[Guide] OxygenOS 12 C.21 update for OnePlus 8 Pro EU

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laikexpert

Senior Member
Feb 27, 2012
571
320
CyberSpace
OxygenOS 12 C.21 update for OnePlus 8 Pro EU
(How to make this update.)


1.) Download C.21 EU (3.99 GB) with Oxygen Updater
2.) Edit it with TotalCommander
on your phone or 7zip on your computer.

Inside the zip file: open "payload properties.text"
and change one line from:
oplus_update_engine_verify_disable=0
to:
oplus_update_engine_verify_disable=1
And save it.

3.) After that do C.21 EU update
with a local update application.

- Play Market certified.
- Everything works fine.


original author:
Robert Uszok

Screenshot_2022-07-26-20-07-33-99_b5a5c5cb02ca09c784c5d88160e2ec24.jpg


Screenshot_2022-07-26-11-18-26-21_9492aa3750dca76abb7c25b39a5f1e8e.jpg
 

chris 08

New member
Feb 16, 2017
3
0
<Moderator Edit>: English translation added to the top.
Hello,
Doesn't work for me.... impossible extraction...

Original:
Bonjour,
Marche pas chez moi.... extraction impossible ...
 
Last edited by a moderator:

windo34

Senior Member
Sep 25, 2014
216
76
OnePlus 9 Pro
OxygenOS 12 C.21 update for OnePlus 8 Pro EU
(How to make this update.)


1.) Download C.21 EU (3.99 GB) with Oxygen Updater
2.) Edit it with TotalCommander
on your phone or 7zip on your computer.

Inside the zip file: open "payload properties.text"
and change one line from:
oplus_update_engine_verify_disable=0
to:
oplus_update_engine_verify_disable=1
And save it.

3.) After that do C.21 EU update
with a local update application.

- Play Market certified.
- Everything works fine.


original author:
Robert Uszok

View attachment 5669361

View attachment 5669363
Hi anyone has patched boot.img for EU C21?
Thanks 🙏🙏🙏
 

xtcislove

Senior Member
Jan 17, 2010
1,282
256
Gummersbach
OnePlus 8 Pro
OnePlus 9 Pro
Hi anyone has patched boot.img for EU C21?
Thanks 🙏🙏🙏
Simply unpack it yourself in the future?

EU-IN2023_C.21_Magisk-25.2-BOOT
 
  • Like
Reactions: windo34

ante0

Senior Member
Dec 28, 2009
3,211
1,579
Stockholm
Thanks, I guess I have to wait till oxygen updater send it for my region
Something seem to have broken in C.20. I had to turn on advanced options in Oxygen updater to be able to download both C.21 and now C.33, else it would just show the notification that an update is available but it said Phone is up to date in the app. Turning that option on will always allow you to download the latest version.

Might be worth checking out anyway.
 

henk-jan.b

Member
Dec 2, 2020
17
6
OnePlus 8 Pro
Something seem to have broken in C.20. I had to turn on advanced options in Oxygen updater to be able to download both C.21 and now C.33, else it would just show the notification that an update is available but it said Phone is up to date in the app. Turning that option on will always allow you to download the latest version.

Might be worth checking out anyway.
With advanced option dismissed (turned off) I got the update one day later anyhow. But thanks for your tip.
 

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  • 5
    OxygenOS 12 C.21 update for OnePlus 8 Pro EU
    (How to make this update.)


    1.) Download C.21 EU (3.99 GB) with Oxygen Updater
    2.) Edit it with TotalCommander
    on your phone or 7zip on your computer.

    Inside the zip file: open "payload properties.text"
    and change one line from:
    oplus_update_engine_verify_disable=0
    to:
    oplus_update_engine_verify_disable=1
    And save it.

    3.) After that do C.21 EU update
    with a local update application.

    - Play Market certified.
    - Everything works fine.


    original author:
    Robert Uszok

    Screenshot_2022-07-26-20-07-33-99_b5a5c5cb02ca09c784c5d88160e2ec24.jpg


    Screenshot_2022-07-26-11-18-26-21_9492aa3750dca76abb7c25b39a5f1e8e.jpg
    1
    Hi anyone has patched boot.img for EU C21?
    Thanks 🙏🙏🙏
    Simply unpack it yourself in the future?

    EU-IN2023_C.21_Magisk-25.2-BOOT
    1
    Couldn't update my OnePlus 8 pro
    This guide fixed it!!!
    Just use total commander

    Many thank for this