Fail to local upgrade using Oxygen Updater from KB2003_11_C.20 to KB2003_11_C.33

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4n0nymou2

Member
Jan 3, 2021
9
0
I tried to update Oxygen OS 12 using Oxygen updater to a newer one however during local update it shows "system installation failed" at 0%

why is that happening?
Screenshot_2022-08-07-14-58-40-88_81acaadf7dd4290b3f605946fc8268aa.jpg
 

4n0nymou2

Member
Jan 3, 2021
9
0
I have also tried to change the meta properties to disable engine verification but that still doesn't work
 

BillGoss

Senior Member
Sep 2, 2010
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Sydney
OnePlus 8T
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saksoo

Senior Member
Jan 12, 2011
80
9
I had the same problem. Problem occurs when you are in C20 with wrong build number (C21) and device not certified problem. I installed a modified C21 and then C33 worked normally.
 
so if you want to update and keep your root just open magisk, uninstall, restore images, DO NOT REBOOT!!!!!. Go update the increment and wait till you get prompted to reboot, DO NOT REBOOT!!!!!. go back into magisk, select install and then OTA updates. run it and reboot using magisk. now you'll keep root and update to the latest. if you have a custom recovery, download the latest android 12 FULL OTA from the oneplus update app from playstore and use payload dumper to extract recovery.img and flash it assuming you have bootloader unlocked. this way you can update using the OTA update install of magisk earlier.
 

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