Downgrade Pie to Oreo

[creeve4]

Is there anything special that I need to do to downgrade from Pie back to Oreo?
I want to try a few Pie ROMs and if I don't find anything better than my current Oreo setup I would like to be able to rollback.

 

[strongst]

Is there anything special that I need to do to downgrade from Pie back to Oreo?
I want to try a few Pie ROMs and if I don't find anything better than my current Oreo setup I would like to be able to rollback.

You should be aware that Pie twrp's require pie firmware and not Oreo firmware.
This means: use older recovery if you want to test pie and roll back to oreo without any problems.

 

[creeve4]

If using Oreo TWRP, can I just flash 5.1.7 to downgrade from 9.0.1?

 

[strongst]

If using Oreo TWRP, can I just flash 5.1.7 to downgrade from 9.0.1?

Yes., but a clean flash may be necessary if problems occur, so keep that in mind.

 

[creeve4]

Yes., but a clean flash may be necessary if problems occur, so keep that in mind.

I figured a clean flash would be best. Thanks again!

 

[thiagomz]

Guys ... My bootloader is locked .. No root ... All original here ..

How to go back from pie to Oreo ?

 

[DoR3M3]

You should be aware that Pie twrp's require pie firmware and not Oreo firmware.
This means: use older recovery if you want to test pie and roll back to oreo without any problems.

This makes no sense, how is someone suppose to use Pie with an older Oreo version of TWRP installed to the recovery?

With PIE installed you'll need the PIE firmware version of TWRP and can you really flash Oreo in the PIE TWRP to downgrade?

hmm

 

[creeve4]

This makes no sense, how is someone suppose to use Pie with an older Oreo version of TWRP installed to the recovery?

With PIE installed you'll need the PIE firmware version of TWRP and can you really flash Oreo in the PIE TWRP to downgrade?

hmm

You can flash pie firmware with Oreo TWRP. You just need to remove the compatibility.zip

 

[DoR3M3]

You can flash pie firmware with Oreo TWRP. You just need to remove the compatibility.zip

Ahhh ok thanks...

 

[lukeflegg]

Hi everyone,
I'm not much of a techie person but my lord I am hating Android 9. I really badly want to go back to the perfect Android 8 Oreo, and I'm searching for a detailed tutorial how to do this on my OnePlus 5.
Any tips?
Thank you!

 

[strongst]

Hi everyone,
I'm not much of a techie person but my lord I am hating Android 9. I really badly want to go back to the perfect Android 8 Oreo, and I'm searching for a detailed tutorial how to do this on my OnePlus 5.
Any tips?
Thank you!

I recommend to read the entire tread, there are tips.

 

[lukeflegg]

I recommend to read the entire tread, there are tips.

I have done.
As I said, I'm looking for a detailed walk-through on how to roll back my OnePlus 5 from Pie to Oreo, and there's no detailed walk-through in this thread (nor linked to from this thread)
Thanks

 

[strongst]

I have done.
As I said, I'm looking for a detailed walk-through on how to roll back my OnePlus 5 from Pie to Oreo, and there's no detailed walk-through in this thread (nor linked to from this thread)
Thanks

Post 2,3 and 4 gives you everything you need to know. You can simply downgrade but use an Oreo twrp since Oreo needs Oreo ready twrp. What are your concerns?
What about details of your device?