Database Users

[Q] Phone rebooting randomly - help needed

Hey everyone,
So, I'm pretty new to Android having had the past two iterations of the Nexus 7 and decided to take the leap from an iPhone (which I had jailbroken) to a Samsung Galaxy S4 GT-I9505 LTE, which I bought unlocked and outright.
I ran stock TouchWiz for a while and then wanted to play, so installed FoxHound 3.2. This worked fine for some time, but then I started getting random reboots which seemed to coincide with listening to music on the device. After a while the reboots suddenly became more regular and it got so I couldn't even open WhatsApp without it either restarting or going into a bootloop. Usually, if it went into a bootloop and I tried starting the phone straight away it would fail, but if I left it off for some time it would start up okay, only to reboot again later if I used it for anything. I also noticed the battery draining quickly.
I tried flashing the device with various other ROMs - PACMan, Google AOKP, etc. - but got the same issue. Many times, the system would crash just when I first started to setup the phone. I finally determined the reason it was crashing at the initial startup was that it was when WiFi was being enabled. So, I ended up following a fruitless several hours of attempting to fix the WiFi using files provided on this page: http://forum.xda-developers.com/showthread.php?t=2192025. I tried XXUDMH8, XXUEMJ7 and XXUEMK8 all to no avail - I installed both the firmware and the WiFi fix files using Odin and thought I had it cracked, only for my phone to eventually reboot again whilst WiFi was not even enabled - it did take a bit longer this time though, admittedly, but it still rebooted and went into a bootloop.
So, I finally followed this page: http://galaxys4root.com/galaxy-s4-tutorials/how-to-unroot-galaxy-s4-and-remove-root-completely/ to completely return my device to stock TouchWiz, but still no joy.
I have tried factory resetting the device and wiping all cache from the stock recovery and from Philz CWM (which I had while using the custom ROMs), but this does nothing.
I tried connecting my device to Kies now that I have the stock TouchWiz ROM back on the device, but it is now rebooting even more frequently and I can't get in long enough to run the emergency firmware recovery. It used to stay up longer (sometimes indefinitely) when connected to the PC via the Samsung factory cable or to a power supply with the Samsung charger, but now it is even rebooting when plugged in.
I am extremely worried that my device that cost me nearly £600 a few months ago is bricked for good. I did (understandably) think that returning it to default would've resolved the issue, but even this has failed.
Is there ANYTHING else I can try that I have not already........?

KalarAzar said:
Is there ANYTHING else I can try that I have not already........?
Click to expand...
Click to collapse
hello mate, what bootloader do you have?(Boot into download mode too see if it says Knox void warranty or not) and can you still boot into download mode? thanks

Repulsa said:
hello mate, what bootloader do you have?(Boot into download mode too see if it says Knox void warranty or not) and can you still boot into download mode? thanks
Click to expand...
Click to collapse
Hi and thanks for your reply,
I can boot into download mode - one of the only things I can do! - and it says 0x1 under KNOX WARRANTY VOID, so yes it is showing Knox void.
Just in case you need it, the full information shown on the screen in download mode is as follows:
ODIN MODE
PRODUCT NAME: GT-I9505
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Official
KNOX KERNEL LOCK: 0x0
KNOX WARRANTY VOID: 0x1
CSB-CONFIG-LSB: 0x30
WRITE PROTECTION: Enable
eMMC BURST MODE enabled
Thanks again..

KalarAzar said:
Thanks again..
Click to expand...
Click to collapse
I want you to flash the 4.3 stock rom firmware from samsung (Sign up)www.sammobile.com/firmwares/1/ make sure to choose the right one such as device, country . Then when your done flash the file via odin 3.09 and select AP ,Or follow the instruction from here, how to do a proper flash. http://forum.xda-developers.com/showthread.php?t=2252982 . have a nice day.

Repulsa said:
I want you to flash the 4.3 stock rom firmware from samsung (Sign up)www.sammobile.com/firmwares/1/ make sure to choose the right one such as device, country . Then when your done flash the file via odin 3.09 and select AP ,Or follow the instruction from here, how to do a proper flash. http://forum.xda-developers.com/showthread.php?t=2252982 . have a nice day.
Click to expand...
Click to collapse
Hey Repulsa,
Thanks again. Unfortunately, this is what I did. I signed up at samfirmware and downloaded the file: I9505XXUEMK8_I9505BTUEMK5_BTU.zip
The only thing I did different was that I used Odin 3.07 and flashed using the PDA option, but I'm presuming this is the same thing..? After the bootloop, I went into recovery and factory reset, but still the bootloop occurs.
I have since managed to get into my phone after leaving it off for a couple of hours again and looking through the settings it says I have "Samsung" as the secure boot status and "Official" as the device status. The build number is showing up as JSS15J.I9505XXUEMK8 on Android 4.3.
Should I try anything else that you can think of?
Thanks again for the reply.

