Database Users

[Q] Won't boot after official update

Hi all,
My firmware has been the same since the day I bought it, which also was the day of release here in the UK, so it was 2.3.3. Today it said that a firmware upgrade was available, so I selected to download and install it. After a while it rebooted, showed it installing, then booted up normally. I got the main screen again and it said there were more software updates available, so I said to install those too. Again it rebooted, showed installation progress, then when booting up, it now gets permanently stuck on the boot screen where it just shows the Samsung Gaiaxy S II logo (along with the GT-I9100 text). I've left it for over 30 mins and nothing changes. I've tried rebooting several times, both with charging cable in and out, removed the battery for a few minutes and tried again, but it won't get beyond this screen anymore.
I looked at the thread about what to do about this situation (boot loop) which involved erasing user data, so I did this. The message that also came up during erasure said that it wiped the cache too. Tried rebooting after that but it's still stuck.
Is there a way to fix this?
Note that I've never installed custom firmware and never rooted my phone. I also don't have a 32-bit version of Windows, so can't use Odin (it never picks the device up). Plus I don't wish to void the warranty. Is it possible to get the official update zip package which I can flash from the recovery menu?
Thanks
Thom

Is there not a warranty provided by your cell carrier? I know in the us most carriers provide a 1 year warranty with all devices. They would exchange it gladly especially since you did everything by the rules.
Sent from my i897 running MIUI 1.8.19 with TalonMTD kernel.

xijar said:
Is there not a warranty provided by your cell carrier? I know in the us most carriers provide a 1 year warranty with all devices. They would exchange it gladly especially since you did everything by the rules.
Click to expand...
Click to collapse
Yes, it's under standard warranty. I bought it sim-free without being tied to a network. I have already contacted Samsung and they said they'll email me details of the service centre to return it to, but I was hoping for a solution before needing to do that.

Nothing you can do without odin picking the phone up.
I use 64bit windows and it picks up fine, make sure you have the drivers installed (see the link in my sig, for my 4shared, where you can get them) or if you have kies installed you have them but make sure to kill all kies processes first in task manager.
But in the end, best bet is just to send it in, to make sure you dont void your warranty

Sorry this is a mistake.

darkixion said:
Hi all,
My firmware has been the same since the day I bought it, which also was the day of release here in the UK, so it was 2.3.3. Today it said that a firmware upgrade was available, so I selected to download and install it. After a while it rebooted, showed it installing, then booted up normally. I got the main screen again and it said there were more software updates available, so I said to install those too. Again it rebooted, showed installation progress, then when booting up, it now gets permanently stuck on the boot screen where it just shows the Samsung Gaiaxy S II logo (along with the GT-I9100 text). I've left it for over 30 mins and nothing changes. I've tried rebooting several times, both with charging cable in and out, removed the battery for a few minutes and tried again, but it won't get beyond this screen anymore.
I looked at the thread about what to do about this situation (boot loop) which involved erasing user data, so I did this. The message that also came up during erasure said that it wiped the cache too. Tried rebooting after that but it's still stuck.
Is there a way to fix this?
Note that I've never installed custom firmware and never rooted my phone. I also don't have a 32-bit version of Windows, so can't use Odin (it never picks the device up). Plus I don't wish to void the warranty. Is it possible to get the official update zip package which I can flash from the recovery menu?
Thanks
Thom
Click to expand...
Click to collapse
How did you erase user data?
Sent from my GT-I9100 using XDA Premium App

inkyadrian said:
How did you erase user data?
Click to expand...
Click to collapse
When it was switched off, I held down Vol-Up, Home and the power button. There was an option in the menu called "wipe data/factory reset". There's also a "wipe cache partition" option, the action of which is performed in the wipe data option anyway.

Note 4 Stuck in Boot Loop - Help - Recovery not working - Flash stock Rom not working

Note 4 Stuck in Boot Loop - Help
I have a Note 4 SM-N910F, never been rooted, stock rom upgraded to 5.1.1 back in October, working fine until yesterday when it got stuck in a Boot loop.
Not sure what caused it but before it got stuck I was messing around with Google Photos which was running a bit slow.
Also I put it on the Qi Charger just before the loop started. It has an aftermarket Fone charger stuck to the battery. I’ve had this and the Qi Charger for 6mths with no problems before now.
It gets to the Samsung page waits a couple of seconds then boots again.
Here’s what I’ve tried - unsuccessfully - to fix the boot loop:
1: recovery mode.
I can get the little recovery text to appear in the top left but after a few seconds it boots again.
2: volume down, home
This gets me to the screen with up/down for continue/cancel.
This is the _only_ screen I can get to stay up without rebooting. It sits there waiting for input.
- Cancel, causes restart, of course, but back into the bootloop
3: Mashing on power button. Banging it, wiggling it, blowing on it.
I read somewhere this could cause a boot loop, but I doubt it is my case because
a. I’ve never had problems with the power button before
b: When I take out the battery and put it back in, it does NOT turn on. If I do the same holding the power button, it powers into the boot loop. So if the button were jammed on I would expect it to never remain off with the battery in.
3: flashing stock rom
I’m not 100% sure what build I had before. I know it was stock 5.1.1 OTA, and I’m pretty sure it was unlocked (my wife bought the phone and i inserted my old sim, but she may have bought it from my carrier and can’t remember)
So anyway I tried all three versions of TPH (unlocked) 5.1.1 from Sammobile.
Installed Odin 3.10.7 and flashed them.
It reboots to recovery but immediately boot loops again.
I doubt its to do with the version of the rom anyway since the symptoms are identical after flashing. Only now the boot loop always shows the little ‘recovery booting...’ text in the top left.
Here’s what I have NOT tried but am thinking about:
A: Re-partition option in Odin
B: Nand Erase All option in Odin
C: Buying a new battery.
On A/B: as far as I can tell what I have done so far should have left the data intact. I’m prepared to wipe all my data if it fixes my phone (no lectures about backups please!) and I’m tempted to do one of these on the off chance that the problem is caused by data or the “disk" problems.
But I don’t want to brick it. Can someone recommend how likely these are to help
And what they actually do?
(Please refrain from responses I see elsewhere like “this will brick your phone if you don’t know what you’re doing”. I don’t know what I’m doing, thats why I’m asking - just the facts please)
On C: the battery seems ok in that the power is solid even after not being plugged in for a long time, but since it was on the Qi Charger with that aftermarket thing stuck to it when it happened, I’m suspicious. Can any one say if this is a likely cause?
If so, it might be worth waiting till I get a new batter before doing A or B (can I wait days for Amazon!?)
[UPDATE] Got a new (genuine) battery at a local electronics store. No dice. Same problem, so it's not the battery. Shall I go ahead and re-partition.
[UPDATE] Got a PIT file from another forum, and flashed again with re-partition checked and PIT loaded. same results.
Is Nand-rease worth trying?
The phone is still under warranty so maybe I can return it.
But in that case I want to erase what's on it first.
thanks for any help
rhubarb

