How to fix bootloop (can't boot into recovery or system)? - Samsung Galaxy S7 Questions and Answers

My Galaxy S7 (SM-G930R4) has decided to not want to boot. I can't boot normally or into recovery. I can only boot into Odin mode.
I've tried to flash stock rom, but it doesn't seem to work. I've heard that I should use the ROM from samsmobile, so I'll try that next.
This all started to happen after I accidentally turned on the phone right before I took the battery out. I put that battery back in and it booted fine, but after a few minutes it rebooted and started to reboot over and over again. It won't even show the charging screen when it is turned off and plugged in.

OK, I tried to flash the stock rom with Odin, but it still is in a boot loop. I've flashed it 3 times. I've firmware files from different sites. It seems that this S7 is dead. Please help!

Try to flash another rom and keep in mind that it sometimes takes up to 10-15 minutes at the first boot.
You could also just flash TWRP...

ATP-Flo said:
Try to flash another rom and keep in mind that it sometimes takes up to 10-15 minutes at the first boot.
You could also just flash TWRP...
Click to expand...
Click to collapse
TWRP for the Samsung Galaxy S7 (SM-G930R4)???
Also, now I've been greeted with the screen that says "An error has occurred while updating the device software." It says to use the Samsung Smart Switch PC software to fix it. Hopefully that works.

Where are you?
What firmware are you using? Branded or unbranded?
Have you looked on Sammobile for the correct firmware?
Are you able to boot into system recovery? Home+VOLUME UP+Power (Not Download)?

Oh you have got the G930R4. I thought G930F.
Then I don't know if there is a TWRP you could flash.
But if there is one you could just flash it and enter recovery mode and install a new ROM from within the TWRP environment.
Check this out.
https://dl.twrp.me/herolte/
Sounds like your device is currently bricked anyways, so just give it a try.
Maybe you can get a working TWRP recovery mode again.
Also check these links:
http://www.techzai.com/root-galaxy-s7-s7-edge-android-8-0/
and
https://twrp.me/samsung/samsunggalaxys7.html

cooltt said:
Where are you?
What firmware are you using? Branded or unbranded?
Have you looked on Sammobile for the correct firmware?
Are you able to boot into system recovery? Home+VOLUME UP+Power (Not Download)?
Click to expand...
Click to collapse
I am in the US.
I'm on Android 8.0 (Oreo)
I have a US Cellular Branded phone.
As soon as the phone is turned on, it tries to boot into recovery, but it can't so it keeps on trying over and over again. I've tried the firmware from SamMobile, but nothing seems to work.
When I flash to Stock ROM, and I turn the phone on, it stays in a bootloop of the "Recovery Booting..." screen.
When I flash the rooted Engineering rom, and I turn the phone on, it stays in a bootloop of the Samsung S7 logo. I can't boot into safe mode.
I tried to use Samsung Kies... didn't work... I tried to use Samsung Smart Switch... didn't work... I've tried 3 or 4 different ROMs from different websites.... didn't work.

i have the same problem. was able to enter download mode several times, but at some point it died completely (not charging anymore). how do you manage to take the battery out? does the SM-G930R4 the possibility to easily remove it?

Cloud2F said:
i have the same problem. was able to enter download mode several times, but at some point it died completely (not charging anymore). how do you manage to take the battery out? does the SM-G930R4 the possibility to easily remove it?
Click to expand...
Click to collapse
The glass panel on the back is glued onto the phone. If you remove the glass, there are screws and from there, it's easy. I broke the glass in the process... so yay me.
Mine won't charge either. It is completely dead, but it will still turn on when I plug it into my computer.

Really strange. Mine is not turning on, even tried several locations, charger, etc. Once I had download mode while having a black screen. Keep an eye on odin and instantly flash firmware if it got recognized. I press all three buttons while plugging in; that's how it worked the first time for me....

