OnePlus Nord メモ

TWRP
https://forum.xda-developers.com/oneplus-nord/development/recovery-unofficial-twrp-oneplus-nord-t4142149

How to Install OTA Updates on Rooted Android Devices using Magisk [Without Losing Root]
https://www.thecustomdroid.com/install-ota-update-rooted-android-device-guide/