happens I odin this file that downgrades the modem.
well I did it and now I have null imei and unknown baseband
I tried restoring to stock, didn't help. Through kies and odin.
I need to put it back the way it was... can someone please help..... ill paypal you as soon as its working again...thanks

So you're currently at stock, unlocked? Does the phone boot at all?

These threads may help:
http://forum.xda-developers.com/showthread.php?t=2658486
http://forum.xda-developers.com/showthread.php?t=2722660

yes it is still stock 4.3. no its not unlocked. everything works and boots fine. just no signal because of null imei and unknown baseband.
I think I need to just flash a modem via odin....I just don't know which one

http://forum.xda-developers.com/showthread.php?t=1831898
There's seems to be a rash of this happening in the past month. You'll probably find that link helpful but first check and see if others found a better solution.

Yes. Flash the 4.3 modem.
As of 4.3, flashing any older modem will no longer work, resulting in an unknown imei and baseband version. Flashing back to the correct modem nearly always solves this issue.
It will be like this from now on btw. You cannot use any modem except the one which matches your current firmware build.
This means our free unlock method no longer works unfortunately. But you can get unlocked for just a few bucks using one of the many services online. I know some are on ebay, but google will find others as well.

I installed cwm and downloaded the modem but im lost from there.
do I rename it update.zip?

Nope, just flash like you would any other rom.
Because you asked about renaming it to update.zip though, I have to ask if you are certain you are in cwm? If you had previously updated via ota it may restore the stock recovery every time you reboot. If this is happening, reflash cwm in Odin, but uncheck auto reboot. Wait until it says PASS, then unplug and pull the battery.
Next put the battery back in and boot to recovery. (Volume up, home, power. Release power only after it vibrates)
If you are sure you are in cwm though, just flash the modem normally.

Yes im sure its cmw. when I open recovery and look for the zip its nowhere to be found. that's why I was asking if I should change the name.
I did try it by changing the name but the file still doesn't show up.

It's an IMEI problem. If you haven't made a backup of the IMEI folder you can't do anything.
Sent from my SM-G900H using XDA Free mobile app

daddydv said:
Yes im sure its cmw. when I open recovery and look for the zip its nowhere to be found. that's why I was asking if I should change the name.
I did try it by changing the name but the file still doesn't show up.
Click to expand...
Click to collapse
Make sure the sdcard is mounted. Have you tried getting to it on both internal and external cards?
Thin_Bezel said:
It's an IMEI problem. If you haven't made a backup of the IMEI folder you can't do anything.
Sent from my SM-G900H using XDA Free mobile app
Click to expand...
Click to collapse
Not true. 90% of unknown baseband and imei problems ive helped people with lately just needed the correct modem. And even if it were the imei, I can still help with that. Im convinced in this case its just the modem though.

Thanks doc... that was the problem...imei and baseband are back. donation has been sent....thanks again.

Hey thanks man! I do appreciate it, but I am just glad I could help! I will definitely put it to good use though! (Broke the lcd on my S3 a while back and haven't had the disposable funds to fix it. Something always comes up...lol!) Will be adding it to my savings for this purpose!
Anyway, since we were slightly on the IMEI topic, there is a backup you should do if you haven't already. (Root is required for this to work though.)
Its super simple and will create an on device backup of your nv data. The backup will be stored on a couple of partitions we never touch, not even with firmware flashes. This essentially makes it a permanent backup. The cool thing about it is every time you reboot, the system checks for any corruption, and if detected, it will automatically restore from this backup. So if it were to ever happen, you probably wouldn't ever even notice it!
Install the Terminal Emulator from the play store. Open and enter this:
su
reboot nvbackup
Thats it! Device will reboot and create your backup. This should prevent you from ever suffering from a lost IMEI!