I don't think that the Samsung service center will accept cuz u have unofficiall custom
Simple Go to ur any nearby SOFTWARE ENGINEER may be he will help u out
Even I had the same problem with my NOTE 4 EDGE

Try downloading and flashing any "COJ5" build of 5.1.1 from sammobile. Samsung has recently issued a new update "COJ5" it basically locks down the bootloader and will not allow the device to run any previous builds.....Maybe your phone updated to COJ5 in the background and then it started messing around because the phone is rooted. Flashing "COJ5" will lock your bootloader and you will not be able to flash 4.4.4 or 5.0.2 but there is nothing to lose when your phone is already pretty much dead?.....ORRR if this is not a software issue then it could be related to hardware maybe the memory of your phone is done. I am not an expert on this but this is just an advice.....i have told you what will happen if u flash coj5 build now its up to you to decide. I would suggest you wait and wait if you are lucky to get a response from an expert and do what they say .......if not then give this a try!
**EDIT** another idea....First flash a custom recovery such as TWRP....see if it lets you boot into recovery and if it does then perform all sorts of formats.....and factory resets in there see if it works....if its still rebooting after format then flash the coj5 build of 5.1.1....note that you "MUST" format it with TWRP first and then check if its working because once you have coj5...it might not let you flash custom recoveries.

dork997 said:
Try downloading and flashing any "COJ5" build of 5.1.1 from sammobile. Samsung has recently issued a new update "COJ5" it basically locks down the bootloader and will not allow the device to run any previous builds.....Maybe your phone updated to COJ5 in the background and then it started messing around because the phone is rooted. Flashing "COJ5" will lock your bootloader and you will not be able to flash 4.4.4 or 5.0.2 but there is nothing to lose when your phone is already pretty much dead?.....ORRR if this is not a software issue then it could be related to hardware maybe the memory of your phone is done. I am not an expert on this but this is just an advice.....i have told you what will happen if u flash coj5 build now its up to you to decide. I would suggest you wait and wait if you are lucky to get a response from an expert and do what they say .......if not then give this a try!
**EDIT** another idea....First flash a custom recovery such as TWRP....see if it lets you boot into recovery and if it does then perform all sorts of formats.....and factory resets in there see if it works....if its still rebooting after format then flash the coj5 build of 5.1.1....note that you "MUST" format it with TWRP first and then check if its working because once you have coj5...it might not let you flash custom recoveries.
Click to expand...
Click to collapse
You can flash TWRP through ODIN while on COJ5 bootloader. It's locked but you still can flash recoveries and kernel and 5.1.1 ROMS

I am very interested in this thread. I have the EXACT same problem as you have after installing SimplRom, which was a ROM prior to COJ5. It could indeed be that our bootloaders are locked now?
I am using the N910F and just like you, installing any ROM/Custom Recovery/Bootloader/Kernel doesn't help. Perhaps installing a COJ5 ROM might help. I will give that a try, but I've recently used Kies to install the latest official firmware, but it didn't fix the issue.
I will report back here and we'll work on this together to make our phones work again!

Osama lakdawala said:
I don't think that the Samsung service center will accept cuz u have unofficiall custom
Simple Go to ur any nearby SOFTWARE ENGINEER may be he will help u out
Even I had the same problem with my NOTE 4 EDGE
Click to expand...
Click to collapse
Thanks but:
1: I have no custom rom. I have never had a custom rom on this device. I want to take it to Samsung, but want to clear the memory first. How can I do that?
2: I _am_ a software engineer_

