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rage302

Senior Member
May 29, 2012
280
217
OnePlus 8T
After this hell of an update (waiting time, SafetyNET CTS fail, Bug in C20 Rom preventing update to C21 without full wipe, etc.).. there is finally a workaround.
Kudos to @mcboums and @ruszok for the solution and the modified C21.zip.
See here and here.

Now I'm on KB2003 EU C.21 OOS12.1 with persisting root (flash magisk into inactive Slot before rebooting) and SafetyNET passes now.

greetings rage
 
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yelped

Senior Member
Feb 10, 2011
209
31
T-Mobile 8 and 8T+ finally got their Android 12 update today.

Anyone tried it yet?

Any bugs?

Or did the months of waiting at least save T-Mobile users from all the bugs that the initial builds for other 8Ts had?
 

horsecharles

Senior Member
Dec 14, 2010
88
22
NYC
T-Mobile 8 and 8T+ finally got their Android 12 update today.

Anyone tried it yet?

Any bugs?

Or did the months of waiting at least save T-Mobile users from all the bugs that the initial builds for other 8Ts had?
No issues so far. Everything snappy and snazzy; this with thousands of browser tabs open & several hundreds of apps installed- some multi-user \ 60% storage used up \ all docs & images on the cloud.
Like the new look much better.

Let me know if you want to test for any specific bugs.

Will be getting 10T more than likely.

PS be patient with update- at several steps looks frozen but it isn't.
 

BillGoss

Senior Member
Sep 2, 2010
5,330
4,743
Sydney
OnePlus 8T

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0wdj

Member
Oct 25, 2020
11
2
The new update just broke my Vanced...

The stock YT app is 17.13 which is way higher than the last Vanced app thus I can't install it anymore
 

rage302

Senior Member
May 29, 2012
280
217
OnePlus 8T
Okay I was a little surprised, that we get this C.33 (EU) Full OTA that fast.

Oxygen OS 12.1 C.33

Change log:
System
• Improves system stability for some scenarios
• Fixes an issue where fingerprint unlock might be slow to respond
• Optimizes the experience of fingerprint unlocking
• Integrates the July 2022 Android security patch to enhance system security
Communication
• Improves stability of mobile network connections

Download Links:
KB2003 (EU)

KB2005 (GLO)
greetings rage
 
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rage302

Senior Member
May 29, 2012
280
217
OnePlus 8T
...updated successful from C.21 (C.21 installed with the modified .zip, verification bypass).
I used the built in System Updater -> local package.
The System Updater update process looks a little different -> it shows first "extracting" and then "install" instead of reboot... so i tapped on install and the phone rebooted.. so i had no chance to root inactive slot in magisk.
But today i used the common method from here to gain root again-> https://forum.xda-developers.com/t/guide-root-and-keeping-root-options.4387977/ -> Section A.1

No problems, i have root access again and SafetyNET passes.

Do you have stock boot img from c33?

Here is my stock boot.img and the magisk_patched_boot.img (Magisk 25.2) for your use ->

greetings rage
 
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quick6black

Member
Jan 21, 2011
34
2
Franklin
OnePlus 8T
...updated successful from C.21 (C.21 installed with the modified .zip, verification bypass).
I used the built in System Updater -> local package.
The System Updater update process looks a little different -> it shows first "extracting" and then "install" instead of reboot... so i tapped on install and the phone rebooted.. so i had no chance to root inactive slot in magisk.
But today i used the common method from here to gain root again-> https://forum.xda-developers.com/t/guide-root-and-keeping-root-options.4387977/ -> Section A.1

No problems, i have root access again and SafetyNET passes.



Here is my stock boot.img and the magisk_patched_boot.img (Magisk 25.2) for your use ->

greetings rage
where did you download the modified c21 update for kb2003?
 

MustangLife03

Senior Member
Jan 25, 2015
158
33
The one issue I see is if you are a gamer. Something happened that broke 90-120 FPS in gaming like Call of Duty Mobile despite refresh rate on screen showing 120HZ. Something with Android 12 has gaming pegged at a meh 60 FPS.
 

BillGoss

Senior Member
Sep 2, 2010
5,330
4,743
Sydney
OnePlus 8T
Okay I was a little surpirsed, that we get this C.33 (EU) Full OTA that fast.

Oxygen OS 12.1 C.33

Change log:
System
• Improves system stability for some scenarios
• Fixes an issue where fingerprint unlock might be slow to respond
• Optimizes the experience of fingerprint unlocking
• Integrates the July 2022 Android security patch to enhance system security
Communication
• Improves stability of mobile network connections

Download Links:
KB2003 (EU)

KB2005 (GLO)
greetings rage
I suggest you clarify that the KB2005 update you've linked is the C.20 incremental update.
 

daxola123

New member
Dec 7, 2010
1
0
OnePlus 8T
T-Mobile 8 and 8T+ finally got their Android 12 update today.

Anyone tried it yet?

Any bugs?

Or did the months of waiting at least save T-Mobile users from all the bugs that the initial builds for other 8Ts had?
I noticed HDMI out feature stopped working with the new Android 12 update. I tried out some custom roms (both Android 11 & 12), and it works on those. But found I'm not a big fan of pixel and AOSP themes so I'm going back to OOS 11 latest until new updates for OOS 12 arrive to hopefully fix this.
 

klaymaniaf

Senior Member
Nov 27, 2011
188
43
My KB2003 EU has not received Android 12 OTA until now.
I know that Android 12 is available trough Oxygen Updater app or other links for local update, but, as oneplus is stating, that is not a recomended way to update the phone.
Oneplus is incredible!
 

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