leowweiqi
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Will data be wiped?
It just 1 time effort. It solve the nfc gpay transport issue. Tested.
Will data be wiped?
So to keep things simple:
1. Download Android 11 Developer Beta from:
Oneplus 8 - https://oxygenos.oneplus.net/OnePlus8Oxygen_15_OTA_0030_all_2008081530_4dc587d23b294492.zip
Oneplus 8 Pro - https://oxygenos.oneplus.net/OnePlus8ProOxygen_15_OTA_0030_all_2008081530_9a9db011689d490a.zip
2. Downgrade to Stable release:
Oneplus 8 - https://oxygenos.oneplus.net/OnePlu...all_2007160040_downgrade_44ff527388f24f3c.zip
Oneplus 8 Pro - https://oxygenos.oneplus.net/OnePlu...all_2007160041_downgrade_9d5b29a0d9834b5d.zip
Steps to flash in between builds:
1. Download the latest ROM upgrade zip package from the specified server.
2. Copy the Rollback package to the phone storage. (Skip this step if you download directly on your phone)
3. Go to Settings -> System -> System Updates -> Click top right icon -> Local upgrade -> Click on the corresponding installation package -> Upgrade -> System upgrade completed to 100%.
4. After the upgrade is complete, click Restart.
5. Update successful.
Thanks for listing out ! For helping others
It just 1 time effort. It solve the nfc gpay transport issue. Tested.
Alright. Hope it really works. It’s painful to redo again lol.
No worries. I am always helping everyone here
To add on, after downgrading, i will recommend to boot to recovery mode by pressing vol down and power button. Then wipe cache and reboot phone
Amended my guide as well
Alright. Hope it really works. It*********s painful to redo again lol.

Tested mine so far so good. But i wait test a while more first![]()
Upgrade wont erase settings bro unless u factory reset. If u downgrade, by right it will auto factory reset so volte will be goneUpdated to the first zip of your post already. Now I just update again with the 2nd link zip only right?
oh btw i noticed the volte is enabled in oxygen 11. will it be the same when it's officially out?
I thought someone said the gpay is disabled on 11? Mine is there. Has anyone else tried gpay on 11?

Upgrade wont erase settings bro unless u factory reset. If u downgrade, by right it will auto factory reset so volte will be gone
And yes, update to 2nd link zip, then do a clear cache
Ya I know. I haven*********t done the *********downgrade********* yet. But I didn*********t have the volte before I upgrade so I wonder why this time round it auto activated the volte without me needing to do those extra manual steps.

Ya I know. I haven’t done the “downgrade” yet. But I didn’t have the volte before I upgrade so I wonder why this time round it auto activated the volte without me needing to do those extra manual steps.
Btw just realised your 2nd link is BA version. Maybe can include the 3 different versions in the guide so ppl can choose their preferred version (NA/IN/EU)?
Tested mine so far so good. But i wait test a while more first![]()
don’t put too much hope on volte, it works due to this is still pre release software and basically ‘dirty’ flash on top of your current settings.Ya I know. I haven*********t done the *********downgrade********* yet. But I didn*********t have the volte before I upgrade so I wonder why this time round it auto activated the volte without me needing to do those extra manual steps.
Btw just realised your 2nd link is BA version. Maybe can include the 3 different versions in the guide so ppl can choose their preferred version (NA/IN/EU)?
Ya I know. I haven*********t done the *********downgrade********* yet. But I didn*********t have the volte before I upgrade so I wonder why this time round it auto activated the volte without me needing to do those extra manual steps.
Btw just realised your 2nd link is BA version. Maybe can include the 3 different versions in the guide so ppl can choose their preferred version (NA/IN/EU)?
Anyway I downgraded to the global version Liao. So much time wasted. Tmr will test the gpay again.