Samaung s6 g920F fails to update to android 6 - Galaxy S6 Q&A, Help & Troubleshooting

Hi im trying to update my samsung G920F to a marshmallow but any attempt to leaves it in a bootloop. Ive sucessfully installed twrp however when installing a custom rom the device is stuck at the Samsung loading screen. Ive tried usuing diffrent versions of odin, twrp and also tried to install stock firmwares for anroid 5 and 6 via odin but all fail. Ive restored the phone back to android 5.1.1 using smart switch and then attemped to root it with CF-root so then i can try install the recovery using the app but after flashing cf root with odin the phone is stuck in a boot loop again with 'Kernel is not Seandroid Enforcing ' on the top left of the screen.
Do i need to do anything before i flash the rom or twrp or root?
and does anyone know how to update the G920F to android 6?
thanks

Which error do you get when you try to flash a stock rom over Odin?

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Please help!!! I cannot root and install rom in G920i (G920IDVU3DOL5)

Hi,
I was trying to root my phone and install custom rom but i cant.
I have tried CF-auto root, and unibase v2 and also triedd to flash TWRP but no luck.
When i tired CF-autoroot, im stuck in Galaxy S6 powered by android screen with message saying Recovery is not seandroid and it bootloops continuously.
When i try with unibase v2 and i tried to flash TWRP and SU method, but i end up same as above. I cannot even flash TWRP(3.0.0.0 and 3.0.01 and older versions too)
One way i found to root is by using G920F version's CF-autoroot where i successfully rooted my phone and boots to homescreen. But i cannot flash TWRP or any other recovery using all methods(Flashify, Rashr, Flashfire and even TWRP manager). The same bootloop repeats when flashing.
Please help me in this issue, as i terribly want to root my phone since stock does not give me battery back up and i cant even get 2.30 hours SOT in it.
Thanks in advance.

Bricked my phone, need help

So i have a SM-G920I, i installed a custom rom the other day. I deleted a few folders from my SDCARD today, and when i restarted the phone i got the "recovery is not seandroid enforcing" error.
I got into DOWNLOAD mode and use Heindall to flash recocery.img from the stock 5.1.1 ROM for my phone. But now it just sits on the Samsung Galaxy S6 logo.
Anyone got any ideas?
Try to rescue it via Smart Switch, or flash a stock ROM via Odin or Heimdall
Have you tried flashing the stock kernel? If you were running a custom ROM, you will probably need to reflash everything, such as your PIT and Kernel and bootloader. I had this same issue when I was playing around on a Note 4. You should probably avoid custom ROMs until you know how to unbrick a device as many of them tend to have issues.
MrMochaka said:
So i have a SM-G920I, i installed a custom rom the other day. I deleted a few folders from my SDCARD today, and when i restarted the phone i got the "recovery is not seandroid enforcing" error.
I got into DOWNLOAD mode and use Heindall to flash recocery.img from the stock 5.1.1 ROM for my phone. But now it just sits on the Samsung Galaxy S6 logo.
Anyone got any ideas?
Click to expand...
Click to collapse
sucks sorry that happened

HELP Samsung Galaxy S6 SM-G920T NO OS

This problem started after I tried to install XPOSED my phone was rooted.... when I installed XPOSED I got a boot loop and accidentally erased everything even my OS somehow... I got TWRP back on my phone but cant do anything else it just boots up onto the GALAXY S6 screen ive tried to install stock firmware but it keeps saying FAIL on ODIN I followed step by step I need help!
90% of the time Odin fails if u trying to downgrade. Why not just download one of the ROMs on XDA and flash it via twrp
Can you link me to one?

Galaxy Note N8000 stuck on samsung logo after update. Everything stock never rooted.

Hello,
My N8000 was updating today and it got stuck at the samsung logo agter the "Galaxy note 10.1" screen. I am unable to access recovery mode; only download mode. I have been looking for hours for a solution but can't find any. I have tried to flash a stock ROM from sammobile not working (odin always fails) , tried flashing both custom and stock recoveries but odin keeps failing. I installed the toolkit but inorder to flash roms and stuff i need usb debugging to be enabled, and it is not. Is there a way to enable it while on bootloop?
Thanks,
Where does Odin fail ??
JJEgan said:
Where does Odin fail ??
Click to expand...
Click to collapse
When flashing stock recovery, it fails at recovery.img, flashing rom at boot.img
Suggests wrong files used .
Or possible damaged NAND .

Samsung galaxy 7 (sm-930f) bricked custom recovery can't be unlocked

I have a problem with my samsung galaxy s7. So i wanted to install a custom rom. It went wrong but there were no worries because i could still unlock twrp custom recovery. I had made a backup of my rom, i forgot to wipe the phone and then it got bricked. Now i can't unlock custom recovery and i have tried installing the firmware of my samsung galaxy s7 (android 8.0 oreo). It didn't work with odin because at failes the entire time. Trying a few times and i got another error: the error that says i should download samsung switch and do a emergency reboot. So I installed the smart switch software But it doesn't recognise my phone when I'm in download mode.
my SD card isn't corrupted. PLEASE HELP!!!!
Lars
Flash latest January firmware with Odin.

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