dork997 said:
Try downloading and flashing any "COJ5" build of 5.1.1 from sammobile. Samsung has recently issued a new update "COJ5" it basically locks down the bootloader and will not allow the device to run any previous builds.....Maybe your phone updated to COJ5 in the background and then it started messing around because the phone is rooted. Flashing "COJ5" will lock your bootloader and you will not be able to flash 4.4.4 or 5.0.2 but there is nothing to lose when your phone is already pretty much dead?.....ORRR if this is not a software issue then it could be related to hardware maybe the memory of your phone is done. I am not an expert on this but this is just an advice.....i have told you what will happen if u flash coj5 build now its up to you to decide. I would suggest you wait and wait if you are lucky to get a response from an expert and do what they say .......if not then give this a try!
**EDIT** another idea....First flash a custom recovery such as TWRP....see if it lets you boot into recovery and if it does then perform all sorts of formats.....and factory resets in there see if it works....if its still rebooting after format then flash the coj5 build of 5.1.1....note that you "MUST" format it with TWRP first and then check if its working because once you have coj5...it might not let you flash custom recoveries.
Click to expand...
Click to collapse
Thanks to you and dork97 for the ideas. First some notes:
- I have never flashed a custom ROM, nor ROOTed this Note 4. The recent upgrade to 5.1.1 was official.
the first upgrade to 5.0.1 was automatic and after that I turned off automatic upgrades and upgraded to 5.1.1. manually. So I dont think it was an upgrade that caused it and it certainly was NOT a custom ROM or ROOT. I was doing nothing at all when the boot loop started.
- I'm not sure what ROM I had, but when I went looking for the available Portugal unlocked ROM, which _should_ be what I had, the latest were CJ03 (3, not 5) and before that CH03, CI03. Presumably I had one of those (my last update was October, so probably CH03).
I have tried all 3 of these, but the symptoms are the same.
I'm tempted to try the TWRP option - but would like some more details on what is and what it does, or what problem I might have that it would fix.
However I am probably still in time for a warranty repair - especially since I didnt actually do anything for this to happen. I would like to avoid losing that chance.
If I do take it in for warranty, I'd like to wipe the memory first though. How can I do that?
Finally can anyone actually tell me if the NAND ERASE is likely to help? How does flashing TWRP compare?
I get the feeling in fact, that I have a hardware problem. Especially given there were not software system changes around the time it happened, and given that it loops while trying to boot into recovery mode. In fact the only mode that doesnt constantly cycle is download mode. (Even holding the power button in dl mode does nothing which makes me suspect that, but pulling the battery out and replacing it leaves it off until I press the power button so perhaps not)
Thanks for the replies so far. Any more ideas, details?

roverrhubarb said:
I get the feeling in fact, that I have a hardware problem. Especially given there were not software system changes around the time it happened, and given that it loops while trying to boot into recovery mode. In fact the only mode that doesnt constantly cycle is download mode. (Even holding the power button in dl mode does nothing which makes me suspect that, but pulling the battery out and replacing it leaves it off until I press the power button so perhaps not)
Click to expand...
Click to collapse
I have the exact same as you. I did install a custom recovery (multiple) and still get the bootloop. From my tries yesterday, I indeed also suspect it may be a hardware issue. Perhaps to do with the battery/charging port. When I have my device unplugged and try to start in recovery/normalboot, it does not have a bootloop but simply turns off (and then doesn't respond until I pull the battery out). I think a NAND erase wouldn't do anything as I've personally tried that already.
Have you prior (upto a week) before you got the issues had your phone in a moist environment (bathroom while showering for example). I got my problems a week after I accidentally left my phone in the bathroom and installed custom ROM (which was done earlier and had no issues).
I've read online that it may have caused oxidation on the inside and may need some cleaning/drying with alcohol.
I still hold hope that we just have a software issue as download mode is working fine (apart from the Power off not working unless we pull out the battery).
Anybody have any experience with oxidation on their phone? Perhaps have had a similar bootloop due to hardware failure?

roverrhubarb said:
Thanks to you and dork97 for the ideas. First some notes:
- I have never flashed a custom ROM, nor ROOTed this Note 4. The recent upgrade to 5.1.1 was official.
the first upgrade to 5.0.1 was automatic and after that I turned off automatic upgrades and upgraded to 5.1.1. manually. So I dont think it was an upgrade that caused it and it certainly was NOT a custom ROM or ROOT. I was doing nothing at all when the boot loop started.
- I'm not sure what ROM I had, but when I went looking for the available Portugal unlocked ROM, which _should_ be what I had, the latest were CJ03 (3, not 5) and before that CH03, CI03. Presumably I had one of those (my last update was October, so probably CH03).
I have tried all 3 of these, but the symptoms are the same.
I'm tempted to try the TWRP option - but would like some more details on what is and what it does, or what problem I might have that it would fix.
However I am probably still in time for a warranty repair - especially since I didnt actually do anything for this to happen. I would like to avoid losing that chance.
If I do take it in for warranty, I'd like to wipe the memory first though. How can I do that?
Finally can anyone actually tell me if the NAND ERASE is likely to help? How does flashing TWRP compare?
I get the feeling in fact, that I have a hardware problem. Especially given there were not software system changes around the time it happened, and given that it loops while trying to boot into recovery mode. In fact the only mode that doesnt constantly cycle is download mode. (Even holding the power button in dl mode does nothing which makes me suspect that, but pulling the battery out and replacing it leaves it off until I press the power button so perhaps not)
Thanks for the replies so far. Any more ideas, details?
Click to expand...
Click to collapse
Well if you still have warranty then don't try anything on your own and go for the warranty repairs.

dork997 said:
Well if you still have warranty then don't try anything on your own and go for the warranty repairs.
Click to expand...
Click to collapse
thanks. How can I wipe personal data without voiding the warranty, using odin or kies? Given I canNOT get it into recovery mode, only download mode.

roverrhubarb said:
thanks. How can I wipe personal data without voiding the warranty, using odin or kies? Given I canNOT get it into recovery mode, only download mode.
Click to expand...
Click to collapse
Since you can get into download mode I'd flash firmware through ODIN again after verifying it's correct.
I'm seeing off the sammobile site for the 910F not all are the COJ5 locked bootloader.
Since you did update in Oct you may be on the COJ3. I'd try one of those and see if it works.
If it doesn't work and stops on the sboot.bin file then you have the COJ5

roverrhubarb said:
thanks. How can I wipe personal data without voiding the warranty, using odin or kies? Given I canNOT get it into recovery mode, only download mode.
Click to expand...
Click to collapse
i am sorry i don't know any way to remove personal data other than doing it via recovery. There is an option of "nand erase" in odin it is used while flashing firmware and it wipes everything on the phone but i have never used it (and also don't know whether it can help you or not) ... Senior members kindly help us with this.