Related

P5110 stuck in bootloop when reverting to stock

Hi There,
Sorry misleading title, it's a P5100 (wifi+3G tab)
I know this has been asked many times on these forums, but I couldn't find anything to help.
Following this guide: http://forum.xda-developers.com/show....php?t=1722745
I tried to restore the P5100 to stock from CM (This is the firmware I downloadad: http://samsung-updates.com/details/1...100UBDMD2.html)
Now my device is stuck in charging boot loop. I can enter stock download mode via holding up and power on boot (however Odin 3.07 fails at the "setupConnection" and Odin 1.85 fails at Can't open the specified file. (Line: 1876)) I tried this on several computers.
I am able to turn the device of when it's plugged in to power, it then goes to the battery charging screen and if I take out the power the device remains off.
I cannot enter stock recovery, maybe I am doing something wrong, but when holding the down volume and tapping the power button the device simply boots.
Any help appreicated
Think you have same issue as me. I can get to download mode but not recovery, only difference is I can flash the firmware with no errors but tablet still wont boot always stuck on samsung logo and will not go to recovery either.
Have you tried a different usb cable, I also got that message few times I just rebooted it back to download mode and it fixed up after that. Good luck.
No luck
I have managed to use odin and flash a different stock firmware. Now the device simply gets stuck on the Samsung Logo on boot. How'd you fix this?
I have already tried all cwm recoveries some bootloaders and different stock firmwares. I think the chip that holds the firmware might be faulty and doesnt let the device boot up.
Anyone had same issue that can help us get a solution to this problem or at least an explanation of whats going on would be highly apreciated.