KalarAzar said:
Hey Repulsa,
Thanks again. Unfortunately, this is what I did. I signed up at samfirmware and downloaded the file: I9505XXUEMK8_I9505BTUEMK5_BTU.zip
The only thing I did different was that I used Odin 3.07 and flashed using the PDA option, but I'm presuming this is the same thing..? After the bootloop, I went into recovery and factory reset, but still the bootloop occurs.
I have since managed to get into my phone after leaving it off for a couple of hours again and looking through the settings it says I have "Samsung" as the secure boot status and "Official" as the device status. The build number is showing up as JSS15J.I9505XXUEMK8 on Android 4.3.
Should I try anything else that you can think of?
Thanks again for the reply.
Click to expand...
Click to collapse
is the problem still persist? if it does Turn off your phone and Press and hold Power+Volume up and do another Wipe cache and Factory reset.

Repulsa said:
is the problem still persist? if it does Turn off your phone and Press and hold Power+Volume up and do another Wipe cache and Factory reset.
Click to expand...
Click to collapse
Yes, I'm afraid it does, and I have already done the wipe cache and factory reset, but no joy. I did it again anyway and on reboot it went back into the bootloop again, I'm afraid..

KalarAzar said:
Hey everyone,
So, I'm pretty new to Android having had the past two iterations of the Nexus 7 and decided to take the leap from an iPhone (which I had jailbroken) to a Samsung Galaxy S4 GT-I9505 LTE, which I bought unlocked and outright.
I ran stock TouchWiz for a while and then wanted to play, so installed FoxHound 3.2. This worked fine for some time, but then I started getting random reboots which seemed to coincide with listening to music on the device. After a while the reboots suddenly became more regular and it got so I couldn't even open WhatsApp without it either restarting or going into a bootloop. Usually, if it went into a bootloop and I tried starting the phone straight away it would fail, but if I left it off for some time it would start up okay, only to reboot again later if I used it for anything. I also noticed the battery draining quickly.
I tried flashing the device with various other ROMs - PACMan, Google AOKP, etc. - but got the same issue. Many times, the system would crash just when I first started to setup the phone. I finally determined the reason it was crashing at the initial startup was that it was when WiFi was being enabled. So, I ended up following a fruitless several hours of attempting to fix the WiFi using files provided on this page: http://forum.xda-developers.com/showthread.php?t=2192025. I tried XXUDMH8, XXUEMJ7 and XXUEMK8 all to no avail - I installed both the firmware and the WiFi fix files using Odin and thought I had it cracked, only for my phone to eventually reboot again whilst WiFi was not even enabled - it did take a bit longer this time though, admittedly, but it still rebooted and went into a bootloop.
So, I finally followed this page: http://galaxys4root.com/galaxy-s4-tutorials/how-to-unroot-galaxy-s4-and-remove-root-completely/ to completely return my device to stock TouchWiz, but still no joy.
I have tried factory resetting the device and wiping all cache from the stock recovery and from Philz CWM (which I had while using the custom ROMs), but this does nothing.
I tried connecting my device to Kies now that I have the stock TouchWiz ROM back on the device, but it is now rebooting even more frequently and I can't get in long enough to run the emergency firmware recovery. It used to stay up longer (sometimes indefinitely) when connected to the PC via the Samsung factory cable or to a power supply with the Samsung charger, but now it is even rebooting when plugged in.
I am extremely worried that my device that cost me nearly £600 a few months ago is bricked for good. I did (understandably) think that returning it to default would've resolved the issue, but even this has failed.
Is there ANYTHING else I can try that I have not already........?
Click to expand...
Click to collapse
it can be a bad battery aswell if your battery serial starts with BD exchange it asap you may also experience any issues mentioned in this thread http://forum.xda-developers.com/showthread.php?t=2570608

Acer4605 said:
it can be a bad battery aswell if your battery serial starts with BD exchange it asap you may also experience any issues mentioned in this thread http://forum.xda-developers.com/showthread.php?t=2570608
Click to expand...
Click to collapse
Ah FFS. My battery serial does start with BD and I was wondering if it was a battery issue, but didn't want to replace it if the fault was wider spread. I guess I may have to try this then..
I'm just flashing to MJ7 right now, but if it reboots again I will see about a new battery from where I bought it on Monday

And, as I forgot to say in the last post: thanks for your reply. If this fixes it, much kudos, my friend..

Yep. The flashing of MJ7 did not work. Maybe my battery is a dud as it went straight back into a bootloop at the Samsung logo.
Carphone Warehouse visit on Monday methinks..

