Manual Installation

Here are the steps if you want to manually install the Infinite Beat Saber mod:

Download the latest version from the releases page.
Unzip the release and drop InfiniteBeatSaber.dll into your Beat Saber's Plugins/ folder. For example, mine is located at C:\Program Files (x86)\Steam\steamapps\common\Beat Saber\Plugins.
You'll also need to similarly manually install these into your Beat Saber's Plugins/ folder:
- CustomJSONData
- SiraUtil

You'll need to make sure that you have compatible versions of all of these things:

Beat Saber
Infinite Beat Saber mod
CustomJSONData
SiraUtil

To determine this, you can check manifest.json for the version of Infinite Beat Saber you downloaded.

The "Manual Installation" section of this Beat Saber Modding Group page has general information about manually installing mods.