It looks like you're trying to work with a Shantae: Half-Genie Hero game file (NSP is a Nintendo Switch game format, and update 1.05 suggests a patch). However, the filename 105rar is unusual—it might be a typo or a split archive part (.rar).

Here’s a breakdown of what you likely need, along with a safety and setup feature guide.

How to Legitimately Update Shantae: Half-Genie Hero to Version 1.05

If you own a legitimate copy of Shantae: Half-Genie Hero on Nintendo Switch, updating is simple and free.

Step 1 – Extract the real NSP

• Use 7-Zip or WinRAR to extract the .rar file.
• Inside, you should find a .nsp file (usually titleid.nsp or update.nsp).

Step-by-Step Instructions:

1. Connect your Nintendo Switch to the internet – Ensure your console is online.
2. Highlight the game icon on the Home Menu.
3. Press the + or – button on your Joy-Con or Pro Controller.
4. Select “Software Update” from the menu.
5. Choose “Via the Internet”.
6. The console will check for the latest update. If 1.05 is not the newest version already, it will download and install automatically.

Alternatively, you can enable “Automatic Software Updates” in System Settings to have updates install in sleep mode.

✅ Note: Version 1.05 may have been superseded by later patches (1.06, 1.07, etc.) depending on your region. Always install the latest official version.

3. Controller and Input Enhancements

• Improved response time for Joy-Con and Pro Controller inputs, particularly during precision platforming sections.
• Fixed a glitch where transformations (Monkey, Elephant, etc.) would occasionally fail to register button presses.