Hacking Homebrew 3DS-anmboot: Add an official-like boot animation to the 3DS

Epic0522 · 2026-08-19T09:58:36+0100

https://www.youtube.com/watch?v=bpshLegmTa8

A small firm script that doesn't require any video conversion, retrieves footage from the game's startup process and displays it point-to-point.
And it doesn't affect startup time.

https://github.com/Epic0522/3ds-anmboot

PoorPocketsMcNewHold · 2026-08-20T09:50:08+0100

Really interesting, I'll try on hardware.
I also do see that the raw files for the animations are generated before-hand in the firm binary (Just saw the video, you do confirm in the description that the animation is indeed in the firm file, the way you worded it sounded the firm file took the boot animation from the system, when booting games instead), so it could be used to easily create custom boot animations ?
As you said, we did had it with BAX before but it was a converted video file played back, rather than an actual animation playing.

Epic0522 · 2026-08-20T10:08:35+0100

PoorPocketsMcNewHold said:
Really interesting, I'll try on hardware.
I also do see that the raw files for the animations are generated before-hand in the firm binary (Just saw the video, you do confirm in the description that the animation is indeed in the firm file, the way you worded it sounded the firm file took the boot animation from the system, when booting games instead), so it could be used to easily create custom boot animations ?
As you said, we did had it with BAX before but it was a converted video file played back, rather than an actual animation playing.

I extracted animations and assets from the boot.bin of a released game and burnt them into the .firm. I only wanted an official-style startup animation, not a flashy video. So I wasn't sure if I could modify it to use other animations. Converted BAX videos always have color differences, so I created this.

Hacking Homebrew 3DS-anmboot: Add an official-like boot animation to the 3DS

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