DocHoliday77 said:
Hey thanks man! I do appreciate it, but I am just glad I could help! I will definitely put it to good use though! (Broke the lcd on my S3 a while back and haven't had the disposable funds to fix it. Something always comes up...lol!) Will be adding it to my savings for this purpose!
Anyway, since we were slightly on the IMEI topic, there is a backup you should do if you haven't already. (Root is required for this to work though.)
Its super simple and will create an on device backup of your nv data. The backup will be stored on a couple of partitions we never touch, not even with firmware flashes. This essentially makes it a permanent backup. The cool thing about it is every time you reboot, the system checks for any corruption, and if detected, it will automatically restore from this backup. So if it were to ever happen, you probably wouldn't ever even notice it!
Install the Terminal Emulator from the play store. Open and enter this:
su
reboot nvbackup
Thats it! Device will reboot and create your backup. This should prevent you from ever suffering from a lost IMEI!
Click to expand...
Click to collapse
You can also use qpst to backup imei. Windows app. Free. Lots of walkthroughs around for those less comfortable with cli.

Nvm. 10char

azuziel said:
You can also use qpst to backup imei. Windows app. Free. Lots of walkthroughs around for those less comfortable with cli.
Click to expand...
Click to collapse
I know, I already have it and have used it and other tools to help fix at least 700-800 S3's, probably more! (No, i do not charge for my help either.) I dont tell about it or give it out unless its absolutely needed for a legitimate imei restore though. Too many people try to use it illegally and Im not willing to take the chance. Its the main reason most of the info has been deleted from everywhere. Only a few threads here and there get by the mods it seems.
Anyway, to my knowledge, no one who has run this backup has ever lost their IMEI. It even seems to help for those occasions after flashing a cm rom where the imei displays "unknown". (Apparently, at least on the T999, cm sometimes has problems reading the nv data. If rebooting several times doesnt solve, stock firmware does).
At this point I believe if you run this backup, you will have no need for a .qcn or .txt file backup, which is why I just dont mention it anymore. And if it does happen, people can pm me and ill be happy to help fix it.
Because of how I understand this backup to function, I do believe if it had been run during first boot, we would've never seen so many imei problems to begin with! I just dont understand why Samsung refuses to do this!
Anyway, that's why I dont mention those tools anymore. If you have any questions about any of it, please feel free to PM me and ill try to explain better.

I screwed up xD

So, this is my first Samsung device, longtime HTC user. I was cocky and thought I could go ahead and delete system apps that I thought were safe to delete. Apparently, I was sorely mistaken.
I am now caught in a bootloop. Luckily for me, I can get into the system and do a few things before it reboots. I was unable to fing factory images for the s6 edge, so, I have another idea, but I need someone's help.
I was thinking if someone could make a backup using titanium backup of all their system apps and share it with me, I would attempt to run the restore option in TiBu to remedy the issue. If anyone could do this, or has a better idea, let me know. Thanks in advance, and I apologize for needing something so trivial (smh).

if you can get into the settings menu and do a factory reset, that would fix it..
also, try calling t mobile, and ask tech support how you can boot into recovery, and there should also be a factory reset choice in there..

wase4711 said:
if you can get into the settings menu and do a factory reset, that would fix it..
also, try calling t mobile, and ask tech support how you can boot into recovery, and there should also be a factory reset choice in there..
Click to expand...
Click to collapse
I've done that, the phone simply reboots itself. When I try to boot into recovery, I don't get that distorted green/white screen everyone else does, it flashes real quick then goes dark, nothing more. I've tried the vol- 4 times, power, vol- 7 times power, wait, power combo as well, it does not factory reset my device.

I would still call t mobile and ask them how to actually boot into recovery.
There has to be a way to do it; I would turn the phone off completely, then boot into recovery using the method t mobile suggests..
EDIT: read this http://www.androidexplained.com/galaxy-s6-recovery-mode/

