Jailbreak Fire (using BackdoorInstaller)

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+--- Thread: Jailbreak Fire (using BackdoorInstaller) (/thread-24891.html)

Jailbreak Fire (using BackdoorInstaller) - komame - 2026-03-29 13:12

This works only on a physical HP Prime G1 device (no support for G2 or emulators).

I’m sharing my first simple app that runs native code on the HP Prime G1. This is possible thanks to BackdoorInstaller by NatsukiMin (thanks!).

This is assembly code that generates a fullscreen fire effect, animated at the maximum possible speed. It’s quite a computationally intensive problem. There’s a lot of math happening for each pixel (weighted influence of neighboring pixels, dimming with increasing height / temperature drop).

There’s a lot of computation because the screen resolution is 320×240, which means 76,800 pixels to process per frame. Each pixel involves around 18–22 arithmetic and logical operations, which results in roughly 1,500,000 operations per frame! And how many frames per second does it generate?
…over 120.
That gives ~180 million operations per second. That’s several orders of magnitude faster than what’s achievable in pure MicroPython, and another order of magnitude faster compared to PPL.


Anyway, see for yourselves… (the result will appear after pressing On).

To run the app, you first need to install BackdoorInstaller.

RE: Jailbreak Fire (using BackdoorInstaller) - komame - 2026-03-29 15:13

(2026-03-29, 13:22)raprism Wrote: A nice video would make G2 owners (like myself) even more jealous ;-)

Achieving good quality when recording a small LCD screen during animation is quite difficult. Not much is visible. But at least it shows fairly well how to install Backdoor.