Any update to your situation?
very interested as I am in the same situation as you are. Download mode works, recovery+normal boot not. No matter what ROMs/recoveries I install

Same issue I think
I am also in the same situation, although I can enter the recovery mode - home power and volume up - I have tried the wipe cache and then factory wipe to no avail - I have also entered download mode and flashed the stock recovery and even though Odin says pass, it is still in a boot loop. Also when I go to the download screen it has a line saying knox warranty void 0x1(4) does this mean I have voided the warranty even though I only used Odin to flash stock recovery?

Did anyone found a solution
Did anyone ever found a solution to this problem I'm having the exact same issue on a note 4 smn910a

I have a slightly different issue with my Note 4 SM-N910G, wherein am not able to start the phone at all, it is completely dead, if i put the cell phone on charge then also there is no LED on the top but if i connect the device to the PC it does make the connected sound on the PC but Odin is still not able to recognize the device neither kies. I tried draining the power by removing the battery, connected the device to PC without battery and then inserting it but the same problem. Please suggest me any resolution for this dead body am carrying from past few weeks.

hi Op,
did you find any solution for this issue?

Hello all. This is advice to use as a very last resort if you are experiencing the recovery bootloop issue AND you don't have the emmc failure bug. I had the recovery reboot, sudden shutdown with no warning, etc. issue for the past two weeks. I tried everything on Google and Youtube to fix my problem with no success. I flashed multiple stock ROMS and recovery tars (stock and TWRP) via ODIN, but nothing worked. Oddly enough, I never received the emmc error that I have read about. Also, in the few times that my phone booted normally, I even loaded the Wakelock Power Manager app, set it to partial wakelock and my phone STILL continued to bootloop. As a last resort, I bought a new battery, but the reboot problems continued in Android 4.4.4 Kitkat, 6.0 Marshmallow, 7.1 Nougat and 8.1 Oreo ROMS. Well, here is what finally helped me to get my phone back operational. I had a backup ROM from a previous install and a TWRP flashable version of the same ROM on my SD card (in case the phone did not stay on for the full restore). I put the phone into a ziplock bag into a freezer for about 20 min. (thankfully this time TWRP stayed on long enough for me to do the following):
1) copy all the files I wanted to save from internal storage to a computer.
2) performed a full wipe (Dalvic, Cache, System, etc. Like when flashing a ROM, but this time also internal storage. Note: Please do not wipe both internal and SD card, as you may have a difficult time trying to load the ROM file back on the sd card (assuming you don't have a card reader).
3) After wiping, I was able to restore my stock ROM backup (or you can just flash the stock ROM).
I can't be 100% sure, but I think my wiping internal and then flashing the stock ROM finally did the trick. Since this morning, the phone has been pretty much back to as it was before. In either case, I'm sharing this with the hope that it helps someone else.
Sent from my SM-N910T using Tapatalk

SM-G935F issues after update to 7.0

Hey guys I'm newly registered to the forum but have always scrolled through various posts to get answers until this bizarre issue.
I have an SM-G935F and as per the title it randomly shuts off and becomes completely unresponsive. If I connect it to a charger it doesn't recognize it and I've tried the pressing the volume down and power button to simulate battery pull, which doesn't work and I can't get into recovery mode or download mode. If I leave the phone overnight and plug it in to charge the next day, it recognizes the charger, I charge it up to 100% and it's fine again and I can get roughly 20 minutes use out of it before the cycle repeats.
The OTA update kept failing so I updated my phone via Odin with the firmware from sammobile (just the BL and AP files), as I've done several times in the past when OTAs have randomly failed. After flashing with odin, I always enter download mode to check it's all official and it now says warranty void: 1 (0x0500) which I know is KNOX being tripped, but I've never rooted my phone. The binary and system status are both official but I'm baffled as to why KNOX has been tripped.
If anyone has any ideas as to what to do to make my phone stop crashing and turning off, (I know you can't reset the KNOX counter so I'm out of luck there, as frustrating as it is) I'd fully appreciate your help. Using a Samsung J3 after my S7 edge is a painful experience
Thanks in advance guys.
Sent from my SM-J320FN using Tapatalk

That's very unusual to trip knox via Odin, was second hand phone?
Maybe try flashing 6.0.1 firmware and hold off updating until 7.0 is sorted.

It was an upgrade on my contract in October so it was brand new.
I'll try to flash 6.0.1 again and see if I have any more luck with it.
I'm tempted to go back to the store and ask for a replacement but I know they'll question the warranty void counter. I'm just so confused as to why it's tripped it.
Sent from my SM-J320FN using Tapatalk

Perhaps is a bad flash reverting back to MM should fix issue but certainly not knox counter.
I'm also awaiting long overdue nougat update and was going to flash via Odin until I read your post. Slightly nerves now wonder if anyone else has had the same issue of tripping knox.