[Q] no battery pull precludes recovery

I tried to use chainroot, and got stuck on the logo screen. normally you'd battery pull, go to recovery and wipe data. but i can't find any way to shut down the phone, before doing power-upVol-home.
And now i've tried to odin a stock recovery to undo chainroot, odin fails. could re-run odin with auto-reboot off, but again, no way to shut off and go to recovery.
at this point i'm stuck with the blue screen asking me to use smart switch on PC to do emergency recovery. but smartswitch says the device is not recognized.
thoughts? thanks!
I was stuck rooting on the boot logo too. Had to use odin 3.10 and did "run as administrator". Also if this helps to reboot the stuck phone press vol down+power together until the screen blanks out. If you need to get into download mode, as soon as the screen blanks out, press and hold the Home button ( Don't let go of the vol down and power though ).
Good grief.... the non-removable battery has made these recovery tricks so difficult
thanks twisted_mind. at this point, i only get the blue screen asking me to do smartswitch recovery, and the one thing i CAN seem to do is volDown-power-home and it easily goes to download mode. i have not been able to get to recovery mode no matter what i do (including volUp-power-home, even before this smartswitch message came up after i tried to odin a stock recovery).
so i can still go to dload mode, and stick in a stock rom. the ones i've tried are from sammobile, and a potential issue is that i don't know the exact one to pick (this phone is a demo here in europe and i didn't note the details under settings when it was working). so the ones i try end in an odin FAIL. again, i've also tried odin unchecking auto-reboot, but then the phone is stuck at the very end of dload ("don't turn off target", etc), and i have no way to battery pull, etc.
Instead of holding power to shut off you have to hold power and vol down
jasonastley said:
I tried to use chainroot, and got stuck on the logo screen. normally you'd battery pull, go to recovery and wipe data. but i can't find any way to shut down the phone, before doing power-upVol-home.
And now i've tried to odin a stock recovery to undo chainroot, odin fails. could re-run odin with auto-reboot off, but again, no way to shut off and go to recovery.
at this point i'm stuck with the blue screen asking me to use smart switch on PC to do emergency recovery. but smartswitch says the device is not recognized.
thoughts? thanks!
Click to expand...
Click to collapse
Hello
I'm stucked on the same corner, i used Chainroot with odin 3.10.6 with no luck, just as what
happened with you, my S6 international module stucked on logo screen.
where did you get S6 stock recovery from?
Thanks
ktetreault14 said:
Instead of holding power to shut off you have to hold power and vol down
Click to expand...
Click to collapse
I have the turquoise screen that says "an error has occurred... use the emergency recovery function in smart switch...". if i do power + volDown there OR when the phone is stuck in download mode after the odin fail, the phone turns off but then comes right back on with the turquoise error screen. i've tried quickly going to the recovery key combo right when or right after the screen goes dark, but to no avail.
I can easily do power +volDown + home and go to dload mode. i just can't get into recovery mode no matter what i've tried so far.
if i could just find a stock rom that wouldn't fail in odin, or something else to use as AP/PDA in odin, i'd be set i think. wish i knew how to do this. hitting nand erase all in odin doesn't do the trick by the way.
ammsamm said:
Hello
I'm stucked on the same corner, i used Chainroot with odin 3.10.6 with no luck, just as what
happened with you, my S6 international module stucked on logo screen.
where did you get S6 stock recovery from?
Thanks
Click to expand...
Click to collapse
got the stock rom from the sammobile site. but a problem is that they have many rom's listed for the G925F and i am not certain which variety i have, or if that matters: http://www.sammobile.com/firmwares/database/SM-G925F/
jasonastley said:
got the stock rom from the sammobile site. but a problem is that they have many rom's listed for the G925F and i am not certain which variety i have, or if that matters
Click to expand...
Click to collapse
I managed to root my G920F after "odin flashing" the UK version from Sammobile, release date 11-4-2015,
Then i flashed back the CF-Auto-Root.
Know my device is booting fine and rooted
ammsamm said:
I managed to root my G920F after "odin flashing" the UK version from Sammobile, release date 11-4-2015,
Then i flashed back the CF-Auto-Root.
Know my device is booting fine and rooted
Click to expand...
Click to collapse
is the version you flashed the same version that you had prior (do the apps look the same, etc)?
so odin passed? (mine FAILs, with 4 different sammobile stock recoveries). I have the S6 Edge, maybe the S6 works fine and I just need the correct S6 Edge firmware.
jasonastley said:
is the version you flashed the same version that you had prior (do the apps look the same, etc)?
so odin passed? (mine FAILs, with 4 different sammobile stock recoveries). I have the S6 Edge, maybe the S6 works fine and I just need the correct S6 Edge firmware.
Click to expand...
Click to collapse
No its not the same version, mine was G920FZDAXSG and i flashed G920FXXU1AOCV, its a UK version, some Version
store apps was pre installed in the rom nothing more.
Odin passed normally with no issue.
i used two identical Odin v3.10.6 versions the second one i used is the one i flashed the rom and the root with.
Download the odin from this link:
samsungodindownload. com
ammsamm said:
No its not the same version, mine was G920FZDAXSG and i flashed G920FXXU1AOCV, its a UK version, some Version
store apps was pre installed in the rom nothing more.
Odin passed normally with no issue.
i used two identical Odin v3.10.6 versions the second one i used is the one i flashed the rom and the root with.
Download the odin from this link:
samsungodindownload. com
Click to expand...
Click to collapse
umm, hey ammsamm, i went to the link you just mentioned, installed it and GOT SOME NASTY SPAMWARE INSTALLED on my machine from it. I'd normally flag you immediately as a bad user, but your other comments sound legit. do you have anything to say about this?
jasonastley said:
umm, hey ammsamm, i went to the link you just mentioned, installed it and GOT SOME NASTY SPAMWARE INSTALLED on my machine from it. I'd normally flag you immediately as a bad user, but your other comments sound legit. do you have anything to say about this?
Click to expand...
Click to collapse
Actually this is not the link i downloaded the odin from i tried to
Atthach the one i have but faced with the upload limit, even
After ziping and spilting the the odin, upload failed,
So, you better find another odin 3.10.6 a version with all the buttons
are enabled.

Need serious expert help here...

