LineageOS 14.1 on the Galaxy S4 Mini

Ever since the wife started using the LG G Pro 2 (D838), the Samsung Galaxy S4 Mini (GT-I9195T) has been gathering dust on a shelf. Decided to put a custom ROM on it, and was pleasantly surprised that it's already running CM13.1 (Android 6.0.1). Can't remember when I did that. And given that it already has a TWRP custom recovery on it, flashing LOS14.1 on it is a cinch.

Download latest firmware here:
https://download.lineageos.org/serranoltexx

Get Google Apps here:
http://opengapps.org/
Choose either the pico, nano, or micro variant of the Android 7.1 gapps (ARM platform).

If you want to get root, download the addonsu package from https://download.lineageos.org/extras

Copy all three files to a microSD card, and let's start.

1. Boot into recovery (Vol Up & Home & Power).
2. Wipe the Cache, System, and Data partitions.
3. Flash the LOS firmware, gapps, and the addonsu zips.
4. Reboot system.

First boot takes a very long time, so don't be tempted to restart the phone. Just let it finish its work. Once booted, Go to Settings, About Phone. Tap the build number seven times to enable Developer Options. Change root access to your desired method.