BootLoop? Samsung Galaxy Core Prime SM-S820L - Samsung Galaxy Core Prime Questions & Answers

I don't know what happened to my phone. From what I've read, I think its boot loop? I had recently edited my build.prop file. However, I found this was completely unnecessary and was going to overwrite the build.prop file with one that I had backed up to a micro sd card previously. After I did this, I was stuck on the screen(see image). I tried using android recovery mode. I tried "wipe cache partition" and wipe data/factory reset. Afterwards, I tried to reboot from recovery mode, and I saw the word error and the screen was stuck again. I've removed the battery and nothing works. Is something like adb the solution and if so, can someone link me a guide that's really noob friendly. My phone is rooted and this happened after I overwrite the build.prop file and restarted the phone. I have never flashed a rom. Thx in advance.
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Similare problem here
I have a similar problem, but a little different...
Rooted the phone and then tried to flash TWRP using their official app., It stated that everything was successful and asked if I wanted to reboot into recovery. I tapped yes so I could make my first backup., Now the phone starts and shows the logo in your image then goes to a blank screen and thats it... Cant boot into recovery or bootloader or anything...
Any advice out there, or do I now won a brick?

I also have this problem and I can not do anything, neither recovery nor odin ...

Related

after tinkering with system tuner, phone stuck in boot

I am almost a complete noob but want to learn everything i can to really "own" my phone. Im on an SPH-L720 4.4.2 and had root with [CF-Auto-Root-jfltespr-jfltespr-sphl720.tar.md5] (i think) though it might have been CF-Auto-Root. Everything was fine until I screwed around with some settings in SystemTuner . Now the phone is stuck in boot loop and sticks at the yellow Sprint screen. I've been able to flash back to stock ROM i think, and keep getting the PASS in Odin but keeps sticking at boot. I must have somehow got to TWRP 2.8.4.0 cause I'm going through that but really dont know what to do. Still can't use phone. Any help is seriously needed.
mebert518 said:
I am almost a complete noob but want to learn everything i can to really "own" my phone. Im on an SPH-L720 4.4.2 and had root with [CF-Auto-Root-jfltespr-jfltespr-sphl720.tar.md5] (i think) though it might have been CF-Auto-Root. Everything was fine until I screwed around with some settings in SystemTuner . Now the phone is stuck in boot loop and sticks at the yellow Sprint screen. I've been able to flash back to stock ROM i think, and keep getting the PASS in Odin but keeps sticking at boot. I must have somehow got to TWRP 2.8.4.0 cause I'm going through that but really dont know what to do. Still can't use phone. Any help is seriously needed.
Click to expand...
Click to collapse
Just flash a ROM in TWRP, also wipe data, system, cache, and dalvik cache.
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Want to unroot, need help please

Hi,
I'm new to android and recently rooted my Galaxy S7 Edge AT&T Snapdragon and now I want to unroot and return to stock but I'm having trouble.
To begin, I can't access recovery mode anymore. I get a message in the top left corner of the screen that says something about "custom rom blocked". I tried to follow instructions I found on XDA on how to unroot and return to stock. I downloaded the files and used Odin to flash it, it begins to do something and then gives me an error.
What am I doing wrong or how do I fix it? I apologize if I'm not explaining this the greatest, like I said I'm new to this and don't understand it much. All I want to do is wipe the root and return to stock. All help is greatly appreciated!
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If Your phone works then try this ^
If Your phone is dead then post the log from Odin.
Thanks for the help! I tried it multiple times and it says each time "uninstallation failed". Could it be the issue I'm having with the recovery image?
Iamtriple717 said:
Thanks for the help! I tried it multiple times and it says each time "uninstallation failed". Could it be the issue I'm having with the recovery image?
Click to expand...
Click to collapse
I don't think so, but I guess that the best thing You can do right now is to just reflash the whole phone with Odin, but since You get errors in Odin I need to see the log.
I successfully unrooted last night using these instructions and the files provided. I don't know if it'll work for you though.
Instructions: https://stockromupdate.com/how-to-flash-stock-rom-samsung-smartphone/
Files: https://stockromupdate.com/2016/08/...galaxy-s7-edge-sm-g935fd-6-0-1-g935fxxu1apgf/
Note: Make sure you ignore the Home_CSC file AND the Pit tab in Odin. Never touch "Pit" unless you know what you're doing. And also note that the ROM provided might not be the one developed for your country, but it should work fine.