wase4711 said:
I would still call t mobile and ask them how to actually boot into recovery.
There has to be a way to do it; I would turn the phone off completely, then boot into recovery using the method t mobile suggests..
EDIT: read this http://www.androidexplained.com/galaxy-s6-recovery-mode/
Click to expand...
Click to collapse
I really appreciate your help in trying to get me into recovery, but I have tried everything. I've done the release after the buttons stop blinking, don't release until you see blue text (which I never do, there is never blue text at the top of my screen). I also work for T-Mobile, I have access to the files customer care would read you if you called in. I am at work right now lol.
Honestly, all I need is a zipped titanium backup of system apps (just the app, no data) that I can get onto the phone and try and restore.
I don't mean to sound rude, but this isn't my first rodeo. I've been attempting to get a logcat to identify which error is causing the device to crash so I can ask for just that one app (I can't get the log though, always hangs on waiting for device, even though I can execute other adb commands). All I need is that TiBu copy.
Edit: Wow, I finally got it to factory reset. I'm not sure why it didn't work before. I tried the same thing countless times with no success, but I finally got it.
Again, I apologize if I sounded rude earlier. I really didn't mean to be.

not rude at all bro, as you know, there are so many different levels of "knowledge" here, that I try to use the lowest common denominator when helping folks out, but you obviously know what you are doing!
Glad to hear you got to factory reset menu; that should fix you right back up!:good:

I was in the same boat as you. Rooted, removed system apps, got back to Recovery Screen, but a Factory Restore did not bring back the apps that were removed. Tried Kies, but it would not work last night. As of this afternoon, Kies will now work. Just did it a few minutes ago.
Use the "Firmware Upgrade and Initialization" option. You'll need the Model Name and Serial Number, both of which can be found on the Box, or in the Settings menu if you can get there.

Note 4 bootloop... hardware failure?

Hi,
I plugged my note 4 into the OEM charger and all of a sudden it just goes into a bootloop continuously.
Occasionally it will reach the home screen and reboot again, but more often than not.. it reboot before the Sprint logo comes up.
Was fine before i plugged it in and was trouble free prior to that.
My phone is stock, not rooted.
The fact that it will reboot even at the Note 4 welcome sign is leading me to believe this could be a hardware issue...
Any ideas?
Anybody had the same situation and had luck troubleshooting or fixing this?
Any and all help i much appreciated...
Regards,
asmd.

Can you boot into recovery?
First thing I'd try is to pull battery, boot into stock recovery and wipe cache and try to boot.
If not booting, try wiping cache and dalvik.
You have the option to just take it in for evaluation but you should determine if you have reactivation lock enabled before doing anything else.
Still not booting? Factory reset. But if you have reactivation lock enabled that is not a good idea. It would be better if one of the two above booted the phone.
If reactivation lock is enabled, you need to install the same update the phone is on to prevent factory reset protection from activating. Don't factory reset yet; Odin or taking in for service may be your only option. If it boots, you should be able to open with same unlock method as before.
If you have reactivation lock disabled, you're free to try factory reset or update to latest through KIES. I've heard Samsung Switch may work too. You could also factory reset and update or emergency recover with one of those.
If still not booting, if it just updated, I'd mention that and not the charger you mentioned. It could be corrupt memory due to battery failing or bad update. The eMMC may be failing too.
Sent from my SM-N910P using Tapatalk

samep said:
Can you boot into recovery?
First thing I'd try is to pull battery, boot into stock recovery and wipe cache and try to boot.
If not booting, try wiping cache and dalvik.
You have the option to just take it in for evaluation but you should determine if you have reactivation lock enabled before doing anything else.
Still not booting? Factory reset. But if you have reactivation lock enabled that is not a good idea. It would be better if one of the two above booted the phone.
If reactivation lock is enabled, you need to install the same update the phone is on to prevent factory reset protection from activating. Don't factory reset yet; Odin or taking in for service may be your only option. If it boots, you should be able to open with same unlock method as before.
If you have reactivation lock disabled, you're free to try factory reset or update to latest through KIES. I've heard Samsung Switch may work too. You could also factory reset and update or emergency recover with one of those.
If still not booting, if it just updated, I'd mention that and not the charger you mentioned. It could be corrupt memory due to battery failing or bad update. The eMMC may be failing too.
Sent from my SM-N910P using Tapatalk
Click to expand...
Click to collapse
Thanks for the reply...
Ive been messing with it all morning... and if i leave it a lone and it cools, it will last a little longer than when it becomes warm, rebooting quicker and quicker.
i managed to get into recover and did a factory reset and cleared cache.
it has made no difference.
The longest time its gone before rebooting is the lock screen.... and the it reboots again.
as it warms, it eventually wont even get past the Note 4 welcome screen before rebooting.. and then finally freezing and will require a battery pull.
Makes no difference if its on charge or off.
i have a sinking feeling about this.....