My VZW rooted 4.4.4 GS5 decided to shut off, and reboot into recovery. Had TWRP with SS installed about 3 weeks ago, and all was working EXCELLENT, without any problems. I've been using this thing rooted and debloated for about 2 or more years. I have never tried to install any other custom ROMs. All I did was debloat the VZW crap off of it. I tried SS in the past, but it did not seem to do anything, so I uninstalled it, so I thought.
It appears as though through recovery, that it has been wiped.
The ROM installed was the 4.4.4, which all I wanted to do was debloat a couple years ago, which I did. Now the phone seems to have taken a crap, and I can't seem to get it to do anything. There is probably about 70% battery to play with. I can get it booted to recovery, but nothing else. I attempted to sideload the 4.4.4 firmware, but was unsuccessful. Maybe I don't know what I am doing. When I originally rooted, I used Odin to downgrade to 4.4.4, per instructions I found. But now, I don't know what to do.
Can someone please hold my hand here, and PM or email me so I can get this phone up and running again? This is both my personal and business phone. Please PM me, or email to [email protected]
Thank you.
Can you get into Download mode? If so, from there you should be able to Odin flash firmware located at sammobile's site.
Beeko said:
Can you get into Download mode? If so, from there you should be able to Odin flash firmware located at sammobile's site.
Click to expand...
Click to collapse
It will boot to Recovery mode, and give me the options to install via ADB, from external, etc. Not sure if I know exactly what you are meaning by d/l mode.
It obviously does not boot normally.
When it boots to recovery, my options are reboot system, apply update from 1. ADB, 2. External, 3. Cache, or the two wipe options.
That is as far as it will go now.
Just put batt back in, connected USB cord from PC and tried to boot. Up top, in red Secure Fail: Recovery. Then a msg on the screen. System software not authorized by VZW has been found on your phone. Please turn off and go to a VZW store for help.
When it does turn on, it goes to the Samsung screen and says Custom, with the unlocked padlock. It has displayed that since the day I rooted, back about two years ago, but has always booted through.
Now it is going back to Recovery, and gives me those 5 previous options for installing / recovery. But that's where I am stuck, and need a little (a lot) of expertise and guidance.
Pull battery, put battery back in , then hold power, volume down and home at same time. If it boots to download mode then use Odin
johnnycooper said:
Pull battery, put battery back in , then hold power, volume down and home at same time. If it boots to download mode then use Odin
Click to expand...
Click to collapse
I don't think it boots to d/l mode. It boots to Recovery, then gives me the options that I previously listed; ABD, External, or cache. I don't believe that ADB is d/l mode, is it?
johnnycooper said:
Pull battery, put battery back in , then hold power, volume down and home at same time. If it boots to download mode then use Odin
Click to expand...
Click to collapse
It only boots to recovery.
You tried to boot to download mode with battery pulled - volume down, power, home button?
johnnycooper said:
Pull battery, put battery back in , then hold power, volume down and home at same time. If it boots to download mode then use Odin
Click to expand...
Click to collapse
johnnycooper said:
You tried to boot to download mode with battery pulled - volume down, power, home button?
Click to expand...
Click to collapse
Okay, now it seems like I 'might' be getting somewhere. Yes, now the battery is OUT, and it did boot to ODIN, and I think it might be doing something. See?, need the hand holding. Will update, in a bit to see if this works. Thank you!
The phone says it's d/l, but there doesn't seem to be much happening on the ODIN screen.
You have to have usb hooked to pc , open Odin on pc. Then press up on phone then load factory tar to Odin
---------- Post added at 10:36 PM ---------- Previous post was at 10:33 PM ----------
Go here and read the part that days prepare your phone after #9
http://forum.xda-developers.com/showthread.php?t=3290370
Working Root Method For 5.0 Lollipop Roms [OE1] [OG5] [OK3] [PB1] [3-3-16]
Okay, it went through what appeared to be an install, then it showed that it was upgrading, through 145, did a reboot, but now all it is doing is turning on and off, showing the GS5 screen with the Custom padlock logo.
Pull battery , boot to recovery, wipe cache. If that dont work, start over
boblpn said:
Okay, it went through what appeared to be an install, then it showed that it was upgrading, through 145, did a reboot, but now all it is doing is turning on and off, showing the GS5 screen with the Custom padlock logo.
Click to expand...
Click to collapse
It prepared the phone, rebooted, showed the red VZW screen, and now seems to be stuck in a boot loop. I have done a battery pull, and rebooted, but still stuck in a loop.
Should I try installing a different ROM? If yes, which one? Can you provide a link?
boblpn said:
Should I try installing a different ROM? If yes, which one? Can you provide a link?
Click to expand...
Click to collapse
Already did, it's in the link
question..What if he ONLY wants to go back to his KK 4.4...all he has to do is ODIN the NCG, towelroot, install SuperSU and then flash the 4.4 and he'll be back...what is being offered may not be what he wants and then may not go back to KK if he so desires...you got to give and explain to users what will happen if done...
If you can get to DL mode, Run Odin as admin on your PC and then load up whatever stock firmware you want from HERE.
He can use this thread here which could be helpful as well. http://forum.xda-developers.com/showthread.php?p=53447942#post53447942
boblpn said:
The phone says it's d/l, but there doesn't seem to be much happening on the ODIN screen.
Click to expand...
Click to collapse
It won't download anything unless you push it using Odin. Boot into recovery and give me the build number at the top. Then we can find the factory firmware to push with Odin in download mode.

