一、xda原址：

　　https://forum.xda-developers.com/nova-plus/development/rom-lineageos-15-1-t3838338

二、安裝說明：

1、Download the ROM and put it on sdcard. Root isn‘t included in ROM yet. You can grab the lineage addon here (removal addon here). If you want GAPPS too, then download MindTheGapps (mirror or Open Gapps too (choose arm64, 8.1 and pico or other variant if you want more gapps).

2、Reboot in TWRP by pressing all 3 buttons (Volume UP + Volume Down + Power).

3、Wipe system, data, cache and dalvik-cache. Flash the ROM from the directory where you‘ve placed it.

4、Flash lineage‘s root addon / GAPPS (OPTIONALLY).

5、Reboot.

　　安裝說明直接從原帖裏copy過來的，這點都看不懂滾回去學英語吧，再見！

三、Twrp、ROM、Magisk & lineage addon、GAPPS:

　　鏈接: https://pan.baidu.com/s/1v4eqWkTd8SvDtJeXnqJW-A

　　密碼: vx2p

四、其他：

　　安裝過程中遇到了一個問題——進入系統後找不到指紋設置。

　　解決辦法如下：

1 adb shell
2 su
3 stop fps_hal
4 start fps_hal

華為麥芒5 lineageos15.1 安卓8.1