Here is the manual:

Steps to Install

Step 1
*Download ARK2 Firm from the given link.
*Mirror for firm
*Use this odin
*Choose all files one by one in Odin.
*Boot your device to download mode.
*Plug cable and press start in odin.

Step 2
*Download update.zip from here : http://pie.msbonnema.nl/update.zip
*If you have sd card place update.zip in it boot to recovery by holding power up + power +bixby button.
*just choose install update, If no sd card choose adb in recovery.
*Download adb from here
*Download and install adb drivers.
*Once done type adb sideload and drag drop zip to that adb cmd.
*and hit enter.

Beta 2 is out!

ZRKQ to ZRL6
*Download update.zip from here : http://pie.msbonnema.nl/beta2/update.zip

Beta 3 is out!

ZRL6 to ZRLR
*Download update.zip from here : http://pie.msbonnema.nl/beta3/update.zip

Beta 4 is out!

ZRLR to ZRLT
*Download update.zip from here : http://pie.msbonnema.nl/beta4/update.zip

Stable is out!

ZRLT to CRLT
*Download update.zip from here : http://pie.msbonnema.nl/stable/update.zip