SM-G920F S6 bootloop after CF-auto root - Galaxy S6 Q&A, Help & Troubleshooting

Hey guys!
So this n00b was going to get rid of all the bloatware on SM-G920F using the following ROM:
http://forum.xda-developers.com/gal...xtrestolite-deodexed-mod-edition-1-3-t3119968
So i used ODIN 3.10.6 and chainfire CF-auto root: https://autoroot.chainfire.eu/
what i missed here is that this auto root was for 5.0.2 and i have 5.1.1
I'm guessing that this is causing my bootloop or bootfreeze?
I can't switch off my phone, screen is constantly at the "GALAXY S6 POWERED BY ANDROID" screen with the small red text "recovery is not seandroid enforcing".
If i hold the volume down, home and power button it will restart/reboot but still be stuck on the GALAXY S6 POWERED BY ANDROID screen.
So what now? i have to wait for the battery to die before i can try to get it in download mode or maybe even recovery mode?
What info do you guys need in order to help? i'm sure there is a simple fix? I'm in Sweden btw
EDIT: So only 2 hours after posting this the screen had gone black... and waiting another 20 minutes i tried to boot it in download mode, and it worked. @ Work right now so i want to try fixing this later today. So any one know for sure how to undo my root that failed? Can i Flash all stock by using Kies3 in download mode?
Appreciate your help guy's
EDIT 2: I can boot to TWRP... tried wipe and recovery. do you think i need to wipe/format data? If i format data what would be my next step? come on guy's help me out here

I think the wrong change of cf-auto-root causing this bootloop and bootfreeze, so if you want to get root change the right version of cf-autoroot. If you want to Flash all stock rom i advice to use odin because i dont know if kies3 can recognize your device

AlcatrazTiVu said:
I think the wrong change of cf-auto-root causing this bootloop and bootfreeze, so if you want to get root change the right version of cf-autoroot. If you want to Flash all stock rom i advice to use odin because i dont know if kies3 can recognize your device
Click to expand...
Click to collapse
This is what i think as well... You don't happen to know where to find a good trusted root for the galaxy s6 F920F?

Phone started!!
OK so i got the phone up and running again.
i flashed this kernel: https//github.com/AndreiLux/ref-3.10/releases/tag/alpha3
So RGB colours are different and youtube way worse. So this brings me to my next question; Can i do a factory data reset now? Will it make my phone standard again?
I am talking about the factory data reset from settings/backup and reset/Factory data reset... that will erase all storage, device settings etc....
if not... how can i turn my phone back to normal?

Toie86 said:
OK so i got the phone up and running again.
i flashed this kernel: https//github.com/AndreiLux/ref-3.10/releases/tag/alpha3
So RGB colours are different and youtube way worse. So this brings me to my next question; Can i do a factory data reset now? Will it make my phone standard again?
I am talking about the factory data reset from settings/backup and reset/Factory data reset... that will erase all storage, device settings etc....
if not... how can i turn my phone back to normal?
Click to expand...
Click to collapse
To get everything back to normal...
Download latest stock firmware for your phone from Sam Firmware and then flash it via ODIN. Just do it
It will reset your phone, but probably not the contents of internal /sdcard.
Dont use CF-AutoRoot as its not compatible with 5.1.1 anymore. To root your device, just flash any supported kernel you can find for Galaxy s6 as it has preinstalled root in it.
Dont use you CF-Auto root in 5.1.1.

batuzai04123 said:
To get everything back to normal...
Download latest stock firmware for your phone from Sam Firmware and then flash it via ODIN. Just do it
It will reset your phone, but probably not the contents of internal /sdcard.
Dont use CF-AutoRoot as its not compatible with 5.1.1 anymore. To root your device, just flash any supported kernel you can find for Galaxy s6 as it has preinstalled root in it.
Dont use you CF-Auto root in 5.1.1.
Click to expand...
Click to collapse
OK. i found this firmware PDA: G920FXXU3COI9 & CSC: G920FVDS3COI6
My original baseband is: G920FXXCOJ5 & G920FXXU3COI9
Will this firmware work for my phone? it is for my country.
thanks for your help so far!