KalarAzar said:
Yep. The flashing of MJ7 did not work. Maybe my battery is a dud as it went straight back into a bootloop at the Samsung logo.
Carphone Warehouse visit on Monday methinks..
Click to expand...
Click to collapse
you can get passed the samsung logo if you boot while your charger is connected to the phone, the battery might swell as well or is already bigger then it originally was

My phone has been randomly shutting down over the past couple of days and the only way I can get it to boot is to connect a charger/cable to pc. I've tried different ROMs and returning to stock. No joy.
I guess my battery could well be the problem
---------- Post added at 11:33 AM ---------- Previous post was at 11:28 AM ----------
My phone has randomly started shutting down over the past couple of days and the only way I can get it to boot is to connect charger/cable to pc. When it dies, it also loses all of my wifi passwords. It's a bit of a head scratcher. Any help appreciated

Definately the battery, dude
I was experiencing the same problems, and I observed that the battery swollen. So I replaced it and now the phone is functioning properly. Do not wait for the battery to modify its volume because you are risking to put pressure on the display and crack it. Beware.

Was, indeed, the battery
Hey everyone,
Just to let you know that I went back to Phones4u with the receipt from September (when I bought the new phone) and they filled out a form to request a new battery from Samsung and replaced mine their and then in the shop with a new battery from another Samsung Galaxy S4.
My old battery did, indeed, have a serial number that started with BD and the new one starts with AA so hopefully I am now sorted.
Massive thanks to everyone who replied and hopefully this thread will save someone else the time and lost data that flashing ROMs can incur.
Cheers,
A very happy Steve :laugh:

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

Felt confident, shouldnt have

I recently carrier unlocked my SM-G935P (2016 version) from Sprint and brought it over to ATT. All was working fine but wanted to get rid of the Sprint bloatware. After spending most of the day reading threads of flashing, felt confident that I could walk through flashing over to "U" FW. This is my first attempt at flashing and it has FAILED!
Used ODIN 3.12 , and files from UPDATO
It failed after first attempt and then was stuck in boot loop
I then realized that I never set the Developer options before flashing
have tried flashing back to half dozen different version stocks, deep clean flash, and various other work arounds I have seen on here to no avail
Only things that have PASS since the initial FAIL have been when I tried various BL individually, but no change in device
I am at the point that I can only access Download screen and ODIN still recognizes. Other option is the device starts to open in Recovery Boot, Installing Software Update comes up, about 10 lines of code start scrolling then phone goes black.
I'm still OFFICIAL, FRP Lock on, warranty void is 0x0 and AP SWREV is B5(2, 1, 1, 1, 1) K1 S4, and Secure Download is Enabled
I'm way past my comfort and capability in trying to get this even back to stock. Any guidance would be greatly appreciated... Finally broke free of the Sprint chains and on the edge of bricking my phone!

PA_Pyroholic said:
I recently carrier unlocked my SM-G935P (2016 version) from Sprint and brought it over to ATT. All was working fine but wanted to get rid of the Sprint bloatware. After spending most of the day reading threads of flashing, felt confident that I could walk through flashing over to "U" FW. This is my first attempt at flashing and it has FAILED!
Used ODIN 3.12 , and files from UPDATO
It failed after first attempt and then was stuck in boot loop
I then realized that I never set the Developer options before flashing
have tried flashing back to half dozen different version stocks, deep clean flash, and various other work arounds I have seen on here to no avail
Only things that have PASS since the initial FAIL have been when I tried various BL individually, but no change in device
I am at the point that I can only access Download screen and ODIN still recognizes. Other option is the device starts to open in Recovery Boot, Installing Software Update comes up, about 10 lines of code start scrolling then phone goes black.
I'm still OFFICIAL, FRP Lock on, warranty void is 0x0 and AP SWREV is B5(2, 1, 1, 1, 1) K1 S4, and Secure Download is Enabled
I'm way past my comfort and capability in trying to get this even back to stock. Any guidance would be greatly appreciated... Finally broke free of the Sprint chains and on the edge of bricking my phone!
Click to expand...
Click to collapse
With the last ROM I've tried to use, on the device the red text comes up saying SW REV CHECK FAIL : [aboot] Fused 5 > Binary 2
Is there a different ROM I should be trying?

PA_Pyroholic said:
With the last ROM I've tried to use, on the device the red text comes up saying SW REV CHECK FAIL : [aboot] Fused 5 > Binary 2
Is there a different ROM I should be trying?
Click to expand...
Click to collapse
It sounds like you may have gotten sprint's update, not sure tho. Check your software version by going to about phone. If it ends with something like 5BRA1 (the 5 is whats important as that stands for binary ver. 5) then you might not be able to use the U firmware. You can try the U FW from this post: https://forum.xda-developers.com/sprint-s7-edge/how-to/successful-root-g935u-g935uueu4bqd2-t3598647
If that FW does not work, then you will either have to wait til they update the U FW to binary 5 or see if sprint can reload the OS, I would recommend asking them if they can give you an older version of the OS so you can use the U FW.

