Own a Samsung Galaxy S8 and envy the new features that made their debut on the new Galaxy S9? Fear not as a developer has churned out a ROM that brings all the S9 features to the S8 via third party custom ROM. Now, in order to install this S9 ROM on S8, you will need to install TWRP custom recovery. This is a piece of program that lets you install third party ROMs on the Galaxy S8.