I've just updated via odin and no knox trip, void counter remains the same.

I reverted back to 6.0.1 and the issue still happened which is making me wonder whether or not it's a hardware issue.
I'm going to download a ROM (probably superman rom) and try flashing that through TWRP and see if that fixes it. I won't be able to do it until I'm home tonight but I will get back and update you on how I get on.
I'm glad you successfully flashed 7.0 without any issues, hopefully I'm the only one who has this problem.
Sent from my SM-J320FN using Tapatalk

LukeC981 said:
I reverted back to 6.0.1 and the issue still happened which is making me wonder whether or not it's a hardware issue.
I'm going to download a ROM (probably superman rom) and try flashing that through TWRP and see if that fixes it. I won't be able to do it until I'm home tonight but I will get back and update you on how I get on.
I'm glad you successfully flashed 7.0 without any issues, hopefully I'm the only one who has this problem.
Sent from my SM-J320FN using Tapatalk
Click to expand...
Click to collapse
If the problem occurs on the official ROM, flashing custom one won't help at all. I would recommend you flashing again nougat after wiping all data, system, cache via recovery mode
Sent from my SM-G935F using Tapatalk

dollar7 said:
If the problem occurs on the official ROM, flashing custom one won't help at all. I would recommend you flashing again nougat after wiping all data, system, cache via recovery mode
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
I'll give this a go tonight and see how I get on.
I find it very odd that both 7.0 and 6.0.1 gave the same restarting issues which is why I'm worried it's a hardware issue and not software.
I do have the TWRP file so could flash that, do a dalvik and normal cache wipe too after installing nougat again.
Sent from my SM-J320FN using Tapatalk

So I installed 7.0 again and it is still crashing and becoming a completely unresponsive phone with a black screen. Again, left it over night and plugged in this morning to charge and it's on again. I have absolutely no idea what to do to fix this issue.
Sent from my SM-J320FN using Tapatalk

LukeC981 said:
Hey guys I'm newly registered to the forum but have always scrolled through various posts to get answers until this bizarre issue.
I have an SM-G935F and as per the title it randomly shuts off and becomes completely unresponsive. If I connect it to a charger it doesn't recognize it and I've tried the pressing the volume down and power button to simulate battery pull, which doesn't work and I can't get into recovery mode or download mode. If I leave the phone overnight and plug it in to charge the next day, it recognizes the charger, I charge it up to 100% and it's fine again and I can get roughly 20 minutes use out of it before the cycle repeats.
The OTA update kept failing so I updated my phone via Odin with the firmware from sammobile (just the BL and AP files), as I've done several times in the past when OTAs have randomly failed. After flashing with odin, I always enter download mode to check it's all official and it now says warranty void: 1 (0x0500) which I know is KNOX being tripped, but I've never rooted my phone. The binary and system status are both official but I'm baffled as to why KNOX has been tripped.
If anyone has any ideas as to what to do to make my phone stop crashing and turning off, (I know you can't reset the KNOX counter so I'm out of luck there, as frustrating as it is) I'd fully appreciate your help. Using a Samsung J3 after my S7 edge is a painful experience
Thanks in advance guys.
Sent from my SM-J320FN using Tapatalk
Click to expand...
Click to collapse
Hey buddy it might be because of wrong varient rom flashed so knox may be tripped
Try downlaoding and flashing the original variant and original country rom from samfirmware.com and it might actually do the trick
As for your battery problems, it might be a charger or port problem based on maybe if the cord might be streched more than required accidently or maybe the charger has encountered a fault or power surge so its circuit might have failed to safeguard your phone from over surge of current and over heating.....try using original but substitute charger of someone else

SHREYSTARK said:
Hey buddy it might be because of wrong varient rom flashed so knox may be tripped
Try downlaoding and flashing the original variant and original country rom from samfirmware.com and it might actually do the trick
As for your battery problems, it might be a charger or port problem based on maybe if the cord might be streched more than required accidently or maybe the charger has encountered a fault or power surge so its circuit might have failed to safeguard your phone from over surge of current and over heating.....try using original but substitute charger of someone else
Click to expand...
Click to collapse
Hey mate. Unfortunately I've definitely got the right variants for UK Vodafone, I did use sammobile so I'll give samfirmware a go and see if that fixes it.
The charging thing is an odd one, once the phone boots and is used for 10 or so minutes it will crash, the screen will go black and no matter what trying to reboot, go into recovery or download mode, nothing responds. The only way I've found to get it responding again is if I leave it overnight and plug it in to charge the next day, then it'll start charging and I've tried both mine and my partners cables in both plugs.
I might just take it back to carphone warehouse and tell them whatever has happened during the update has tripped knox and completely ruined my phone, it's only 3 months old to ? they must have a way of finding out if I'd tried to root because if they did, they'd see I've never tried it.
Sent from my SM-J320FN using Tapatalk

LukeC981 said:
Hey mate. Unfortunately I've definitely got the right variants for UK Vodafone, I did use sammobile so I'll give samfirmware a go and see if that fixes it.
The charging thing is an odd one, once the phone boots and is used for 10 or so minutes it will crash, the screen will go black and no matter what trying to reboot, go into recovery or download mode, nothing responds. The only way I've found to get it responding again is if I leave it overnight and plug it in to charge the next day, then it'll start charging and I've tried both mine and my partners cables in both plugs.
I might just take it back to carphone warehouse and tell them whatever has happened during the update has tripped knox and completely ruined my phone, it's only 3 months old to they must have a way of finding out if I'd tried to root because if they did, they'd see I've never tried it.
Sent from my SM-J320FN using Tapatalk
Click to expand...
Click to collapse
Return it. If Stock ROM doesn't fix a problem, the phone is good night