Yes it will work, though if you're from 5.0.2, you can't downgrade anymore after flashing 5.1.1(COI9 based).

batuzai04123 said:
To get everything back to normal...
Download latest stock firmware for your phone from Sam Firmware and then flash it via ODIN. Just do it
It will reset your phone, but probably not the contents of internal /sdcard.
Dont use CF-AutoRoot as its not compatible with 5.1.1 anymore. To root your device, just flash any supported kernel you can find for Galaxy s6 as it has preinstalled root in it.
Dont use you CF-Auto root in 5.1.1.
Click to expand...
Click to collapse
Help out a noob here - what do you mean "it has preinstalled root in it?". I may be facing the same problem here. Thanks!
Bob

Related

[Q] Help

i own a ATT note 3 i rooted with Kingoo, I got XBast app and modified my phone so when it boots up so i don't see the annoying ATT and samsung logo. with the new 4.4 update that was released i messed up and unrooted my phone from super user app which work but i could not get the update at all it keep failing at 27% install i have permanently lose the all the logos on my phone when i reboot my phone i still have the "custom" lock on dart up i tried re flashing MJ5 but now am left with NB4 build and Baseband MJ5 my phone is constantly looking for att software and i get a constant error (the device has detected an application attempting up permitted actions. To protect your device it is recommended you reboot. ) the phone still boots up and can do pretty much everything with it just those problems are there is there anyway i can just make it like the day i bought it. i tried re rooting with king no luck. someone please help
rajeev2liz said:
i own a ATT note 3 i rooted with Kingoo, I got XBast app and modified my phone so when it boots up so i don't see the annoying ATT and samsung logo. with the new 4.4 update that was released i messed up and unrooted my phone from super user app which work but i could not get the update at all it keep failing at 27% install i have permanently lose the all the logos on my phone when i reboot my phone i still have the "custom" lock on dart up i tried re flashing MJ5 but now am left with NB4 build and Baseband MJ5 my phone is constantly looking for att software and i get a constant error (the device has detected an application attempting up permitted actions. To protect your device it is recommended you reboot. ) the phone still boots up and can do pretty much everything with it just those problems are there is there anyway i can just make it like the day i bought it. i tried re rooting with king no luck. someone please help
Click to expand...
Click to collapse
Just flash full stock firmware using odin. Your phone should be Samsung SM-N900A. Pls check and BE SURE if its really like that before flashing anything provided in my post.
Here you can doenload the stock firmware AT&T and Odin --> http://www.sammobile.com/firmwares/3/?download=25106
You should install latest Samsung USB drivers --> download USB driver
For safety measures you should perform a EFS Backup using this APP
You personal data will be deleted during the flash process so take care of making a backup of everything you need.
Thats just what you need i suppose
LS.xD said:
Just flash full stock firmware using odin. Your phone should be Samsung SM-N900A. Pls check and BE SURE if its really like that before flashing anything provided in my post.
Here you can doenload the stock firmware AT&T and Odin --> http://www.sammobile.com/firmwares/3/?download=25106
You should install latest Samsung USB drivers --> download USB driver
For safety measures you should perform a EFS Backup using this APP
You personal data will be deleted during the flash process so take care of making a backup of everything you need.
Thats just what you need i suppose
Click to expand...
Click to collapse
Thanks MI9 I will try I though you could not downgrade? my build is NB4 and my baseband is MJ5
rajeev2liz said:
Thanks MI9 I will try I though you could not downgrade? my build is NB4 and my baseband is MJ5
Click to expand...
Click to collapse
Why should it not be possible to flash a older firmware? The point is that i have found just that version for your phone. Official firmware flashing via Odin will not affect KNOX. You can perform OTA update to newer version later i think. Just keep the EFS backup in mind
thanks
LS.xD said:
Why should it not be possible to flash a older firmware? The point is that i have found just that version for your phone. Official firmware flashing via Odin will not affect KNOX. You can perform OTA update to newer version later i think. Just keep the EFS backup in mind
Click to expand...
Click to collapse
thanks a lot i will try it out and let you know. have a good day
Failed
rajeev2liz said:
thanks a lot i will try it out and let you know. have a good day
Click to expand...
Click to collapse
i tried it but it keeps failing on ODIN fails every time. any other suggestions?
rajeev2liz said:
i tried it but it keeps failing on ODIN fails every time. any other suggestions?
Click to expand...
Click to collapse
Can you post full error description pls. NOT ONLY "odin fails"...

