Downgrade from Oreo to Nougat!? - Sprint Samsung Galaxy S7 Questions & Answers

Accidently updated from nougat to oreo RE7. now I regret it and I want to go back to nougat. Is that possible without bricking phone?

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axon 7 A2017U - do all software updates so far have fully unlockable bootloader?

I am currently on A2017U B29 Marshmallow 6.0.1 full Stock. I did not upgrade so far to Nougat, in fear of ZTE locking the bootloader, etc.
In future, I want to fully unlock the bootloader, install TWRP, and load Lineage OS.
If I upgrade my phone to the latest Stock Nougat, will I still be able to do the move to lineage - did ZTE mess up the bootloader any way in Nougat?
From what I read here, it is safe to do so and that I can always unlock the bootloader no matter what - but I need a quick confirmation.
Thanks.
deepasadish said:
I am currently on A2017U B29 Marshmallow 6.0.1 full Stock. I did not upgrade so far to Nougat, in fear of ZTE locking the bootloader, etc.
In future, I want to fully unlock the bootloader, install TWRP, and load Lineage OS.
If I upgrade my phone to the latest Stock Nougat, will I still be able to do the move to lineage - did ZTE mess up the bootloader any way in Nougat?
From what I read here, it is safe to do so and that I can always unlock the bootloader no matter what - but I need a quick confirmation.
Thanks.
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Click to collapse
You can always downgrade... you just have to get the Marshmallow update zip and install it with mifavor. totally legal and stuff

How to rollback to stock?

Hi there, im currently on the leaked oreo beta on my A2017G but since this month there should be the official oreo out i wish to rollback to stock. Do i just need to flash latest rom on it? Do i need to relock the bootloader and remove twrp to get new ota updates?
https://forum.xda-developers.com/axon-7/how-to/guide-return-to-stock-custom-rom-t3634369 (like i also suggested at reddit )

Downgrade from Oreo to Nougat

I bought an S8 with oreo. With oreo I can't use fingerprint to open apps without a secure lockscreen.
Can I downgrade my phone to nougat? How? Will I lose the warranty or have similar problems?
Thanks

will I brick my phone if a downgrade from pie to oreo

currenly I have android 9 with january 5 security patch, would the phone brick if I try to downgrade to oreo
thanks for any help
https://forum.xda-developers.com/mi-a1/how-to/tutorial-downgrade-9-0-to-8-1-edl-imei-t3879624

Downgrade from Pie to Oreo

I have a G950F unrooted and with stock Pie. Is it possible to downgrade to Oreo ? Of course I'm keen to root and unblock the booloader
the gladiator said:
I have a G950F unrooted and with stock Pie. Is it possible to downgrade to Oreo ? Of course I'm keen to root and unblock the booloader
Click to expand...
Click to collapse
Depending on what firmware version you are on. Due to bootloader(binary) versions increasing you cannot downgrade to a previous version, only a previous version with the same bootloader number or a higher version.
Basically if you on version 5 (bootloader/binary) you won't be able to downgrade to Oreo.
The only way is if there is a custom rom that has an Oreo favour to it.
You can still root on pie.

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