[Q] Phone stuck in a degrading boot loop - Sprint Samsung Galaxy Note II

I have been an XDA lurker for years and have never had a need to post since everyone on here is so great about solving issues as they emerge. Anyway I have searched high and low for any answers to my problem with no success. My phone was rooted running a kit kat rom (Dirty Unicorns) when this issue occurred. A couple days ago I sent a mms and noticed my data was off so I turned it on via the power menu and my phone rebooted. Now this is something I have encountered with certain custom roms so I thought nothing of it. The phone went through the reboot process but then it rebooted again after about 3 minutes of normal operation. Since then the time to reboot has gotten worse until now it wont go past the Samsung boot screen. I have tried nandroid restores, cache/data wipes, and finally pushing stock roms via ODIN. None of these change the reboot behavior. Finally, as if everything else wasn't enough, I can no longer flash roms via any custom recovery. This to was something that also degraded over time. At first I was able to flash .zip files for the first few hours but eventually that to would also send my phone into a bootloop. I am clueless what to try next. Any help would be greatly appreciated. Thanks.

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[Q] BRICKED! Bootloop VZW HELP!

Dear XDA,
I have tried all I can to fix this problem. Let me explain how it all started.
I was using my phone normally, running the same custom rom ive been running for the past 6 months. I went to turn on wifi then turned off the screen. Later when i went to check my phone the screen would not turn on, so i performed a battery pull. After that i saw the normal google boot screen and then the custom rom boot screen. It stayed on that screen for a few seconds and then went back to the google boot screen. It then did this over and over, ive left it on for an hour once and it kept doing the same thing. Only way to stop this is with battery pull.
So what can i do with the phone:
I can access fastboot
I can access download mode
What have i tried:
I tried the following methods:
1) Flashing a Back Up
2) Wiping data, flashing a rom and gapps
3) fastboot adb http://rootzwiki.com/topic/13819-how-tovzw-return-to-factory-state-unroot-and-relock/
4) ODIN http://rootzwiki.com/topic/27050-vzwodin-files-needed-for-odin-winstructions/
The same issue continues even after successfully completing these methods. Im now down to my last strand and hoping the great xda community can help me.
seanrobot said:
Dear XDA,
I have tried all I can to fix this problem. Let me explain how it all started.
I was using my phone normally, running the same custom rom ive been running for the past 6 months. I went to turn on wifi then turned off the screen. Later when i went to check my phone the screen would not turn on, so i performed a battery pull. After that i saw the normal google boot screen and then the custom rom boot screen. It stayed on that screen for a few seconds and then went back to the google boot screen. It then did this over and over, ive left it on for an hour once and it kept doing the same thing. Only way to stop this is with battery pull.
So what can i do with the phone:
I can access fastboot
I can access download mode
What have i tried:
I tried the following methods:
1) Flashing a Back Up
2) Wiping data, flashing a rom and gapps
3) fastboot adb http://rootzwiki.com/topic/13819-how-tovzw-return-to-factory-state-unroot-and-relock/
4) ODIN http://rootzwiki.com/topic/27050-vzwodin-files-needed-for-odin-winstructions/
The same issue continues even after successfully completing these methods. Im now down to my last strand and hoping the great xda community can help me.
Click to expand...
Click to collapse
Fastboot seems the best solution to me. What exactly went wrong? Also you could try a OMAP flash.
Sent from my Galaxy Nexus using XDA Premium HD app
To be honest I have no idea what happened. It happened out of no where didn't flash a new rom or anything. OMAP flash? Never heard of it but I'll definitely look into it and try it. I've tried fastboot method and still got the same problem sadly
Really hoping this isn't a hardware issue
I just tried an OMAP Flash and still have the same problem. Ive moved on to a new phone but I still want to get this one working. Any other ideas to fix this problem?
Got into the same problem as yours. I googled around, and most people fix this problem by flashing stock image. Basically wipe your phone clean, e.g system,data,cache etc. and then flash in the stock image u downloaded from google website throught fastboot mode. I tried that method, but my phone is still stuck in bootloop. You can give it a try and see if it works