Trying to unroot a Galaxy S6...losing the will to live :(

Can anyone help? I spent a big chunk of my hard earned money on a refurbed S6 for my daughter, she's had it about a week (she's Pokemon mad btw). The latest update for Pokemon Go came out and now she's blocked from the game as it appears the phone has been rooted. If I'd known, I wouldn't have bought it. Anyway, for the last 2 days my partner and I have been trying to unroot it. We've used various versions of Odin to no avail. I had a lot of trouble finding the right firmware because it looks like the phone was Polish according to the version and CSC numbers, and tbh I'm still not sure if we're trying the right one. Software is 5.1.1. right now. I've tried installing SuperSU but it won't run, it just crashes the phone and forces a reboot. We've tried manually unrooting with a file manager but the su files we need to delete reappear seconds after they're deleted. I'm at the end of my tether, does anyone have any ideas?
You won't be able to unroot it until you flash stock firmware. I don't know if the game checks the knox status.
Give this a go
http://www.androidpolice.com/2016/09/11/guide-play-pokemon-go-0-37-rooted-android-magisk/
Enjoy
Unforunately my partner spent almost all night trying to flash the firmware. According to him it 'nearly' worked, however, I now have a phone stuck in a boot loop. :crying:
Run emergency recovery on Smart switch
ccalixtro said:
Run emergency recovery on Smart switch
Click to expand...
Click to collapse
Do I need to have smart switch installed on the phone for this to work?
amber_1978 said:
Do I need to have smart switch installed on the phone for this to work?
Click to expand...
Click to collapse
No, run it on your pc.
Thanks, I'll give it a go after work.
ccalixtro said:
No, run it on your pc.
Click to expand...
Click to collapse
Smart switch won't work, says it doesn't recognise the device
I think I would give original firmware of your country and odin a try. One of possible ways is to download all needed files from the site of sammobile.
For me this way works every time when I stuck in boot loop. Odin functionates when you are in download mode. Switch off your s6, then start by pressing home-, powerbutton and Volume down at the same time.
Then start Odin on PC, then connect USB and so on.
Greetz JG
amber_1978 said:
Smart switch won't work, says it doesn't recognise the device
Click to expand...
Click to collapse
When you select emergency recovery theres an option where you have to write the device model and the serial number
Use kies 3 on your computer. When you get it do a "firmware upgrade and installation" it will ask for your serial number which you can get from download mode when pressing the home key. After that kies 3 will ask to boot your phone to recovery but instead boot to download and bow your phone will flash to stock. This method always work!!
fahad999 said:
Use kies 3 on your computer. When you get it do a "firmware upgrade and installation" it will ask for your serial number which you can get from download mode when pressing the home key. After that kies 3 will ask to boot your phone to recovery but instead boot to download and bow your phone will flash to stock. This method always work!!
Click to expand...
Click to collapse
Thanks for the reply. Unfortunately I've tried Kies already and I can't get it to work at all. I get a message telling me my device is not compatible and the whole thing just stops. I'll give it another go though, no harm in trying. Thanks
@amber_1978, Pokemon Go does not check for root. The only thing it does seem to check for is location spoofing via another app. I'm using it on a rooted, Knox tripped, Xposed installed phone with no issues.
If you want to return the phone back to stock, the best way IMO would be to use Odin to flash a stock image, such as the EPD1 firmware.
socal87 said:
@amber_1978, Pokemon Go does not check for root. The only thing it does seem to check for is location spoofing via another app. I'm using it on a rooted, Knox tripped, Xposed installed phone with no issues.
If you want to return the phone back to stock, the best way IMO would be to use Odin to flash a stock image, such as the EPD1 firmware.
Click to expand...
Click to collapse
Really? Did you do the latest update in the game and it still worked ok? This phone has definitley not been used for location spoofing by us and I'm pretty sure there were no apps of that nature on the phone. I downloaded a root checker when everything went wrong the other day, it said the phone was rooted. I'm totally at a loss tbh. Right now it's still in a boot loop. Trying to flash it with Odin as we speak.
Just an update. Tried Smart Switch. Tried the model and serial numbers on the back of the phone case, these weren't recognised so I went to the recovery screen and hit the home button and got a completely different set of numbers. Different IMEI, model number, you name it. I'm assuming this is why Odin won't work, I'm looking for the wrong firmware? I obviously have Frankenstein's phone. No idea what to do now.
Best thing to do is to flash TWRPP and try to flash a custom stock rom through the TWRP recovery which does not have root installed..... If that doesn't work try to find a generic stock firmware for Odin, meaning a firmware that can run in any country..... If all else fails update it to 6.0.1 stock firmware. Try the closest firmwares to your location.
And if you do manage to get to the Samsung logo let the phone sit there for a good 10 minutes even if it reboots....
When I bricked my Samsung I used masiks custom 6.0.1 rom based on stock, but had all the links to bootloaders cscs radios and what not so giv that a shot if you can find it.
---------- Post added at 12:08 AM ---------- Previous post was at 12:05 AM ----------
Link to rom that helped me http://forum.xda-developers.com/galaxy-s6/development/masik-marshmallow-1-0-jan-20-2016-t3297961
do you have lucky patcher playstore installed ?

