is it possible to downgrade s8 from oreo to nugget or not ?

spawnlives

Senior Member
Jan 27, 2018
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MINE IS:
SM-G950F Oreo
G950FXXU3CRGH

is it possible ?
i trid to install twrp but got :"
custom binary blocked by oem

Yes you can root this phone.

Your issue with twrp is because your bootloader/OEM is locked preventing you from flashing.
OEM unlock is in developer menu section

Be aware that modifying your phone will trip your knox. So no more ota updates and Knox related apps/functions will not work again as well as voiding your warranty(depending on region).

Just something off the internet for enabling developer options :

https://www.google.com.au/amp/s/wccftech.com/galaxy-s8-developer-options/amp/

Also read this guide carefully

https://forum.xda-developers.com/sa...w-to/guide-root-install-twrp-samsung-t3747535

If you are going to install twrp use latest version 3.2.3.2 ( If flashing through Odin you will need the extension .img.tar file )
From your model number you posted use the s8 twrp version not the s8+
 
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