From Odin click on the AP option and load
the TWRP recovery package.
Remember that
the TWRP recovery package from below is compatible only with the Exynos Samsung Galaxy Note8 — don't mess things up and be careful before starting the installation procedure from below.
Not exact matches
zip
package and you can install these files only by using a custom
recovery image such as CWM or
TWRP recovery.
Tap on Install and load the firmware
package you want to flash; then swipe and wait while the update operation is completed — if you are not using
TWRP recovery, then choose «install zip from SD card» followed by «choose zip from SD card».
Of course, you can still use the
TWRP recovery image for making a Nandroid backup — that's a dedicated backup operation that is saving the whole Android system into a separate
package, which can then be used for a downgrade operation.
From there you now need to tap on Install and to load the Lineage OS
package — if
TWRP recovery isn't used, then you will have to select «install zip from SD card» and «choose zip from SD card».
A custom
recovery like
TWRP is also required to flash the ROM file, following which users can flash the GApps
package and enjoy the latest stock Android Marshmallow experience in their Redmi Note 3, combining the best of both worlds.