Galactus said:
Return it. If Stock ROM doesn't fix a problem, the phone is good night
Click to expand...
Click to collapse
Since installing Superstock Rom, the phone has, so far, been completely crash free and no random reboots when trying to do something simple like uninstall an app. Fingers crossed it stays this way!
Sent from my SM-G935F using Tapatalk

Search 1st b4 post!
LukeC981 said:
Hey guys I'm newly registered to the forum but have always scrolled through various posts to get answers until this bizarre issue.
I have an SM-G935F and as per the title it randomly shuts off and becomes completely unresponsive. If I connect it to a charger it doesn't recognize it and I've tried the pressing the volume down and power button to simulate battery pull, which doesn't work and I can't get into recovery mode or download mode. If I leave the phone overnight and plug it in to charge the next day, it recognizes the charger, I charge it up to 100% and it's fine again and I can get roughly 20 minutes use out of it before the cycle repeats.
The OTA update kept failing so I updated my phone via Odin with the firmware from sammobile (just the BL and AP files), as I've done several times in the past when OTAs have randomly failed. After flashing with odin, I always enter download mode to check it's all official and it now says warranty void: 1 (0x0500) which I know is KNOX being tripped, but I've never rooted my phone. The binary and system status are both official but I'm baffled as to why KNOX has been tripped.
If anyone has any ideas as to what to do to make my phone stop crashing and turning off, (I know you can't reset the KNOX counter so I'm out of luck there, as frustrating as it is) I'd fully appreciate your help. Using a Samsung J3 after my S7 edge is a painful experience
Thanks in advance guys.
Sent from my SM-J320FN using Tapatalk
Click to expand...
Click to collapse
There's already a thread about this!
Nougat known bugs thread *Updated*

Stuck in bootloop on untouched stock rom, unrooted device.

This afternoon my S7 Edge entered a boot loop. All I was doing was reading the news, in the same app I have been for the past couple of months. The device is untouched in terms of modifications since purchase, so unrooted stock rom. I can get into download mode, and occasionally, recovery mode. I wiped the cache as my first attempted fix - no change. Then did a factory reset - no change. I then thought I'd try loading twrp so I could flash a custom rom, but Odin was unable to flash it due to FRP Lock blocking it. I then downloaded the latest stock rom from sammobile, and was able to flash this via Odin. On first boot the device did start to load, and reached 10/19 in optimising the apps, before starting the boot loop again. I am kinda out of ideas now. Any help would be greatly appreciated.

re: bootloops
whitebloodcell said:
This afternoon my S7 Edge entered a boot loop. All I was doing was reading the news, in the same app I have been for the past couple of months. The device is untouched in terms of modifications since purchase, so unrooted stock rom. I can get into download mode, and occasionally, recovery mode. I wiped the cache as my first attempted fix - no change. Then did a factory reset - no change. I then thought I'd try loading twrp so I could flash a custom rom, but Odin was unable to flash it due to FRP Lock blocking it. I then downloaded the latest stock rom from sammobile, and was able to flash this via Odin. On first boot the device did start to load, and reached 10/19 in optimising the apps, before starting the boot loop again. I am kinda out of ideas now. Any help would be greatly appreciated.
Click to expand...
Click to collapse
Go into settings>developer's options and ENABLE OEM UNLOCK then
go into settings>general management>reset>factory data reset and
reset the phone.
Once you have done that the phone will work properly without rebooting
provided that you have successfully odin flashed the official samsung
G935F S7 Edge firmware prior to doing a factory data reset.
Good luck, have a great day!

Thanks for replying. Unfortunately I can't get into the phone at all. Only screen I have access to a recovery and downloader.

So I left the phone alone for a while and tried booting into safemode. This time it worked - sort of. It is asking me for a password, but I have never set one. I only ever set a pin and fingerprints. But since wiping everything that doesn't seem to apply anymore. What is the default password? I am referring to the phone password, rather than a google account obviously. I am not at that stage of the boot up.
Update: found the password (default_password), still boot looping on the optimising apps screen.

If you still can't get into the phone like the person above said, I would use Oden to reparation and reflash your stock rom. If it still gives you issues, I'd suspect hardware fault.

vsn4 said:
If you still can't get into the phone like the person above said, I would use Oden to reparation and reflash your stock rom. If it still gives you issues, I'd suspect hardware fault.
Click to expand...
Click to collapse
I have flashed stock rom (initially the version that matches my carrier, although my phone was bought sim free and unlocked, and then the version for unlocked phones (BTU in sammobile I think)) but it still just boot loops. The phone can remain in download mode as long as it wants, and previously, when it was asking for the password, it was able to remain on that screen indefinitely. I would have thought if it was a hardware problem the boot looping would happen regardless of the action on screen. Immediately after flashing the stock rom, it did start to load before ooting. Now it just boots immediately at the Samsung Logo.

vsn4 said:
If you still can't get into the phone like the person above said, I would use Oden to reparation and reflash your stock rom. If it still gives you issues, I'd suspect hardware fault.
Click to expand...
Click to collapse
Just to be clear, do you mean repartition here? I have not checked that option before, will try it.

