So this is not my work some developers had done unofficial build of lineageos 18.1 Android 11 based rom at oneplus nord 2 community I am just tested and sharing it at here.
All credit goes to SakilMondal from nord 2 telegram channel.
Bugs:
1)autobrighness is not working.
2)alert slider is not working.
3)NFC not working.
Prerequisites:
1) Working TWRP
2) You must be on latest OOS A15 or Elixir custom rom.
Steps:
1)If you are on custom rom elixir os download lineageos 18.1 and gapps and place them in pendrive
If you are on oxygenos A15 place both files in internal storage.
2)Now boot your device in to TWRP by using advance reboot if you are on stock oos use adb command
adb reboot recovery.
3)when we booted in to TWRP now connect USB OTG and go to mount and checkmark usb storage,after click to select storage and select usb storage.(skip otg process for oxygen os A15 users)
4)Now click install and select lineageos zip flash then falsh gapps now click reboot and select bootloader.
5)when phone boots to bootloader connect to pc and go to folder where we placed A15 stock boot emmc open command prompt there and type following commands.
fastboot devices
fastboot flash boot boot.emmc.win
For EU user inhave given boot as boot.img so cmd command will be as below
fastboot flash boot boot.img
fastboot -w
fastboot reboot
Phone will boot it May stuck at 1+ logo but don't worry it will boot to lineageos 18.1 within 10min so wait atleast for 10min.
Downloads:
Download LineageOS 18.1:
drive.google.com
Gapps:
opengapps.org
Download Indian boot img (emmc.win.format):
{Mod edit: Link removed}
fastboot flash boot boot.emmc.win
Download boot img for EU:
{Mod edit: Link removed}
cmd command:
fastboot flash boot boot.img
Cmd command to erase data:
fastboot -w
Google camera stable app:
If you are still want some video instructions here is a guide.
All credit goes to SakilMondal from nord 2 telegram channel.
Bugs:
1)autobrighness is not working.
2)alert slider is not working.
3)NFC not working.
Prerequisites:
1) Working TWRP
2) You must be on latest OOS A15 or Elixir custom rom.
Steps:
1)If you are on custom rom elixir os download lineageos 18.1 and gapps and place them in pendrive
If you are on oxygenos A15 place both files in internal storage.
2)Now boot your device in to TWRP by using advance reboot if you are on stock oos use adb command
adb reboot recovery.
3)when we booted in to TWRP now connect USB OTG and go to mount and checkmark usb storage,after click to select storage and select usb storage.(skip otg process for oxygen os A15 users)
4)Now click install and select lineageos zip flash then falsh gapps now click reboot and select bootloader.
5)when phone boots to bootloader connect to pc and go to folder where we placed A15 stock boot emmc open command prompt there and type following commands.
fastboot devices
fastboot flash boot boot.emmc.win
For EU user inhave given boot as boot.img so cmd command will be as below
fastboot flash boot boot.img
fastboot -w
fastboot reboot
Phone will boot it May stuck at 1+ logo but don't worry it will boot to lineageos 18.1 within 10min so wait atleast for 10min.
Downloads:
Download LineageOS 18.1:
lineage-18.1-20211228-UNOFFICIAL-denniz.zip

Gapps:
The Open GApps Project
OpenGApps.org offers information and pre-built packages of The Open GApps Project. The Open GApps Project is an open-source effort to script the automatic generation of up-to-date Google Apps packages. All Android versions and platforms supported.
Download Indian boot img (emmc.win.format):
{Mod edit: Link removed}
fastboot flash boot boot.emmc.win
Download boot img for EU:
{Mod edit: Link removed}
cmd command:
fastboot flash boot boot.img
Cmd command to erase data:
fastboot -w
Google camera stable app:
If you are still want some video instructions here is a guide.
Last edited by a moderator: