Hacking Nsp Repack (game info and icon change)

LegoSuperMarioSonicMoon · Monday at 3:36 PM

Hello to anyone who reads this. I'm interested in repacking nsp, particularly changing icon and game info. I already know that sys ticon exists. But it is module that runs in background, which is awful considering I can't get applet to work. Plus it doesn't entirely work global. And for emulators too, best thing would be actual changes inside of rom.
I tried repacking with hactool and hacpack but it seems to fail after installing it, eden stays that metadata is still asking for old control nca file. How do i make a proper new cnmt.nca??
Please help

Ligeia · 2026-06-30T16:36:47+0100

I'm also interested in this since all my custom icons have stopped being displayed since Firmware 20.0.0 or something, I'd love to be able to change them directly in the NSP file.

lvlv · 2026-07-01T18:46:58+0100

Extract the NCA files inside an NSP package. After extraction, you will get NACP files and DAT image files.
The NACP text file lets you edit game details such as the game title and version number. The DAT file stores the game icon.
It is recommended to use a 256×256 JPG image with a file size no larger than 100 KB.
Simply rename your JPG file to DAT, replace the original file, then repack everything to finish.

hippy dave · 2026-07-01T19:55:49+0100

Ligeia said:
I'm also interested in this since all my custom icons have stopped being displayed since Firmware 20.0.0 or something, I'd love to be able to change them directly in the NSP file.

Look for sys-ticon I think it's called, something like that. New version of sys-tweak for icon changes on new fw.

Hacking Nsp Repack (game info and icon change)

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