G955FD Softbricked. OEM Unlock is Disabled.

Help Help Help :
Can I get some help? I bricked my phone because I was trying to install twrp. It flashed but I got TWRP cant install.Because. OEM locked.
It flashed. Great. But now IT STILL DOESNT BOOT. I'm stuck at NO COMMAND, it keeps restarting after 20-30 seconds of showing no command. and it's looping all over.*
i flashed stock firmware.It is flashed.Then reboot.Then install system update.Then Erasing.Then rebooting.Then NO COMMAND.Then reboot itselve recovery mode.Then i wiped factoory and cache.Then press rwboot to system.Then Samsung Galaxy S8 Plus.Then install system update.Erasing.No Command. etc. Keeps rebooting. its on NO command screen. It just restarts. Doesnt boot. I want to enable OEM Unlock. I installed combination binary. But not appear in Developer Mode.
i flash atock with Kies emergency.I flash different stock firmware from updato.com. But nothing happend.
I'm a little confused.
What state is your phone currently in, i.e. can you get into download mode, turn off... what?
JeffDC said:
I'm a little confused.
What state is your phone currently in, i.e. can you get into download mode, turn off... what?
Click to expand...
Click to collapse
KIES says that. (THR) Stock. i downloaded it and flashed with Odin. Then reboot. Then system install update. Then Erasing. Then reboot and No Command! 30 seconds keeps rebooting itself 30 seconds interval Random.
I did factory format, cache clear. then the same problem. i want to install twrp recovery with oden. It says Oem Lock. Not allowed. But i flashed Combinary file. I can get into system and i to developer mode but dosnt seem OEM UNLOCK that ll do enable it.
Ok mate, but if you press Vol- + Bixby + power for couple of seconds, can you access to download mode? If you can, I think you'll have to install the firmware all over again.
Try flashing using latest firmware from sammobile. Use Odin to flash all the files contained in firmware download. Make sure you get latest firmware for your carrier. Google how to flash using Odin. Hope this gets you in the right direction. Good luck finding what u need, do copious amounts of research before attempting any rooting of devices and if all steps aren't clear as day to you then do not attempt it unless you don't mind buying multiple expensive phones to tinker with.
Did OP find a fix to this problem?
I am experiencing a similar issue. Picked my phone up to find had randomly gone into a boot loop. Tried soft reset, cache wipe, factory reset - all successful but the phone would still reboot and be stuck on device model screen. Next I decided to flash the device with stock firmware. The flash passed in Odin, the phone then rebooted, loaded to device model screen, then a screen appeared saying "installing updates" which would make it to 25% then crash. After this the phone keeps booting, shows a screen with a dead android icon and says "no command" or "error". I have tried to flash the device using Oreo and Nougat firmware but have failed every time (although the flash did pass in Odin)
Any help would be greatly appreciated as I would rather not buy a new phone due to a random hardware fault which is out of my control.
southsideswaggar said:
Try flashing using latest firmware from sammobile. Use Odin to flash all the files contained in firmware download. Make sure you get latest firmware for your carrier. Google how to flash using Odin. Hope this gets you in the right direction. Good luck finding what u need, do copious amounts of research before attempting any rooting of devices and if all steps aren't clear as day to you then do not attempt it unless you don't mind buying multiple expensive phones to tinker with.
Click to expand...
Click to collapse
This is perfect if you have soft bricked your phone!
follow this video maybe it help you
https://forum.xda-developers.com/ga...g-aqg5-fix-t3636857/post73032395#post73032395
https://www.youtube.com/watch?v=VTi3uBkpJic&t=155s

