DarkFlippers/unleashed-firmware

SubGhz: Keeloq Faac FIX protocol support

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#937 opened on Dec 26, 2025

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feature requesthelp wanted

Description

Description of the feature you're suggesting.

Can someone add Faac FIX remote controls to the rolling codes?

Image

Image

faac_fix.zip

Anything else?

receiver

Image

Image

remote control Faac FIX2

Image

Image

remote control Faac FIX3

Image

Image

remote control Faac FIX4

Image

Contributor guide

Tech stack
c
Domain
security
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
5
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
over 1 week
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
C programmingFlipper Zero firmware developmentSub GHz protocol analysis
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
The contributor should analyze the provided images and zip file to extract raw signal data, then reverse engineer the Faac FIX rolling code algorithm (likely a KeeLoq variant). They need to implement decoding/encoding in the firmware's subghz module, referencing existing rolling code handlers in the codebase (e.g., for other brands). Collaboration with the issue author may be necessary to clarify missing protocol details such as timing and encryption parameters.