BOOTLOOP on downgrading to Marshmallow - Galaxy S6 Q&A, Help & Troubleshooting

Hey Guys
i was running on Nougat latest may security patch on my device but I wanted to Downgrade to Marshmallow
Here is my phone model number
Model S6-g920F
I downloaded firmware from latest marshmallow firmware from Sammobile and tried to flash through Odin
After successfully completing the flash the phone is on bootloop.
Can anyone tell me how to downgrade without causing a bootloop

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So recently, i decided to try and update my rooted custom rom galaxy s5. But i don't want to update to 6.0.1 because rooting won't work for my device model and so i would only like to update to 5.1.1. I cant update it through the phone settings because my firmware/rom was modified. I don't want to flash any stock firmware/rom on my device either because then, i wouldn't be able to update my device through the settings in the future. So what would you guys recommended i do?
Correct me if i am wrong. But if i update my firmware through kies right now, it will use the latest 6.0.1 firmware instead of 5.1.1.

[Q] How to downgrade J700F to 5.1.1 after november update(MM)

Hey guys since I upgraded my J700F to the latest version with october security patch
I dont seem to be able ti downgrade my phone to 5.1.1
I tried some ways including deleting 2 files from 5.1.1 rom and fkash but no luck
Everytime i get this error in downloading mode:
sw rev check fail device 1 binary 0
Please someone give me a step by step guide to downgrade to 5.1.1
Thanks
Flash using odin
I guess you will have to do it using odin. Search these forums for the guide. I saw it around here. Use search man. Thanks.
Download the firmware of 5.1.1 of j700f from sam mobiles website and flash it with odin
please i need some help too can't downgrade it from mm to lp.. i read on some tread that the new mm bootloader did that
When boost mobile and sprint and virgin mobile updated their j7s from f3 to ph4 they did the samething but on 6.0.1. What they did was stop the flashing of the older rom which did not have the Asks software security. When you flash a older android version such as 5.0 over a new android version such as 6.0 the flash is declined. You cant downgrade cause the bootloader prevents it thats why theres a error message in odin.. not really sure why youd want 5.0 over 6.0.

Regarding Downgrading to Marshmallow from Nougat in Samsung J7 Prime.

Hey I am using Samsung J7 prime and recently i upgraded to Nougat through OTA Update. But after updating my phone to Nougat I am facing certain issues and major issue is regarding Battery Drainage.
So i want to downgrade the firmware to Marshmallow using ODIN Flash tool by downloading Firmware from Samsung-Firmware.org
But i have certain doubts that if i downgrade my firmware can i again revert back to original Firmware through OTA update.
If yes then please tell the exact method to revert back to original OS after downgrading through Odin flash tool.
Any help will be appreciated.
Thanks

J7 SM-J710MN not works after update to nougat

After I upgraded my J7 SM-J710MN to the Nougat android, the touch no longer works. I'm from Brazil and tried to flash through odin 4 rom stock 6.0 versions and FAIL always appears. Only the Nougat version I was able to flash but it did not work.
Which firmware version should I install? What to do?
The latest mm from august doesn't work?
Tried flashing the nougat TTT?
jrkiller said:
After I upgraded my J7 SM-J710MN to the Nougat android, the touch no longer works. I'm from Brazil and tried to flash through odin 4 rom stock 6.0 versions and FAIL always appears. Only the Nougat version I was able to flash but it did not work.
Which firmware version should I install? What to do?
Click to expand...
Click to collapse
That problem you have in your mobile is because you have installed Nougat 7 with the binary 4, you can not return to MM, here I leave the Original firmware TTT (Trinidad and Tobago) operator-free, before installing the firmware performs complete wipes, thus avoid Bugs in the New firmware.
https://forum.xda-developers.com/galaxy-j7/how-to/galaxy-j7-sm-j710mn-android-7-stock-t3672932
J710mn bit 6 fix touch
Hi guys I need solution fix touch j710mn bit 6 ? Thanks

URGENTCustom binary frplocked was on Superman Rom,unable to flash stock firmware odin

I was running on Superman rom(superstock kernel)
i tried to reboot while suddenly couldnt do so coz custom binary frp was locked.
I tried to flash stock firmware(did not download it from Sammobile and it was a nougat firmware)FAILED
Note: Rooted the phone months ago when it was on oreo
What could be the reason for the fail? is it because I tried to install a older firmware?
Please reply at the earliest
Thanks in advance!
Oreo firmware seems to be detecting custom firmware and would FRP locked the bootloader and the only way to fix it is to get to download mode and flash stock firmware with odin.

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