[OnePlus 8 Pro  Guides, News, & Discussion] josephxdaForum:
I have written this comprehensive step by step guide on how to flash CRDROID android 12 ROM for the OnePlus 8 Pro. The original instructions do not cover enough detail.

Ensure you have all applicable drivers installed onto your computer by following this video tutorial:

Reset your phone through using this MSM tool to return to Oxygen OS 11: https://xdaforums.com/t/op8pro-oos-...l-to-restore-your-device-to-oxygenos.4084953/

Install the application to your windows device

Choose the international version

Turn off the phone. Hold BOTH the VOLUME UP AND DOWN at the same time and plug into the computer. The application will now recognise the phone where you can do a factory reset to Oxygen OS 11.

Install Oxygen OS11 on BOTH Slots:

install the latest Oxygen OS 11 from the OnePlus website, as a local upgrade: https://www.oneplus.com/uk/support/softwareupgrade/details?code=PM1587123976

If the official link goes down, find the file from here: https://xdaforums.com/t/oneplus-8-pro-rom-ota-oxygen-os-repo-of-oxygen-os-builds.4084315/

Restore to oos 11 using msm -> unlock bootloader -> download latest oos 11 -> transfer to phone -> then system update via local upgrade -> reboot and update via local upgrade + reboot again

Connect to the internet

Click multiple times on the build number after updating to enable developer options

Enable options of OEM unlocking and USB debugging

Once you press usb debugging, connect your device to your pc -> a window will pop up on your device -> press always allow from device. You need to do this for usb debugging to work.

Enter fastboot mode by pressing and holding the Power button to bring up the Power menu and select 'Power Off'. Once you have done that: Press and hold the Volume Up', 'Volume Down', and 'Power' keys together to enter Fastboot Mode.

Unlock the OEM:

Once you're in fastboot mode after pressing oem unlock + usb debugging toggles -> type 'fastboot oem unlock' -> press volume up + power for yes and the device will reboot.

To install the RECOVERY

Download the file named like this: crDroidAndroid-12.0-XXXXXXXX-instantnoodlep-v8.X.zip and recovery from the officaial website:

https://crdroid.net/instantnoodlep/8

put it in the same folder where your adb files are

Open CMD from the adb tools folder on your computer, and type 'fastboot devices'.

if working properly, you will see your device

Type 'fastboot flash recovery recovery.img'

Reboot to recovery

To install custom ROM from recovery

choose "Factory reset"

choose "Apply update"

adb sideload "crDroidAndroid-12.0-XXXXXXXX-instantnoodlep-v8.X.zip"

reboot recovery

choose "Apply update"

Install the correct GAPPS

You're supposed to use nikgapps-SL basic and Nikgapps-SL addons (if needed to restore from playstore backup. Use pixel wizard setup for this.) Good examples of addons you should use will be attached.

For Nikagpps-SL: https://sourceforge.net/projects/nikgapps/files/Releases/NikGapps-SL/09-Jul-2022/ and for Nikagpps-SL addons: https://sourceforge.net/projects/nikgapps/files/Releases/Addons-SL/09-Jul-2022/

adb sideload "gapps"

choose "Apply update"

adb sideload addons

Do the "Apply Update" and sideload each addon

choose "Apply update"

To root the phone:

adb sideload magisk.zip (Change magisk.apk to magisk.zip)

reboot to system

Please comment below if this has helped! :)