It looks like you’re asking about a NSP update (file format for Nintendo Switch games) for Everybody 1-2-Switch!, specifically version 1.0.1 in a .rar archive.
If you're trying to create a post about this topic, here's an example: everybody 12switch nspupdate 101rar
| Aspect | Details | |--------|---------| | Latest official version | 1.1.0 (as of mid-2025) | | Update size | ~500 MB | | What it fixes | Network stability, smartphone connectivity, minor UI bugs | | How to get it legally | Connect Switch to internet → highlight game icon → press + → Software Update → Via Internet | | Physical cartridge base version | 1.0.0 | It looks like you’re asking about a NSP