OnePlus Nord N20 5G (gunnar) for eOS-a15 3.1.2
e-3.1.2-a15-20250831-UNOFFICIAL-gunnar.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/OtherSmartphones/e-3.1.2-a15-20250831-UNOFFICIAL-gunnar.zip/download
Please see sources and install instructions including recovery here:
https://wiki.lineageos.org/devices/gunnar
This device is now officially supported by LineageOS.
Use it at your own risk!
Please support the developer(s)!