with past OnePlus devices, I've just used a flash all script. As long as the bootloader is installed, should be able to flash whatever you want to it. I have yet to try on the Nord N10 though. Only got mine today
I am new to OnePlus completely after years of using Moto devices. Thank you for the pointer on flash-all scripts. I found respective articles and unpacked the firmware. I will try the flash in the next days. This is essentially how I updated all my Moto devices before.