Downgrade from Oreo to Nougat - no root - stock recovery - OnePlus 3 Questions & Answers

Hello ,
i have upgraded using OTA to Oreo but some of the critical apps related to my work are not compatible with Oreo yet so i want to downgrade to Nougat,
I have non rooted phone with stock recovery,
i have also searched for this but couldn't find a answer for stock recovery.
Kindly please help.

Go to the below link and download the special build they have provided there and flash it via recovery. You'll be booted back to nougat though you'll loose partial data. You can find more info there.
Link : https://forums.oneplus.net/threads/...e-oneplus-3-and-19-for-the-oneplus-3t.700432/

Related

[Q] Need help! Steps on installing lollipop with custom recovery + root

Hi guys,
I'm not sure exactly where to look for the steps because I'm in a unique situation or atleast I think I am. I need help on installing the LOLLIPOP firmware (N900TUVUFOB6) with a custom recovery and root. I am currently on a rooted note 3 v4.3 with the N900TUVUBMI7 baseband version.do I need to update my bootloader to a newer version? Should I atleast do a stock update to 4.4? Should I be using which custom recovery?
If I'm correct, I can't just flash the latest custom recovery and then flash the newest lollipop (for example the newest TEKHD like this link http://forum.xda-developers.com/showthread.php?t=2672393
Or can I? What If I just did a normal software update to upgrade me to lollipop, will the bootloader be blocked, disabling me from installing a custom recovery since I would want to root as well. And then would I be able to resume the steps from TEKHD instruction?
Thanks!

downgrading firmware

Hello guys
I have flashed lollipop in my oppo find 7 but I want to go back to the official stock firmware v1.2.3i so can any one tell how can I do it I have the official stock rom but while flashing it says installation failed please tell.
Have you enabled unified storage on lollipop, because it has to be disabled before to downgrade 1.2.3i.
Beware that will wipe your data.

[SMP600] on 4.4.2 custom - want to upgrade, I'm on ND1 do I need to upgrade firmware?

The title almost says it all.
I am on a custom 4.4.2 ROM (using ND1 firmware) and want to look into upgrading to 5.1.1 or higher. Obviously rooted with TWRP recovery.
I know I'll need to upgrade my TWRP from 2.6.0.3 or whatever it is on right now to 3 or better - but I need to know if I will have to flash official stock 5.1 to upgrade to the newest firmware, if there is a newest firmware, to get the install clean with minimal errors or can I just flash a custom TW ROM and hope that upgrades the firmware, if there is new firmware, or is there a thread I can be directed to so I can read up on what I need to do to upgrade?
Or since I am already rooted with TWRP, can I just upgrade or flash my twrp to a known good version and flash a rom then be on my way?
Thanks in advance!
Dear Friend , It's all clear that if if you want to install any TW Lollipop ROMs, you need to first install a Lollipop firmware ( Using Odin ) to install a Lollipop bootloader ( do not even think of ticking the update bootloader in Odin because then you wouldn't be able to revert into KK firmware and then you can't run any KK ROM on Lollipop bootloader ) and then install a TWRP ( I recommend ShevT's one which is less glitchie and faster than the official ones because of the F2FS support !! ) and then you're free to go the way you like
... Hope it helps ... With Best Wishes - Hitman1376

Flash stock rom, downgrade and root

Hi, first time posting here. If doing it wrong sorry.
Rooted my s9+, flashed soldier rom. All ok.
Want to go back and use stock UK H3G rom [downloaded from sammobile] (to use substratum themes).
Backuped EFS
If i flash stock rom (from 9.0 to 8.0) using odin will I be able to root without waiting for bootloader to unlock and downgrading wont be a issue?
Hope you can help me with that.
Thanks!

Going back to Oreo - Downgrade

Hi there, I have my reasons, but I want to return back to a custom Oreo rom, I'm currently on a custom ROM with the latest firmware 9.0.7, so is it a case of downloading a earlier stock firmware, flashing in recovery? Also as I want to stay decrypted too, do I still use the v4 no Verity file on Oreo?
Thanks everyone
I am also thinking of going back to Oreo and have my reasons also. I think the best way would be to use the Aroma installer by brad which has oreo stock too.
https://androidfilehost.com/?fid=11410963190603897704
would also be very interested if downgrade is possible. bought a used 5t with pie but need xposed and a few modules. anybody out there who tried downgrade?
Hi..I successfully downgraded my 5t to Oreo ob19 using flashable zip from below link
https://forum.xda-developers.com/oneplus-5t/how-to/oneplus-5t-mirrors-official-oxygen-os-t3708099
Copy the rom zip to internal storage. Reboot into stock/twrp
Wipe data/cache reset system settings
Flash zip and wipe cache then restart
We are back into the good old Oreo...

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