As we all know, OnePlus 9 series phones switch to ColorOS from HydrogenOS in China, so how to switch install Oneplus 9 Pro from ColorOS to OxygenOS, Gizmoweek post a how to guide without unlocking the bootloader, support official OTA update.
Please keep battery life of OnePlus 9 Pro phones above 60% before starting install the phones, backup personal data.
1, Download downgrade zip file, OnePlus 9 Pro download link https://dubox.com/s/10afc-KlIha3-XYba92Uasw (Password e222 ) , OnePlus 9 download link: https://dubox.com/s/1nFEumPjIAy72JNRmM5lolg (Password qywr).
2, Download complete and copy to phones, tap the OnePlus 9 Pro : “Settings” > “Software update” > “Settings (top right corner Gear icon)” > “Select installation package” > Select the intell ROM file > tap “Install now”
3, Please waiting loading and reading file package to 100%, tap restart and update the phone automatic from ColorOS to OxygenOS.
EDIT’S PICK : How to buy OnePlus Phones in Australia
Oxygen OS 2 latest Q&A: 1. OnePlus 9 series Installed the Oxygen OS version, you will receive an OTA update later. 2. problem IMEI does not display is expected to be resolved in the next OTA upgrade.
I tried this method and I got a verification failed message. Any advice?
Please double check your download ROM is downgrade full ROM !
It fails installation at 60% everytime
Any help?
Any link to share downgrade oxgyen os of oneplus 9?
https://www.dubox.com/web/share/link?surl=0afc-KlIha3-XYba92Uasw (password e222) , please first registered it.
Installation fails at 60%
Any help?
OnePlus Oxygen OS OTA Update pushed Fixed display bug of IMEI https://www.gizmoweek.com/oneplus-oxygen-os-ota-update-pushed-fixed-display-bug-of-imei/
OnePlus official Build software upgrade download updated on May 7, EU ver Version 11.2.4.4.LE15BA , US Version 11.2.4.4.LE15AA , IN Version 11.2.4.4.LE15DA