HELP I have bricked by S7 Exynos

Hi
I have a massive problem with my S7.
I wanted to install TWRP on my phone so I could take a backup of my MM setup before upgrading to Nougat.
Once I installed TWRP I found that due to encryption on the device I couldnt take a backup. I then tried to reboot my phone but now it gets stuck on the Samsung Galaxy S7 logo and just boot loops.
Can anyone help or suggest how to get my phone working again?
Cheers
Glostermeteor
glostermeteor said:
Hi
I have a massive problem with my S7.
I wanted to install TWRP on my phone so I could take a backup of my MM setup before upgrading to Nougat.
Once I installed TWRP I found that due to encryption on the device I couldnt take a backup. I then tried to reboot my phone but now it gets stuck on the Samsung Galaxy S7 logo and just boot loops.
Can anyone help or suggest how to get my phone working again?
Cheers
Glostermeteor
Click to expand...
Click to collapse
I had the exact same problem. In your case I just booted my device into "Download Mode" and flashed the stock Nougat from the Sammobile page using Odin (download the appropriate version for your device) [in Download Mode it should say what version of Galaxy S7 you have, for example G930-5F/FD and so on] then you are good to go.
P.S. Don't worry, that is just a softbrick it's nothing to really worry about.
EDIT: If you want an simpler process, try to flash the stock rom using Smart Switch on your computer. Both methods worked for me
dotnexus said:
I had the exact same problem. In your case I just booted my device into "Download Mode" and flashed the stock Nougat from the Sammobile page using Odin (download the appropriate version for your device) [in Download Mode it should say what version of Galaxy S7 you have, for example G930-5F/FD and so on] then you are good to go.
P.S. Don't worry, that is just a softbrick it's nothing to really worry about.
EDIT: If you want an simpler process, try to flash the stock rom using Smart Switch on your computer. Both methods worked for me
Click to expand...
Click to collapse
Thanks! I actually managed to get it going again by flashing this tool:
https://build.nethunter.com/android-tools/no-verity-opt-encrypt/
Wrong thread
Sent from my Galaxy S7 using XDA Labs
@Vatsal
Sorry to mention you again, can you move this thread to Q&A as well? Thanks mate