Fear_The_Fluff said:
It sounds like you may have gotten sprint's update, not sure tho. Check your software version by going to about phone. If it ends with something like 5BRA1 (the 5 is whats important as that stands for binary ver. 5) then you might not be able to use the U firmware. You can try the U FW from this post: https://forum.xda-developers.com/sprint-s7-edge/how-to/successful-root-g935u-g935uueu4bqd2-t3598647
If that FW does not work, then you will either have to wait til they update the U FW to binary 5 or see if sprint can reload the OS, I would recommend asking them if they can give you an older version of the OS so you can use the U FW.
Click to expand...
Click to collapse
I did get the update to 5 unfortunately and am no longer with sprint, paid everything off an account is closed. I did some more digging and realized many mistakes yesterday. I tried the latest 'U' FW (binary 4), it failed, and then I tried the latest 'P' FW (binary 5) right afterwards and it failed... But I didn't cycle the phone in between attempts so of course it was going to fail. Ended up reflashing with the latest 'P', and went through the easy, "just say yes to everything" set up and all the bloatware reloaded onto it. Reflashed and wiped device, and was careful this time... 90% of the bloatware I wanted was gone. Package disabled the rest. Only thing I can't seem to get rid of is the Sprint logos on start up.
After stumbling my way through this first attempt, I'll do better research next time!
Sent from my SM-G935P using Tapatalk

PA_Pyroholic said:
I recently carrier unlocked my SM-G935P (2016 version) from Sprint and brought it over to ATT. All was working fine but wanted to get rid of the Sprint bloatware. After spending most of the day reading threads of flashing, felt confident that I could walk through flashing over to "U" FW. This is my first attempt at flashing and it has FAILED!
Used ODIN 3.12 , and files from UPDATO
It failed after first attempt and then was stuck in boot loop
I then realized that I never set the Developer options before flashing
have tried flashing back to half dozen different version stocks, deep clean flash, and various other work arounds I have seen on here to no avail
Only things that have PASS since the initial FAIL have been when I tried various BL individually, but no change in device
I am at the point that I can only access Download screen and ODIN still recognizes. Other option is the device starts to open in Recovery Boot, Installing Software Update comes up, about 10 lines of code start scrolling then phone goes black.
I'm still OFFICIAL, FRP Lock on, warranty void is 0x0 and AP SWREV is B5(2, 1, 1, 1, 1) K1 S4, and Secure Download is Enabled
I'm way past my comfort and capability in trying to get this even back to stock. Any guidance would be greatly appreciated... Finally broke free of the Sprint chains and on the edge of bricking my phone!
Click to expand...
Click to collapse
Unfortunately, your phone is on the newest firmware, B5. You'll only be able to flash one of the latest sprint firmwares to get your phone to work. All the other carriers and U firmware are still running an older binary boot. You may also need the special version of ODIN...you can probably find it in the same forum about installing the U firmware. But if you download the latest sprint firmware, your phone should boot again.

Help with NFC Crashing - AT&T S8 Active

Hey,
Need some help. My brand new AT&T S8 Active arrived yesterday. Since I am located outside the US I'm stuck with utilising Odin to update the software.
The current version listed on the AT&T website was 5CSK1 and I was able to track down the update:
https://forum.xda-developers.com/showpost.php?p=81251867&postcount=743
It installed successfully, everything is going well however I am unable turn on NFC. The toggle found in the settings menu is off and when I attempt to switch it on it greys out for a few seconds then the 'NFC keeps stopping' error appears on the bottom of the screen.
I've cleared the cache/data for the NFC app - no luck,
I've performed a factory reset via recovery menu - no luck.
I've installed the previous build 5CSJ3 from: https://forum.xda-developers.com/showpost.php?p=80903399&postcount=187 with a factory reset straight after - no luck.
I'm currently back on the latest K1 build.
Logcat shows errors with 'libnfc_nci' and a 'Fatal Exception' for the 'com.android.nfc' process. And to top it all off the NFC app is draining my battery.
If anyone can help me that would be awesome.

dchalkley said:
Hey,
Need some help. My brand new AT&T S8 Active arrived yesterday. Since I am located outside the US I'm stuck with utilising Odin to update the software.
The current version listed on the AT&T website was 5CSK1 and I was able to track down the update:
https://forum.xda-developers.com/showpost.php?p=81251867&postcount=743
It installed successfully, everything is going well however I am unable turn on NFC. The toggle found in the settings menu is off and when I attempt to switch it on it greys out for a few seconds then the 'NFC keeps stopping' error appears on the bottom of the screen.
I've cleared the cache/data for the NFC app - no luck,
I've performed a factory reset via recovery menu - no luck.
I've installed the previous build 5CSJ3 from: https://forum.xda-developers.com/showpost.php?p=80903399&postcount=187 with a factory reset straight after - no luck.
I'm currently back on the latest K1 build.
Logcat shows errors with 'libnfc_nci' and a 'Fatal Exception' for the 'com.android.nfc' process. And to top it all off the NFC app is draining my battery.
If anyone can help me that would be awesome.
Click to expand...
Click to collapse
ugh, the active line... there hasnt ever been much support for those. All you can really do is keep flashing the stock firmware and hope that the errors resolve themselves.
Side note: have you noticed how they stopped making the active phones? They were a dismal failure. All they are is the regular phone in a case that you cant take off :/