Even without the PIT file. Flashing stock rom should have fixed you... which carrier do you have? If Verizon, they have a recovery assistant software that works in these situations. Or if not try "samsung kies". If all else fails I'd give Sammy a call.

vsn4 said:
If you still can't get into the phone like the person above said, I would use Oden to reparation and reflash your stock rom. If it still gives you issues, I'd suspect hardware fault.
Click to expand...
Click to collapse
vsn4 said:
Even without the PIT file. Flashing stock rom should have fixed you... which carrier do you have? If Verizon, they have a recovery assistant software that works in these situations. Or if not try "samsung kies". If all else fails I'd give Sammy a call.
Click to expand...
Click to collapse
I am in the UK, and my carrier is Three, although the phone was purchased sim free. I tried samsung kies (phone not compatible apparently), samsung switch (phone does not support initialization). I may have to call Samsung, but I purchased the phone on eBay, so no warranty (never doing that again!), so I guess it'll be expensive to get them to sort it. I've taken it to a phone repair shop this afternoon and the guy reckoned he could fix it based on what I said. We shall see. I don't have to pay unless he fixes it, so worth a shot.

You can wipe your phone by entering recovery. Default recovery has the wipe option.

alehawk said:
You can wipe your phone by entering recovery. Default recovery has the wipe option.
Click to expand...
Click to collapse
Was the first thing I tried. Didn't help.

I got the bootloop thingy and was the cache, I wiped and the phone booted up

alehawk said:
I got the bootloop thingy and was the cache, I wiped and the phone booted up
Click to expand...
Click to collapse
Thanks for trying to help, but, again, already tried that.

whitebloodcell said:
I am in the UK, and my carrier is Three, although the phone was purchased sim free. I tried samsung kies (phone not compatible apparently), samsung switch (phone does not support initialization). I may have to call Samsung, but I purchased the phone on eBay, so no warranty (never doing that again!), so I guess it'll be expensive to get them to sort it. I've taken it to a phone repair shop this afternoon and the guy reckoned he could fix it based on what I said. We shall see. I don't have to pay unless he fixes it, so worth a shot.
Click to expand...
Click to collapse
Hope all goes well, let us know if you get it sorted out.

Hi
Just curious...why do u say u don't have warranty just because u brought from eBay?
Surely it doesn't matter where u brought it and it still has warranty.
Have u tried contacting Samsung?

AnubuRe said:
Hi
Just curious...why do u say u don't have warranty just because u brought from eBay?
Surely it doesn't matter where u brought it and it still has warranty.
Have u tried contacting Samsung?
Click to expand...
Click to collapse
Pretty much all warranties (including Samsung - I checked) are contracts with the original purchaser only. Even if you have proof of purchase, you then need to match the records they have of the identity of the original purchaser. Whilst some manufacturers will be more lenient, others will follow the official policy strictly. Speaking from experience here.

whitebloodcell said:
Pretty much all warranties (including Samsung - I checked) are contracts with the original purchaser only. Even if you have proof of purchase, you then need to match the records they have of the identity of the original purchaser. Whilst some manufacturers will be more lenient, others will follow the official policy strictly. Speaking from experience here.
Click to expand...
Click to collapse
For those perhaps in similar situation in the future, Samsung didn't care that it was purchased second hand, despite what the fine print says. They just looked at the serial number. In the course of trying my own repairs I flashed a custom rom, which of course tripped the knox warranty void bit. When I took it into the service centre they saw this and then wanted to charge £225 for an out of warranty repair. I refused at the time. I later called Samsung support and explained the situation (I said a phone repair shop must have done the flashing). Again on the phone I was told it would be an out of warranty repair, and this time I agreed. They collected my phone and returned it to me today however, with no invoice or mention of charges, so it looks like they just did the repair no questions asked.

I have the same issues, so far I'm getting by with flashing a stock rom with pit file and doing repartition and nand erase, normal cache/ factory reset doesn't help, it sometimes even boot loops while in twrp.
Somehow Odin flashing helps for a random amount of time, but it has thus far, crashed after a month, or a couple weeks since the last flash, etc. So far it's been my 5th boot loop event in the last 6 months
It sucks but as I got mine from another country (/win), didn't get the warranty ;( plus I tripped Knox by rooting.

sounds hardware related to me..
i had a friend with a note 4 who had similar problems it would hardly ever boot sometimes boot straight into download mode..
if by chance it did boot it would boot once the device was locked for a short time it would reboot and start over again bootlooping..
it was the emmc flash memory that was failing...
a workaround i found for this was the first thing i did when finally getting it to boot was install "Wake Lock - CPU Awake" and set it to never let the device sleep and to startup on boot...
this "fixed" it as long as your phone does not turn off... he had insurance though and sent it off and they sent him a new refirb
again this note 4 was untouched never rooted or anything

vsn4 said:
If you still can't get into the phone like the person above said, I would use Oden to reparation and reflash your stock rom. If it still gives you issues, I'd suspect hardware fault.
Click to expand...
Click to collapse
im having pretty much the exact same problem except ive been unsuccesful at flashing the stock firmware for my galaxy s7 active (SM-G891A). the active series isnt the most saute after, so finding the right firmware is alil more difficult. which im pretty sure is how i got into this situation! my question is what exacly does checking the "reparation" option do. i read to leave to leave it unchecked/unticked. maybe thats why ive been unsuccessful. and someone told me awhile ago not to fill in the "bt" box becuz i have a locked bootloader. this correct or no?

