FiiOat is a Magisk module designed specifically for FiiO Android digital audio players to tweak kernel parameters, manage zswap size, and perform minimal debloating. It runs automatically at boot to improve overall system responsiveness and resource management on supported devices.

I flashed this on a rooted FiiO DAP, and the reduction in interface stutter was instantly noticeable. Under the hood, it aggressively cuts down on background logging and memory compression, meaning heavy hi-res music apps run far better without choking the system.

FiiOat Features

Jitter and latency are significantly reduced by applying Google's schedutil rate-limits and forcing top-app task boosting.
Background logging tasks such as printk and scheduler stats are completely disabled, freeing up valuable CPU cycles.
Smart RAM management removes zswap entirely and tweaks mglru to give your active music players more breathing room.
Bloatware gets stripped from the base firmware, preventing FiiO secondary applications from automatically running in the background.

Support & Requirements

Supported Devices: FiiO digital audio players running Android 13 (specifically designed for the M21 and JM21 models).
Required Root: Magisk (v20.4 or newer), KernelSU, or APatch.

How to Install

Download the latest FiiOat release ZIP file to your device storage.
Open your root manager application and flash the downloaded file in the modules section.
Reboot your digital audio player to apply the new kernel tweaks.