sgh-i317 wont power up past sgn2 screen without being plugged into outlet

Hi...I've searched everywhere and I haven't seen anything close to my issue. But if there is and I missed it I apologize in advance and I appreciate any help/advice.
Well I rooted my phone from 4.3 with no issues. I used safe root so it wouldnt trip knox. I flashed sokp's 4.4.2 ROM with the proper gapps and agni kernel. My issue started after I tried updating my camera with photosphere 4.3. I went to use the 3d feature and it shut my phone off and started to loop. Also flashed the camera fix zip but that didn't help either. I got into recovery using cwm and wiped everything from the cache to data, almost to the point of no service. So i flashed beanstalk 4.3 rom hoping it would solve problem but it didn't. I even did a factory reset (didnt work) and found a rooted stock ROM I flashed thru Odin then back to beanstalk, all to no avail. Now I have to keep my phone plugged into a power source in order for my phone load past "sgn2" screen. And if I unplug it then it resets phone and loops. I also noticed that with beanstalk I have no kernel(well it reads unavailable). I was thinking that maybe after the camera failed that some data or something maybe corrupted. Is there a way to wipe everything to the beginning, like fresh from at&t, so It will stop looping and I don't have to keep my phone plugged into the wall?
Also with mean bean I can uplug my phone for a few min before it resets but if I try to open any apps it resets. It seems as though my phone isn't getting enough power.
Again all help is greatly appreciated

[Q] SGH-M919 bootloop help?

Hello, I have been having issues with my SGH-M919 doing a bootloop recently. Since 2014 I have been running CyanogenMod. Overtime it has been working flawlessly. Ocassionally I would make a backup, then proceed to flash the latest nightly rom. Going from CM11, CM12, then CM12.1. Over the past month, or month and a half, I have been experiencing radio issues. The modem would fail to have a decent signal, or I would get no data, and wifi, and/or airplane mode would fail to enable or disable until reboot. Recently, I had notice a conenction issue just a few days ago, and after reboots the radio would fail to initialize. I recieved a call, and it rebooted. So fed up with radio issues I suspected a bad rom configuration. When I rebooted after backing up and flashing the CM12/1 05.14.2015 build, I got nothing but a bootloop. I tried restoring the backup but had the same result. I tried installing a previous rom build with same results. Cleared dalvid cache, and still got the same result. I ended up completely wiping the phone, all options under the wipe options under PhilZ Touch recovery. Upon reboot I was stuck in download mode. Eventually getting odin to repartition without a pit file, it failed using the only available stock rom I had available, odin failed and kies wouldnt cooperate AT ALL. I eventually found a PhilZ mirror cause the site keeps returning "invalidcust" on downloading. So I flashed the recovery and sideloaded the latest rom and got it to boot. After rebooting to install gapps, it worked, then afer setting up google play store, I had noticed I was not getting any data, and upon reboot, bootloop came back. The actual point of reboot/crash varies. Sometimes is hangs a few seconds at the samsung logo, then not even a few seconds after the bootanimation starts... it reboots. and at other times it stays around 8-10 seconds before a reboot. I suspect, faulty hardware, or I need to flash the stock rom to get the hardware to refresh properly.
Any help would be greatly appreciated.
Update:
Upon booting with USB cable connected to a power source, it boots properly. A few moments after unplugging, it reboots, then bootloops. So...Bad battery? Even though it shows it as being at like 70/80 %?
Sounds like a bum battery... Had a similar issue with a S2.
Sent from my SM-T320 using XDA Premium HD app
You need to odin full stock firmware NK2.
Then evaluate battery.
Pp.

Samsung Galaxy Tab S stuck in bootloop after flashing official ROM and factory reset.

