Downgrade to Noguat from Officail Oreo fido canadaina carier s8 plus - Samsung Galaxy S8 Questions and Answers

If i downgrade from oreo to noguat am i going to trap knox ? and also is it even possible to downgrade through odin after having official oreo firmware in my s8 plus ?
Thanks

Related

[Q] does G900I 6.0.1 marshmallow allow downgrade?

Would it be possible to downgrade from marshmallow to kitkat?
Condition
-No custom firmware
-Current marshmallow is official and planning to go back to kitkat official stock firmware
-knox is still 0x0 after downgrade. Is this possible?
Device model
S5 g900i
Android 6.0.1 marshmallow
Security patch level 1 June 2016
Use odin to flash the KitKat firmware. That'd probably work for you.
But be careful selecting the right firmware for your model!

downgrade

Can I downgrade my Verizon Samsung Galaxy S7 Edge back to marshmallow 6.0.1 from nougat 7.0
Yes, you will need to Odin firmware PH1 or PI3 as they have the same bootloader version as Nougat.
https://forum.xda-developers.com/verizon-s7-edge/how-to/firmware-verizon-s7-edge-t3344092

Question , S7 edge verizon firmware

my s7 edge running android 6.0.1 , firmware version (G935VVRS4APH1) and i want to flash firmware (G935VVRU4BQG1) this is android 7.0 nougat, both is stock verizon firmware, are any problem? may i flash this firmware with Odin??

Will Samsung release Oreo firmware for S8 (950u1 - XAA)?

Any one know if they will be releasing unlocked oreo firmware for 950u1 - XAA? Or will I have to go back to carrier locked firmwares for Oreo 950u?

SM-G950F Downgrade Bootloader U5 to U1 (9 pie to 7 Nougat stock)

Hi to all, i have S8 G950F, updated with odin with G950FXXU5DSFB_G950FOXM5DSFB_ITV (U5 bootloader).
So i must return to Nougat ( 7.0) : G950FXXU1AQK7_G950FOXM1AQK7_ITV U1 bootloader
but odin failed because samsung blocked downgrade firmware.
So now what i can do for install Nougat 7.0 ? it 's possibile install tswrp with no root and flash with odin 7.0 ? which version i can use?
thanks
farohp said:
Hi to all, i have S8 G950F, updated with odin with G950FXXU5DSFB_G950FOXM5DSFB_ITV (U5 bootloader).
So i must return to Nougat ( 7.0) : G950FXXU1AQK7_G950FOXM1AQK7_ITV U1 bootloader
but odin failed because samsung blocked downgrade firmware.
So now what i can do for install Nougat 7.0 ? it 's possibile install tswrp with no root and flash with odin 7.0 ? which version i can use?
thanks
Click to expand...
Click to collapse
Some people say downgrading bootloader can be possible through combination file ect but if u never use that file then don't, u can do more harm then good.
Otherwise no bootloader can't be downgraded and your stuck with pie
Search Search Search! Don't be stupid, Samsung bootloader nowaday cannot be downgrade (e.g from U5->U4)...the security check will not pass nor flashing is not possible!

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