Could be terminal but you haven't tried to flash firmware on partitions with Smart Switch, KIES or Odin yet. Right? You can check the phone status while in download mode to verify reactivation lock is disabled.
Try one of those on PC or take it to Sprint to have it flashed again.
If you purchased at Best Buy and they have a Samsung Experience kiosk, they can do that too. Dunno, maybe it doesn't matter if you purchased there or not but they've flashed my phone a couple of times.
I've tried to guide you down the path of least effort to restore your, if possible. There's still some hope of recovery.
Edit: Your battery could be suspect. Let it cool and plug in to make sure it's at least 60% or higher. If the battery is near a year old, I'd suggest fully charging but get a replacement if you frequently discharge it to 15% or lower. Especially if you use fast charging.
But you've most likely discharged it with all that reboot activity and heating up. Kudos to you if you're managing all that and keep a healthy battery. Otherwise, the battery may be contributing to or causing your issues.
Sent from my SM-N910P using Tapatalk

thank you for the help..
reactivation lock is off.
i can't get it to reliably not reboot anywhere in any screen.. only screen that will stay on for any period of time is recovery... but the phone stays cool.
Its not the battery, i have two, and both do the same thing.. the battery does not get warm, area that gets warm is neft to the battery below the sd card slot. (sd card removed).
Frequency of hang/reboot seems to be related to how warm that area gets.
The most i have managed to do is get into my phone past the lockscreen and it will shortly freeze and reboot as it warms up.. it will reboot at the note 4 welcome screen or sprint logo... and repeat... eventually to hang.
Both batteries are charged fully using the external charger. (samsung oem)
Shame, not a scratch on her....
Oh well, on to Ebay for parts/AS IS and time to move on...

Even if doubtful, I'd still take it back to Sprint or place of purchase.
The Note 4 has a bit of history with eMMC failure. It's even happened with updates and Samsung and Sprint is apparently aware of it. A while back I saw that listed as an ongoing carryover of known issues that needed resolution.
I don't have true stats on exchanges but several users here have repeatedly gotten deals on replacement phones, paying a small percentage when they failed- similar to yours.
OTA updates have also been suspect to cause eMMC failure. But honestly, l don't know what causes this: bad hardware or updates? Maybe it's just bad hardware not taking updates well? Nonetheless, I don't know if I've just been lucky or my hardware is stable. Still going strong here with no hint of failure.
Sent from my SM-N910P using Tapatalk

can i still take it back even though its out of warranty?
nearing 2 years now....

asmd6230 said:
can i still take it back even though its out of warranty?
nearing 2 years now....
Click to expand...
Click to collapse
No promises. Couldn't hurt. If you don't like the answer you get from first Sprint store, try another.
I would mention that bit of history with the updates.
Sent from my SM-N910P using Tapatalk