After recovering from a previous bootloop issue with my Tab S, I'm in the same situation after flashing the official Samsung stock ROM for KitKat 4.4.2 via Odin.
When the ROM was first flashed, the tablet began working as per normal with the exception of it taking 10+ minutes to fully reboot and the device somehow restarting itself and loading the display within a second. However, after a few days, I kept receiving pop-up windows on the tablet stating that different applications (most of them I didn't have opened or running in the background at the time) weren't responding. A couple of days after that, more of said pop-up windows kept appearing on the screen, sometimes freezing the whole device until a push notification appeared in the background or the device force-rebooted itself.
I flashed the ROM again once or twice and cleared the cache partition to see if that made any difference, which it unfortunately didn't. I also removed the microSD card and SIM card, force-rebooting the device without them, and then with them when that test failed.
Now, for roughly about a week, the tablet has been stuck in a bootloop (the splash screen animation) where I have left it to drain the battery, leave it for about a day or so, and recharged it to 100%. So far there hasn't been any success.
Today I finally factory reset it to see if that may help, and the only thing that has changed is that the sound of the device rebooting is now playing when it does transition to the loading screen, which I had turned off previously when the tablet was still working.
Is there anything else that I may have missed that could help it work again? It's not rooted (and I would very much prefer to keep it that way) and has not had a custom ROM installed or flashed onto it. It can still enter Download Mode and Recovery Mode, but other than that and being about to use the Power-Volume Down technique, there's not much else I can do with it so far.
AussieMouse said:
After recovering from a previous bootloop issue with my Tab S, I'm in the same situation after flashing the official Samsung stock ROM for KitKat 4.4.2 via Odin.
When the ROM was first flashed, the tablet began working as per normal with the exception of it taking 10+ minutes to fully reboot and the device somehow restarting itself and loading the display within a second. However, after a few days, I kept receiving pop-up windows on the tablet stating that different applications (most of them I didn't have opened or running in the background at the time) weren't responding. A couple of days after that, more of said pop-up windows kept appearing on the screen, sometimes freezing the whole device until a push notification appeared in the background or the device force-rebooted itself.
I flashed the ROM again once or twice and cleared the cache partition to see if that made any difference, which it unfortunately didn't. I also removed the microSD card and SIM card, force-rebooting the device without them, and then with them when that test failed.
Now, for roughly about a week, the tablet has been stuck in a bootloop (the splash screen animation) where I have left it to drain the battery, leave it for about a day or so, and recharged it to 100%. So far there hasn't been any success.
Today I finally factory reset it to see if that may help, and the only thing that has changed is that the sound of the device rebooting is now playing when it does transition to the loading screen, which I had turned off previously when the tablet was still working.
Is there anything else that I may have missed that could help it work again? It's not rooted (and I would very much prefer to keep it that way) and has not had a custom ROM installed or flashed onto it. It can still enter Download Mode and Recovery Mode, but other than that and being about to use the Power-Volume Down technique, there's not much else I can do with it so far.
Click to expand...
Click to collapse
Factory reset, install stock firmware, wait ten minutes and you should be good.
But why kitkat? MM is available and working well.
ashyx said:
Factory reset, install stock firmware, wait ten minutes and you should be good.
But why kitkat? MM is available and working well.
Click to expand...
Click to collapse
It worked! Thank you so very much!
And I'm not a huge fan of updating my Android devices due to past experiences, but if this happens again, I might just update it to Marshmallow.
ashyx said:
Factory reset, install stock firmware, wait ten minutes and you should be good.
But why kitkat? MM is available and working well.
Click to expand...
Click to collapse
@ashyx
i love you man...this worked for me too...thank you...now i need to reinstall TWRP again and see what's cooking......
I had this problem recently too, with the added complexity that the "Factory Reset" option in recovery wasn't working -- it would say something like "MDM does not allow factory reset" and then just reboot.
Fixed it by directly flashing TWRP with heimdall, then booting into the new TWRP recovery, performing a factory reset, and then rebooting the OS. This time it got pass the bootloop.
i flashed new twrp for T700 it's bootloop cannot enter the twrp menu keep bootlooping ...what's the solution for this?please help
Help ME!
What are "stock firmware" and "MM"? and where to get it?
I've replaced the power button thinking it was a hardware issue but now I'm not sure. I've also installed a few different stock roms but still have the same problem. Does anyone have any insight as to what could be going wrong and what I can try to get it fixed? Thanks for any help you can give. The device is a Samsung SM T-800