dchalkley said:
Hey,
Need some help. My brand new AT&T S8 Active arrived yesterday. Since I am located outside the US I'm stuck with utilising Odin to update the software.
The current version listed on the AT&T website was 5CSK1 and I was able to track down the update:
https://forum.xda-developers.com/showpost.php?p=81251867&postcount=743
It installed successfully, everything is going well however I am unable turn on NFC. The toggle found in the settings menu is off and when I attempt to switch it on it greys out for a few seconds then the 'NFC keeps stopping' error appears on the bottom of the screen.
I've cleared the cache/data for the NFC app - no luck,
I've performed a factory reset via recovery menu - no luck.
I've installed the previous build 5CSJ3 from: https://forum.xda-developers.com/showpost.php?p=80903399&postcount=187 with a factory reset straight after - no luck.
I'm currently back on the latest K1 build.
Logcat shows errors with 'libnfc_nci' and a 'Fatal Exception' for the 'com.android.nfc' process. And to top it all off the NFC app is draining my battery.
If anyone can help me that would be awesome.
Click to expand...
Click to collapse
Might try redownloading a different firmware from a differ location. I had this issue on a lg back in the day the camera wouldnt work no matter what I always restored stock with one firm I had. And it ended up being a bad download. Another possibility is a bad NFC chip. If it's new I'd have it warranted

Thankyou, Thankyou Youdoofus and TheMadScientist for your advice.
Woke up early today (3am) with coffee in hand I tried again downloading the K1 and J3 builds; neither worked.
Unfortunately there's no alternative download for them... Google points to the XDA forums which seem to come from some Russian forum.
I've gone to an earlier build - 5CSI3 - https://forum.xda-developers.com/showpost.php?p=80505887&postcount=186 which works.
So it's not a NFC chip issue, yay. Now, just need to figure out what I'll do when the next update hits at the end of this month.

dchalkley said:
Thankyou, Thankyou Youdoofus and TheMadScientist for your advice.
Woke up early today (3am) with coffee in hand I tried again downloading the K1 and J3 builds; neither worked.
Unfortunately there's no alternative download for them... Google points to the XDA forums which seem to come from some Russian forum.
I've gone to an earlier build - 5CSI3 - https://forum.xda-developers.com/showpost.php?p=80505887&postcount=186 which works.
So it's not a NFC chip issue, yay. Now, just need to figure out what I'll do when the next update hits at the end of this month.
Click to expand...
Click to collapse
Make sure your using the latest odin build 3.13. I dont have an active. **** I read it wrong so it does work on other builds?

TheMadScientist said:
Make sure your using the latest odin build 3.13. I dont have an active. **** I read it wrong so it does work on other builds?
Click to expand...
Click to collapse
Yeah, it's working on the 5CSI3 build from October 2019, there's been two recent updates since then (and another will come at the end of the month). I don't know what's happening as no one else has reported this issue .
Just wanting to be on the most recent version for security and the annoyance of having data wiped every update.
Edit: Yeah, Odin v3.13.1 . No errors being displayed, all green.

This issue is very likely to be caused by 3rd party sim unlock or FRP removal and meddling with knox.
I have been trying to get around this problem and it seems it is either a security measure to disable nfc payments on triggering knoxguard or problem with modem.
this problem started after CSJ3 update afaik and only on some phones, if someone can explain this would be great.
Solution:
You will lose all data so backup is recommended
Remove your SIM card, re-install the firmware with ODIN and check Nand Erase auto reboot and F. reset time
Check your KG status(checking or prenormal) on the bootloader, and in settings>device care you will see Security is disabled and it crashes when you click it.
I also noticed the settings menu is weird with many broken options and dailer codes dont work anymore.
EDIT: Workaround Solution:
THIS IS FOR G892A ONLY who have problem with NFC after updating to builds after December 2019
Disclaimer: do at your own risk and can break your phone signal or system detected as rooted/custom
note: you will lose all data, ONLY check "Auto Reboot" and "F. Reset Time" in odin
1) Backup your data
2) Delete your google account, so FRP : OFF in bootloader (this can cause problems if not done)
3) Flash 5 firmware files G892AUCS5CTC1 (latest rom with march 2020 security) and get back to bootloader
4) Flash 3 files from G892AUCS5CSI3 : BL, CP and CSC
(odin will say PASS, but recovery will give error)
5) select wipe data partition then reboot to system
when the phone starts you will see NFC logo in statusbar means you are successful
if you get errors while using odin: flash combination file : G892AUCU5ASD1 if this doesnt work it means you have different problem (cable, socket, pc, bad chip)
i tried flashing CP file only and phone booted into UPLOAD mode, so dont panic if you get into UPLOAD mode just reboot with 3 buttons to recovery and start over

