Can I downgrade SM-G950U from 9.0 to 8.0? - Samsung Galaxy S8 Questions and Answers

Hi,
I have a Sprint Samsung S8 (SM-G950U) running on Android 9.0 Rev 1.0 (G950USQS6DSJ1).
I need to downgrade to Android Version 8.0.
Is it possible to do so?
I have not had any luck.
Any help would be appreciated.
Either I can or cant and if I can, I will continue research. If not, I will drop it.
Thank you!

deviouskind said:
Hi,
I have a Sprint Samsung S8 (SM-G950U) running on Android 9.0 Rev 1.0 (G950USQS6DSJ1).
I need to downgrade to Android Version 8.0.
Is it possible to do so?
I have not had any luck.
Any help would be appreciated.
Either I can or cant and if I can, I will continue research. If not, I will drop it.
Thank you!
Click to expand...
Click to collapse
No oreo is bit 5 and you are on bit 6 all bit 6 are pie It is not possible Will not be, If you need oreo either finder older s8 on lower bootloader or another device

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buick85gn said:
My SM-930P recently updated to the new 8.0 Oreo and now it is crazy slow and laggy. I cant stand using this phone now the way it is! Can i go back to the older version if so could some one point me to a guide? Thank you so much for any help!
Click to expand...
Click to collapse
The last Oreo G930P update is still using binary 6, so you can downgrade to Nougat 7.0.
Here the last Nougat 7.0 build:
https://androidfilehost.com/?fid=674106145207489613
Here Odin3 v3.13.1:
https://dl.sammobile.com/Odin3-v3.13.1.zip

Downgrade Samsung Galaxy S7 EDGE

Hello guys! I would like to downgrade my Samsung Galaxy S7 Edge to a version where I have the outdated security patch, preferably in the May 2018 version for me to play Pokémon Go. However, I downloaded a ROM of that date but when it was installed, the security patch remained the same, February 2019. I am downloading another ROM, but with the android version 7.0, but if anyone can help me in knowing what the problem is, thank you!
How did u downgrade
I can't downgrade.." Can't install, device 4, binary 3" something like that using Odin.. can u help?
ammo11900 said:
I can't downgrade.." Can't install, device 4, binary 3" something like that using Odin.. can u help?
Click to expand...
Click to collapse
U can't go back only up , no downgrading possible
Can you help me?
Scorpionea said:
U can't go back only up , no downgrading possible
Click to expand...
Click to collapse
I finally got it, i root it and i try to install hungarian firmware, baceuse i cant unlock it -w-
I want to downgrade my sprint s7 edge (it has oreo 8.0.0 G935PVPUACSJ3) for root and network unlock.
There is no way to downgrade as i read, but what about rooting?

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zmavage said:
Hello, I am new to the rooting world, I wanted to root my Samsung Galaxy S8 (sm-6950u1) which is running on android pie but don't know what to use or how to start. I have searched on google A LOT but can't find anything relating to android pie. Can anyone help me?
Click to expand...
Click to collapse
No root on pie. Nougat only. And if your on a bit 7 firmware no root even for any. 5th digit from thr far end of your firmware is the bit number. 1 through 7 your in pie so 5 to 7

downgrade from latest 8.0 to early 7.0 build

Hi guys,
Really dumb question.
I currently have an Exynos S7 edge which is running the latest version of firmware 8.0. I wanted to downgrade the firmware to do location spoofing (just to test things for fun) but latest security patch etc. means I cant do it, if I'm correct? I would need to go back to a early android 7.0 2017 firmware version & I don't think this is possible, ODIN hasn't worked so I'm guessing not?
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How to downgrade from 8.0 to 7.0 on SM-G930A?

My friends Samsung Galaxy S7 SM-G930A sounds worse on 8.0 than it did on 7.0, he seems to think so we need to downgrade to 7.0 again. Is that possible?
Thanks
chris1892006 said:
My friends Samsung Galaxy S7 SM-G930A sounds worse on 8.0 than it did on 7.0, he seems to think so we need to downgrade to 7.0 again. Is that possible?
Thanks
Click to expand...
Click to collapse
afaik that's only possible when they use the same bootloader.
That means if the bootloader was changed while upgrading to 8 it may not be possible.
While using Odin it will tell you if flashing will work or not.
I would download both stocks and compare the BL... files if comparison is not answered somewhere in XDA.
It downgraded without an issue & upgraded again without an issue since my friend cannot make up his mind if he thinks 7.0 is worse or better than 8.0. Anyway it all worked out.

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