Device Tree for OnePlus Nord N200 5G NA unlocked variant (dre9) for TWRP

The OnePlus Nord N200 5G (codenamed "dre9") is a budget smartphone from OnePlus. It was released June 25th, 2021.

Warning - Unffocial TWRP

This is not an official TWRP repository. Use at your own risk.

Note on Codenames

Note: Some locations refer to this device as codename "holi". "holi" is the codename for the board / platform, not the phone.

"dre9" is the codename for the OnePlusN200, the North America version of this phone which is carrier unlocked.

"dre8t" is the codename for the OnePlusN200TMO, the version of this phone sold by T-Mobile and Metro PCS.

https://github.com/OnePlusOSS/OpenSourceReleases/wiki/OnePlus-Nord-N200 is the source for these codenames.

Prereqs

I recommend reading through https://forum.xda-developers.com/t/dev-how-to-compile-twrp-touch-recovery.1943625/ before attempting to compile this repository.

Compile

First, create a new directory, and download the TWRP tree into it:

repo init --depth=1 -u https://github.com/minimal-manifest-twrp/platform_manifest_twrp_aosp.git -b twrp-11

Next, add this repository via a local manifest. Create .repo/local_manifests/local_manifest.xml with the following contents:

<?xml version="1.0" encoding="UTF-8"?>
<manifest>
  <remote name="github"
    fetch="https://github.com" />
  <project path="device/oneplus/dre9"
    name="daboross/android_device_oneplus_dre9-twrp"
    remote="github"
    revision="android-11" />
</manifest>

You might need to pick few patches from gerrit.twrp.me to get some stuff working.

TODO: verify whether this comment ^^ copied from kebab is accurate.

Sync the sources:

repo sync

To build, execute these commands in order

. build/envsetup.sh && \
    export ALLOW_MISSING_DEPENDENCIES=true && \
    export LC_ALL=C && \
    lunch twrp_dre9-eng && \
    make -j bootimage

To test it:

# To temporarily boot it
fastboot boot out/target/product/dre9/boot.img

# Since the Nord N200 5G uses a combined recovery-boot partition, you need to
# flash the boot partition. Note: you may want to switch to the non-active slot
# (a or b) before flashing to test.
fastboot flash recovery recovery.img

Kernel: https://github.com/AOSPA/android_kernel_oneplus_sm8250

Credits

• bigbiff for decryption
• theincognito-inc for original tree
• Systemad for original tree
• CaptainThrowback for original tree
• mauronofrio for original tree
• TWRP team