Vcek said:
This issue is very likely to be caused by 3rd party sim unlock or FRP removal and meddling with knox.
I have been trying to get around this problem and it seems it is either a security measure to disable nfc payments on triggering knoxguard or problem with modem.
this problem started after CSJ3 update afaik and only on some phones, if someone can explain this would be great.
Solution:
You will lose all data so backup is recommended
Remove your SIM card, re-install the firmware with ODIN and check Nand Erase auto reboot and F. reset time
Check your KG status(checking or prenormal) on the bootloader, and in settings>device care you will see Security is disabled and it crashes when you click it.
I also noticed the settings menu is weird with many broken options and dailer codes dont work anymore.
EDIT: Workaround Solution:
THIS IS FOR G892A ONLY who have problem with NFC after updating to builds after December 2019
Disclaimer: do at your own risk and can break your phone signal or system detected as rooted/custom
note: you will lose all data, ONLY check "Auto Reboot" and "F. Reset Time" in odin
1) Backup your data
2) Delete your google account, so FRP : OFF in bootloader (this can cause problems if not done)
3) Flash 5 firmware files G892AUCS5CTC1 (latest rom with march 2020 security) and get back to bootloader
4) Flash 3 files from G892AUCS5CSI3 : BL, CP and CSC
(odin will say PASS, but recovery will give error)
5) select wipe data partition then reboot to system
when the phone starts you will see NFC logo in statusbar means you are successful
if you get errors while using odin: flash combination file : G892AUCU5ASD1 if this doesnt work it means you have different problem (cable, socket, pc, bad chip)
i tried flashing CP file only and phone booted into UPLOAD mode, so dont panic if you get into UPLOAD mode just reboot with 3 buttons to recovery and start over
Click to expand...
Click to collapse
Hello There!..kind of new about this so..long story short..
Phone had Android 8, and I really love Night mode on Android 9, so...I've found BL, AP, CP, CSC, USER Data ROM for GALAXY S8 ACTIVE AT&T Unlocked, however..I am a little bit afraid of any NAND Erase.
I am not an expert, but I can tell you are. By any chance do you have any vide or graphic tutorial abot how you can perform these actions? It is very odd that I am unable to have any *# codes working, and lately, I've received this odd message about NFC Service has stopped, so...any graphic step by step guide will be highly appreciated it.
I've tried ....soft reset, then factory reset, then flash again ODIN (BL, AP,CP, CSC and USER DATA ) But I have no idea how to back up my data, and it will be very helpful to have G892AUCS5CSI3 as well.
Thank you very much for your time, I hope you can help me and I appreciate very much your time.
The one that I have is AP_G892AUCS5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT_meta_OS9.tar
BL_G892AUCS5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar
CP_G892AUCS5CTC1_CP15398738_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar
CSC_ATT_G892AATT5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar
USERDATA_G892AUCS5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar

SOLVED!
So...I've followed the steps to install only BL, CP and CSC using G892AUCS5CSI3...however, the system started as usual, and actually did not work =(
RESOLUTION:
INSTALL THE FULL G892AUCS5CSI3. Worked as magic =)
thank you for the thread!!

moncd6 said:
Hello There!..kind of new about this so..long story short..
Phone had Android 8, and I really love Night mode on Android 9, so...I've found BL, AP, CP, CSC, USER Data ROM for GALAXY S8 ACTIVE AT&T Unlocked, however..I am a little bit afraid of any NAND Erase.
I am not an expert, but I can tell you are. By any chance do you have any vide or graphic tutorial abot how you can perform these actions? It is very odd that I am unable to have any *# codes working, and lately, I've received this odd message about NFC Service has stopped, so...any graphic step by step guide will be highly appreciated it.
I've tried ....soft reset, then factory reset, then flash again ODIN (BL, AP,CP, CSC and USER DATA ) But I have no idea how to back up my data, and it will be very helpful to have G892AUCS5CSI3 as well.
Thank you very much for your time, I hope you can help me and I appreciate very much your time.
The one that I have is AP_G892AUCS5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT_meta_OS9.tar
BL_G892AUCS5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar
CP_G892AUCS5CTC1_CP15398738_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar
CSC_ATT_G892AATT5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar
USERDATA_G892AUCS5CTC1_CL16888298_QB29841048_REV00_user_low_ship_MULTI_CERT.tar
Click to expand...
Click to collapse
You can backup your data with Samsung backup and restore to Samsung cloud or to your PC with Samsung's Smart Switch app.
As for tutorial I'll try to make one with images for the latest ROM G892AUCU5CTF4 dated 20-Aug-2020 with August security patch. I'll upload it later as I still have to backup my phone before updating.