Sm-g955f bricked - flashing stock firmware only made it worse

Hi All,
So, I have spent 2 days trying to get my Galaxy s8+ back to normal. However, I seem to only have made it worse. It all happened when I decided to change the /data partition from ext4 to another format and then back again to get the /data partition to mount in TWRP after flashing Pascal Rom. However when I rebooted, nothing worked, no boot up screen, no recovery, no life, but all I could get was download mode. It then must of froze up after another restart and I couldn't get anything for 12 hours or so.
The next step I tried once i got download mode again was to flash stock firmware for the G955F, I can't remember the version of this firmware, but I still had nothing change. So then i flashed the latest firmware from SamFirm's downloading client, which was G955FXXU2CRF7 - Australian Optus Branded Firmware (OPS). I was able to get as far as the "hello start screen" and then my phone restarted, it then tried to upgrade my system again, then started "erasing" and then it rebooted and I still had the same issue, nothing but download mode and still no recovery, it still wouldn't turn on. So I flashed the latest International/Unbranded Australian firmware (XSA) - G955FXXU3CRGH, still the same result. I now can't go back to the OPS version of firmware because I get the Check error with the bootloader (since it's a more recent version), so I can't go backwards. I also can only flash "Official Binaries" now. Oh and to make things worse, I read that Odin Option "Nand Erase" just erased user data, so I thought I might as well try it, and as a result, I now can't flash even the (XSA) firmware because of ODIN failing and I now have an "An Error has Occurred while updating the device software. Use the emergency recovery function in the smart switch PC Software.". I am a bloody idiot :good: . Oh, I have tried multiple versions of Both Samsung Kies & Smart Switch (Which both had the option for "recovery & initialisation"), however, I get a message that my device is unsupported after adding in my device model and S/N. I tried a PIT file and then found out it's now included in all the latest firmware img files.. so yeah lol. Fun times. Soooo I feel like I am out of Options, nothing I do is working. The worst of all this is my wife is not happy haha which means after years of tinkering with android phones (flashing custom ROMS, Kernels, Root Solutions, e.c.t ), this may be the end of the road for me if I can't fix this phone. I really hope this thread isn't true too : https://forum.xda-developers.com/galaxy-s8+/help/sm-g955fd-access-download-mode-t3748228
So Please, someone help me out if it is at all fixable even if it requires opening the phone up lol.
The stats i have on download mode are the following:
RMM State as Prenormal
OEM Lock: OFF
FRP Lock: OFF
CARRIER_ID: OPS (which is super weird because it only accepts XSA to be flashed :S )
Secure download: Enabled
System Status: Custom
Warranty Void: 1
Current Binary: Samsun Official
If you need more, just let me know.

Ok, quick update: I have got rid of the error that I mentioned. I managed to flash XSA firmware again, it went to the blue Andriod is updating the system screen, then started "erasing" then rebooted and nothing again, still only download mode available. Nothing happens when I try to turn it on or try recovery mode.

This firmware you mentioned XSA - G955FXXU3CRGH i would double check. As far as I know Australia doesn't have a version 3 bootloader yet whether unbranded.telstra or Optus.

Quick Update: Maybe Fixed now!
Even though no one has replied yet, as it's only been an hour or so. I just wanted to let anyone else know who is experiencing a similar issue in the future on how to possibly fix it.
This was a real nightmare, however quick disclaimer, I am not responsible for any damage incurred to your device/property by following my instructions.
So the way I have fixed it, is I flashed the AP file only (from the firmware zip i had downloaded from SamFirm) with "Auto Reboot" Off. When ODIN finished, I held the Vol Down + power button, to reset it. It gave me a blue "No Command" Screen, I then waited and it then went black and the recovery screen appeared. I cleared the cache, rebooted to bootloader, which it didn't turn back on, so I left it because I thought it was the same thing. Came back 10 mins later and turned it on (or hard restarted, can't remember) and it worked. It booted!
I did soon learn it looks like it was having a charging problem because it had no charge and kept telling me there was water in the port (even though it was dry), I restarted it again after putting it on a wireless charging pad and it is seeming fine so far with the USB charger. So big note to anyone in the future, that it could be possibly bugging out with charging as well if you can't get it back on. I did have the device tell me here and there the last two days that there was water in the port when it was off. So kinda weird.
I know this all sounds a little hocus pocus, superstitious almost, but hey, my phone is working, so maybe replicating my actions may just help lol. :cyclops:

spawnlives said:
This firmware you mentioned XSA - G955FXXU3CRGH i would double check. As far as I know Australia doesn't have a version 3 bootloader yet whether unbranded.telstra or Optus.
Click to expand...
Click to collapse
Oh right, well, I did hear that SamFirm is not supported anymore, as that's where that firmware came from. Maybe it's dishing out incorrect firmware now? Possible the structure of where ever it is getting its firmware from (pretty sure it's pulled from samsung) has possibly been altered?

Just for reference I use www.updato.com for downloading firmware it is usually up to date. No reference to the firmware you mentioned (not for Australia anyway)

The screenshot I took: Imgur link:
https://imgur.com/a/lqyzWW7

Interesting I'll keep a lookout for it. Still on nougat 7.0 (XSA) no plans to upgrade yet until some issues are fully resolved ( out of beta stage that is ).

spawnlives said:
Interesting I'll keep a lookout for it. Still on nougat 7.0 (XSA) no plans to upgrade yet until some issues are fully resolved ( out of beta stage that is ).
Click to expand...
Click to collapse
Yeah, it's seeming to work now, but my fast charge isn't working. However, my other oreo ROM didn't work with fast charge either. So i am unsure if it is my phone or an orio bug :/ lol

Well at least you got it working and not using as a door stop

that was really sad story man.....

spawnlives said:
Well at least you got it working and not using as a door stop
Click to expand...
Click to collapse
Yeah haha, so glad it's not a door stop haha