SM-J120G screen blacks out while flashing stock firmware

Hello, my phone was rooted with Magisk for about a year now. Today, the battery died while I was watching a video on youtube, and the phone shut down. When I tried to charge it, the screen woke up with red text on top saying "Custom binary blocked by FRP lock" and it kept showing this in a loop. The screen wakes up with the text, and blacks out. then again wakes up.
I tried Googling, and the solution I saw everywhere was to flash the stock firmware. I had done this once before, so
I downloaded ODIN, and then firmware from here (https://updato.com/download-samsung.../sl/sm-j120g/06975F2714E911E7963AFA163EE8F90B).
It was one .md5 file, so I put it in the AP slot and started.
Halfway through, the phone's screen blacked out and quickly came back in, but Odin said the process Failed, and the phone showed the following message.
"An error has occurred while updating the device software. Use the Emergency recovery function in the Smart Switch PC software"
Click to expand...
Click to collapse
Now, it is stuck on the above message. It is not like the normal download mode, but I can still flash the firmware through Odin. But always, halfway through, it gives the same error. The screen blackens, then quickly wakes up (takes like one second). Also, the phone doesn't seem to be charging, as when I disconnect it from the PC, it turns off completely.
My guess is, as the phone doesn't charge, it is an issue with the battery being dead.
I tried the smart switch app, but it doesn't recognize the phone.
The device is Samsung Galaxy J1 (2016) SM-J120G.
It has TWRP installed, but I can't access it now.
Rooted with Magisk.
Please help, I am a complete noob on this subject.
ChathinduN said:
Spoiler: yep
Hello, my phone was rooted with Magisk for about a year now. Today, the battery died while I was watching a video on youtube, and the phone shut down. When I tried to charge it, the screen woke up with red text on top saying "Custom binary blocked by FRP lock" and it kept showing this in a loop. The screen wakes up with the text, and blacks out. then again wakes up.
I tried Googling, and the solution I saw everywhere was to flash the stock firmware. I had done this once before, so
I downloaded ODIN, and then firmware from here (https://updato.com/download-samsung.../sl/sm-j120g/06975F2714E911E7963AFA163EE8F90B).
It was one .md5 file, so I put it in the AP slot and started.
Halfway through, the phone's screen blacked out and quickly came back in, but Odin said the process Failed, and the phone showed the following message.
Now, it is stuck on the above message. It is not like the normal download mode, but I can still flash the firmware through Odin. But always, halfway through, it gives the same error. The screen blackens, then quickly wakes up (takes like one second). Also, the phone doesn't seem to be charging, as when I disconnect it from the PC, it turns off completely.
My guess is, as the phone doesn't charge, it is an issue with the battery being dead.
I tried the smart switch app, but it doesn't recognize the phone.
The device is Samsung Galaxy J1 (2016) SM-J120G.
It has TWRP installed, but I can't access it now.
Rooted with Magisk.
Please help, I am a complete noob on this subject.
Click to expand...
Click to collapse
try it with a different cable, fresh download of the firmware, different computer or just try it several times in a row. itll likely work with a combination of some of those aforementioned methods. also could be the batt is too dead
Youdoofus said:
try it with a different cable, fresh download of the firmware, different computer or just try it several times in a row. itll likely work with a combination of some of those aforementioned methods. also could be the batt is too dead
Click to expand...
Click to collapse
Hello, I tried everything except downloading the firmware again, coz my internet is too slow. Also, I think the issue is with the phone.
First I connected the phone to the charger and left it to charge for more than 4 hours, but it still turns black randomly. So, either it is not being charged, or it's not a battery issue. Also, I tried with my brother's PC, and with another cable but the same result.
I think the device automatically reboots. When the screen goes black, it disconnects from the PC which results in failure. This happens even when not connected to a PC.
So basically, I am stuck on that error message. Once in a while, the screen turns black. Because it turns black before the flashing process is finished, it always fails.
Can you guess why the screen turns black randomly?
Thanks.
@ChathinduN
You get the Android's Black Screen Of Death because Android OS couldn't get loaded properly.
My recommendation: Re-flash Stock ROM.
jwoegerbauer said:
@ChathinduN
You get the Android's Black Screen Of Death because Android OS couldn't get loaded properly.
My recommendation: Re-flash Stock ROM.
Click to expand...
Click to collapse
But.. that's what I am trying to do. Odin fails to flash the ROM because the screen turns black.
ChathinduN said:
But.. that's what I am trying to do. Odin fails to flash the ROM because the screen turns black.
Click to expand...
Click to collapse
you very well might have a corrupted DL of the FW. Get Samfirm and download the FW with that. Its literally 4 to 5x faster than directly from sammobile.com/firmwares

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