Thanks!
Thank you so much!
Is it G892AUCU5CTF4 a estable versión for S8 Active? Or does it has any other bugs? I had to "downgrade" and now things are pretty cool, however, I would love to have the newest version. Thank you!

moncd6 said:
Thank you so much!
Is it G892AUCU5CTF4 a estable versión for S8 Active? Or does it has any other bugs? I had to "downgrade" and now things are pretty cool, however, I would love to have the newest version. Thank you!
Click to expand...
Click to collapse
It doesn't have any bugs but some people have issue with flashing new builds, if you have this issue just install CSI3 build or earlier

dchalkley said:
It installed successfully, everything is going well however I am unable turn on NFC. The toggle found in the settings menu is off and when I attempt to switch it on it greys out for a few seconds then the 'NFC keeps stopping' error appears on the bottom of the screen.
I've cleared the cache/data for the NFC app - no luck,
I've performed a factory reset via recovery menu - no luck.
I've installed the previous build 5CSJ3 from: https://forum.xda-developers.com/showpost.php?p=80903399&postcount=187 with a factory reset straight after - no luck.
... And to top it all off the NFC app is draining my battery.
Click to expand...
Click to collapse
Same. I also tried CTA2 and CTL1. Everything after CSI3 has NFC crashing and excessive battery drain. I've tried multiple flashes on multiple phones.
dchalkley said:
I tried again downloading the K1 and J3 builds; neither worked.
Unfortunately there's no alternative download for them... Google points to the XDA forums which seem to come from some Russian forum.
I've gone to an earlier build - 5CSI3 - https://forum.xda-developers.com/showpost.php?p=80505887&postcount=186 which works.
So it's not a NFC chip issue, yay. Now, just need to figure out what I'll do when the next update hits at the end of this month.
Click to expand...
Click to collapse
Same.
dchalkley said:
I don't know what's happening as no one else has reported this issue .
Edit: Yeah, Odin v3.13.1 . No errors being displayed, all green.
Click to expand...
Click to collapse
Same here. I used Odin 3.14.1, though.
Vcek said:
Solution:
You will lose all data so backup is recommended
Remove your SIM card, re-install the firmware with ODIN and check Nand Erase auto reboot and F. reset time
Click to expand...
Click to collapse
This did not work for me, not even with "Nand Erase" checked.
moncd6 said:
It is very odd that I am unable to have any *# codes working, and lately, I've received this odd message about NFC Service has stopped, so...
Click to expand...
Click to collapse
Same. The problem of the secret dialer codes not working parallels the NFC problem for me; that is to say that it doesn't work on any firmware after CSI3.

moncd6 said:
SOLVED!
So...I've followed the steps to install only BL, CP and CSC using G892AUCS5CSI3...however, the system started as usual, and actually did not work =(
RESOLUTION:
INSTALL THE FULL G892AUCS5CSI3. Worked as magic =)
thank you for the thread!!
Click to expand...
Click to collapse
Can you please upload G892AUCS5CSI3? it's all dead links i got

rerenz said:
Can you please upload G892AUCS5CSI3? it's all dead links i got
Click to expand...
Click to collapse
Same. I'm not sure where I originally got it from, but here's a reupload from my archives. I created a list of MD5 checksums if you care to check the five files for corruption.

voidxor said:
Same. I'm not sure where I originally got it from, but here's a reupload from my archives. I created a list of MD5 checksums if you care to check the five files for corruption.
Click to expand...
Click to collapse
Finally, it works! My NFC is back. Thanks, pal.

Well, that didn't go well

Tab 5se Stock firmware
So I bought a 3rd 5se from a third party, all I checked for was for FRP lock, well it wasn't locked, but when I got it home and rebooted, it says is has a unlocked bootloader. So I hard factory reset it and now it states that only stock firmware can be installed in boot and won't go any further.
So I'm guessing I need to use ODIN to flash a factory ROM but I'm not sure which one as I can't seem to find a USA one on Sammoble, I do see a Canada one though.
Which version of ODIN should I use (WIN 10)
Which ROM, I'm in the USA, WIFI ONLY SM-T720, country code ?
Any other tips, as I haven't flashed anything in almost a decade probably.
Need to get this back to all stock, help

You want the XAR country code version which is the US rom. For Odin, use the newest version for our tablet. Good luck.

puredigital said:
Tab 5se Stock firmware
So I bought a 3rd 5se from a third party, all I checked for was for FRP lock, well it wasn't locked, but when I got it home and rebooted, it says is has a unlocked bootloader. So I hard factory reset it and now it states that only stock firmware can be installed in boot and won't go any further.
So I'm guessing I need to use ODIN to flash a factory ROM but I'm not sure which one as I can't seem to find a USA one on Sammoble, I do see a Canada one though.
Which version of ODIN should I use (WIN 10)
Which ROM, I'm in the USA, WIFI ONLY SM-T720, country code ?
Any other tips, as I haven't flashed anything in almost a decade probably.
Need to get this back to all stock, help
Click to expand...
Click to collapse
I use Frija instead of Sammobile to get the latest stock. Just use SM-T720 as the model and XAR as the CSC. If you search for how to unlock the bootloader, you can use the same proceedure to relock it. It should perform a factory reset as part of the process and you might not need to reflash a ROM.

