# FIFINE SC3: firmware decryption and four-fader patch

> FIFINE SC3 research documents decryption of the mixer's MVsilicon firmware and its ACP control protocol over USB HID. The repository provides cipher and container tooling, protocol findings, and a firmware patch that exposes all four fader positions to host-side volume tools.

- Type: Case study
- Targets: Firmware · Protocol
- Category: Firmware tools
- Relationship: Foundation tool
- Sources reviewed: 2026-11-06
- Added to the catalog: 2026-11-08
- Original resource: <https://github.com/dank0i/sc3>
- Primary source: <https://github.com/dank0i/sc3/blob/476f5b44e8c96d1b29aedffd687d578757abec9c/README.md>
- Catalog page: <https://awesomerea.org/resources/sc3-firmware-research-case/>
- Record JSON: <https://awesomerea.org/resources/sc3-firmware-research-case/record.json>
- Chinese version: [简体中文](https://awesomerea.org/zh/resources/sc3-firmware-research-case/index.md)

## Requirements & limits

- **Prerequisites:** Supply your own FIFINE SC3 firmware image; the repository does not include firmware images.
- **Scope:** The patch targets the SC3; stock firmware exposes only one fader to the host.
- **License:** MIT License.

## Primary sources

1. <https://github.com/dank0i/sc3/blob/476f5b44e8c96d1b29aedffd687d578757abec9c/README.md>
2. <https://github.com/dank0i/sc3/blob/476f5b44e8c96d1b29aedffd687d578757abec9c/docs/acp-protocol.md>

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## About this entry

The description was reviewed against primary sources.
Original editorial content: MIT. Linked projects, papers and assets retain their own rights and licenses.