asmd6230 said:
Hi,
I plugged my note 4 into the OEM charger and all of a sudden it just goes into a bootloop continuously.
Occasionally it will reach the home screen and reboot again, but more often than not.. it reboot before the Sprint logo comes up.
Was fine before i plugged it in and was trouble free prior to that.
My phone is stock, not rooted.
The fact that it will reboot even at the Note 4 welcome sign is leading me to believe this could be a hardware issue...
Any ideas?
Anybody had the same situation and had luck troubleshooting or fixing this?
Any and all help i much appreciated...
Regards,
asmd.
Click to expand...
Click to collapse
I have the exact same issue going on with my wives phone. Just started yesterday out of no where rebooting over and over. Never really getting past the Samsung splash screen. She got an update like a week ago, but other than downloading a new app several hours earlier nothing sticks out to why its happening. I was able to once get into safemode, but the phone rebooted a minute into it and typically doesn't even get to the sprint splash screen when I've tried to do it since. It's totally stock and has not been unlocked or rooted. I thought it could be the battery since so many of these boot issues on the Note4 deal with that when googling, but my battery from my working Note4 in her phone does the same thing and her battery in my phone works just fine. I can get into the recovery options menu (volume up + home + power) and I can get into the download area (volume down + home + power) for loading bootloaders and such for long periods of time with no issues. I've cleared the cache with no luck. Haven't tried factory reset yet because I want to try to recover the photos and stuff first. Searching for the issue on google I came across this software (android-recovery.net/android-recovery-mode.html#two) where I was able to use the download area and connect the phone with this app which used its own bootup and it was able to show me all the files on the phone for recovery so we could retrieve them. It wanted $50 to complete the process though and, knowing the advances that everyone here has made on their phones I decided to decline that and search these forums for a way to just access the file directory of my the phone and retrieve my wives stuff prior to factory resetting it. I believe something is wrong with the bootloader of the phone and that is why it cannot get to the android OS to start up, but I could be wrong. Reading various articles made me to believe that if I just were to unlock the phone for rooting that possibly that could fix this issue with the bootloader or at least be able to recover her photos and stuff. I do have insurance on the phone and could get it fixed or replaced, but that would be a $200 deductible I believe and first thing they're going to try is factory resetting the phone which will lose her data we're trying to save.
It almost seems as if I were to get TWRP installed that I'd be able to access the files without the need of loading any ROMs. But I'm not sure if that will work in my case or erase data when I do it. The threads I'm reading aren't clear on that part. I would really be grateful if anyone could help me out with figuring out the easiest way to recover her stuff or get it working. Its been a long time since I've unlocked any phones and they were all iPhones back in the day when they were only on AT&T and I had T-mobile and wanted to it work.

@dsm_gsx97
I would suggest you try Odin and install the same update, if possible. That may be the most likely to retain your data if it's not corrupted.
Unfortunately, I don't think TWRP recovery works for Note 4 to copy data to PC. But if you go with that, know that it will trip Knox and void factory warranty. But if that's not an issue, you could copy data from internal memory to extSdCard to salvage it if it's not corrupt or private.
I know KIES has an emergency firmware recovery mode that may offer to reprogram it. But you may lose your data. Not sure but I think your phone has to booted into system to backup with KIES or Smart Switch?
This thread has the recent available stock tars, Odin and general instructions to get you started.
http://forum.xda-developers.com/showthread.php?p=63868221
Sent from my SM-N910P using Tapatalk

samep said:
@dsm_gsx97
I would suggest you try Odin and install the same update, if possible. That may be the most likely to retain your data if it's not corrupted.
Unfortunately, I don't think TWRP recovery works for Note 4 to copy data to PC. But if you go with that, know that it will trip Knox and void factory warranty. But if that's not an issue, you could copy data from internal memory to extSdCard to salvage it if it's not corrupt or private.
I know KIES has an emergency firmware recovery mode that may offer to reprogram it. But you may lose your data. Not sure but I think your phone has to booted into system to backup with KIES or Smart Switch?
This thread has the recent available stock tars, Odin and general instructions to get you started.
http://forum.xda-developers.com/showthread.php?p=63868221
Sent from my SM-N910P using Tapatalk
Click to expand...
Click to collapse
Thank you very much for the quick response. I would rather not void my factory warranty in case I have to use the insurance to replace it so it sounds like TWRP is out which is why I didn't use it yet because I was worried about that. I did try KIES and it said that firmware upgrade and initialization would erase all data. So I ruled out using that too. I did notice while in the recovery menu of her phone that it says she's on N910PVPU1ANIE ...so I put my phone in recovery menu and I'm on N910PVPU4DPH4. Googling her version it looks like hers is very old and mine is fairly new which makes sense because I did the update a few days ago also. I wonder if hers is so old because that's what the other software program put it on to be able to bootload it to recover the files.
Anyways looking at your link I think I'll try oden with one of the more recent TARs after getting her stuff off with that program. Yes I'll just pay the $50 for peace of mind. I really appreciate your advice. Its not easy gathering all the answers without really being involved on this forum so thank you for that thread. None of the TARs listed is the update I have, but that shouldn't matter should it? As long as its a newer one than what it says she has?