Not sure..
Since the device won't turn off, restart nor go into download mode
Aqua blue sorta cyan screen. Top in red (like a terminal response) says," Only official released binaries are allowed to be flashed (vbmeta)"
Then on main screen in center;
Security Error: This phone has been flashed with unauthorized software & is locked. Call your mobile operator for additional support
lewmur said:
I use Frija instead of Sammobile to get the latest stock. Just use SM-T720 as the model and XAR as the CSC. If you search for how to unlock the bootloader, you can use the same proceedure to relock it. It should perform a factory reset as part of the process and you might not need to reflash a ROM.
Click to expand...
Click to collapse

puredigital said:
Since the device won't turn off, restart nor go into download mode
Aqua blue sorta cyan screen. Top in red (like a terminal response) says," Only official released binaries are allowed to be flashed (vbmeta)"
Then on main screen in center;
Security Error: This phone has been flashed with unauthorized software & is locked. Call your mobile operator for additional support
Click to expand...
Click to collapse
The only time a ran into a situation where I couldn't turn off that tablet, I just had to put it aside for a day or so till the battery ran down. Then use the method of holding both vol up and down, and NOT power, and then plugging in the cable from the PC. Must be from PC and not charger.

puredigital said:
Since the device won't turn off, restart nor go into download mode
Aqua blue sorta cyan screen. Top in red (like a terminal response) says," Only official released binaries are allowed to be flashed (vbmeta)"
Then on main screen in center;
Security Error: This phone has been flashed with unauthorized software & is locked. Call your mobile operator for additional support
Click to expand...
Click to collapse
I ran into this recently when I went back to stock to get the fingerprint for Magisk Module and then went back to Lineage. You just need to Odin the factory firmware. The tablet will turn off, I think the key combination to force it off is power and volume down? Its been a few weeks, but I was able to get back into download mode. I found other threads for samsung phones that had this same issue and basically used them as rough guides.
As mentioned you just need to use XAR ROMs, your box should say XAR. I believe both Canada and Cellular South ROMs will come up as XAR roms IIRC?

Bruh. I had the same issue and you will not be able to flash your way around and FRP lock. I found a guy on eBay to remove the FRP lock and NOT through flashing. For $10 is was done in 10 minutes. I get if you want to figure it out. I'm a flasher and love to figure this **** out too but with a recent update Samsung blocks this. Trust me. Spend $10 and it's done. Also many people say they can do this on eBay. I only recommend this guy: https://www.ebay.com/itm/273424666857. Just select a new auction of his and message him.
Sent from my SM-T720 using Tapatalk

elcidroyale said:
Bruh. I had the same issue and you will not be able to flash your way around and FRP lock. I found a guy on eBay to remove the FRP lock and NOT through flashing. For $10 is was done in 10 minutes. I get if you want to figure it out. I'm a flasher and love to figure this **** out too but with a recent update Samsung blocks this. Trust me. Spend $10 and it's done. Also many people say they can do this on eBay. I only recommend this guy: https://www.ebay.com/itm/273424666857. Just select a new auction of his and message him.
Sent from my SM-T720 using Tapatalk
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He said he checked to make sure this was not the FRP lock. Assuming this is the same message I got which says only official binaries can be flashed, please take this to a service center and it there maybe a cost involved (obviously I'm paraphrasing), you can fix it with Odin. I was on the latest firmware as well, as I updated fully to get the fingerprint for the MagiskHide module. This sounds like a different issue, to me.
I mean if that works it's $10 well spent I guess.

Oh my apologies as I misread his post. I just saw "FRP" and chimed in. Hope he gets it sorted out.
OhioYJ said:
He said he checked to make sure this was not the FRP lock. Assuming this is the same message I got which says only official binaries can be flashed, please take this to a service center and it there maybe a cost involved (obviously I'm paraphrasing), you can fix it with Odin. I was on the latest firmware as well, as I updated fully to get the fingerprint for the MagiskHide module. This sounds like a different issue, to me.
I mean if that works it's $10 well spent I guess.
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Almost !
Well, I finally reflashed the device with factory stuff, it's working fine now, no locks, except now it tells me the bootloader is unlocked on boot. I flashed it with Odin, no options, just loaded the 4 files and done.
How do I get this to STOCK, out of the box status. Steps ?