Cannot get past bootloops - Samsung Galaxy J7 Questions & Answers

So, I'm in a very bad situation.
The phone (SM-G611F) does not want to boot without root for some reason.
I have to root in order to boot.
The problem is when I flash TWRP, I get the "only official blah blah can be flashed)
I'd have to enable OEM unlocking to get past that.
The problem is I cannot boot because to boot I need root.
It just restarts after showing J7 Prime2 logo, before the animated Samsung logo comes in. It never appears, LED status bar never blinks or lits up.
I already tried formatting and erasing cache.
I think this is a very bad dead end, are there any way that this can be fixed?
Remember, I have stock ROM fully flashed, and cannot flash anything else than that.

Come on, how do I deal with this?

Related

Stuck on boot loop

This is me story, flashed a OTA to my cel and all the sudden my phone reboots loads up to the Oneplus logo and then nothing... Boot loop, so trying not to worry that much, noticed I could still boot to fastboot, I tried flashing CM11 praying that would get my phone back... Boot loop, Flashed CM12 and I got a low battery message boot loop, then going back to fastboot just got me a qualcomm brick, used the Color Os fix... Yay no more qualcomm brick but phone stuck on red icon, does someone have a clue what happened to my phone or if I would ever get it back to normal? :crying:
How long did you let the phone sit for (wait) and you assume it's stuck? As I know if you use the Qualcomm downloader will flash back to ColorOS and it will wipe everything automatically and your phone should be able to boot normally.(Last time when I revive my OPO if I remember correctly it will show the red 1+ logo for at least 30-45 sec.
It just sits there waited for a couple minutes, all the flashing goes ok, even with CM12S the flasing seems to be good, but it just boot loops, and the other thing when I flash a recovery it does flash it, but I cant make it boot to recovery what so ever... I just hope and pray there is a way to recover my phone since it would be a shame if someone told me, you have to buy a new motherboard... hopefully someone would just say replace the battery XD, because when I flash CM12s it does say the battery is too low to power and it keeps power cycling

[SOLVED] Stuck after Factory Reset

Hello,
I bought a new device and therefore wanted to factory-resent my Nexus 5 to give it to my wife.
I did it from within Android and then it restarted and stayed in the "Erasing..." screen for quite a while, then showed the dead robot with the "!" triangle sign, then rebooted and started "Erasing..." again, with apparently no way out.
I had unlocked bootloader and TWRP, but also booting the recovery went back into "Erasing..." mode.
I then tried to boot from an external TWRP iso image with fastboot from the PC. TWRP seemed to load, then started doing a bunch of things like formatting "something" (was too quick to read) and suddenly in a matter of second it was back to the robot but now without the "Erasing..." label anymore and now it's stuck there.
No idea what happened and how to fix and now I'm somewhat scared of trying something else.
Any idea?
Never mind... Flashed ALL stock images from fastboot (just userdata and cache didn't work) and it rebooted.
No idea what the problem was.

Bootloop at Samsung logo

My S7 has suddenly rebooted and now it won't go pass Samsung logo. At the first few reboots I was able to see PIN unlock screen where it would eventually freeze and automatically reboot, but now as I removed SIM and microSD it will only boot to Samsung logo in best case.
I have tried to enter recovery mode, but it freezes after 7 seconds at initial screen stating "updating system files". I can only successfully enter download mode.
What should I do? The warranty is not valid anymore, could I flash it with odin? Is there any way to recover data from internal memory? Please help.
krneki10 said:
My S7 has suddenly rebooted and now it won't go pass Samsung logo. At the first few reboots I was able to see PIN unlock screen where it would eventually freeze and automatically reboot, but now as I removed SIM and microSD it will only boot to Samsung logo in best case.
I have tried to enter recovery mode, but it freezes after 7 seconds at initial screen stating "updating system files". I can only successfully enter download mode.
What should I do? The warranty is not valid anymore, could I flash it with odin? Is there any way to recover data from internal memory? Please help.
Click to expand...
Click to collapse
Hey, same problem here !
I have, in addition of all that, the famous "Black screen & blue led" issue when i try to boot up my S7.
But my phone keep freezing when he try to boot. Keep freezing and rebooting 30 seconds after i unlock the screen with the pin (when he can boot), and for the recovery, it works for me, but only once in ten ...
Every times he freeze at the boot, i must wait when the battery hae 0% and shut down automatically
i already tried to wipe cache, but the situation doesn't change anymore.
i don't know too how to recover the internal storage data ...
If someone can help us .. :fingers-crossed:
(For me, my phone is entirely stock, and never flashed)

Phone won't complete after stock flash

My father-in-law's S6 was rebooting right after the menu screen came up. After trying numerous things which wouldn't work (still had varying boot loops) like getting into the recovery mode and doing a factory wipe, I decided to use Odin and flash the base stock Android nougat on this (it had the one verizon security patch after that, so should be no issue doing this).
That went okay and it rebooted and got all the way to "Android is starting" which you see after a firmware upgrade. But I didn't realize the battery had run down through all this so it died at this stage. So it was taking a charge now, so let it charge overnight and give it another run.
Got up today, tried to start it...back to the boot loop. So I figured I'd flash stock again with Odin (can always get back to that mode).
It completes successfully and then after the reboot at about 32% jumps to "erasing" and then the boot loop again.
Got into recovery mode once and wiped cache (pointless at this point, but whatever) and did factory reset there, then boot to bootloader. Got all the way to the verizon screen...and then boot loop again.
Is this phone just done? The only thing I can consistently get to is Odin mode. I tried the stock reflash a couple more times and keep ending up in a boot loop and it doesn't even get past the "custom" screen now. And I can't even actually get it to shutdown for that matter. I can get to the battery pull mode but if I try to power off from there, I just get the black screen with the blue light.
And, to make matters even worse, now on restart, it brings up the blue system update screen for a second, then jumps over to the no command screen, sits there for a second, then reboots again. I think I've somehow managed to even blow the recovery menu but this has all been stock and never had any custom firmware or root.
Any help/suggestions would be greatly appreciated!

J700F Black Screen

Hello, what could be the cause of the black screen? I can manage to boot it up to recovery mode(TWRP) but after a few seconds it goes into black screen. Same goes after seeing the samsung logo. I can't seem to boot into odin mode as I tried multiple times it only shows the samsung logo and then boots into samsung logo again. I also tried connecting it into the computer but the device won't show up even though I unlocked the oem. When charging it shows the battery indicator fine. It shows error on the upper left: Custom Binary blocked by frp lock. what can I possibly do to make it work again? Thanks! It's on custom rom: onkiller-os v2.0 final and custom recovery: twrp 3.4.0.
The oem Unlocking gets enabled sometimes if your battery runs out.
try flashing the stock rom again, it can help sometimes. it happened once to me as well. My phone died once bcuz the battery ran out and somehow oem unlocking got reenabled
Ahmed9193 said:
The oem Unlocking gets enabled sometimes if your battery runs out.
try flashing the stock rom again, it can help sometimes. it happened once to me as well. My phone died once bcuz the battery ran out and somehow oem unlocking got reenabled
Click to expand...
Click to collapse
Thanks for the reply. ah, But the oem is enabled and can I flash the stock rom without accessing odin mode? I can't seem to boot into it.
Boot into download mode, by pressing power, home and volume down button
Try that

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