LG G3 D855 blackscreen right after booting logo

Okay, so i have an LG G3 D855, few months ago it worked like a charm.. But then shortly after i started noticing random reboots everytime during using apps. Then it went in bootloop. I tried to turn it on again, entered recovery screen, choosed factory reset and it did, but then it went through the same process, random restart. Eventually stuck up in factory resetting screen. However i think i made mistake when the phone freezed in reset screen : pulling out the battery. later it lost its IMEI & kept heating up (probably tried to find its cellular framework of some sort).
Days passed, several factory resets has been done. Now the phone's at its worst state. It refused to get past the boot logo. everytime it finishes booting, the display just goes black, tried to plug usb charger, chargin indicator doesn't want to turn on, neither after i pulled out the battery. I have to leave it a few days to get it working again, but it keeps persisting.
Addition : The phone's also feels warm post the blackscreen.
Any thoughts whether can this be fixed or i have to replace something inside the phone's board?
thanks in advance.
Sussudioo said:
Okay, so i have an LG G3 D855, few months ago it worked like a charm.. But then shortly after i started noticing random reboots everytime during using apps. Then it went in bootloop. I tried to turn it on again, entered recovery screen, choosed factory reset and it did, but then it went through the same process, random restart. Eventually stuck up in factory resetting screen. However i think i made mistake when the phone freezed in reset screen : pulling out the battery. later it lost its IMEI & kept heating up (probably tried to find its cellular framework of some sort).
Days passed, several factory resets has been done. Now the phone's at its worst state. It refused to get past the boot logo. everytime it finishes booting, the display just goes black, tried to plug usb charger, chargin indicator doesn't want to turn on, neither after i pulled out the battery. I have to leave it a few days to get it working again, but it keeps persisting.
Addition : The phone's also feels warm post the blackscreen.
Any thoughts whether can this be fixed or i have to replace something inside the phone's board?
thanks in advance.
Click to expand...
Click to collapse
Reflash with lgup.
Remove the SIM card and the memory card. try again. Full wipe system data ...
I've had the same problem. I've tried. Worked
found the problem. memory card
EDIT: Some kind of voodoo happened right now! I was about to unbrick again and wanted to give the phone a try to boot before. And it did! So no problem at the moment, but still a strong feeling of uncertainty...
EDIT: Phone is still randomly rebooting and gets stuck in bootloops
-----
Hej guys, I really need your advice,
but first things first: Thank you very much for all of your wonderful work on custom roms and further support of older devices. I've been reading here for a few years now and was more or less happy to have up-to-date-roms for some of my phones.
Now I'm facing quite the same problem like OP did / does. Everything started with me, following this guide to root my D855 (coming from stock rom) and flash TWRP: you tube.com/watch?v=8VOgM3jLas4 (Note: The guide told me to flash "3__HacerPermisivo.zip" for updating the kernel, which I did.)
Next, I flashed a newer version of TWRP ("twrp-3.2.3-0-d855.img") than the one provided in "2__AutoRecMMD855.apk" by the guide above. I wiped dalvik and cache and after that, I flashed "lineage-15.1-20190410-nightly-d855-signed.zip", wiped dalvik and cache again and flashed "open_gapps-arm-8.1-pico-20190411.zip". I wiped dalvik and cache again and told TWRP to reboot.
Here is, where problems began to occur. The phone got into a bootloop, showing up the LG splash screen again and again instead of booting into LOS correctly and set it up. At some point I decided to remove the battery. When I did, at the same time LOS was just going to load, which I saw because of its beginning boot animation. So I screwed it up right at the wrong moment, I guess.
From here, the phone bootlooped every time, I wanted it to start. No battery acrobatics helped and on top I couldn't get it into recovery mode. Any attempts ended in bootloops. I think, this might be what is called a brick / to brick your device, isn't it? I found this guide to unbrick a D855 and followed its steps: open -freax.fr/guide-unbrick-your-lg-g3/
Believe me, it was a real pain in the ass! Because of me, messing up something or the phone getting stuck into a bootloop during the unbrick process, I had to do it 4 to 5 times until success... I have to say: I didn't follow the last steps beginning from "Root". Instead, I followed the guide from the beginning of my post.
Finally, I got "lineage-15.1-20190410-nightly-d855-signed.zip" and "open_gapps-arm-8.1-pico-20190411.zip" to run. I set it up and began to load some of my apps of my Play Store collection. While downloading, the phone froze, crashed and began to bootloop, from here unable to boot normally or to get into recovery mode. So I unbricked and flashed again (again several times because of bootloops before LOS first set up). When I got it to work again, I was able to install my apps without being trolled by the phone again. But scrolling through the eBay app froze the phone and it began bootlooping again...
You can believe me, I was about to throw the D855 against the hardest piece of wall, I could possibly find in my rage. The reason why I didn't give up at this point is, that I LOS-rommed two other D855s just a few days before. Those were my mom's and my girlfriend's and they work fine until today. I bought this third one for myself, because I was impressed, how good LOS worked on the D855s. On top I wanted to get rid of my Samsung Galaxy S4 (GT-I9515), because LOS kinda sucks on it, but this is another story...
So I figuered that the earlier LOS version I used for the women's phones, could solve the problem. So I unbricked again and flashed "lineage-15.1-20190327-nightly-d855-signed.zip" and "open_gapps-arm-8.1-pico-20190329.zip". And hell yeah, that did work! No bootloops, eBay worked fine, just everything was as I loved it on the other phones, I flashed. Until tonight. I've been lucky for almost two days, but tonight this happened: I plotted a route in Google Maps and saved it as a shortcut on my homescreen. I closed Maps and tapped the route icon. Freeze - crash - bootloop - no recovery mode! I wanted to start crying, because Maps has already worked fine yesterday. And it still does on the other two phones, which run exactly the same rom...
So now, I'm sitting here, not knowing what can be done further. I'm not a programmer / developper or any of those cracks providing us the newest software for old phones. So I just can do wild guesses. Maybe the moment I removed the battery the very first time after flashing messed something up very deep inside the phones internals and it can not be cured any more. Maybe some of you guys have experienced similar things and know a tweak or a simple step, I forgot. Anyway, I hope I can use my phone on LOS some day which I bought especially for this case.
Keep up the great work, folks!
Greets
I ordered a new mainboard. It should arrive within 3 weeks. I'll keep you updated.

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