P8 lite bootloop and locked, can't do anything, help!

So, let's start from the beginning. The phone was working perfectly, and it wasn't rooted but I had the brilliant idea to manually upgrade to android 6.
The version was ALE-L21C432B207 (or very close to that) and I was trying to follow the guide in " Chapter 6: Upgrading to Marshmallow" from the MEGA-THREAD in order to update to the b560 version (dual sim).
Well, the update started, and first it started with the update of EMUI which completed succesfully, but after that it restarted and stuck at the HUAWEI logo screen. From there I can do everything that you see on the photos, but nothing manages to do the job. Neither e-recovery (failure, though it connects to wifi) nor by pressing both volume up and down buttons (update.app is still on the dload folder of internal storage I guess but does not finish the upgrade, it stops at 5%).
So I can do nothing now. My phone is not recognized in HiSuite, so I am not sure if I can do anything with fastboot. Tried everything even the menu that says factory reset (doesn't continue) and wipe cache (nothing changed after that). I don't know if maybe I should unlock the bootloader but how can I do that? I have no number available now (serial, imei etc) and also I have to wait 14 days?
Please help me, I'm desperate...
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update
Ok, the fix was simple. I did a manual upgrade with an sd card to a newer version (B616). It installed with no problems.

Followed Stock ROM guide, made some progress, now stuck at Android Recovery

Hello,
I followed the guide at http://https://forum.xda-developers.com/moto-g4-plus/how-to/stock-rom-npjs25-93-14-4-march-1-t3608138.
I went from having TWRP installed and just having blinking white LED to now booting into Android recovery screen (shown here)
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Now that I'm at the Android Recovery screen, someone mentioned I should just be able to hit wipe data/factory reset option and it should boot me into the OS. However, what actually happens is the unit reboots, shows the motorola sign, buzzes, goes black, shows the motorola sign again, goes black, then boots back into Android recovery screen shown.
I'm not sure how to continue troubleshooting.
The one thing that stuck out to me is it said "Flash signed images after reboot if needed"
Is that what I'm missing? If so, what does that entail?
Any help is much appreciated. Concerned I may have fully bricked the phone.
Thanks from your frustrated friend,
Connor J.
P.s. Model # is XT1625-SS
I realized I forgot to add the model number which is XT1625-SS.
I've bought another moto g4 in the meantime that I'm using.
I originally went wrong by installing the SuperSU in a link from a youtube video that was a link to an older version of SuperSU.
So I know I messed up there.
But I'd like to know if there's a way to remedy it because other than my failed tinkering the hardware on the phone is perfectly ok.

Fire HD 8 (8th) Can't flash rom, can't factory reset.

Hello, about 4 days ago my device rebooted for no reasons and got stuck in the "fire" loading logo.
First i tried factory reset, it almost worked, could see the orange screen, but i couldn't get past the wifi configuration part, it continued to reboot. After some factory resets the tablet got stuck in the "fire" loading logo. I tried then the adb sideload solution, but it didn't worked either, the sideload stopped in some point (28%, 10%...). Finally i tried rooting my device with this thread https://forum.xda-developers.com/hd...fire-hd-8-2018-downgrade-unlock-root-t3894256 , i used a virtual machine for ubunto, did everything right, installed TWRP, but i couldn't flash the 6300.zip file, i got "can't mount \system "error, i tried random things to solve this(formatted data) , but even without this error the rom won't flash, i got error 7 all the time, tried sideloading the rom, as result my device just rebooted without TWRP(just stay rebooting int the amazon logo , although i can install TWRP anytime using the root metod ).
Can someone help me?
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*On my last try some blue lines appeared.
*Update:
I tried to flash the system image from the fastboot, i got a glimpse of the "FIRE" logo, under it was " erasing", maybe that will work? I'm trying now to use "fastboot update 6300.zip" but it says :
archive does not contain 'android-info.txt'
fastboot: error: could not read android-info.txt
Click to expand...
Click to collapse
maybe i can just create the android-info.txt file?

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