Redmonslovlight-(jpn)-nswtch-[base]-nsp-ziperto...

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.

Open sdmc:/ (your SD card) and find the NSP folder you created. Select the NSP file and press A . REDMONSLOVLIGHT-(JPN)-NSwTcH-[BASE]-NSP-Ziperto...

: Ensure your microSD card is formatted to FAT32 for maximum compatibility and to prevent file system corruption. Tinfoil is a popular tool for installing NSP