dsm_gsx97 said:
Thank you very much for the quick response. I would rather not void my factory warranty in case I have to use the insurance to replace it so it sounds like TWRP is out which is why I didn't use it yet because I was worried about that. I did try KIES and it said that firmware upgrade and initialization would erase all data. So I ruled out using that too. I did notice while in the recovery menu of her phone that it says she's on N910PVPU1ANIE ...so I put my phone in recovery menu and I'm on N910PVPU4DPH4. Googling her version it looks like hers is very old and mine is fairly new which makes sense because I did the update a few days ago also. I wonder if hers is so old because that's what the other software program put it on to be able to bootload it to recover the files.
Anyways looking at your link I think I'll try oden with one of the more recent TARs after getting her stuff off with that program. Yes I'll just pay the $50 for peace of mind. I really appreciate your advice. Its not easy gathering all the answers without really being involved on this forum so thank you for that thread. None of the TARs listed is the update I have, but that shouldn't matter should it? As long as its a newer one than what it says she has?
Click to expand...
Click to collapse
Was it only the OTA update that updated that phone?
NIE is the original-initial release of the Note 4. If OTA tried to update it, it must have failed?
Nonetheless, you should know the history of that phone. I wouldn't install one of those recent updates until you've backed up your data. You may lose your data jumping to a much newer update.
The phone doesn't boot at all? If it does boot, you could run Phone Info for Samsung from Google Play to see what the partitions are actually at. That would help to recover that data if possible to do so. But also KIES could backup data if it boots.
The NIE stock tar is in post #2 of this thread.
http://forum.xda-developers.com/showpost.php?p=56853325&postcount=1
If it boots after Odin, your data may be OK. If not, may be corrupted data or partition.
Sent from my SM-N910P using Tapatalk

samep said:
Was it only the OTA update that updated that phone?
NIE is the original-initial release of the Note 4. If OTA tried to update it, it must have failed?
Nonetheless, you should know the history of that phone. I wouldn't install one of those recent updates until you've backed up your data. You may lose your data jumping to a much newer update.
The phone doesn't boot at all? If it does boot, you could run Phone Info for Samsung from Google Play to see what the partitions are actually at. That would help to recover that data if possible to do so. But also KIES could backup data if it boots.
The NIE stock tar is in post #2 of this thread.
http://forum.xda-developers.com/showpost.php?p=56853325&postcount=1
If it boots after Odin, your data may be OK. If not, may be corrupted data or partition.
Sent from my SM-N910P using Tapatalk
Click to expand...
Click to collapse
She's done plenty of updates over the last few years since we got the phoens. In fact she did that last update a few days before I did. That's why I was confused when I noticed what it said at the top of the bootloader screen for her update version. The phone does not boot at all. Only to the the Samsung splash screen and never gets to the sprint splash screen. It initially would get further, but now doesn't at all. I went ahead and paid for that software and have now backed up all her stuff. Was hoping to fix it without factory resetting the phone. At this point at least I have a backup, but ideally it would save her from losing all her texts and other crap.

dsm_gsx97 said:
She's done plenty of updates over the last few years since we got the phoens. In fact she did that last update a few days before I did. That's why I was confused when I noticed what it said at the top of the bootloader screen for her update version. The phone does not boot at all. Only to the the Samsung splash screen and never gets to the sprint splash screen. It initially would get further, but now doesn't at all. I went ahead and paid for that software and have now backed up all her stuff. Was hoping to fix it without factory resetting the phone. At this point at least I have a backup, but ideally it would save her from losing all her texts and other crap.
Click to expand...
Click to collapse
In that case, try the most recent stock tar in the first thread you were about to try.
Something seems off but trying to flash the original stock tar would be problematic if it was updated beyond Android 5.0
If it doesn't boot, you'll most likely have to factory reset it.
Sent from my SM-N910P using Tapatalk

Note 4 bootloop
just heat main ic little bit with past and check there is no heatup board on boot.and set is ok.tested