Help with rooting Galaxy S7

Hey all,
I tried rooting my Galaxy S7 today with Odin 3.11.1 and I thought it all went fine, it said it passed and that it was successful. However when it starts to boot it gets no further than the boot screen which says "Samsung Galaxy S7" and then "Powered by Android" at the bottom. There isn't an unlocked padlock on the screen either which I thought there was meant to be. Any help would be much appreciated and at this point I am more than happy to just go back to stock firmware and forget rooting even exists.
SM-G930F
G930FXXU1DQD7
You can flash stock from updato.com and ODIN 3.12.3 or newer
*Detection* said:
You can flash stock from updato.com and ODIN 3.12.3 or newer
Click to expand...
Click to collapse
Is that guaranteed to fix my problem then and bring it back to stock?
Lethal_Trousers said:
Is that guaranteed to fix my problem then and bring it back to stock?
Click to expand...
Click to collapse
Nothing is a guarantee when you flash devices with custom stuff and break them
But flashing stock is guaranteed to take you back to stock obviously, so long as it flashes successfully (It will not reverse KNOX 0x1 though, good chance you've tripped KNOX already)
Seems you have reservations about flashing stock, but quite happy to try rooting the phone using an outdated ODIN?
Try downloading a stock firmware from sammobile (make sure to find the right model and android version), extract it and then flash it with odin (assuming that you can still enter download mode). File is quite large to download, but Internet Download Manager (IDM) could speed up the process by 4-5 times. As for rooting, I have an S7 myself and I managed to successfully root it using Odin and chainfire's auto root file. However, I was also stuck in your situation the first time I tried and had to factory reset before trying again. Can't remember the cause though.
The easiest way is using samsung smart-switch.
There is a menue "emergency-recovery" or similar.
Follow the instructions and it will automatically download the actual firmware and flash it.
Good luck

Help with my Samsung galaxy s7 edge in bootloop after reset

I have a Samsung Galaxy S7 Edge, I thought I was smart enough to try and root the phone but I was wrong. Now it is in a bootloop. I have tried everything...I did a factory reset, flashed, cleared the cache partition, I have used Kies3, Smart Switch, ADB server, tried it all and now I am just needing help if anyone can help me.
I tried to go back to Kies3 but it keeps rejecting my serialnumber for some reason, I even went back to the recovery log in the recovery console to make sure the serial number was right. I am just lost now. The only thing it does is a bootloop and I can get to recovery console, and the bootloader.
If anyone can help I would so appreciate it.
pinkgeek said:
I have a Samsung Galaxy S7 Edge, I thought I was smart enough to try and root the phone but I was wrong. Now it is in a bootloop. I have tried everything...I did a factory reset, flashed, cleared the cache partition, I have used Kies3, Smart Switch, ADB server, tried it all and now I am just needing help if anyone can help me.
I tried to go back to Kies3 but it keeps rejecting my serialnumber for some reason, I even went back to the recovery log in the recovery console to make sure the serial number was right. I am just lost now. The only thing it does is a bootloop and I can get to recovery console, and the bootloader.
If anyone can help I would so appreciate it.
Click to expand...
Click to collapse
Flash stock with ODIN 3.12.3 or newer, download firmware from updato.com
This is the S7 flat forum though, S7 Edge here
https://forum.xda-developers.com/s7-edge
I forgot to mention that
I forgot to mention that I did that, could it be possible I used the wrong firmware? If so, how to I make sure it is the correct one?
*Detection* said:
Flash stock with ODIN 3.12.3 or newer, download firmware from updato.com
This is the S7 flat forum though, S7 Edge here
https://forum.xda-developers.com/s7-edge
Click to expand...
Click to collapse
PDA?
Im Not sure which firmware to choose, it lists a PDA # and I dont know which one is for mine...I have SM-G935R4
pinkgeek said:
Im Not sure which firmware to choose, it lists a PDA # and I dont know which one is for mine...I have SM-G935R4
Click to expand...
Click to collapse
Best to ask in the Edge forum
pinkgeek said:
Im Not sure which firmware to choose, it lists a PDA # and I dont know which one is for mine...I have SM-G935R4
Click to expand...
Click to collapse
Take a look in here:
https://www.google.ro/amp/s/forum.x...l/tool-samfirm-samsung-firmware-t2988647/amp/
I use this little program every time i need a stock firmare.

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