To use this file on a modified Nintendo Switch, follow these steps based on guides from Ziperto and Switch Hacks Guide : 1. Prepare your SD Card
Tinfoil is a popular tool for installing NSP files directly from your SD card. Launch from your Switch's Homebrew Menu. Navigate to the File Browser tab. REDMONSLOVLIGHT-(JPN)-NSwTcH-[BASE]-NSP-Ziperto...
: Connect your SD card to your PC and create a folder named NSP in the root directory. Copy the REDMONSLOVLIGHT...[BASE].nsp file into this folder. 2. Install using Tinfoil (Recommended) To use this file on a modified Nintendo